4528 Commits

Author	SHA1	Message	Date
Linus Torvalds	e4bf304f00	ring-buffer updates for 7.1: ... - Add remote buffers for pKVM pKVM has a hypervisor component that is used to protect the guest from the host kernel. This hypervisor is a black box to the kernel as the kernel is to user space. The remote buffers are used to have a memory mapping between the hypervisor and the kernel where kernel may send commands to enable tracing within the hypervisor. Then the kernel will read this memory mapping just like user space can read the memory mapped ring buffer of the kernel tracing system. Since the hypervisor only has a single context, it doesn't need to worry about races between normal context, interrupt context and NMIs like the kernel does. The ring buffer it uses doesn't need to be as complex. The remote buffers are a simple version of the ring buffer that works in a single context. They are still per-CPU and use sub buffers. The data layout is the same as the kernel's ring buffer to share the same parsing. Currently, only ARM64 implements pKVM, but there's work to implement it also in x86. The remote buffer code is separated out from the ARM implementation so that it can be used in the future by x86. The ARM64 updates for pKVM is in the ARM/KVM tree and it merged in the remote buffers of this tree. - Merge commit f35dbac694 ("ring-buffer: Fix to update per-subbuf entries of persistent ring buffer")` A fix was merged upstream that some new changes depended on. The upstream commit was merged into the ring buffer branch to fulfil the dependency. - Make the backup instance non reusable The backup instance is a copy of the persistent ring buffer so that the persistent ring buffer could start recording again without using the data from the previous boot. The backup isn't for normal tracing. It is made read-only, and after it is consumed, it is automatically removed. - Have backup copy persistent instance before it starts recording To allow the persistent ring buffer to start recording from the kernel command line commands, move the copy of the backup instance to before the the command line options start recording. - Report header_page overwrite field as "char" and not "int' The rust parser of the header_page file was triggering a warning when it defined the overwrite variable as "int" but it was only a single byte in size. - Fix memory barriers for the trace_buffer CPU mask When a CPU comes online, the bit is set to allow readers to know that the CPU buffer is allocated. The bit is set after the allocation is done, and a smp_wmb() is performed after the allocation and before the setting of the bit. But instead of adding a smp_rmb() to all readers, since once a buffer is created for a CPU it is not deleted if that CPU goes offline, so this allocation is almost always done at boot up before any readers exist. If for the unlikely case where a CPU comes online for the first time after the system boot has finished, send an IPI to all CPUs to force the smp_rmb() for each CPU. - Show clock function being used in debugging ring buffer data When the ring buffer checks are enabled and the ring buffer detects an inconsistency in the times of the invents, print out the clock being used when the error occurred. There was a very hard to hit bug that would happen every so often and it ended up being only triggered when the jiffies clock was being used. If the bug showed the clock being used, it would have been much easier to find the problem (which was an internal function was being traced which caused the clock accounting to go off). -----BEGIN PGP SIGNATURE----- iIoEABYKADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCad9S9xQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qpO8AQDwq2GKeups4aMfOjsUAXX9pIGWI9O1 eerhmazgi1LJLQEAtKRNSddOj/7nOJ5hLillJH4uAQOnJBkAWtjlTSUnLg8= =HXkO -----END PGP SIGNATURE----- Merge tag 'trace-ringbuffer-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull ring-buffer updates from Steven Rostedt: - Add remote buffers for pKVM pKVM has a hypervisor component that is used to protect the guest from the host kernel. This hypervisor is a black box to the kernel as the kernel is to user space. The remote buffers are used to have a memory mapping between the hypervisor and the kernel where kernel may send commands to enable tracing within the hypervisor. Then the kernel will read this memory mapping just like user space can read the memory mapped ring buffer of the kernel tracing system. Since the hypervisor only has a single context, it doesn't need to worry about races between normal context, interrupt context and NMIs like the kernel does. The ring buffer it uses doesn't need to be as complex. The remote buffers are a simple version of the ring buffer that works in a single context. They are still per-CPU and use sub buffers. The data layout is the same as the kernel's ring buffer to share the same parsing. Currently, only ARM64 implements pKVM, but there's work to implement it also in x86. The remote buffer code is separated out from the ARM implementation so that it can be used in the future by x86. The ARM64 updates for pKVM is in the ARM/KVM tree and it merged in the remote buffers of this tree. - Make the backup instance non reusable The backup instance is a copy of the persistent ring buffer so that the persistent ring buffer could start recording again without using the data from the previous boot. The backup isn't for normal tracing. It is made read-only, and after it is consumed, it is automatically removed. - Have backup copy persistent instance before it starts recording To allow the persistent ring buffer to start recording from the kernel command line commands, move the copy of the backup instance to before the the command line options start recording. - Report header_page overwrite field as "char" and not "int' The rust parser of the header_page file was triggering a warning when it defined the overwrite variable as "int" but it was only a single byte in size. - Fix memory barriers for the trace_buffer CPU mask When a CPU comes online, the bit is set to allow readers to know that the CPU buffer is allocated. The bit is set after the allocation is done, and a smp_wmb() is performed after the allocation and before the setting of the bit. But instead of adding a smp_rmb() to all readers, since once a buffer is created for a CPU it is not deleted if that CPU goes offline, so this allocation is almost always done at boot up before any readers exist. If for the unlikely case where a CPU comes online for the first time after the system boot has finished, send an IPI to all CPUs to force the smp_rmb() for each CPU. - Show clock function being used in debugging ring buffer data When the ring buffer checks are enabled and the ring buffer detects an inconsistency in the times of the invents, print out the clock being used when the error occurred. There was a very hard to hit bug that would happen every so often and it ended up being only triggered when the jiffies clock was being used. If the bug showed the clock being used, it would have been much easier to find the problem (which was an internal function was being traced which caused the clock accounting to go off). * tag 'trace-ringbuffer-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (26 commits) ring-buffer: Prevent off-by-one array access in ring_buffer_desc_page() ring-buffer: Report header_page overwrite as char tracing: Allow backup to save persistent ring buffer before it starts tracing/Documentation: Add a section about backup instance tracing: Remove the backup instance automatically after read tracing: Make the backup instance non-reusable ring-buffer: Enforce read ordering of trace_buffer cpumask and buffers ring-buffer: Show what clock function is used on timestamp errors tracing: Check for undefined symbols in simple_ring_buffer tracing: load/unload page callbacks for simple_ring_buffer Documentation: tracing: Add tracing remotes tracing: selftests: Add trace remote tests tracing: Add a trace remote module for testing tracing: Introduce simple_ring_buffer ring-buffer: Export buffer_data_page and macros tracing: Add helpers to create trace remote events tracing: Add events/ root files to trace remotes tracing: Add events to trace remotes tracing: Add init callback to trace remotes tracing: Add non-consuming read to trace remotes ...	2026-04-15 15:59:46 -07:00
Linus Torvalds	40286d6379	pci-v7.1-changes ... -----BEGIN PGP SIGNATURE----- iQJIBAABCgAyFiEEgMe7l+5h9hnxdsnuWYigwDrT+vwFAmnfwfMUHGJoZWxnYWFz QGdvb2dsZS5jb20ACgkQWYigwDrT+vxwIRAAlN1h5er8aFDbjON5YMXBZqlQmzaC bjlUHgwm7HkdErTFozyuqhE8QUO1kCm4uMQzeyJdfY9nRWqMDOuKYxMD5j0exk+o 4tbbJg6Xx4dq7Qrawy9PhxyQm/PDAcvs+FRRlGala+qq9o3fxPDOAZVDE/1C8qFQ Jd7GGd7NZn/NN4xrqST4RQHjO8fwaMwmksWCStsb79kfesQWP6kLADGfIMcWxNUB 2s+oTnK6Hw0tkBv56n6i8mbb0EzS3/RN1daTevGAta1rmfUVVtWGRZ4paMvv0Owi Rl5+O5Jz6/c1qiXZbUqu5CRQPIy7Dr3JPvURcZX6qbsV8PzWXZr0Wi+geWefGOnp 55y+3OT0vdBGAuXLJhrcU7Clzq9D/TZOt8oTI8IFArUfDlmrAIdozPn7gr+VGre5 QuKymSk3XWtyIbe4o8UeZ4f9g0y6ZY1XvtvB7K1tze+OOmqlkfq966+z8aZuGOKx ZvAU/NIat5H02EgB4dEVOP8R5vPZlXGT0RLGl1JWRypPWyZDbVVA3z927qRQG5md IsVq8WaIrB1zyl9g37lZeEaYwP/qCIQsHkMGPYcP4wdOQEV9AQqi5pmjMXnWyQJD PR1nvmTKW7USRCJ+pz8xPhZh0cj3ENaddORTD3I/0CGVV0y452bU/5rr4T+K04bK PCJBpxTIDuWDwXc= =FFRz -----END PGP SIGNATURE----- Merge tag 'pci-v7.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci Pull pci updates from Bjorn Helgaas: "Enumeration: - Allow TLP Processing Hints to be enabled for RCiEPs (George Abraham P) - Enable AtomicOps only if we know the Root Port supports them (Gerd Bayer) - Don't enable AtomicOps for RCiEPs since none of them need Atomic Ops and we can't tell whether the Root Complex would support them (Gerd Bayer) - Leave Precision Time Measurement disabled until a driver enables it to avoid PCIe errors (Mika Westerberg) - Make pci_set_vga_state() fail if bridge doesn't support VGA routing, i.e., PCI_BRIDGE_CTL_VGA is not writable, and return errors to vga_get() callers including userspace via /dev/vga_arbiter (Simon Richter) - Validate max-link-speed from DT in j721e, brcmstb, mediatek-gen3, rzg3s drivers (where the actual controller constraints are known), and remove validation from the generic OF DT accessor (Hans Zhang) - Remove pc110pad driver (no longer useful after 486 CPU support removed) and no_pci_devices() (pc110pad was the last user) (Dmitry Torokhov, Heiner Kallweit) Resource management: - Prevent assigning space to unimplemented bridge windows; previously we mistakenly assumed prefetchable window existed and assigned space and put a BAR there (Ahmed Naseef) - Avoid shrinking bridge windows to fit in the initial Root Port window; fixes one problem with devices with large BARs connected via switches, e.g., Thunderbolt (Ilpo Järvinen) - Pass full extent of empty space, not just the aligned space, to resource_alignf callback so free space before the requested alignment can be used (Ilpo Järvinen) - Place small resources before larger ones for better utilization of address space (Ilpo Järvinen) - Fix alignment calculation for resource size larger than align, e.g., bridge windows larger than the 1MB required alignment (Ilpo Järvinen) Reset: - Update slot handling so all ARI functions are treated as being in the same slot. They're all reset by Secondary Bus Reset, but previously drivers of ARI functions that appeared to be on a non-zero device weren't notified and fatal hardware errors could result (Keith Busch) - Make sysfs reset_subordinate hotplug safe to avoid spurious hotplug events (Keith Busch) - Hide Secondary Bus Reset ('bus') from sysfs reset_methods if masked by CXL because it has no effect (Vidya Sagar) - Avoid FLR for AMD NPU device, where it causes the device to hang (Lizhi Hou) Error handling: - Clear only error bits in PCIe Device Status to avoid accidentally clearing Emergency Power Reduction Detected (Shuai Xue) - Check for AER errors even in devices without drivers (Lukas Wunner) - Initialize ratelimit info so DPC and EDR paths log AER error information (Kuppuswamy Sathyanarayanan) Power control: - Add UPD720201/UPD720202 USB 3.0 xHCI Host Controller .compatible so generic pwrctrl driver can control it (Neil Armstrong) Hotplug: - Set LED_HW_PLUGGABLE for NPEM hotplug-capable ports so LED core doesn't complain when setting brightness fails because the endpoint is gone (Richard Cheng) Peer-to-peer DMA: - Allow wildcards in list of host bridges that support peer-to-peer DMA between hierarchy domains and add all Google SoCs (Jacob Moroni) Endpoint framework: - Advertise dynamic inbound mapping support in pci-epf-test and update host pci_endpoint_test to skip doorbell testing if not advertised by endpoint (Koichiro Den) - Return 0, not remaining timeout, when MHI eDMA ops complete so mhi_ep_ring_add_element() doesn't interpret non-zero as failure (Daniel Hodges) - Remove vntb and ntb duplicate resource teardown that leads to oops when .allow_link() fails or .drop_link() is called (Koichiro Den) - Disable vntb delayed work before clearing BAR mappings and doorbells to avoid oops caused by doing the work after resources have been torn down (Koichiro Den) - Add a way to describe reserved subregions within BARs, e.g., platform-owned fixed register windows, and use it for the RK3588 BAR4 DMA ctrl window (Koichiro Den) - Add BAR_DISABLED for BARs that will never be available to an EPF driver, and change some BAR_RESERVED annotations to BAR_DISABLED (Niklas Cassel) - Add NTB .get_dma_dev() callback for cases where DMA API requires a different device, e.g., vNTB devices (Koichiro Den) - Add reserved region types for MSI-X Table and PBA so Endpoint controllers can them as describe hardware-owned regions in a BAR_RESERVED BAR (Manikanta Maddireddy) - Make Tegra194/234 BAR0 programmable and remove 1MB size limit (Manikanta Maddireddy) - Expose Tegra BAR2 (MSI-X) and BAR4 (DMA) as 64-bit BAR_RESERVED (Manikanta Maddireddy) - Add Tegra194 and Tegra234 device table entries to pci_endpoint_test (Manikanta Maddireddy) - Skip the BAR subrange selftest if there are not enough inbound window resources to run the test (Christian Bruel) New native PCIe controller drivers: - Add DT binding and driver for Andes QiLai SoC PCIe host controller (Randolph Lin) - Add DT binding and driver for ESWIN PCIe Root Complex (Senchuan Zhang) Baikal T-1 PCIe controller driver: - Remove driver since it never quite became usable (Andy Shevchenko) Cadence PCIe controller driver: - Implement byte/word config reads with dword (32-bit) reads because some Cadence controllers don't support sub-dword accesses (Aksh Garg) CIX Sky1 PCIe controller driver: - Add 'power-domains' to DT binding for SCMI power domain (Gary Yang) Freescale i.MX6 PCIe controller driver: - Add i.MX94 and i.MX943 to fsl,imx6q-pcie-ep DT binding (Richard Zhu) - Delay instead of polling for L2/L3 Ready after PME_Turn_off when suspending i.MX6SX because LTSSM registers are inaccessible (Richard Zhu) - Separate PERST# assertion (for resetting endpoints) from core reset (for resetting the RC itself) to prepare for new DTs with PERST# GPIO in per-Root Port nodes (Sherry Sun) - Retain Root Port MSI capability on i.MX7D, i.MX8MM, and i.MX8MQ so MSI from downstream devices will work (Richard Zhu) - Fix i.MX95 reference clock source selection when internal refclk is used (Franz Schnyder) Freescale Layerscape PCIe controller driver: - Allow building as a removable module (Sascha Hauer) MediaTek PCIe Gen3 controller driver: - Use dev_err_probe() to simplify error paths and make deferred probe messages visible in /sys/kernel/debug/devices_deferred (Chen-Yu Tsai) - Power off device if setup fails (Chen-Yu Tsai) - Integrate new pwrctrl API to enable power control for WiFi/BT adapters on mainboard or in PCIe or M.2 slots (Chen-Yu Tsai) NVIDIA Tegra194 PCIe controller driver: - Poll less aggressively and non-atomically for PME_TO_Ack during transition to L2 (Vidya Sagar) - Disable LTSSM after transition to Detect on surprise link down to stop toggling between Polling and Detect (Manikanta Maddireddy) - Don't force the device into the D0 state before L2 when suspending or shutting down the controller (Vidya Sagar) - Disable PERST# IRQ only in Endpoint mode because it's not registered in Root Port mode (Manikanta Maddireddy) - Handle 'nvidia,refclk-select' as optional (Vidya Sagar) - Disable direct speed change in Endpoint mode so link speed change is controlled by the host (Vidya Sagar) - Set LTR values before link up to avoid bogus LTR messages with 0 latency (Vidya Sagar) - Allow system suspend when the Endpoint link is down (Vidya Sagar) - Use DWC IP core version, not Tegra custom values, to avoid DWC core version check warnings (Manikanta Maddireddy) - Apply ECRC workaround to devices based on DesignWare 5.00a as well as 4.90a (Manikanta Maddireddy) - Disable PM Substate L1.2 in Endpoint mode to work around Tegra234 erratum (Vidya Sagar) - Delay post-PERST# cleanup until core is powered on to avoid CBB timeout (Manikanta Maddireddy) - Assert CLKREQ# so switches that forward it to their downstream side can bring up those links successfully (Vidya Sagar) - Calibrate pipe to UPHY for Endpoint mode to reset stale PLL state from any previous bad link state (Vidya Sagar) - Remove IRQF_ONESHOT flag from Endpoint interrupt registration so DMA driver and Endpoint controller driver can share the interrupt line (Vidya Sagar) - Enable DMA interrupt to support DMA in both Root Port and Endpoint modes (Vidya Sagar) - Enable hardware link retraining after link goes down in Endpoint mode (Vidya Sagar) - Add DT binding and driver support for core clock monitoring (Vidya Sagar) Qualcomm PCIe controller driver: - Advertise 'Hot-Plug Capable' and set 'No Command Completed Support' since Qcom Root Ports support hotplug events like DL_Up/Down and can accept writes to Slot Control without delays between writes (Krishna Chaitanya Chundru) Renesas R-Car PCIe controller driver: - Mark Endpoint BAR0 and BAR2 as Resizable (Koichiro Den) - Reduce EPC BAR alignment requirement to 4K (Koichiro Den) Renesas RZ/G3S PCIe controller driver: - Add RZ/G3E to DT binding and to driver (John Madieu) - Assert (not deassert) resets in probe error path (John Madieu) - Assert resets in suspend path in reverse order they were deasserted during probe (John Madieu) - Rework inbound window algorithm to prevent mapping more than intended region and enforce alignment on size, to prepare for RZ/G3E support (John Madieu) Rockchip DesignWare PCIe controller driver: - Add tracepoints for PCIe controller LTSSM transitions and link rate changes (Shawn Lin) - Trace LTSSM events collected by the dw-rockchip debug FIFO (Shawn Lin) SOPHGO PCIe controller driver: - Disable ASPM L0s and L1 on Sophgo 2042 PCIe Root Ports that advertise support for them (Yao Zi) Synopsys DesignWare PCIe controller driver: - Continue with system suspend even if an Endpoint doesn't respond with PME_TO_Ack message (Manivannan Sadhasivam) - Set Endpoint MSI-X Table Size in the correct function of a multi-function device when configuring MSI-X, not in Function 0 (Aksh Garg) - Set Max Link Width and Max Link Speed for all functions of a multi-function device, not just Function 0 (Aksh Garg) - Expose PCIe event counters in groups 5-7 in debugfs (Hans Zhang) Miscellaneous: - Warn only once about invalid ACS kernel parameter format (Richard Cheng) - Suppress FW_BUG warning when writing sysfs 'numa_node' with the current value (Li RongQing) - Drop redundant 'depends on PCI' from Kconfig (Julian Braha)" * tag 'pci-v7.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (165 commits) PCI/P2PDMA: Add Google SoCs to the P2P DMA host bridge list PCI/P2PDMA: Allow wildcard Device IDs in host bridge list PCI: sg2042: Avoid L0s and L1 on Sophgo 2042 PCIe Root Ports PCI: cadence: Add flags for disabling ASPM capability for broken Root Ports PCI: tegra194: Add core monitor clock support dt-bindings: PCI: tegra194: Add monitor clock support PCI: tegra194: Enable hardware hot reset mode in Endpoint mode PCI: tegra194: Enable DMA interrupt PCI: tegra194: Remove IRQF_ONESHOT flag during Endpoint interrupt registration PCI: tegra194: Calibrate pipe to UPHY for Endpoint mode PCI: tegra194: Assert CLKREQ# explicitly by default PCI: tegra194: Fix CBB timeout caused by DBI access before core power-on PCI: tegra194: Disable L1.2 capability of Tegra234 EP PCI: dwc: Apply ECRC workaround to DesignWare 5.00a as well PCI: tegra194: Use DWC IP core version PCI: tegra194: Free up Endpoint resources during remove() PCI: tegra194: Allow system suspend when the Endpoint link is not up PCI: tegra194: Set LTR message request before PCIe link up in Endpoint mode PCI: tegra194: Disable direct speed change for Endpoint mode PCI: tegra194: Use devm_gpiod_get_optional() to parse "nvidia,refclk-select" ...	2026-04-15 14:41:21 -07:00
Linus Torvalds	334fbe734e	mm.git review status for linus..mm-stable ... Everything: Total patches: 368 Reviews/patch: 1.56 Reviewed rate: 74% Excluding DAMON: Total patches: 316 Reviews/patch: 1.77 Reviewed rate: 81% Excluding DAMON and zram: Total patches: 306 Reviews/patch: 1.81 Reviewed rate: 82% Excluding DAMON, zram and maple_tree: Total patches: 276 Reviews/patch: 2.01 Reviewed rate: 91% Significant patch series in this merge: - The 30 patch series "maple_tree: Replace big node with maple copy" from Liam Howlett is mainly prepararatory work for ongoing development but it does reduce stack usage and is an improvement. - The 12 patch series "mm, swap: swap table phase III: remove swap_map" from Kairui Song offers memory savings by removing the static swap_map. It also yields some CPU savings and implements several cleanups. - The 2 patch series "mm: memfd_luo: preserve file seals" from Pratyush Yadav adds file seal preservation to LUO's memfd code. - The 2 patch series "mm: zswap: add per-memcg stat for incompressible pages" from Jiayuan Chen adds additional userspace stats reportng to zswap. - The 4 patch series "arch, mm: consolidate empty_zero_page" from Mike Rapoport implements some cleanups for our handling of ZERO_PAGE() and zero_pfn. - The 2 patch series "mm/kmemleak: Improve scan_should_stop() implementation" from Zhongqiu Han provides an robustness improvement and some cleanups in the kmemleak code. - The 4 patch series "Improve khugepaged scan logic" from Vernon Yang "improves the khugepaged scan logic and reduces CPU consumption by prioritizing scanning tasks that access memory frequently". - The 2 patch series "Make KHO Stateless" from Jason Miu simplifies Kexec Handover by "transitioning KHO from an xarray-based metadata tracking system with serialization to a radix tree data structure that can be passed directly to the next kernel" - The 3 patch series "mm: vmscan: add PID and cgroup ID to vmscan tracepoints" from Thomas Ballasi and Steven Rostedt enhances vmscan's tracepointing. - The 5 patch series "mm: arch/shstk: Common shadow stack mapping helper and VM_NOHUGEPAGE" from Catalin Marinas is a cleanup for the shadow stack code: remove per-arch code in favour of a generic implementation. - The 2 patch series "Fix KASAN support for KHO restored vmalloc regions" from Pasha Tatashin fixes a WARN() which can be emitted the KHO restores a vmalloc area. - The 4 patch series "mm: Remove stray references to pagevec" from Tal Zussman provides several cleanups, mainly udpating references to "struct pagevec", which became folio_batch three years ago. - The 17 patch series "mm: Eliminate fake head pages from vmemmap optimization" from Kiryl Shutsemau simplifies the HugeTLB vmemmap optimization (HVO) by changing how tail pages encode their relationship to the head page. - The 2 patch series "mm/damon/core: improve DAMOS quota efficiency for core layer filters" from SeongJae Park improves two problematic behaviors of DAMOS that makes it less efficient when core layer filters are used. - The 3 patch series "mm/damon: strictly respect min_nr_regions" from SeongJae Park improves DAMON usability by extending the treatment of the min_nr_regions user-settable parameter. - The 3 patch series "mm/page_alloc: pcp locking cleanup" from Vlastimil Babka is a proper fix for a previously hotfixed SMP=n issue. Code simplifications and cleanups ennsed. - The 16 patch series "mm: cleanups around unmapping / zapping" from David Hildenbrand implements "a bunch of cleanups around unmapping and zapping. Mostly simplifications, code movements, documentation and renaming of zapping functions". - The 6 patch series "support batched checking of the young flag for MGLRU" from Baolin Wang supports batched checking of the young flag for MGLRU. It's part cleanups; one benchmark shows large performance benefits for arm64. - The 5 patch series "memcg: obj stock and slab stat caching cleanups" from Johannes Weiner provides memcg cleanup and robustness improvements. - The 5 patch series "Allow order zero pages in page reporting" from Yuvraj Sakshith enhances page_reporting's free page reporting - it is presently and undesirably order-0 pages when reporting free memory. - The 6 patch series "mm: vma flag tweaks" from Lorenzo Stoakes is cleanup work following from the recent conversion of the VMA flags to a bitmap. - The 10 patch series "mm/damon: add optional debugging-purpose sanity checks" from SeongJae Park adds some more developer-facing debug checks into DAMON core. - The 2 patch series "mm/damon: test and document power-of-2 min_region_sz requirement" from SeongJae Park adds an additional DAMON kunit test and makes some adjustments to the addr_unit parameter handling. - The 3 patch series "mm/damon/core: make passed_sample_intervals comparisons overflow-safe" from SeongJae Park fixes a hard-to-hit time overflow issue in DAMON core. - The 7 patch series "mm/damon: improve/fixup/update ratio calculation, test and documentation" from SeongJae Park is a "batch of misc/minor improvements and fixups" for DAMON. - The 4 patch series "mm: move vma_(kernel|mmu)_pagesize() out of hugetlb.c" from David Hildenbrand fixes a possible issue with dax-device when CONFIG_HUGETLB=n. Some code movement was required. - The 6 patch series "zram: recompression cleanups and tweaks" from Sergey Senozhatsky provides "a somewhat random mix of fixups, recompression cleanups and improvements" in the zram code. - The 11 patch series "mm/damon: support multiple goal-based quota tuning algorithms" from SeongJae Park extend DAMOS quotas goal auto-tuning to support multiple tuning algorithms that users can select. - The 4 patch series "mm: thp: reduce unnecessary start_stop_khugepaged()" from Breno Leitao fixes the khugpaged sysfs handling so we no longer spam the logs with reams of junk when starting/stopping khugepaged. - The 3 patch series "mm: improve map count checks" from Lorenzo Stoakes provides some cleanups and slight fixes in the mremap, mmap and vma code. - The 5 patch series "mm/damon: support addr_unit on default monitoring targets for modules" from SeongJae Park extends the use of DAMON core's addr_unit tunable. - The 5 patch series "mm: khugepaged cleanups and mTHP prerequisites" from Nico Pache provides cleanups in the khugepaged and is a base for Nico's planned khugepaged mTHP support. - The 15 patch series "mm: memory hot(un)plug and SPARSEMEM cleanups" from David Hildenbrand implements code movement and cleanups in the memhotplug and sparsemem code. - The 2 patch series "mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE and cleanup CONFIG_MIGRATION" from David Hildenbrand rationalizes some memhotplug Kconfig support. - The 6 patch series "change young flag check functions to return bool" from Baolin Wang is "a cleanup patchset to change all young flag check functions to return bool". - The 3 patch series "mm/damon/sysfs: fix memory leak and NULL dereference issues" from Josh Law and SeongJae Park fixes a few potential DAMON bugs. - The 25 patch series "mm/vma: convert vm_flags_t to vma_flags_t in vma code" from "converts a lot of the existing use of the legacy vm_flags_t data type to the new vma_flags_t type which replaces it". Mainly in the vma code. - The 21 patch series "mm: expand mmap_prepare functionality and usage" from Lorenzo Stoakes "expands the mmap_prepare functionality, which is intended to replace the deprecated f_op->mmap hook which has been the source of bugs and security issues for some time". Cleanups, documentation, extension of mmap_prepare into filesystem drivers. - The 13 patch series "mm/huge_memory: refactor zap_huge_pmd()" from Lorenzo Stoakes simplifies and cleans up zap_huge_pmd(). Additional cleanups around vm_normal_folio_pmd() and the softleaf functionality are performed. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCad3HDQAKCRDdBJ7gKXxA jrUQAPwNhPk5nPSxnyxjAeQtOBHqgCdnICeEismLajPKd9aYRgEA0s2XAu3tSUYi GrBnWImHG3s4ePQxVcPCegWTsOUrXgQ= =1Q7o -----END PGP SIGNATURE----- Merge tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - "maple_tree: Replace big node with maple copy" (Liam Howlett) Mainly prepararatory work for ongoing development but it does reduce stack usage and is an improvement. - "mm, swap: swap table phase III: remove swap_map" (Kairui Song) Offers memory savings by removing the static swap_map. It also yields some CPU savings and implements several cleanups. - "mm: memfd_luo: preserve file seals" (Pratyush Yadav) File seal preservation to LUO's memfd code - "mm: zswap: add per-memcg stat for incompressible pages" (Jiayuan Chen) Additional userspace stats reportng to zswap - "arch, mm: consolidate empty_zero_page" (Mike Rapoport) Some cleanups for our handling of ZERO_PAGE() and zero_pfn - "mm/kmemleak: Improve scan_should_stop() implementation" (Zhongqiu Han) A robustness improvement and some cleanups in the kmemleak code - "Improve khugepaged scan logic" (Vernon Yang) Improve khugepaged scan logic and reduce CPU consumption by prioritizing scanning tasks that access memory frequently - "Make KHO Stateless" (Jason Miu) Simplify Kexec Handover by transitioning KHO from an xarray-based metadata tracking system with serialization to a radix tree data structure that can be passed directly to the next kernel - "mm: vmscan: add PID and cgroup ID to vmscan tracepoints" (Thomas Ballasi and Steven Rostedt) Enhance vmscan's tracepointing - "mm: arch/shstk: Common shadow stack mapping helper and VM_NOHUGEPAGE" (Catalin Marinas) Cleanup for the shadow stack code: remove per-arch code in favour of a generic implementation - "Fix KASAN support for KHO restored vmalloc regions" (Pasha Tatashin) Fix a WARN() which can be emitted the KHO restores a vmalloc area - "mm: Remove stray references to pagevec" (Tal Zussman) Several cleanups, mainly udpating references to "struct pagevec", which became folio_batch three years ago - "mm: Eliminate fake head pages from vmemmap optimization" (Kiryl Shutsemau) Simplify the HugeTLB vmemmap optimization (HVO) by changing how tail pages encode their relationship to the head page - "mm/damon/core: improve DAMOS quota efficiency for core layer filters" (SeongJae Park) Improve two problematic behaviors of DAMOS that makes it less efficient when core layer filters are used - "mm/damon: strictly respect min_nr_regions" (SeongJae Park) Improve DAMON usability by extending the treatment of the min_nr_regions user-settable parameter - "mm/page_alloc: pcp locking cleanup" (Vlastimil Babka) The proper fix for a previously hotfixed SMP=n issue. Code simplifications and cleanups ensued - "mm: cleanups around unmapping / zapping" (David Hildenbrand) A bunch of cleanups around unmapping and zapping. Mostly simplifications, code movements, documentation and renaming of zapping functions - "support batched checking of the young flag for MGLRU" (Baolin Wang) Batched checking of the young flag for MGLRU. It's part cleanups; one benchmark shows large performance benefits for arm64 - "memcg: obj stock and slab stat caching cleanups" (Johannes Weiner) memcg cleanup and robustness improvements - "Allow order zero pages in page reporting" (Yuvraj Sakshith) Enhance free page reporting - it is presently and undesirably order-0 pages when reporting free memory. - "mm: vma flag tweaks" (Lorenzo Stoakes) Cleanup work following from the recent conversion of the VMA flags to a bitmap - "mm/damon: add optional debugging-purpose sanity checks" (SeongJae Park) Add some more developer-facing debug checks into DAMON core - "mm/damon: test and document power-of-2 min_region_sz requirement" (SeongJae Park) An additional DAMON kunit test and makes some adjustments to the addr_unit parameter handling - "mm/damon/core: make passed_sample_intervals comparisons overflow-safe" (SeongJae Park) Fix a hard-to-hit time overflow issue in DAMON core - "mm/damon: improve/fixup/update ratio calculation, test and documentation" (SeongJae Park) A batch of misc/minor improvements and fixups for DAMON - "mm: move vma_(kernel|mmu)_pagesize() out of hugetlb.c" (David Hildenbrand) Fix a possible issue with dax-device when CONFIG_HUGETLB=n. Some code movement was required. - "zram: recompression cleanups and tweaks" (Sergey Senozhatsky) A somewhat random mix of fixups, recompression cleanups and improvements in the zram code - "mm/damon: support multiple goal-based quota tuning algorithms" (SeongJae Park) Extend DAMOS quotas goal auto-tuning to support multiple tuning algorithms that users can select - "mm: thp: reduce unnecessary start_stop_khugepaged()" (Breno Leitao) Fix the khugpaged sysfs handling so we no longer spam the logs with reams of junk when starting/stopping khugepaged - "mm: improve map count checks" (Lorenzo Stoakes) Provide some cleanups and slight fixes in the mremap, mmap and vma code - "mm/damon: support addr_unit on default monitoring targets for modules" (SeongJae Park) Extend the use of DAMON core's addr_unit tunable - "mm: khugepaged cleanups and mTHP prerequisites" (Nico Pache) Cleanups to khugepaged and is a base for Nico's planned khugepaged mTHP support - "mm: memory hot(un)plug and SPARSEMEM cleanups" (David Hildenbrand) Code movement and cleanups in the memhotplug and sparsemem code - "mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE and cleanup CONFIG_MIGRATION" (David Hildenbrand) Rationalize some memhotplug Kconfig support - "change young flag check functions to return bool" (Baolin Wang) Cleanups to change all young flag check functions to return bool - "mm/damon/sysfs: fix memory leak and NULL dereference issues" (Josh Law and SeongJae Park) Fix a few potential DAMON bugs - "mm/vma: convert vm_flags_t to vma_flags_t in vma code" (Lorenzo Stoakes) Convert a lot of the existing use of the legacy vm_flags_t data type to the new vma_flags_t type which replaces it. Mainly in the vma code. - "mm: expand mmap_prepare functionality and usage" (Lorenzo Stoakes) Expand the mmap_prepare functionality, which is intended to replace the deprecated f_op->mmap hook which has been the source of bugs and security issues for some time. Cleanups, documentation, extension of mmap_prepare into filesystem drivers - "mm/huge_memory: refactor zap_huge_pmd()" (Lorenzo Stoakes) Simplify and clean up zap_huge_pmd(). Additional cleanups around vm_normal_folio_pmd() and the softleaf functionality are performed. * tag 'mm-stable-2026-04-13-21-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (369 commits) mm: fix deferred split queue races during migration mm/khugepaged: fix issue with tracking lock mm/huge_memory: add and use has_deposited_pgtable() mm/huge_memory: add and use normal_or_softleaf_folio_pmd() mm: add softleaf_is_valid_pmd_entry(), pmd_to_softleaf_folio() mm/huge_memory: separate out the folio part of zap_huge_pmd() mm/huge_memory: use mm instead of tlb->mm mm/huge_memory: remove unnecessary sanity checks mm/huge_memory: deduplicate zap deposited table call mm/huge_memory: remove unnecessary VM_BUG_ON_PAGE() mm/huge_memory: add a common exit path to zap_huge_pmd() mm/huge_memory: handle buggy PMD entry in zap_huge_pmd() mm/huge_memory: have zap_huge_pmd return a boolean, add kdoc mm/huge: avoid big else branch in zap_huge_pmd() mm/huge_memory: simplify vma_is_specal_huge() mm: on remap assert that input range within the proposed VMA mm: add mmap_action_map_kernel_pages[_full]() uio: replace deprecated mmap hook with mmap_prepare in uio_info drivers: hv: vmbus: replace deprecated mmap hook with mmap_prepare mm: allow handling of stacked mmap_prepare hooks in more drivers ...	2026-04-15 12:59:16 -07:00
Linus Torvalds	4a57e0913e	drm for v7.1-rc1 ... mm: - two pass MMU interval notifiers - add gpu active/reclaim per-node stat counters math: - provide __KERNEL_DIV_ROUND_CLOSEST() in UAPI - implement DIV_ROUND_CLOSEST() with __KERNEL_DIV_ROUND_CLOSEST() rust: - shared tag with driver-core: register macro and io infra - core: rework DMA coherent API - core: add interop::list to interop with C linked lists - core: add more num::Bounded operations - core: enable generic_arg_infer and add EMSGSIZE - workqueue: add ARef<T> support for work and delayed work - add GPU buddy allocator abstraction - add DRM shmem GEM helper abstraction - allow drm:::Device to dispatch work and delayed work items to driver private data - add dma_resv_lock helper and raw accessors core: - introduce DRM RAS infrastructure over netlink - add connector panel_type property - fourcc: add ARM interleaved 64k modifier - colorop: add destroy helper - suballoc: split into alloc and init helpers - mode: provide DRM_ARGB_GET*() macros for reading color components edid: - provide drm_output_color_Format dma-buf: - provide revoke mechanism for shared buffers - rename move_notify to invalidate_mappings - always enable move_notify - protect dma_fence_ops with RCU and improve locking - clean pages with helpers atomic: - allocate drm_private_state via callback - helper: use system_percpu_wq buddy: - make buddy allocator available to gpu level - add kernel-doc for buddy allocator - improve aligned allocation ttm: - fix fence signalling - improve tests and docs - improve handling of gfp_retry_mayfail - use per-node stat counters to track memory allocations - port pool to use list_lru - drop NUMA specific pools - make pool shrinker numa aware - track allocated pages per numa node coreboot: - cleanup coreboot framebuffer support sched: - fix race condition in drm_sched_fini pagemap: - enable THP support - pass pagemap_addr by reference gem-shmem: - Track page accessed/dirty status across mmap/vmap gpusvm: - reenable device to device migration - fix unbalanced unclock bridge: - anx7625: Support USB-C plus DT bindings - connector: Fix EDID detection - dw-hdmi-qp: Support Vendor-Specfic and SDP Infoframes; improve others - fsl-ldb: Fix visual artifacts plus related DT property 'enable-termination-resistor' - imx8qxp-pixel-link: Improve bridge reference handling - lt9611: Support Port-B-only input plus DT bindings - tda998x: Support DRM_BRIDGE_ATTACH_NO_CONNECTOR; Clean up - Support TH1520 HDMI plus DT bindings - waveshare-dsi: Fix register and attach; Support 1..4 DSI lanes plus DT bindings - anx7625: Fix USB Type-C handling - cdns-mhdp8546-core: Handle HDCP state in bridge atomic_check - Support Lontium LT8713SX DP MST bridge plus DT bindings - analogix_dp: Use DP helpers for link training panel: - panel-jdi-lt070me05000: Use mipi-dsi multi functions - panel-edp: Support Add AUO B116XAT04.1 (HW: 1A); Support CMN N116BCL-EAK (C2); Support FriendlyELEC plus DT changes - panel-edp: Fix timings for BOE NV140WUM-N64 - ilitek-ili9882t: Allow GPIO calls to sleep - jadard: Support TAIGUAN XTI05101-01A - lxd: Support LXD M9189A plus DT bindings - mantix: Fix pixel clock; Clean up - motorola: Support Motorola Atrix 4G and Droid X2 plus DT bindings - novatek: Support Novatek/Tianma NT37700F plus DT bindings - simple: Support EDT ET057023UDBA plus DT bindings; Support Powertip PH800480T032-ZHC19 plus DT bindings; Support Waveshare 13.3" - novatek-nt36672a: Use mipi_dsi_*_multi() functions - panel-edp: Support BOE NV153WUM-N42, CMN N153JCA-ELK, CSW MNF307QS3-2 - support Himax HX83121A plus DT bindings - support JuTouch JT070TM041 plus DT bindings - support Samsung S6E8FC0 plus DT bindings - himax-hx83102c: support Samsung S6E8FC0 plus DT bindings; support backlight - ili9806e: support Rocktech RK050HR345-CT106A plus DT bindings - simple: support Tianma TM050RDH03 plus DT bindings amdgpu: - enable DC by default on CIK APUs - userq fence ioctl param size fixes - set panel_type to OLED for eDP - refactor DC i2c code - FAMS2 update - rework ttm handling to allow multiple engines - DC DCE 6.x cleanup - DC support for NUTMEG/TRAVIS DP bridge - DCN 4.2 support - GC12 idle power fix for compute - use struct drm_edid in non-DC code - enable NV12/P010 support on primary planes - support newer IP discovery tables - VCN/JPEG 5.0.2 support - GC/MES 12.1 updates - USERQ fixes - add DC idle state manager - eDP DSC seamless boot amdkfd: - GC 12.1 updates - non 4K page fixes xe: - basic Xe3p_LPG and NVL-P enabling patches - allow VM_BIND decompress support - add purgeable buffer object support - add xe_vm_get_property_ioctl - restrict multi-lrc to VCS/VECS engines - allow disabling VM overcommit in fault mode - dGPU memory optimizations - Workaround cleanups and simplification - Allow VFs VRAM quote changes using sysfs - convert GT stats to per-cpu counters - pagefault refactors - enable multi-queue on xe3p_xpc - disable DCC on PTL - make MMIO communication more robust - disable D3Cold for BMG on specific platforms - vfio: improve FLR sync for Xe VFIO i915/display: - C10/C20/LT PHY PLL divider verification - use trans push mechanism to generate PSR frame change on LNL+ - refactor DP DSC slice config - VGA decode refactoring - refactor DPT, gen2-4 overlay, masked field register macro helpers - refactor stolen memory allocation decisions - prepare for UHBR DP tunnels - refactor LT PHY PLL to use DPLL framework - implement register polling/waiting in display code - add shared stepping header between i915 and display i915: - fix potential overflow of shmem scatterlist length nouveau: - provide Z cull info to userspace - initial GA100 support - shutdown on PCI device shutdown nova-core: - harden GSP command queue - add support for large RPCs - simplify GSP sequencer and message handling - refactor falcon firmware handling - convert to new register macro - conver to new DMA coherent API - use checked arithmetic - add debugfs support for gsp-rm log buffers - fix aux device registration for multi-GPU msm: - CI: - Uprev mesa - Restore CI jobs for Qualcomm APQ8016 and APQ8096 devices - Core: - Switched to of_get_available_child_by_name() - DPU: - Fixes for DSC panels - Fixed brownout because of the frequency / OPP mismatch - Quad pipe preparation (not enabled yet) - Switched to virtual planes by default - Dropped VBIF_NRT support - Added support for Eliza platform - Reworked alpha handling - Switched to correct CWB definitions on Eliza - Dropped dummy INTF_0 on MSM8953 - Corrected INTFs related to DP-MST - DP: - Removed debug prints looking into PHY internals - DSI: - Fixes for DSC panels - RGB101010 support - Support for SC8280XP - Moved PHY bindings from display/ to phy/ - GPU: - Preemption support for x2-85 and a840 - IFPC support for a840 - SKU detection support for x2-85 and a840 - Expose AQE support (VK ray-pipeline) - Avoid locking in VM_BIND fence signaling path - Fix to avoid reclaim in GPU snapshot path - Disallow foreign mapping of _NO_SHARE BOs - HDMI: - Fixed infoframes programming - MDP5: - Dropped support for MSM8974v1 - Dropped now unused code for MSM8974 v1 and SDM660 / MSM8998 panthor: - add tracepoints for power and IRQs - fix fence handling - extend timestamp query with flags - support various sources for timestamp queries tyr: - fix names and model/versions rockchip: - vop2: use drm logging function - rk3576 displayport support - support CRTC background color atmel-hlcdc: - support sana5d65 LCD controller tilcdc: - use DT bindings schema - use managed DRM interfaces - support DRM_BRIDGE_ATTACH_NO_CONNECTOR verisilicon: - support DC8200 + DT bindings virtgpu: - support PRIME import with 3D enabled komeda: - fix integer overflow in AFBC checks mcde: - improve bridge handling gma500: - use drm client buffer for fbdev framebuffer amdxdna: - add sensors ioctls - provide NPU power estimate - support column utilization sensor - allow forcing DMA through IOMMU IOVA - support per-BO mem usage queries - refactor GEM implementation ivpu: - update boot API to v3.29.4 - limit per-user number of doorbells/contexts - perform engine reset on TDR error loongson: - replace custom code with drm_gem_ttm_dumb_map_offset() imx: - support planes behind the primary plane - fix bus-format selection vkms: - support CRTC background color v3d: - improve handling of struct v3d_stats komeda: - support Arm China Linlon D6 plus DT bindings imagination: - improve power-off sequence - support context-reset notification from firmware mediatek: - mtk_dsi: enable hs clock during pre-enable - Remove all conflicting aperture devices during probe - Add support for mt8167 display blocks -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEEKbZHaGwW9KfbeusDHTzWXnEhr4FAmnfMHMACgkQDHTzWXnE hr4gEg/+Oaf6KBcvqNKPLwDlNeOvHap1n8oiy7SXvOKN2/KEAu/zGpEciJ7GsSge qdqY4xhEfp0JZLrTZiIIzFr38uzkanfOLdF2AQCVrfCRhlO7QLiUDxAAdDZUyINe kKLvNunxMwhzwsmRHEDL85cgPkhsxt2ux+tUOYZrEQ/ZbdupNrFw9q5ewmuYzGng HY8bsnB0jVwQ9IU/X6h+Xzr/19623/CZyUWJSuY1foKMhHMceyrCmpAFEqjFWn71 7zNYFlPEQtqa6qtIZXVbJB4mhd7NbmMW6s367xx+Sx+UJDDNfS6ku+hpISwxNuVX 7fOoEkhQ+ynIcxGkfOi5Q9j2/mV/WL/GEA/IUWfmX8l219WOrKY4w0NtCE4C78r7 QFGUR6w8Vi97FCP8NuA7Kix4J9eSr/FAzqoG0snAOQbVdaTSBr1hL0PeewD8BRry PUkCCh6J7jKA6POt4JZeU6mbJ3AMoOwS9BICi10R1R6EnIKNpKGVpAuYHk4B5+u3 X5vd1ds+8dJN/etaFYgIbirUocKx6zt9rT5i4/wPZIDPoCgZNofePtPCiJoTcnNN PUZUngcWLpftwW+kCUdc4lF1Q7nguQpXVpX0WJiSfqejshUTPXHPlmJV81GoNSHo fQMUXIjO5cAX0FKPBakSxxwFnOQFq4aZb6kRBt4lYgt+RJfzo3s= =GX7Q -----END PGP SIGNATURE----- Merge tag 'drm-next-2026-04-15' of https://gitlab.freedesktop.org/drm/kernel Pull drm updates from Dave Airlie: "Highlights: - new DRM RAS infrastructure using netlink - amdgpu: enable DC on CIK APUs, and more IP enablement, and more user queue work - xe: purgeable BO support, and new hw enablement - dma-buf : add revocable operations Full summary: mm: - two-pass MMU interval notifiers - add gpu active/reclaim per-node stat counters math: - provide __KERNEL_DIV_ROUND_CLOSEST() in UAPI - implement DIV_ROUND_CLOSEST() with __KERNEL_DIV_ROUND_CLOSEST() rust: - shared tag with driver-core: register macro and io infra - core: rework DMA coherent API - core: add interop::list to interop with C linked lists - core: add more num::Bounded operations - core: enable generic_arg_infer and add EMSGSIZE - workqueue: add ARef<T> support for work and delayed work - add GPU buddy allocator abstraction - add DRM shmem GEM helper abstraction - allow drm:::Device to dispatch work and delayed work items to driver private data - add dma_resv_lock helper and raw accessors core: - introduce DRM RAS infrastructure over netlink - add connector panel_type property - fourcc: add ARM interleaved 64k modifier - colorop: add destroy helper - suballoc: split into alloc and init helpers - mode: provide DRM_ARGB_GET*() macros for reading color components edid: - provide drm_output_color_Format dma-buf: - provide revoke mechanism for shared buffers - rename move_notify to invalidate_mappings - always enable move_notify - protect dma_fence_ops with RCU and improve locking - clean pages with helpers atomic: - allocate drm_private_state via callback - helper: use system_percpu_wq buddy: - make buddy allocator available to gpu level - add kernel-doc for buddy allocator - improve aligned allocation ttm: - fix fence signalling - improve tests and docs - improve handling of gfp_retry_mayfail - use per-node stat counters to track memory allocations - port pool to use list_lru - drop NUMA specific pools - make pool shrinker numa aware - track allocated pages per numa node coreboot: - cleanup coreboot framebuffer support sched: - fix race condition in drm_sched_fini pagemap: - enable THP support - pass pagemap_addr by reference gem-shmem: - Track page accessed/dirty status across mmap/vmap gpusvm: - reenable device to device migration - fix unbalanced unclock bridge: - anx7625: Support USB-C plus DT bindings - connector: Fix EDID detection - dw-hdmi-qp: Support Vendor-Specfic and SDP Infoframes; improve others - fsl-ldb: Fix visual artifacts plus related DT property 'enable-termination-resistor' - imx8qxp-pixel-link: Improve bridge reference handling - lt9611: Support Port-B-only input plus DT bindings - tda998x: Support DRM_BRIDGE_ATTACH_NO_CONNECTOR; Clean up - Support TH1520 HDMI plus DT bindings - waveshare-dsi: Fix register and attach; Support 1..4 DSI lanes plus DT bindings - anx7625: Fix USB Type-C handling - cdns-mhdp8546-core: Handle HDCP state in bridge atomic_check - Support Lontium LT8713SX DP MST bridge plus DT bindings - analogix_dp: Use DP helpers for link training panel: - panel-jdi-lt070me05000: Use mipi-dsi multi functions - panel-edp: Support Add AUO B116XAT04.1 (HW: 1A); Support CMN N116BCL-EAK (C2); Support FriendlyELEC plus DT changes - panel-edp: Fix timings for BOE NV140WUM-N64 - ilitek-ili9882t: Allow GPIO calls to sleep - jadard: Support TAIGUAN XTI05101-01A - lxd: Support LXD M9189A plus DT bindings - mantix: Fix pixel clock; Clean up - motorola: Support Motorola Atrix 4G and Droid X2 plus DT bindings - novatek: Support Novatek/Tianma NT37700F plus DT bindings - simple: Support EDT ET057023UDBA plus DT bindings; Support Powertip PH800480T032-ZHC19 plus DT bindings; Support Waveshare 13.3" - novatek-nt36672a: Use mipi_dsi_*_multi() functions - panel-edp: Support BOE NV153WUM-N42, CMN N153JCA-ELK, CSW MNF307QS3-2 - support Himax HX83121A plus DT bindings - support JuTouch JT070TM041 plus DT bindings - support Samsung S6E8FC0 plus DT bindings - himax-hx83102c: support Samsung S6E8FC0 plus DT bindings; support backlight - ili9806e: support Rocktech RK050HR345-CT106A plus DT bindings - simple: support Tianma TM050RDH03 plus DT bindings amdgpu: - enable DC by default on CIK APUs - userq fence ioctl param size fixes - set panel_type to OLED for eDP - refactor DC i2c code - FAMS2 update - rework ttm handling to allow multiple engines - DC DCE 6.x cleanup - DC support for NUTMEG/TRAVIS DP bridge - DCN 4.2 support - GC12 idle power fix for compute - use struct drm_edid in non-DC code - enable NV12/P010 support on primary planes - support newer IP discovery tables - VCN/JPEG 5.0.2 support - GC/MES 12.1 updates - USERQ fixes - add DC idle state manager - eDP DSC seamless boot amdkfd: - GC 12.1 updates - non 4K page fixes xe: - basic Xe3p_LPG and NVL-P enabling patches - allow VM_BIND decompress support - add purgeable buffer object support - add xe_vm_get_property_ioctl - restrict multi-lrc to VCS/VECS engines - allow disabling VM overcommit in fault mode - dGPU memory optimizations - Workaround cleanups and simplification - Allow VFs VRAM quote changes using sysfs - convert GT stats to per-cpu counters - pagefault refactors - enable multi-queue on xe3p_xpc - disable DCC on PTL - make MMIO communication more robust - disable D3Cold for BMG on specific platforms - vfio: improve FLR sync for Xe VFIO i915/display: - C10/C20/LT PHY PLL divider verification - use trans push mechanism to generate PSR frame change on LNL+ - refactor DP DSC slice config - VGA decode refactoring - refactor DPT, gen2-4 overlay, masked field register macro helpers - refactor stolen memory allocation decisions - prepare for UHBR DP tunnels - refactor LT PHY PLL to use DPLL framework - implement register polling/waiting in display code - add shared stepping header between i915 and display i915: - fix potential overflow of shmem scatterlist length nouveau: - provide Z cull info to userspace - initial GA100 support - shutdown on PCI device shutdown nova-core: - harden GSP command queue - add support for large RPCs - simplify GSP sequencer and message handling - refactor falcon firmware handling - convert to new register macro - conver to new DMA coherent API - use checked arithmetic - add debugfs support for gsp-rm log buffers - fix aux device registration for multi-GPU msm: - CI: - Uprev mesa - Restore CI jobs for Qualcomm APQ8016 and APQ8096 devices - Core: - Switched to of_get_available_child_by_name() - DPU: - Fixes for DSC panels - Fixed brownout because of the frequency / OPP mismatch - Quad pipe preparation (not enabled yet) - Switched to virtual planes by default - Dropped VBIF_NRT support - Added support for Eliza platform - Reworked alpha handling - Switched to correct CWB definitions on Eliza - Dropped dummy INTF_0 on MSM8953 - Corrected INTFs related to DP-MST - DP: - Removed debug prints looking into PHY internals - DSI: - Fixes for DSC panels - RGB101010 support - Support for SC8280XP - Moved PHY bindings from display/ to phy/ - GPU: - Preemption support for x2-85 and a840 - IFPC support for a840 - SKU detection support for x2-85 and a840 - Expose AQE support (VK ray-pipeline) - Avoid locking in VM_BIND fence signaling path - Fix to avoid reclaim in GPU snapshot path - Disallow foreign mapping of _NO_SHARE BOs - HDMI: - Fixed infoframes programming - MDP5: - Dropped support for MSM8974v1 - Dropped now unused code for MSM8974 v1 and SDM660 / MSM8998 panthor: - add tracepoints for power and IRQs - fix fence handling - extend timestamp query with flags - support various sources for timestamp queries tyr: - fix names and model/versions rockchip: - vop2: use drm logging function - rk3576 displayport support - support CRTC background color atmel-hlcdc: - support sana5d65 LCD controller tilcdc: - use DT bindings schema - use managed DRM interfaces - support DRM_BRIDGE_ATTACH_NO_CONNECTOR verisilicon: - support DC8200 + DT bindings virtgpu: - support PRIME import with 3D enabled komeda: - fix integer overflow in AFBC checks mcde: - improve bridge handling gma500: - use drm client buffer for fbdev framebuffer amdxdna: - add sensors ioctls - provide NPU power estimate - support column utilization sensor - allow forcing DMA through IOMMU IOVA - support per-BO mem usage queries - refactor GEM implementation ivpu: - update boot API to v3.29.4 - limit per-user number of doorbells/contexts - perform engine reset on TDR error loongson: - replace custom code with drm_gem_ttm_dumb_map_offset() imx: - support planes behind the primary plane - fix bus-format selection vkms: - support CRTC background color v3d: - improve handling of struct v3d_stats komeda: - support Arm China Linlon D6 plus DT bindings imagination: - improve power-off sequence - support context-reset notification from firmware mediatek: - mtk_dsi: enable hs clock during pre-enable - Remove all conflicting aperture devices during probe - Add support for mt8167 display blocks" * tag 'drm-next-2026-04-15' of https://gitlab.freedesktop.org/drm/kernel: (1735 commits) drm/ttm/tests: Remove checks from ttm_pool_free_no_dma_alloc drm/ttm/tests: fix lru_count ASSERT drm/vram: remove DRM_VRAM_MM_FILE_OPERATIONS from docs drm/fb-helper: Fix a locking bug in an error path dma-fence: correct kernel-doc function parameter @flags ttm/pool: track allocated_pages per numa node. ttm/pool: make pool shrinker NUMA aware (v2) ttm/pool: drop numa specific pools ttm/pool: port to list_lru. (v2) drm/ttm: use gpu mm stats to track gpu memory allocations. (v4) mm: add gpu active/reclaim per-node stat counters (v2) gpu: nova-core: fix missing colon in SEC2 boot debug message gpu: nova-core: vbios: use from_le_bytes() for PCI ROM header parsing gpu: nova-core: bitfield: fix broken Default implementation gpu: nova-core: falcon: pad firmware DMA object size to required block alignment gpu: nova-core: gsp: fix undefined behavior in command queue code drm/shmem_helper: Make sure PMD entries get the writeable upgrade accel/ivpu: Trigger recovery on TDR with OS scheduling drm/msm: Use of_get_available_child_by_name() dt-bindings: display/msm: move DSI PHY bindings to phy/ subdir ...	2026-04-15 08:45:00 -07:00
Tvrtko Ursulin	e94b9f0154	dma-fence: Fix potential tracepoint null pointer dereferences ... Trace_dma_fence_signaled, trace_dma_fence_wait_end and trace_dma_fence_destroy can all currently dereference a null fence->ops pointer after it has been reset on fence signalling. Lets use the safe string getters for most tracepoints to avoid this class of a problem, while for the signal tracepoint we move it to before ops are cleared to avoid losing the driver and timeline name information. Apart from moving it we also need to add a new tracepoint class to bypass the safe name getters since the signaled bit is already set. For dma_fence_init we also need to use the new tracepoint class since the rcu read lock is not held there, and we can do the same for the enable signaling since there we are certain the fence cannot be signaled while we are holding the lock and have even validated the fence->ops. Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Fixes: 541c8f2468 ("dma-buf: detach fence ops on signal v3") Cc: Christian König <christian.koenig@amd.com> Cc: Philipp Stanner <phasta@kernel.org> Cc: Boris Brezillon <boris.brezillon@collabora.com> Cc: linux-media@vger.kernel.org Cc: linaro-mm-sig@lists.linaro.org Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net> Link: https://lore.kernel.org/r/20260415083207.40513-2-tvrtko.ursulin@igalia.com	2026-04-15 11:52:23 +01:00
Linus Torvalds	91a4855d6c	Networking changes for 7.1. ... Core & protocols ---------------- - Support HW queue leasing, allowing containers to be granted access to HW queues for zero-copy operations and AF_XDP. - Number of code moves to help the compiler with inlining. Avoid output arguments for returning drop reason where possible. - Rework drop handling within qdiscs to include more metadata about the reason and dropping qdisc in the tracepoints. - Remove the rtnl_lock use from IP Multicast Routing. - Pack size information into the Rx Flow Steering table pointer itself. This allows making the table itself a flat array of u32s, thus making the table allocation size a power of two. - Report TCP delayed ack timer information via socket diag. - Add ip_local_port_step_width sysctl to allow distributing the randomly selected ports more evenly throughout the allowed space. - Add support for per-route tunsrc in IPv6 segment routing. - Start work of switching sockopt handling to iov_iter. - Improve dynamic recvbuf sizing in MPTCP, limit burstiness and avoid buffer size drifting up. - Support MSG_EOR in MPTCP. - Add stp_mode attribute to the bridge driver for STP mode selection. This addresses concerns about call_usermodehelper() usage. - Remove UDP-Lite support (as announced in 2023). - Remove support for building IPv6 as a module. Remove the now unnecessary function calling indirection. Cross-tree stuff ---------------- - Move Michael MIC code from generic crypto into wireless, it's considered insecure but some WiFi networks still need it. Netfilter --------- - Switch nft_fib_ipv6 module to no longer need temporary dst_entry object allocations by using fib6_lookup() + RCU. Florian W reports this gets us ~13% higher packet rate. - Convert IPVS's global __ip_vs_mutex to per-net service_mutex and switch the service tables to be per-net. Convert some code that walks the service lists to use RCU instead of the service_mutex. - Add more opinionated input validation to lower security exposure. - Make IPVS hash tables to be per-netns and resizable. Wireless -------- - Finished assoc frame encryption/EPPKE/802.1X-over-auth. - Radar detection improvements. - Add 6 GHz incumbent signal detection APIs. - Multi-link support for FILS, probe response templates and client probing. - New APIs and mac80211 support for NAN (Neighbor Aware Networking, aka Wi-Fi Aware) so less work must be in firmware. Driver API ---------- - Add numerical ID for devlink instances (to avoid having to create fake bus/device pairs just to have an ID). Support shared devlink instances which span multiple PFs. - Add standard counters for reporting pause storm events (implement in mlx5 and fbnic). - Add configuration API for completion writeback buffering (implement in mana). - Support driver-initiated change of RSS context sizes. - Support DPLL monitoring input frequency (implement in zl3073x). - Support per-port resources in devlink (implement in mlx5). Misc ---- - Expand the YAML spec for Netfilter. Drivers ------- - Software: - macvlan: support multicast rx for bridge ports with shared source MAC address - team: decouple receive and transmit enablement for IEEE 802.3ad LACP "independent control" - Ethernet high-speed NICs: - nVidia/Mellanox: - support high order pages in zero-copy mode (for payload coalescing) - support multiple packets in a page (for systems with 64kB pages) - Broadcom 25-400GE (bnxt): - implement XDP RSS hash metadata extraction - add software fallback for UDP GSO, lowering the IOMMU cost - Broadcom 800GE (bnge): - add link status and configuration handling - add various HW and SW statistics - Marvell/Cavium: - NPC HW block support for cn20k - Huawei (hinic3): - add mailbox / control queue - add rx VLAN offload - add driver info and link management - Ethernet NICs: - Marvell/Aquantia: - support reading SFP module info on some AQC100 cards - Realtek PCI (r8169): - add support for RTL8125cp - Realtek USB (r8152): - support for the RTL8157 5Gbit chip - add 2500baseT EEE status/configuration support - Ethernet NICs embedded and off-the-shelf IP: - Synopsys (stmmac): - cleanup and reorganize SerDes handling and PCS support - cleanup descriptor handling and per-platform data - cleanup and consolidate MDIO defines and handling - shrink driver memory use for internal structures - improve Tx IRQ coalescing - improve TCP segmentation handling - add support for Spacemit K3 - Cadence (macb): - support PHYs that have inband autoneg disabled with GEM - support IEEE 802.3az EEE - rework usrio capabilities and handling - AMD (xgbe): - improve power management for S0i3 - improve TX resilience for link-down handling - Virtual: - Google cloud vNIC: - support larger ring sizes in DQO-QPL mode - improve HW-GRO handling - support UDP GSO for DQO format - PCIe NTB: - support queue count configuration - Ethernet PHYs: - automatically disable PHY autonomous EEE if MAC is in charge - Broadcom: - add BCM84891/BCM84892 support - Micrel: - support for LAN9645X internal PHY - Realtek: - add RTL8224 pair order support - support PHY LEDs on RTL8211F-VD - support spread spectrum clocking (SSC) - Maxlinear: - add PHY-level statistics via ethtool - Ethernet switches: - Maxlinear (mxl862xx): - support for bridge offloading - support for VLANs - support driver statistics - Bluetooth: - large number of fixes and new device IDs - Mediatek: - support MT6639 (MT7927) - support MT7902 SDIO - WiFi: - Intel (iwlwifi): - UNII-9 and continuing UHR work - MediaTek (mt76): - mt7996/mt7925 MLO fixes/improvements - mt7996 NPU support (HW eth/wifi traffic offload) - Qualcomm (ath12k): - monitor mode support on IPQ5332 - basic hwmon temperature reporting - support IPQ5424 - Realtek: - add USB RX aggregation to improve performance - add USB TX flow control by tracking in-flight URBs - Cellular: - IPA v5.2 support Signed-off-by: Jakub Kicinski <kuba@kernel.org> -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE6jPA+I1ugmIBA4hXMUZtbf5SIrsFAmnelNoACgkQMUZtbf5S IrtWFw//WyiXuEiGawVQONnbu1dtR+3nw/cvNpSYi0IM66vbRUB9n+9fxm2MIyG4 4jI/c/X/fxIvUxEqGez3yPn5P7KqkQR8WRYwkxrMYKRpXeukN0IDk5Euew5DskCe wtBKNJOQWKdKXff0bLQoJ9dHWYuJ2IMRVil5M3fhUbeUOXeyJD7Yn1w2ICvJAbj+ T/Hw7sEtchNaHp6h6SbaQfahkUFHQG5peNoETkZF4UDF6ALGY29WH91GXeO2lrgN IxX203KtaavV0oU8T0oixZgOc57Ns081YfFL/F1JP2HV6lgkwhuq+zxCrRTi1c9M HPTXgwD7Z80Y74nM3YTLrPfoMOP8GLBZgdV3rUpwmteM26+gMTm+O1zHUur5ZoGy D6TaMFguPTIqiRyrARa9xY/J6r9TQkc2Wfu4bIuPndKFg8xPoepuEObODnh0+5Hg 4j4pdFhIo2huENhSg7kVb/yl+1q68SFwM3RqTmx+OhCa0AyjcKIKgt/UBhismdnG r8obxzb+nXeJc2rRDuwNMwlBlcMSbep27uGt64zeHMMXVhTVqOoytNaL/X/ZpH2m A0DscUrpHvb36IoDPtanc6irP+JOh5Xe7Nw5qhkgwsMc7hlf8SyyHB4OUBBaz1qA ETSnHlfwklRmXSpWqH2LyGXjdOQpDKP46+h0W3dttMD2/cRBqYo= =EhQZ -----END PGP SIGNATURE----- Merge tag 'net-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core & protocols: - Support HW queue leasing, allowing containers to be granted access to HW queues for zero-copy operations and AF_XDP - Number of code moves to help the compiler with inlining. Avoid output arguments for returning drop reason where possible - Rework drop handling within qdiscs to include more metadata about the reason and dropping qdisc in the tracepoints - Remove the rtnl_lock use from IP Multicast Routing - Pack size information into the Rx Flow Steering table pointer itself. This allows making the table itself a flat array of u32s, thus making the table allocation size a power of two - Report TCP delayed ack timer information via socket diag - Add ip_local_port_step_width sysctl to allow distributing the randomly selected ports more evenly throughout the allowed space - Add support for per-route tunsrc in IPv6 segment routing - Start work of switching sockopt handling to iov_iter - Improve dynamic recvbuf sizing in MPTCP, limit burstiness and avoid buffer size drifting up - Support MSG_EOR in MPTCP - Add stp_mode attribute to the bridge driver for STP mode selection. This addresses concerns about call_usermodehelper() usage - Remove UDP-Lite support (as announced in 2023) - Remove support for building IPv6 as a module. Remove the now unnecessary function calling indirection Cross-tree stuff: - Move Michael MIC code from generic crypto into wireless, it's considered insecure but some WiFi networks still need it Netfilter: - Switch nft_fib_ipv6 module to no longer need temporary dst_entry object allocations by using fib6_lookup() + RCU. Florian W reports this gets us ~13% higher packet rate - Convert IPVS's global __ip_vs_mutex to per-net service_mutex and switch the service tables to be per-net. Convert some code that walks the service lists to use RCU instead of the service_mutex - Add more opinionated input validation to lower security exposure - Make IPVS hash tables to be per-netns and resizable Wireless: - Finished assoc frame encryption/EPPKE/802.1X-over-auth - Radar detection improvements - Add 6 GHz incumbent signal detection APIs - Multi-link support for FILS, probe response templates and client probing - New APIs and mac80211 support for NAN (Neighbor Aware Networking, aka Wi-Fi Aware) so less work must be in firmware Driver API: - Add numerical ID for devlink instances (to avoid having to create fake bus/device pairs just to have an ID). Support shared devlink instances which span multiple PFs - Add standard counters for reporting pause storm events (implement in mlx5 and fbnic) - Add configuration API for completion writeback buffering (implement in mana) - Support driver-initiated change of RSS context sizes - Support DPLL monitoring input frequency (implement in zl3073x) - Support per-port resources in devlink (implement in mlx5) Misc: - Expand the YAML spec for Netfilter Drivers - Software: - macvlan: support multicast rx for bridge ports with shared source MAC address - team: decouple receive and transmit enablement for IEEE 802.3ad LACP "independent control" - Ethernet high-speed NICs: - nVidia/Mellanox: - support high order pages in zero-copy mode (for payload coalescing) - support multiple packets in a page (for systems with 64kB pages) - Broadcom 25-400GE (bnxt): - implement XDP RSS hash metadata extraction - add software fallback for UDP GSO, lowering the IOMMU cost - Broadcom 800GE (bnge): - add link status and configuration handling - add various HW and SW statistics - Marvell/Cavium: - NPC HW block support for cn20k - Huawei (hinic3): - add mailbox / control queue - add rx VLAN offload - add driver info and link management - Ethernet NICs: - Marvell/Aquantia: - support reading SFP module info on some AQC100 cards - Realtek PCI (r8169): - add support for RTL8125cp - Realtek USB (r8152): - support for the RTL8157 5Gbit chip - add 2500baseT EEE status/configuration support - Ethernet NICs embedded and off-the-shelf IP: - Synopsys (stmmac): - cleanup and reorganize SerDes handling and PCS support - cleanup descriptor handling and per-platform data - cleanup and consolidate MDIO defines and handling - shrink driver memory use for internal structures - improve Tx IRQ coalescing - improve TCP segmentation handling - add support for Spacemit K3 - Cadence (macb): - support PHYs that have inband autoneg disabled with GEM - support IEEE 802.3az EEE - rework usrio capabilities and handling - AMD (xgbe): - improve power management for S0i3 - improve TX resilience for link-down handling - Virtual: - Google cloud vNIC: - support larger ring sizes in DQO-QPL mode - improve HW-GRO handling - support UDP GSO for DQO format - PCIe NTB: - support queue count configuration - Ethernet PHYs: - automatically disable PHY autonomous EEE if MAC is in charge - Broadcom: - add BCM84891/BCM84892 support - Micrel: - support for LAN9645X internal PHY - Realtek: - add RTL8224 pair order support - support PHY LEDs on RTL8211F-VD - support spread spectrum clocking (SSC) - Maxlinear: - add PHY-level statistics via ethtool - Ethernet switches: - Maxlinear (mxl862xx): - support for bridge offloading - support for VLANs - support driver statistics - Bluetooth: - large number of fixes and new device IDs - Mediatek: - support MT6639 (MT7927) - support MT7902 SDIO - WiFi: - Intel (iwlwifi): - UNII-9 and continuing UHR work - MediaTek (mt76): - mt7996/mt7925 MLO fixes/improvements - mt7996 NPU support (HW eth/wifi traffic offload) - Qualcomm (ath12k): - monitor mode support on IPQ5332 - basic hwmon temperature reporting - support IPQ5424 - Realtek: - add USB RX aggregation to improve performance - add USB TX flow control by tracking in-flight URBs - Cellular: - IPA v5.2 support" * tag 'net-next-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1561 commits) net: pse-pd: fix kernel-doc function name for pse_control_find_by_id() wireguard: device: use exit_rtnl callback instead of manual rtnl_lock in pre_exit wireguard: allowedips: remove redundant space tools: ynl: add sample for wireguard wireguard: allowedips: Use kfree_rcu() instead of call_rcu() MAINTAINERS: Add netkit selftest files selftests/net: Add additional test coverage in nk_qlease selftests/net: Split netdevsim tests from HW tests in nk_qlease tools/ynl: Make YnlFamily closeable as a context manager net: airoha: Add missing PPE configurations in airoha_ppe_hw_init() net: airoha: Fix VIP configuration for AN7583 SoC net: caif: clear client service pointer on teardown net: strparser: fix skb_head leak in strp_abort_strp() net: usb: cdc-phonet: fix skb frags[] overflow in rx_complete() selftests/bpf: add test for xdp_master_redirect with bond not up net, bpf: fix null-ptr-deref in xdp_master_redirect() for down master net: airoha: Remove PCE_MC_EN_MASK bit in REG_FE_PCE_CFG configuration sctp: disable BH before calling udp_tunnel_xmit_skb() sctp: fix missing encap_port propagation for GSO fragments net: airoha: Rely on net_device pointer in ETS callbacks ...	2026-04-14 18:36:10 -07:00
Linus Torvalds	c1fe867b5b	Updates for the timer/timekeeping core: ... - A rework of the hrtimer subsystem to reduce the overhead for frequently armed timers, especially the hrtick scheduler timer. - Better timer locality decision - Simplification of the evaluation of the first expiry time by keeping track of the neighbor timers in the RB-tree by providing a RB-tree variant with neighbor links. That avoids walking the RB-tree on removal to find the next expiry time, but even more important allows to quickly evaluate whether a timer which is rearmed changes the position in the RB-tree with the modified expiry time or not. If not, the dequeue/enqueue sequence which both can end up in rebalancing can be completely avoided. - Deferred reprogramming of the underlying clock event device. This optimizes for the situation where a hrtimer callback sets the need resched bit. In that case the code attempts to defer the re-programming of the clock event device up to the point where the scheduler has picked the next task and has the next hrtick timer armed. In case that there is no immediate reschedule or soft interrupts have to be handled before reaching the reschedule point in the interrupt entry code the clock event is reprogrammed in one of those code paths to prevent that the timer becomes stale. - Support for clocksource coupled clockevents The TSC deadline timer is coupled to the TSC. The next event is programmed in TSC time. Currently this is done by converting the CLOCK_MONOTONIC based expiry value into a relative timeout, converting it into TSC ticks, reading the TSC adding the delta ticks and writing the deadline MSR. As the timekeeping core has the conversion factors for the TSC already, the whole back and forth conversion can be completely avoided. The timekeeping core calculates the reverse conversion factors from nanoseconds to TSC ticks and utilizes the base timestamps of TSC and CLOCK_MONOTONIC which are updated once per tick. This allows a direct conversion into the TSC deadline value without reading the time and as a bonus keeps the deadline conversion in sync with the TSC conversion factors, which are updated by adjtimex() on systems with NTP/PTP enabled. - Allow inlining of the clocksource read and clockevent write functions when they are tiny enough, e.g. on x86 RDTSC and WRMSR. With all those enhancements in place a hrtick enabled scheduler provides the same performance as without hrtick. But also other hrtimer users obviously benefit from these optimizations. - Robustness improvements and cleanups of historical sins in the hrtimer and timekeeping code. - Rewrite of the clocksource watchdog. The clocksource watchdog code has over time reached the state of an impenetrable maze of duct tape and staples. The original design, which was made in the context of systems far smaller than today, is based on the assumption that the to be monitored clocksource (TSC) can be trivially compared against a known to be stable clocksource (HPET/ACPI-PM timer). Over the years this rather naive approach turned out to have major flaws. Long delays between the watchdog invocations can cause wrap arounds of the reference clocksource. The access to the reference clocksource degrades on large multi-sockets systems dure to interconnect congestion. This has been addressed with various heuristics which degraded the accuracy of the watchdog to the point that it fails to detect actual TSC problems on older hardware which exposes slow inter CPU drifts due to firmware manipulating the TSC to hide SMI time. The rewrite addresses this by: - Restricting the validation against the reference clocksource to the boot CPU which is usually closest to the legacy block which contains the reference clocksource (HPET/ACPI-PM). - Do a round robin validation betwen the boot CPU and the other CPUs based only on the TSC with an algorithm similar to the TSC synchronization code during CPU hotplug. - Being more leniant versus remote timeouts - The usual tiny fixes, cleanups and enhancements all over the place -----BEGIN PGP SIGNATURE----- iQJEBAABCgAuFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmnbxdMQHHRnbHhAa2Vy bmVsLm9yZwAKCRCmGPVMDXSYoeq6EAC4h9wuBr5yCkxmog1Bhlk9cnK0oX1THb7V Q4z6DrYAiDXP6z4IDwqSW+3vvmNw1QXOeqpyMTiiIcQ5mNSs1IDnCt5HOEwY+ICm fiSUMYkXkH6xdFWspYWFkD7aExHJRT3hd/bo+WnXGHhHclPj5NHZssLMIDboHrzX jLV1hljmthfwg/uOXDGmQUPRFjqr2ZQjo7zGA5SwfVg8Krz7g/qRVy2wUns9TdW/ NYwihDm1YV7qkK/+f1GnMdd70toqb1OZo/fS9FPbBrPLdyi8V+UbnFSUeZu8kCwV KubAzjLZR4xYCnrlaHhoi208GMd0TOvHMOrdAA0zkQHfhmszGl4N0pbF/EI29Ft2 tQG/FUTG+nzgNOrMCPN2nr3u/UOXLP+gO+2hkyyQjqUP35IyaTYQn10JgBmPTdJL Ab6E8WL9gTMCd+t/bVjdU/B8W9ruMihKBtWkTfMBCcQ9uNJFCEGzrcMF8hzFYRTs /4rMDr3NlGYydAnbKPj6bkC5gtjBvh/L08kOdUFyXCMSqIzvJkZJ4241ogl1Awi6 VfdwjF5KZCQo3M1ujpep+1L010wC/yulqLt2brQMO9Nt05dRhgwM3lxy7cnlMNm3 NdfMgi+OG0CzQ+ZUpvo20hCgTDUVgWN9g5R3rar8FJX+Ym3T+ZoEKlShZF+fSRjf YAUIbUyi7A== =2qc8 -----END PGP SIGNATURE----- Merge tag 'timers-core-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer core updates from Thomas Gleixner: - A rework of the hrtimer subsystem to reduce the overhead for frequently armed timers, especially the hrtick scheduler timer: - Better timer locality decision - Simplification of the evaluation of the first expiry time by keeping track of the neighbor timers in the RB-tree by providing a RB-tree variant with neighbor links. That avoids walking the RB-tree on removal to find the next expiry time, but even more important allows to quickly evaluate whether a timer which is rearmed changes the position in the RB-tree with the modified expiry time or not. If not, the dequeue/enqueue sequence which both can end up in rebalancing can be completely avoided. - Deferred reprogramming of the underlying clock event device. This optimizes for the situation where a hrtimer callback sets the need resched bit. In that case the code attempts to defer the re-programming of the clock event device up to the point where the scheduler has picked the next task and has the next hrtick timer armed. In case that there is no immediate reschedule or soft interrupts have to be handled before reaching the reschedule point in the interrupt entry code the clock event is reprogrammed in one of those code paths to prevent that the timer becomes stale. - Support for clocksource coupled clockevents The TSC deadline timer is coupled to the TSC. The next event is programmed in TSC time. Currently this is done by converting the CLOCK_MONOTONIC based expiry value into a relative timeout, converting it into TSC ticks, reading the TSC adding the delta ticks and writing the deadline MSR. As the timekeeping core has the conversion factors for the TSC already, the whole back and forth conversion can be completely avoided. The timekeeping core calculates the reverse conversion factors from nanoseconds to TSC ticks and utilizes the base timestamps of TSC and CLOCK_MONOTONIC which are updated once per tick. This allows a direct conversion into the TSC deadline value without reading the time and as a bonus keeps the deadline conversion in sync with the TSC conversion factors, which are updated by adjtimex() on systems with NTP/PTP enabled. - Allow inlining of the clocksource read and clockevent write functions when they are tiny enough, e.g. on x86 RDTSC and WRMSR. With all those enhancements in place a hrtick enabled scheduler provides the same performance as without hrtick. But also other hrtimer users obviously benefit from these optimizations. - Robustness improvements and cleanups of historical sins in the hrtimer and timekeeping code. - Rewrite of the clocksource watchdog. The clocksource watchdog code has over time reached the state of an impenetrable maze of duct tape and staples. The original design, which was made in the context of systems far smaller than today, is based on the assumption that the to be monitored clocksource (TSC) can be trivially compared against a known to be stable clocksource (HPET/ACPI-PM timer). Over the years this rather naive approach turned out to have major flaws. Long delays between the watchdog invocations can cause wrap arounds of the reference clocksource. The access to the reference clocksource degrades on large multi-sockets systems dure to interconnect congestion. This has been addressed with various heuristics which degraded the accuracy of the watchdog to the point that it fails to detect actual TSC problems on older hardware which exposes slow inter CPU drifts due to firmware manipulating the TSC to hide SMI time. The rewrite addresses this by: - Restricting the validation against the reference clocksource to the boot CPU which is usually closest to the legacy block which contains the reference clocksource (HPET/ACPI-PM). - Do a round robin validation betwen the boot CPU and the other CPUs based only on the TSC with an algorithm similar to the TSC synchronization code during CPU hotplug. - Being more leniant versus remote timeouts - The usual tiny fixes, cleanups and enhancements all over the place * tag 'timers-core-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (75 commits) alarmtimer: Access timerqueue node under lock in suspend hrtimer: Fix incorrect #endif comment for BITS_PER_LONG check posix-timers: Fix stale function name in comment timers: Get this_cpu once while clearing the idle state clocksource: Rewrite watchdog code completely clocksource: Don't use non-continuous clocksources as watchdog x86/tsc: Handle CLOCK_SOURCE_VALID_FOR_HRES correctly MIPS: Don't select CLOCKSOURCE_WATCHDOG parisc: Remove unused clocksource flags hrtimer: Add a helper to retrieve a hrtimer from its timerqueue node hrtimer: Remove trailing comma after HRTIMER_MAX_CLOCK_BASES hrtimer: Mark index and clockid of clock base as const hrtimer: Drop unnecessary pointer indirection in hrtimer_expire_entry event hrtimer: Drop spurious space in 'enum hrtimer_base_type' hrtimer: Don't zero-initialize ret in hrtimer_nanosleep() hrtimer: Remove hrtimer_get_expires_ns() timekeeping: Mark offsets array as const timekeeping/auxclock: Consistently use raw timekeeper for tk_setup_internals() timer_list: Print offset as signed integer tracing: Use explicit array size instead of sentinel elements in symbol printing ...	2026-04-14 10:27:07 -07:00
Linus Torvalds	230fb3a33e	Changes since last update: ... - Validate xattr h_shared_count to report -EFSCORRUPTED explicitly for crafted images - Verify metadata accesses for file-backed mounts via rw_verify_area() - Fix FS_IOC_GETFSLABEL to include the trailing NUL byte, consistent with ext4 and xfs - Properly handle 48-bit on-disk blocks/uniaddr for extra devices - Fix an index underflow in the LZ4 in-place decompression that can cause out-of-bounds accesses with crafted images - Minor fixes and cleanups -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEQ0A6bDUS9Y+83NPFUXZn5Zlu5qoFAmncchsRHHhpYW5nQGtl cm5lbC5vcmcACgkQUXZn5Zlu5qoXXA//S3iYT8i7iyyeMVwrP5/10k6AbFGDJTar eTeLx9itzsxDDNIqih6hmcQKb4fBhHbLA7fMt183+HnO8j2gW9oGUWRfYRWuuRj2 7xz0JOe5lcRkwS/fzthywOmtHWVGqLZ/JME3bCoZkLOpK8cQSG0o0ZTJjYufdcev 2UZAIjU2eWrA1lSRfZdnfM5N5oKixOTzEb9/serifgBygYZvNSSPRLecEQPldYKY 5Db00Q5RnxVwX7HVBmAg8pYyX6ogeIo4Mnh9Itra/vyIJZ9OdgCUVfjx9Q2qAAA5 gMOv6KppnMZGa8JNvpxg/7+/K/vx2wuNxcf2w0Bz4dVs/6Sby8tbrn2iLJjNYCPh Y72aysH51EZK5yD+GEGFKG0rDuBOeW+kSicl8IlfZWDj5hLU4hjboOKNXAZBh921 DQcoHfkPhf8Ay0z0dDW7Xod9w2VNVtiSXP08T0TvAEelHVMYwkTVCST2bQlOFVrO 8zy54QwQ5e6deFV5LSpTQn4Nj4+iPqZRaojqX2xlqFd17DXCzu6VolpCr9cIiNmO WlAKg3WkomuLcyb1cYt7eNK4PbHZGjUmNjUS+OG6hbqXBMLn5IUF+F31syTf/Q9f erSM89entNNk6kVwqiRIVxO314iPp5q9rFDGzBJjxyR99V+oYqv0JVSb7X3SWPTu w4VmhbQRsiM= =rEW8 -----END PGP SIGNATURE----- Merge tag 'erofs-for-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs Pull erofs updates from Gao Xiang: - Validate xattr h_shared_count to report -EFSCORRUPTED explicitly for crafted images - Verify metadata accesses for file-backed mounts via rw_verify_area() - Fix FS_IOC_GETFSLABEL to include the trailing NUL byte, consistent with ext4 and xfs - Properly handle 48-bit on-disk blocks/uniaddr for extra devices - Fix an index underflow in the LZ4 in-place decompression that can cause out-of-bounds accesses with crafted images - Minor fixes and cleanups * tag 'erofs-for-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs: erofs: error out obviously illegal extents in advance erofs: clean up encoded map flags erofs: fix unsigned underflow in z_erofs_lz4_handle_overlap() erofs: handle 48-bit blocks/uniaddr for extra devices erofs: include the trailing NUL in FS_IOC_GETFSLABEL erofs: ensure all folios are managed in erofs_try_to_free_all_cached_folios() erofs: verify metadata accesses for file-backed mounts erofs: harden h_shared_count in erofs_init_inode_xattrs()	2026-04-13 16:59:19 -07:00
Linus Torvalds	c92b4d3dd5	for-7.1-tag ... -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE8rQSAMVO+zA4DBdWxWXV+ddtWDsFAmnYSG0ACgkQxWXV+ddt WDumDQ/9E8ms1vZcfMwZUf48o7Z2fHnZMUy6dXKHnH72NiRrqSP2jZnhluT6qGqb MmmnqvmKFNfJ0J5QLZTgFz/MWzY7PQEIG8WkQ3JvT6iKO5Csa2vFzCXv1oaGWo+m TIw++3IS+GliKYQedgVXMYRKFc24OP95RO+Grsh8pMOXWcpSO60oSrTPyzbkdfid +Gv4CpSRTCCl/qQ8ZX2PRQ9tLJtR2IAnJBWkwE/MPWxFfkt0oBiauy/BoiddGwrl ocDn5fH2CnORwONLGPbVg0ScVNMaRFJfYVrI18N8pfT+4ZVeJFiWGiRnrqSmk8PG a8BT51VPZZunyGoVFZmpqOhsy8PtqpjX0ljpebY7K69fH+1ewrWVE9ovs/nZ6Hq+ DgB9pXu2OxKdyByHfr8Pl/0A2naWOrQ0JHOGnVsEg2qDi67vy5EBUIYQbiS9uo4s IFdd5bA04DS0Khzp2Y8Crrc2tWootsRCcUs6oiwKgKVBoqtNbFvVHKJqfi8XZB6i W4/rL+F0gBVzR127TZF+tejd1jq9u6WOBRKlwkHK5DoWXiv84oLv/zdwtqinTWLs N7LOFfDgYwH1YNPx12tEm9DW3Ef76RlHPZiTAmG4NUphmgwkKaYOosqsX7WvrMqR kkeKfbsRm4M/lQDLwd8IBUloMhl2+uspxJrkNUy/31pxWxByGvk= =mVDJ -----END PGP SIGNATURE----- Merge tag 'for-7.1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux Pull btrfs updates from David Sterba: "User visible changes: - move shutdown ioctl support out of experimental features, a forced stop of filesystem operation until the next unmount; additionally there's a super block operation to forcibly remove a device from under the filesystem that could lead to a shutdown or not if the redundancy allows that - report filesystem shutdown using fserror mechanism - tree-checker updates: - verify free space info, extent and bitmap items - verify remap-tree items and related data in block group items Performance improvements: - speed up clearing first extent in the tracked range (+10% throughput on sample workload) - reduce COW rewrites of extent buffers during the same transaction - avoid taking big device lock to update device stats during transaction commit - fix unnecessary flush on close when truncating empty files (observed in practice on a backup application) - prevent direct reclaim during compressed readahead to avoid stalls under memory pressure Notable fixes: - fix chunk allocation strategy on RAID1-like block groups with disproportionate device sizes, this could lead to ENOSPC due to skewed reservation estimates - adjust metadata reservation overcommit ratio to be less aggressive and also try to flush if possible, this avoids ENOSPC and potential transaction aborts in some edge cases (that are otherwise hard to reproduce) - fix silent IO error in encoded writes and ordered extent split in zoned mode, the error was not correctly propagated to the address space and could lead to zeroed ranges - don't mark inline files NOCOMPRESS unexpectedly, the intent was to do that for single block writes of regular files - fix deadlock between reflink and transaction commit when using flushoncommit - fix overly strict item check of a running dev-replace operation Core: - zoned mode space reservation fixes: - cap delayed refs metadata reservation to avoid overcommit - update logic to reclaim partially unusable zones - add another state to flush and reclaim partially used zone - limit number of zones reclaimed in one go to avoid blocking other operations - don't let log trees consume global reserve on overcommit and fall back to transaction commit - revalidate extent buffer when checking its up-to-date status - add self tests for zoned mode block group specifics - reduce atomic allocations in some qgroup paths - avoid unnecessary root node COW during snapshotting - start new transaction in block group relocation conditionally - faster check of NOCOW files on currently snapshotted root - change how compressed bio size is tracked from bio and reduce the structure size - new tracepoint for search slot restart tracking - checksum list manipulation improvements - type, parameter cleanups, refactoring - error handling improvements, transaction abort call adjustments" * tag 'for-7.1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (116 commits) btrfs: btrfs_log_dev_io_error() on all bio errors btrfs: fix silent IO error loss in encoded writes and zoned split btrfs: skip clearing EXTENT_DEFRAG for NOCOW ordered extents btrfs: use BTRFS_FS_UPDATE_UUID_TREE_GEN flag for UUID tree rescan check btrfs: remove duplicate journal_info reset on failure to commit transaction btrfs: tag as unlikely if statements that check for fs in error state btrfs: fix double free in create_space_info() error path btrfs: fix double free in create_space_info_sub_group() error path btrfs: do not reject a valid running dev-replace btrfs: only invalidate btree inode pages after all ebs are released btrfs: prevent direct reclaim during compressed readahead btrfs: replace BUG_ON() with error return in cache_save_setup() btrfs: zstd: don't cache sectorsize in a local variable btrfs: zlib: don't cache sectorsize in a local variable btrfs: zlib: drop redundant folio address variable btrfs: lzo: inline read/write length helpers btrfs: use common eb range validation in read_extent_buffer_to_user_nofault() btrfs: read eb folio index right before loops btrfs: rename local variable for offset in folio btrfs: unify types for binary search variables ...	2026-04-13 16:35:32 -07:00
Linus Torvalds	ef3da345cc	vfs-7.1-rc1.misc ... Please consider pulling these changes from the signed vfs-7.1-rc1.misc tag. Thanks! Christian -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCadjZCwAKCRCRxhvAZXjc ohhBAQCAmQMlMRAXAgUZFYMTZpeQlcujP5rv+/vT2Tf/xS76YwD/dRDaw1FH294+ qtk/Z1NjleNixzE2sld1K9J32NxeyAc= =+g9q -----END PGP SIGNATURE----- Merge tag 'vfs-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Pull misc vfs updates from Christian Brauner: "Features: - coredump: add tracepoint for coredump events - fs: hide file and bfile caches behind runtime const machinery Fixes: - fix architecture-specific compat_ftruncate64 implementations - dcache: Limit the minimal number of bucket to two - fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START - fs/mbcache: cancel shrink work before destroying the cache - dcache: permit dynamic_dname()s up to NAME_MAX Cleanups: - remove or unexport unused fs_context infrastructure - trivial ->setattr cleanups - selftests/filesystems: Assume that TIOCGPTPEER is defined - writeback: fix kernel-doc function name mismatch for wb_put_many() - autofs: replace manual symlink buffer allocation in autofs_dir_symlink - init/initramfs.c: trivial fix: FSM -> Finite-state machine - fs: remove stale and duplicate forward declarations - readdir: Introduce dirent_size() - fs: Replace user_access_{begin/end} by scoped user access - kernel: acct: fix duplicate word in comment - fs: write a better comment in step_into() concerning .mnt assignment - fs: attr: fix comment formatting and spelling issues" * tag 'vfs-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (28 commits) dcache: permit dynamic_dname()s up to NAME_MAX fs: attr: fix comment formatting and spelling issues fs: hide file and bfile caches behind runtime const machinery fs: write a better comment in step_into() concerning .mnt assignment proc: rename proc_notify_change to proc_setattr proc: rename proc_setattr to proc_nochmod_setattr affs: rename affs_notify_change to affs_setattr adfs: rename adfs_notify_change to adfs_setattr hfs: update comments on hfs_inode_setattr kernel: acct: fix duplicate word in comment fs: Replace user_access_{begin/end} by scoped user access readdir: Introduce dirent_size() coredump: add tracepoint for coredump events fs: remove do_sys_truncate fs: pass on FTRUNCATE_* flags to do_truncate fs: fix archiecture-specific compat_ftruncate64 fs: remove stale and duplicate forward declarations init/initramfs.c: trivial fix: FSM -> Finite-state machine autofs: replace manual symlink buffer allocation in autofs_dir_symlink fs/mbcache: cancel shrink work before destroying the cache ...	2026-04-13 14:20:11 -07:00
Linus Torvalds	b7d74ea0fd	vfs-7.1-rc1.kino ... Please consider pulling these changes from the signed vfs-7.1-rc1.kino tag. Thanks! Christian -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCadjZCgAKCRCRxhvAZXjc otmnAP4sbsxZQdz2TG2hJuOwnEZOkkxZQOUMc3ERVyZaWXIeTAEA7e5M+8FpoG9n 8ipO76UoaXdGLESrqVdp9EOhLqOW7QY= =uMeJ -----END PGP SIGNATURE----- Merge tag 'vfs-7.1-rc1.kino' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Pull vfs i_ino updates from Christian Brauner: "For historical reasons, the inode->i_ino field is an unsigned long, which means that it's 32 bits on 32 bit architectures. This has caused a number of filesystems to implement hacks to hash a 64-bit identifier into a 32-bit field, and deprives us of a universal identifier field for an inode. This changes the inode->i_ino field from an unsigned long to a u64. This shouldn't make any material difference on 64-bit hosts, but 32-bit hosts will see struct inode grow by at least 4 bytes. This could have effects on slabcache sizes and field alignment. The bulk of the changes are to format strings and tracepoints, since the kernel itself doesn't care that much about the i_ino field. The first patch changes some vfs function arguments, so check that one out carefully. With this change, we may be able to shrink some inode structures. For instance, struct nfs_inode has a fileid field that holds the 64-bit inode number. With this set of changes, that field could be eliminated. I'd rather leave that sort of cleanups for later just to keep this simple" * tag 'vfs-7.1-rc1.kino' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: nilfs2: fix 64-bit division operations in nilfs_bmap_find_target_in_group() EVM: add comment describing why ino field is still unsigned long vfs: remove externs from fs.h on functions modified by i_ino widening treewide: fix missed i_ino format specifier conversions ext4: fix signed format specifier in ext4_load_inode trace event treewide: change inode->i_ino from unsigned long to u64 nilfs2: widen trace event i_ino fields to u64 f2fs: widen trace event i_ino fields to u64 ext4: widen trace event i_ino fields to u64 zonefs: widen trace event i_ino fields to u64 hugetlbfs: widen trace event i_ino fields to u64 ext2: widen trace event i_ino fields to u64 cachefiles: widen trace event i_ino fields to u64 vfs: widen trace event i_ino fields to u64 net: change sock.sk_ino and sock_i_ino() to u64 audit: widen ino fields to u64 vfs: widen inode hash/lookup functions to u64	2026-04-13 12:19:01 -07:00
Chuck Lever	7a079ab57c	xprtrdma: Replace rpcrdma_mr_seg with xdr_buf cursor ... The FRWR registration path converts data through three representations: xdr_buf -> rpcrdma_mr_seg[] -> scatterlist[] -> ib_map_mr_sg(). The rpcrdma_mr_seg intermediate is a relic of when multiple registration strategies existed (FMR, physical, FRWR). Only FRWR remains, so this indirection and the 6240-byte rl_segments[260] array embedded in each rpcrdma_req serve no purpose. Introduce struct rpcrdma_xdr_cursor to track position within an xdr_buf during iterative MR registration. Rewrite frwr_map to populate scatterlist entries directly from the xdr_buf regions (head kvec, page list, tail kvec). The boundary logic for non-SG_GAPS devices is simpler because the xdr_buf structure guarantees that page-region entries after the first start at offset 0, and that head/tail kvecs are separate regions that naturally break at MR boundaries. Fix a pre-existing bug in rpcrdma_encode_write_list where the write-pad statistics accumulator added mr->mr_length from the last data MR rather than the write-pad MR. The refactored code uses ep->re_write_pad_mr->mr_length. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>	2026-04-13 12:04:58 -07:00
Thomas Gleixner	ff1c0c5d07	Merge branch 'timers/urgent' into timers/core ... to resolve the conflict with urgent fixes.	2026-04-11 07:58:33 +02:00
Gao Xiang	5c40d2e9e3	erofs: clean up encoded map flags ... - Remove EROFS_MAP_ENCODED since it was always set together with EROFS_MAP_MAPPED for compressed extents and checked redundantly; - Replace the EROFS_MAP_FULL_MAPPED flag with the opposite EROFS_MAP_PARTIAL_MAPPED flag so that extents are implicitly fully mapped initially to simplify the logic; - Make fragment extents independent of EROFS_MAP_MAPPED since they are not directly allocated on disk; thus fragment extents are no longer twisted with mapped extents. Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>	2026-04-10 16:53:39 +08:00
Jakub Kicinski	b6e39e4846	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net ... Cross-merge networking fixes after downstream PR (net-7.0-rc8). Conflicts: net/ipv6/seg6_iptunnel.c c3812651b5 ("seg6: separate dst_cache for input and output paths in seg6 lwtunnel") 78723a62b9 ("seg6: add per-route tunnel source address") https://lore.kernel.org/adZhwtOYfo-0ImSa@sirena.org.uk net/ipv4/icmp.c fde29fd934 ("ipv4: icmp: fix null-ptr-deref in icmp_build_probe()") d98adfbdd5 ("ipv4: drop ipv6_stub usage and use direct function calls") https://lore.kernel.org/adO3dccqnr6j-BL9@sirena.org.uk Adjacent changes: drivers/net/ethernet/stmicro/stmmac/chain_mode.c 51f4e090b9 ("net: stmmac: fix integer underflow in chain mode") 6b4286e055 ("net: stmmac: rename STMMAC_GET_ENTRY() -> STMMAC_NEXT_ENTRY()") Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2026-04-09 13:20:59 -07:00
Paolo Abeni	d2000361e4	mptcp: better mptcp-level RTT estimator ... The current MPTCP-level RTT estimator has several issues. On high speed links, the MPTCP-level receive buffer auto-tuning happens with a frequency well above the TCP-level's one. That in turn can cause excessive/unneeded receive buffer increase. On such links, the initial rtt_us value is considerably higher than the actual delay, and the current mptcp_rcv_space_adjust() updates msk->rcvq_space.rtt_us with a period equal to the such field previous value. If the initial rtt_us is 40ms, its first update will happen after 40ms, even if the subflows see actual RTT orders of magnitude lower. Additionally: - setting the msk RTT to the maximum among all the subflows RTTs makes DRS constantly overshooting the rcvbuf size when a subflow has considerable higher latency than the other(s). - during unidirectional bulk transfers with multiple active subflows, the TCP-level RTT estimator occasionally sees considerably higher value than the real link delay, i.e. when the packet scheduler reacts to an incoming ACK on given subflow pushing data on a different subflow. - currently inactive but still open subflows (i.e. switched to backup mode) are always considered when computing the msk-level RTT. Address the all the issues above with a more accurate RTT estimation strategy: the MPTCP-level RTT is set to the minimum of all the subflows actually feeding data into the MPTCP receive buffer, using a small sliding window. While at it, also use EWMA to compute the msk-level scaling_ratio, to that MPTCP can avoid traversing the subflow list is mptcp_rcv_space_adjust(). Use some care to avoid updating msk and ssk level fields too often. Fixes: a6b118febb ("mptcp: add receive buffer auto-tuning") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260407-net-next-mptcp-reduce-rbuf-v2-1-0d1d135bf6f6@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2026-04-08 19:32:00 -07:00
Marc Dionne	0cd3e3f3f2	rxrpc: Fix to request an ack if window is limited ... Peers may only send immediate acks for every 2 UDP packets received. When sending a jumbogram, it is important to check that there is sufficient window space to send another same sized jumbogram following the current one, and request an ack if there isn't. Failure to do so may cause the call to stall waiting for an ack until the resend timer fires. Where jumbograms are in use this causes a very significant drop in performance. Fixes: fe24a54943 ("rxrpc: Send jumbo DATA packets") Signed-off-by: Marc Dionne <marc.dionne@auristor.com> Signed-off-by: David Howells <dhowells@redhat.com> cc: Jeffrey Altman <jaltman@auristor.com> cc: Simon Horman <horms@kernel.org> cc: linux-afs@lists.infradead.org cc: stable@kernel.org Link: https://patch.msgid.link/20260408121252.2249051-10-dhowells@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2026-04-08 18:44:33 -07:00
Alok Tiwari	b33f5741bb	rxrpc: Fix use of wrong skb when comparing queued RESP challenge serial ... In rxrpc_post_response(), the code should be comparing the challenge serial number from the cached response before deciding to switch to a newer response, but looks at the newer packet private data instead, rendering the comparison always false. Fix this by switching to look at the older packet. Fix further[1] to substitute the new packet in place of the old one if newer and also to release whichever we don't use. Fixes: 5800b1cf3f ("rxrpc: Allow CHALLENGEs to the passed to the app for a RESPONSE") Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com> Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Jeffrey Altman <jaltman@auristor.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: Simon Horman <horms@kernel.org> cc: linux-afs@lists.infradead.org cc: stable@kernel.org Link: https://sashiko.dev/#/patchset/20260319150150.4189381-1-dhowells%40redhat.com [1] Link: https://patch.msgid.link/20260408121252.2249051-7-dhowells@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2026-04-08 18:44:32 -07:00
David Howells	146d4ab94c	rxrpc: Fix call removal to use RCU safe deletion ... Fix rxrpc call removal from the rxnet->calls list to use list_del_rcu() rather than list_del_init() to prevent stuffing up reading /proc/net/rxrpc/calls from potentially getting into an infinite loop. This, however, means that list_empty() no longer works on an entry that's been deleted from the list, making it harder to detect prior deletion. Fix this by: Firstly, make rxrpc_destroy_all_calls() only dump the first ten calls that are unexpectedly still on the list. Limiting the number of steps means there's no need to call cond_resched() or to remove calls from the list here, thereby eliminating the need for rxrpc_put_call() to check for that. rxrpc_put_call() can then be fixed to unconditionally delete the call from the list as it is the only place that the deletion occurs. Fixes: 2baec2c3f8 ("rxrpc: Support network namespacing") Closes: https://sashiko.dev/#/patchset/20260319150150.4189381-1-dhowells%40redhat.com Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: Jeffrey Altman <jaltman@auristor.com> cc: Linus Torvalds <torvalds@linux-foundation.org> cc: Simon Horman <horms@kernel.org> cc: linux-afs@lists.infradead.org cc: stable@kernel.org Link: https://patch.msgid.link/20260408121252.2249051-5-dhowells@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2026-04-08 18:44:32 -07:00
CaoRuichuang	0ec6be9535	tracing: Report ipi_raise target CPUs as cpumask ... Bugzilla 217447 points out that ftrace bitmask fields still use the legacy dynamic-array format, which makes trace consumers treat them as unsigned long arrays instead of bitmaps. This is visible in the ipi events today: ipi_send_cpumask already reports its CPU mask as '__data_loc cpumask_t', but ipi_raise still exposes target_cpus as '__data_loc unsigned long[]'. Switch ipi_raise to __cpumask() and the matching helpers so its tracefs format matches the existing cpumask representation used by the other ipi event. The underlying storage size stays the same, but trace data consumers can now recognize the field as a cpumask directly. Link: https://patch.msgid.link/20260406162434.40767-1-create0818@163.com Link: https://bugzilla.kernel.org/show_bug.cgi?id=217447 Signed-off-by: CaoRuichuang <create0818@163.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>	2026-04-08 16:26:22 -04:00
Leo Martins	cc970d21c4	btrfs: add tracepoint for search slot restart tracking ... Add a btrfs_search_slot_restart tracepoint that fires at each restart site in btrfs_search_slot(), recording the root, tree level, and reason for the restart. This enables tracking search slot restarts which contribute to COW amplification under memory pressure. The four restart reasons are: - write_lock: insufficient write lock level, need to restart with higher lock - setup_nodes: node setup returned -EAGAIN - slot_zero: insertion at slot 0 requires higher write lock level - read_block: read_block_for_search returned -EAGAIN (block not cached or lock contention) COW counts are already tracked by the existing trace_btrfs_cow_block() tracepoint. The per-restart-site tracepoint avoids counter overhead in the critical path when tracepoints are disabled, and provides richer per-event information that bpftrace scripts can aggregate into counts, histograms, and per-root breakdowns. Reviewed-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: Boris Burkov <boris@bur.io> Signed-off-by: Leo Martins <loemra.dev@gmail.com> Signed-off-by: David Sterba <dsterba@suse.com>	2026-04-07 18:56:00 +02:00
Shawn Lin	d1b7add89c	PCI: trace: Add PCI controller tracepoint feature ... Some PCI controllers may provide debug functionalities to track PCI bus activities like LTSSM state transitions and data rate changes. These will be very useful for debugging PCI link specific issues such as endpoint not getting detected or performance issues. Hence, implement the PCI controller tracepoint feature for recording LTSSM state transitions and data rate changes. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> [mani: commit log and maintainers entry] Signed-off-by: Manivannan Sadhasivam <mani@kernel.org> Tested-by: Anand Moon <linux.amoon@gmail.com> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Link: https://patch.msgid.link/1774403912-210670-2-git-send-email-shawn.lin@rock-chips.com	2026-04-07 20:12:16 +05:30
Thomas Ballasi	77a9c445b6	mm: vmscan: add PIDs to vmscan tracepoints ... The changes aims at adding additionnal tracepoints variables to help debuggers attribute them to specific processes. Link: https://lkml.kernel.org/r/20260316160908.42727-4-tballasi@linux.microsoft.com Signed-off-by: Thomas Ballasi <tballasi@linux.microsoft.com> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: David Hildenbrand <david@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Qi Zheng <zhengqi.arch@bytedance.com> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Cc: Wei Xu <weixugc@google.com> Cc: Yuanchu Xie <yuanchu@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2026-04-05 13:53:04 -07:00
Thomas Ballasi	874a0a566e	mm: vmscan: add cgroup IDs to vmscan tracepoints ... Memory reclaim events are currently difficult to attribute to specific cgroups, making debugging memory pressure issues challenging. This patch adds memory cgroup ID (memcg_id) to key vmscan tracepoints to enable better correlation and analysis. For operations not associated with a specific cgroup, the field is defaulted to 0. Link: https://lkml.kernel.org/r/20260316160908.42727-3-tballasi@linux.microsoft.com Signed-off-by: Thomas Ballasi <tballasi@linux.microsoft.com> Acked-by: Shakeel Butt <shakeel.butt@linux.dev> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: David Hildenbrand <david@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Qi Zheng <zhengqi.arch@bytedance.com> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Cc: Wei Xu <weixugc@google.com> Cc: Yuanchu Xie <yuanchu@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2026-04-05 13:53:04 -07:00
Steven Rostedt	d8d68d8111	tracing: add __event_in_*irq() helpers ... Patch series "mm: vmscan: add PID and cgroup ID to vmscan tracepoints", v8. This patch (of 3): Some trace events want to expose in their output if they were triggered in an interrupt or softirq context. Instead of recording this in the event structure itself, as this information is stored in the flags portion of the event header, add helper macros that can be used in the print format: TP_printk("val=%d %s", __entry->val, __event_in_irq() ? "(in-irq)" : "") This will output "(in-irq)" for the event in the trace data if the event was triggered in hard or soft interrupt context. Link: https://lkml.kernel.org/r/20260316160908.42727-1-tballasi@linux.microsoft.com Link: https://lore.kernel.org/all/20251229132942.31a2b583@gandalf.local.home/ Link: https://lkml.kernel.org/r/20260316160908.42727-2-tballasi@linux.microsoft.com Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Thomas Ballasi <tballasi@linux.microsoft.com> Reviewed-by: Shakeel Butt <shakeel.butt@linux.dev> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: David Hildenbrand <david@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Qi Zheng <zhengqi.arch@bytedance.com> Cc: Wei Xu <weixugc@google.com> Cc: Yuanchu Xie <yuanchu@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2026-04-05 13:53:04 -07:00
Vernon Yang	0562041977	mm: khugepaged: skip lazy-free folios ... For example, create three task: hot1 -> cold -> hot2. After all three task are created, each allocate memory 128MB. the hot1/hot2 task continuously access 128 MB memory, while the cold task only accesses its memory briefly and then call madvise(MADV_FREE). However, khugepaged still prioritizes scanning the cold task and only scans the hot2 task after completing the scan of the cold task. All folios in VM_DROPPABLE are lazyfree, Collapsing maintains that property, so we can just collapse and memory pressure in the future will free it up. In contrast, collapsing in !VM_DROPPABLE does not maintain that property, the collapsed folio will not be lazyfree and memory pressure in the future will not be able to free it up. So if the user has explicitly informed us via MADV_FREE that this memory will be freed, and this vma does not have VM_DROPPABLE flags, it is appropriate for khugepaged to skip it only, thereby avoiding unnecessary scan and collapse operations to reducing CPU wastage. Here are the performance test results: (Throughput bigger is better, other smaller is better) Testing on x86_64 machine: | task hot2 | without patch | with patch | delta | |---------------------|---------------|---------------|---------| | total accesses time | 3.14 sec | 2.93 sec | -6.69% | | cycles per access | 4.96 | 2.21 | -55.44% | | Throughput | 104.38 M/sec | 111.89 M/sec | +7.19% | | dTLB-load-misses | 284814532 | 69597236 | -75.56% | Testing on qemu-system-x86_64 -enable-kvm: | task hot2 | without patch | with patch | delta | |---------------------|---------------|---------------|---------| | total accesses time | 3.35 sec | 2.96 sec | -11.64% | | cycles per access | 7.29 | 2.07 | -71.60% | | Throughput | 97.67 M/sec | 110.77 M/sec | +13.41% | | dTLB-load-misses | 241600871 | 3216108 | -98.67% | [vernon2gm@gmail.com: add comment about VM_DROPPABLE in code, make it clearer] Link: https://lkml.kernel.org/r/i4uowkt4h2ev47obm5h2vtd4zbk6fyw5g364up7kkjn2vmcikq@auepvqethj5r Link: https://lkml.kernel.org/r/20260221093918.1456187-5-vernon2gm@gmail.com Signed-off-by: Vernon Yang <yanglincheng@kylinos.cn> Acked-by: David Hildenbrand (arm) <david@kernel.org> Reviewed-by: Lance Yang <lance.yang@linux.dev> Reviewed-by: Barry Song <baohua@kernel.org> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Dev Jain <dev.jain@arm.com> Cc: Liam Howlett <Liam.Howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Nico Pache <npache@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2026-04-05 13:53:03 -07:00
Vernon Yang	36cec70e4a	mm: khugepaged: add trace_mm_khugepaged_scan event ... Patch series "Improve khugepaged scan logic", v8. This series improves the khugepaged scan logic and reduces CPU consumption by prioritizing scanning tasks that access memory frequently. The following data is traced by bpftrace[1] on a desktop system. After the system has been left idle for 10 minutes upon booting, a lot of SCAN_PMD_MAPPED or SCAN_NO_PTE_TABLE are observed during a full scan by khugepaged. @scan_pmd_status[1]: 1 ## SCAN_SUCCEED @scan_pmd_status[6]: 2 ## SCAN_EXCEED_SHARED_PTE @scan_pmd_status[3]: 142 ## SCAN_PMD_MAPPED @scan_pmd_status[2]: 178 ## SCAN_NO_PTE_TABLE total progress size: 674 MB Total time : 419 seconds ## include khugepaged_scan_sleep_millisecs The khugepaged has below phenomenon: the khugepaged list is scanned in a FIFO manner, as long as the task is not destroyed, 1. the task no longer has memory that can be collapsed into hugepage, continues scan it always. 2. the task at the front of the khugepaged scan list is cold, they are still scanned first. 3. everyone scan at intervals of khugepaged_scan_sleep_millisecs (default 10s). If we always scan the above two cases first, the valid scan will have to wait for a long time. For the first case, when the memory is either SCAN_PMD_MAPPED or SCAN_NO_PTE_TABLE or SCAN_PTE_MAPPED_HUGEPAGE [5], just skip it. For the second case, if the user has explicitly informed us via MADV_FREE that these folios will be freed, just skip it only. The below is some performance test results. kernbench results (testing on x86_64 machine): baseline w/o patches test w/ patches Amean user-32 18522.51 ( 0.00%) 18333.64 * 1.02%* Amean syst-32 1137.96 ( 0.00%) 1113.79 * 2.12%* Amean elsp-32 666.04 ( 0.00%) 659.44 * 0.99%* BAmean-95 user-32 18520.01 ( 0.00%) 18323.57 ( 1.06%) BAmean-95 syst-32 1137.68 ( 0.00%) 1110.50 ( 2.39%) BAmean-95 elsp-32 665.92 ( 0.00%) 659.06 ( 1.03%) BAmean-99 user-32 18520.01 ( 0.00%) 18323.57 ( 1.06%) BAmean-99 syst-32 1137.68 ( 0.00%) 1110.50 ( 2.39%) BAmean-99 elsp-32 665.92 ( 0.00%) 659.06 ( 1.03%) Create three task[2]: hot1 -> cold -> hot2. After all three task are created, each allocate memory 128MB. the hot1/hot2 task continuously access 128 MB memory, while the cold task only accesses its memory briefly andthen call madvise(MADV_FREE). Here are the performance test results: (Throughput bigger is better, other smaller is better) Testing on x86_64 machine: | task hot2 | without patch | with patch | delta | |---------------------|---------------|---------------|---------| | total accesses time | 3.14 sec | 2.93 sec | -6.69% | | cycles per access | 4.96 | 2.21 | -55.44% | | Throughput | 104.38 M/sec | 111.89 M/sec | +7.19% | | dTLB-load-misses | 284814532 | 69597236 | -75.56% | Testing on qemu-system-x86_64 -enable-kvm: | task hot2 | without patch | with patch | delta | |---------------------|---------------|---------------|---------| | total accesses time | 3.35 sec | 2.96 sec | -11.64% | | cycles per access | 7.29 | 2.07 | -71.60% | | Throughput | 97.67 M/sec | 110.77 M/sec | +13.41% | | dTLB-load-misses | 241600871 | 3216108 | -98.67% | This patch (of 4): Add mm_khugepaged_scan event to track the total time for full scan and the total number of pages scanned of khugepaged. Link: https://lkml.kernel.org/r/20260221093918.1456187-2-vernon2gm@gmail.com Signed-off-by: Vernon Yang <yanglincheng@kylinos.cn> Acked-by: David Hildenbrand (Red Hat) <david@kernel.org> Reviewed-by: Barry Song <baohua@kernel.org> Reviewed-by: Lance Yang <lance.yang@linux.dev> Reviewed-by: Dev Jain <dev.jain@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Dev Jain <dev.jain@arm.com> Cc: Liam Howlett <Liam.Howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Nico Pache <npache@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2026-04-05 13:53:03 -07:00
Jakub Kicinski	8ffb33d770	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net ... Cross-merge networking fixes after downstream PR (net-7.0-rc7). Conflicts: net/vmw_vsock/af_vsock.c b18c833888 ("vsock: initialize child_ns_mode_locked in vsock_net_init()") 0de607dc4f ("vsock: add G2H fallback for CIDs not owned by H2G transport") Adjacent changes: drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c ceee35e567 ("bnxt_en: Refactor some basic ring setup and adjustment logic") 57cdfe0dc7 ("bnxt_en: Resize RSS contexts on channel count change") drivers/net/wireless/intel/iwlwifi/mld/mac80211.c 4d56037a02 ("wifi: iwlwifi: mld: block EMLSR during TDLS connections") 687a95d204 ("wifi: iwlwifi: mld: correctly set wifi generation data") drivers/net/wireless/intel/iwlwifi/mld/scan.h b6045c899e ("wifi: iwlwifi: mld: Refactor scan command handling") ec66ec6a5a ("wifi: iwlwifi: mld: Fix MLO scan timing") drivers/net/wireless/intel/iwlwifi/mvm/fw.c 078df640ef ("wifi: iwlwifi: mld: add support for iwl_mcc_allowed_ap_type_cmd v 2") 323156c354 ("wifi: iwlwifi: mvm: don't send a 6E related command when not supported") Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2026-04-02 11:03:13 -07:00
Jiri Pirko	f0548044a0	dma-mapping: introduce DMA_ATTR_CC_SHARED for shared memory ... Current CC designs don't place a vIOMMU in front of untrusted devices. Instead, the DMA API forces all untrusted device DMA through swiotlb bounce buffers (is_swiotlb_force_bounce()) which copies data into shared memory on behalf of the device. When a caller has already arranged for the memory to be shared via set_memory_decrypted(), the DMA API needs to know so it can map directly using the unencrypted physical address rather than bounce buffering. Following the pattern of DMA_ATTR_MMIO, add DMA_ATTR_CC_SHARED for this purpose. Like the MMIO case, only the caller knows what kind of memory it has and must inform the DMA API for it to work correctly. Signed-off-by: Jiri Pirko <jiri@nvidia.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Acked-by: Sumit Semwal <sumit.semwal@linaro.org> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://lore.kernel.org/r/20260325192352.437608-2-jiri@resnulli.us	2026-04-02 07:29:33 +02:00
Gabriele Monaco	820725b0eb	sched: Add deadline tracepoints ... Add the following tracepoints: * sched_dl_throttle(dl_se, cpu, type): Called when a deadline entity is throttled * sched_dl_replenish(dl_se, cpu, type): Called when a deadline entity's runtime is replenished * sched_dl_update(dl_se, cpu, type): Called when a deadline entity updates without throttle or replenish * sched_dl_server_start(dl_se, cpu, type): Called when a deadline server is started * sched_dl_server_stop(dl_se, cpu, type): Called when a deadline server is stopped Those tracepoints can be useful to validate the deadline scheduler with RV and are not exported to tracefs. Reviewed-by: Phil Auld <pauld@redhat.com> Acked-by: Juri Lelli <juri.lelli@redhat.com> Link: https://lore.kernel.org/r/20260330111010.153663-11-gmonaco@redhat.com Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>	2026-03-31 16:47:17 +02:00
Dave Airlie	f6225b546d	Linux 7.0-rc6 ... -----BEGIN PGP SIGNATURE----- iQFSBAABCgA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmnJqkAeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGwGYH/RMBphrIZUnC2zwq mS+lwIve9Tb6LTwlCw+DbR0WROsiLUWCuL6AsMy6mEsWMVtj18uFmWv0vX0RP1o8 GuFNt2oTJ+3tqZgdlUi6//IZddXntiqwyvibocfrHIdLYfNdpTFCW5D7bnVEIkl3 9z7MH8IwZNajri38c+sqqpDhhsKfG6PgAzPea3kibw/XwcLquJv1h6KeCPoFAmKe Tl8Pl96T9ESGUWa5Cu65CwQgaqITLH7BkyceVuUDXJGBJDN3wPhuD1ciPkjSCuJW ou2WyCr30uEfsmFlYrmsHR/aF6SuGYgXFGzL+kmWhOk2nCjAwi8Xxue4tIAYKD/s 0GPb+hg= =At5f -----END PGP SIGNATURE----- BackMerge tag 'v7.0-rc6' into drm-next Linux 7.0-rc6 Requested by a few people on irc to resolve conflicts in other tress. Signed-off-by: Dave Airlie <airlied@redhat.com>	2026-03-31 07:51:02 +10:00
Chuck Lever	6b4f16a532	sunrpc: Add XPT flags missing from SVC_XPRT_FLAG_LIST ... Commit eccbbc7c00 ("nfsd: don't use sv_nrthreads in connection limiting calculations.") and commit 898374fdd7 ("nfsd: unregister with rpcbind when deleting a transport") added new XPT flags but neglected to update the show_svc_xprt_flags() macro. Signed-off-by: Chuck Lever <chuck.lever@oracle.com>	2026-03-29 21:25:09 -04:00
Linus Torvalds	d1384f70b2	vfs-7.0-rc6.fixes ... Please consider pulling these changes from the signed vfs-7.0-rc6.fixes tag. Thanks! Christian -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCacmRjQAKCRCRxhvAZXjc olJnAQD2iiLqih8Y8nX3ESMkkIQWUoSikrfSVw/GqmuKTmlrDgEA/z+LRgDGnI/+ 6xzkEw4UNmJ9JoJsiPSlHq18yyga/ww= =DxTb -----END PGP SIGNATURE----- Merge tag 'vfs-7.0-rc6.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Pull vfs fixes from Christian Brauner: - Fix netfs_limit_iter() hitting BUG() when an ITER_KVEC iterator reaches it via core dump writes to 9P filesystems. Add ITER_KVEC handling following the same pattern as the existing ITER_BVEC code. - Fix a NULL pointer dereference in the netfs unbuffered write retry path when the filesystem (e.g., 9P) doesn't set the prepare_write operation. - Clear I_DIRTY_TIME in sync_lazytime for filesystems implementing ->sync_lazytime. Without this the flag stays set and may cause additional unnecessary calls during inode deactivation. - Increase tmpfs size in mount_setattr selftests. A recent commit bumped the ext4 image size to 2 GB but didn't adjust the tmpfs backing store, so mkfs.ext4 fails with ENOSPC writing metadata. - Fix an invalid folio access in iomap when i_blkbits matches the folio size but differs from the I/O granularity. The cur_folio pointer would not get invalidated and iomap_read_end() would still be called on it despite the IO helper owning it. - Fix hash_name() docstring. - Fix read abandonment during netfs retry where the subreq variable used for abandonment could be uninitialized on the first pass or point to a deleted subrequest on later passes. - Don't block sync for filesystems with no data integrity guarantees. Add a SB_I_NO_DATA_INTEGRITY superblock flag replacing the per-inode AS_NO_DATA_INTEGRITY mapping flag so sync kicks off writeback but doesn't wait for flusher threads. This fixes a suspend-to-RAM hang on fuse-overlayfs where the flusher thread blocks when the fuse daemon is frozen. - Fix a lockdep splat in iomap when reads fail. iomap_read_end_io() invokes fserror_report() which calls igrab() taking i_lock in hardirq context while i_lock is normally held with interrupts enabled. Kick failed read handling to a workqueue. - Remove the redundant netfs_io_stream::front member and use stream->subrequests.next instead, fixing a potential issue in the direct write code path. * tag 'vfs-7.0-rc6.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: netfs: Fix the handling of stream->front by removing it iomap: fix lockdep complaint when reads fail writeback: don't block sync for filesystems with no data integrity guarantees netfs: Fix read abandonment during retry vfs: fix docstring of hash_name() iomap: fix invalid folio access when i_blkbits differs from I/O granularity selftests/mount_setattr: increase tmpfs size for idmapped mount tests fs: clear I_DIRTY_TIME in sync_lazytime netfs: Fix NULL pointer dereference in netfs_unbuffered_write() on retry netfs: Fix kernel BUG in netfs_limit_iter() for ITER_KVEC iterators	2026-03-29 15:24:28 -07:00
Linus Torvalds	b51ad67773	for-7.0-rc5-tag ... -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE8rQSAMVO+zA4DBdWxWXV+ddtWDsFAmnIO1oACgkQxWXV+ddt WDuLDQ//eWEAvqyA7ch+aLNm0QVHqsdH3NdVFjqw/3NsZfC9A3txTpQmmWpfqIUl Yqb3AVIdRqwdytinn3xX17SxkJxzCWExcQ8LckoiJ2ODhLoi/vWGnaK8sUBzUDsm 2etvLGbDmhEEpkTMtIFkbY8fhprqthGCQgRHNrn/cZ+AzwohaboinvACysQJSLlH Nqv0YxnAxsaGIaGD7wigjZ7a2BDoSZ/Q82+RvacrOkyqEThSOqzLmfl++fmHfxQo UDzVOt9RSUnZ5LU4MYjF3H5otLczqKqRuoQC66ulIkvCml07jaKxfUVJyjkQ3dzZ //UiylTXnC6XK/x1ayRrM73dKkXoN9mBmvH4b2FnOQJ3D3oyiCuytEF8s4nCrE+P Zml+OTvIvWMj7Xy2U7cTMWuQGeggZ1m4nxCRScZBEnububUzt13izODwE7C8Cx1y 5FvfFIkiyeBrI03bWUO48H38lwWsfIKj6KnEk1SUeZIARClnZfM4NGZ7MbxjcntG SunXzuQAywOZCkpskUDWMASLSH6CEGG4zgHPmbzw1NSCE5ZCHFZYXG7znv4w3CTW TTeowG9r9cgdVBnMUTIToNWuD0jSMLmUfEPWvcwZF9ptfXdoABsPEQZTrKTLeiq7 TVdunKWzU12ZLr2sl4iku8U4H4aNQFoAwV3XqKnG8VXmzN41+Zw= =I6JH -----END PGP SIGNATURE----- Merge tag 'for-7.0-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux Pull btrfs fixes from David Sterba: "A few more fixes. There's one that stands out in size as it fixes an edge case in fsync. - fix issue on fsync where file with zero size appears as a non-zero after log replay - in zlib compression, handle a crash when data alignment causes folio reference issues - fix possible crash with enabled tracepoints on a overlayfs mount - handle device stats update error - on zoned filesystems, fix kobject leak on sub-block groups - fix super block offset in an error message in validation" * tag 'for-7.0-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: btrfs: fix lost error when running device stats on multiple devices fs btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file() btrfs: zlib: handle page aligned compressed size correctly btrfs: fix leak of kobject name for sub-group space_info btrfs: fix zero size inode with non-zero size after log replay btrfs: fix super block offset in error message in btrfs_validate_super()	2026-03-28 15:23:03 -07:00
Jakub Kicinski	9ebcf66cd6	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net ... Cross-merge networking fixes after downstream PR (net-7.0-rc6). No conflicts, or adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2026-03-26 12:09:57 -07:00
Linus Torvalds	dabb83ecf4	dma-mapping fixes for Linux 7.0 ... A set of fixes for DMA-mapping subsystem, which resolve false-positive warnings from KMSAN and DMA-API debug (Shigeru Yoshida and Leon Romanovsky) as well as a simple build fix (Miguel Ojeda). -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSrngzkoBtlA8uaaJ+Jp1EFxbsSRAUCacP+awAKCRCJp1EFxbsS RB0IAP94SD5YWfKauuYfXw0uxuy0POZR7rNX93y1LMxuorU+9QEAucOy9wIfjxKC Sc6U+fR4cmmIUKKnj7DCiR/EW8cOuQU= =b7th -----END PGP SIGNATURE----- Merge tag 'dma-mapping-7.0-2026-03-25' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux Pull dma-mapping fixes from Marek Szyprowski: "A set of fixes for DMA-mapping subsystem, which resolve false- positive warnings from KMSAN and DMA-API debug (Shigeru Yoshida and Leon Romanovsky) as well as a simple build fix (Miguel Ojeda)" * tag 'dma-mapping-7.0-2026-03-25' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux: dma-mapping: add missing `inline` for `dma_free_attrs` mm/hmm: Indicate that HMM requires DMA coherency RDMA/umem: Tell DMA mapping that UMEM requires coherency iommu/dma: add support for DMA_ATTR_REQUIRE_COHERENT attribute dma-direct: prevent SWIOTLB path when DMA_ATTR_REQUIRE_COHERENT is set dma-mapping: Introduce DMA require coherency attribute dma-mapping: Clarify valid conditions for CPU cache line overlap dma-mapping: handle DMA_ATTR_CPU_CACHE_CLEAN in trace output dma-debug: Allow multiple invocations of overlapping entries dma: swiotlb: add KMSAN annotations to swiotlb_bounce()	2026-03-26 08:22:07 -07:00
David Howells	0e764b9d46	netfs: Fix the handling of stream->front by removing it ... The netfs_io_stream::front member is meant to point to the subrequest currently being collected on a stream, but it isn't actually used this way by direct write (which mostly ignores it). However, there's a tracepoint which looks at it. Further, stream->front is actually redundant with stream->subrequests.next. Fix the potential problem in the direct code by just removing the member and using stream->subrequests.next instead, thereby also simplifying the code. Fixes: a0b4c7a491 ("netfs: Fix unbuffered/DIO writes to dispatch subrequests in strict sequence") Reported-by: Paulo Alcantara <pc@manguebit.org> Signed-off-by: David Howells <dhowells@redhat.com> Link: https://patch.msgid.link/4158599.1774426817@warthog.procyon.org.uk Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org> cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org>	2026-03-26 15:18:45 +01:00
Steven Rostedt	dc1d9408c9	Merge commit 'f35dbac6942171dc4ce9398d1d216a59224590a9' into trace/ring-buffer/core ... The commit f35dbac694 ("ring-buffer: Fix to update per-subbuf entries of persistent ring buffer") was a fix and merged upstream. It is needed for some other work in the ring buffer. The current branch has the remote buffer code that is shared with the Arm64 subsystem and can't be rebased. Merge in the upstream commit to allow continuing of the ring buffer work. Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>	2026-03-24 22:19:21 -04:00
Goldwyn Rodrigues	a85b46db14	btrfs: tracepoints: get correct superblock from dentry in event btrfs_sync_file() ... If overlay is used on top of btrfs, dentry->d_sb translates to overlay's super block and fsid assignment will lead to a crash. Use file_inode(file)->i_sb to always get btrfs_sb. Reviewed-by: Boris Burkov <boris@bur.io> Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>	2026-03-23 20:11:12 +01:00
Breno Leitao	f30186b0c7	coredump: add tracepoint for coredump events ... Coredump is a generally useful and interesting event in the lifetime of a process. Add a tracepoint so it can be monitored through the standard kernel tracing infrastructure. BPF-based crash monitoring is an advanced approach that allows real-time crash interception: by attaching a BPF program at this point, tools can use bpf_get_stack() with BPF_F_USER_STACK to capture the user-space stack trace at the exact moment of the crash, before the process is fully terminated, without waiting for a coredump file to be written and parsed. However, there is currently no stable kernel API for this use case. Existing tools rely on attaching fentry probes to do_coredump(), which is an internal function whose signature changes across kernel versions, breaking these tools. Add a stable tracepoint that fires at the beginning of do_coredump(), providing BPF programs a reliable attachment point. At tracepoint time, the crashing process context is still live, so BPF programs can call bpf_get_stack() with BPF_F_USER_STACK to extract the user-space backtrace. The tracepoint records: - sig: signal number that triggered the coredump - comm: process name Example output: $ echo 1 > /sys/kernel/tracing/events/coredump/coredump/enable $ sleep 999 & $ kill -SEGV $! $ cat /sys/kernel/tracing/trace # TASK-PID CPU# ||||| TIMESTAMP FUNCTION # | | | ||||| | | sleep-634 [036] ..... 145.222206: coredump: sig=11 comm=sleep Suggested-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Breno Leitao <leitao@debian.org> Link: https://patch.msgid.link/20260323-coredump_tracepoint-v2-1-afced083b38d@debian.org Signed-off-by: Christian Brauner <brauner@kernel.org>	2026-03-23 13:15:52 +01:00
Xuewen Yan	a6f22e50c7	tracing: Revert "tracing: Remove pid in task_rename tracing output" ... This reverts commit e3f6a42272. The commit says that the tracepoint only deals with the current task, however the following case is not current task: comm_write() { p = get_proc_task(inode); if (!p) return -ESRCH; if (same_thread_group(current, p)) set_task_comm(p, buffer); } where set_task_comm() calls __set_task_comm() which records the update of p and not current. So revert the patch to show pid. Cc: <mhiramat@kernel.org> Cc: <mathieu.desnoyers@efficios.com> Cc: <elver@google.com> Cc: <kees@kernel.org> Link: https://patch.msgid.link/20260306075954.4533-1-xuewen.yan@unisoc.com Fixes: e3f6a42272 ("tracing: Remove pid in task_rename tracing output") Reported-by: Guohua Yan <guohua.yan@unisoc.com> Signed-off-by: Xuewen Yan <xuewen.yan@unisoc.com> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>	2026-03-21 16:41:18 -04:00
Ingo Molnar	f6472b1793	Linux 7.0-rc4 ... -----BEGIN PGP SIGNATURE----- iQFSBAABCgA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmm3G/UeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGZJUH/R0vQ3Vha48QDEic 1NREwaHxAoTFi0i3y7OPPklqrP2V09D1qg4Q6fExYQVTQgV6F2DRjVbyPKrmr4ay BA6aHrUdnFngYHpDlI1b1r7rJiAIN4WFHl7StO70bS+EB+UPsP9cfP3CKXUfKfqT kyHXzUrd5QnjYmlb9rQw1E6rzsRamNtGUtZf7TwDidJYjtm3sPeDHUkjyRy4xkYd UouIu6W7UXoicl38bJAgaWBY5BiYtjN6ktnY4/gcqDeqYd7mTM3Eb1B+OSXgFfip F0OYfJhfWn+63WnPA+1I5jXWC1UrdVXTMK/NTYjhmGlfdmkLcWDlNGtu+qKZbpwj fmF3Kyo= =6nX1 -----END PGP SIGNATURE----- Merge tag 'v7.0-rc4' into timers/core, to resolve conflict Resolve conflict between this change in the upstream kernel: 4c652a4772 ("rseq: Mark rseq_arm_slice_extension_timer() __always_inline") ... and this pending change in timers/core: 0e98eb1481 ("entry: Prepare for deferred hrtimer rearming") Signed-off-by: Ingo Molnar <mingo@kernel.org>	2026-03-21 08:02:36 +01:00
Leon Romanovsky	e6a58fa255	dma-mapping: Introduce DMA require coherency attribute ... The mapping buffers which carry this attribute require DMA coherent system. This means that they can't take SWIOTLB path, can perform CPU cache overlap and doesn't perform cache flushing. Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://lore.kernel.org/r/20260316-dma-debug-overlap-v3-4-1dde90a7f08b@nvidia.com	2026-03-20 12:05:36 +01:00
Leon Romanovsky	9bb0a4d6a4	dma-mapping: Clarify valid conditions for CPU cache line overlap ... Rename the DMA_ATTR_CPU_CACHE_CLEAN attribute to better reflect that it is debugging aid to inform DMA core code that CPU cache line overlaps are allowed, and refine the documentation describing its use. Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://lore.kernel.org/r/20260316-dma-debug-overlap-v3-3-1dde90a7f08b@nvidia.com	2026-03-20 11:33:24 +01:00
Leon Romanovsky	6f45b1604c	dma-mapping: handle DMA_ATTR_CPU_CACHE_CLEAN in trace output ... Tracing prints decoded DMA attribute flags, but it does not yet include the recently added DMA_ATTR_CPU_CACHE_CLEAN. Add support for decoding and displaying this attribute in the trace output. Fixes: 61868dc55a ("dma-mapping: add DMA_ATTR_CPU_CACHE_CLEAN") Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://lore.kernel.org/r/20260316-dma-debug-overlap-v3-2-1dde90a7f08b@nvidia.com	2026-03-20 11:33:24 +01:00
Jiri Pirko	20b0f383aa	devlink: add devlink_dev_driver_name() helper and use it in trace events ... In preparation to dev-less devlinks, add devlink_dev_driver_name() that returns the driver name stored in devlink struct, and use it in all trace events. Signed-off-by: Jiri Pirko <jiri@nvidia.com> Link: https://patch.msgid.link/20260312100407.551173-9-jiri@resnulli.us Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2026-03-14 13:08:49 -07:00
Jiri Pirko	0f5531879a	devlink: add helpers to get bus_name/dev_name ... Introduce devlink_bus_name() and devlink_dev_name() helpers and convert all direct accesses to devlink->dev->bus->name and dev_name(devlink->dev) to use them. This prepares for dev-less devlink instances where these helpers will be extended to handle the missing device. Signed-off-by: Jiri Pirko <jiri@nvidia.com> Link: https://patch.msgid.link/20260312100407.551173-3-jiri@resnulli.us Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2026-03-14 13:08:47 -07:00
Thomas Weißschuh (Schneider Electric)	bd803783df	hrtimer: Drop unnecessary pointer indirection in hrtimer_expire_entry event ... This pointer indirection is a remnant from when ktime_t was a struct, today it is pointless. Drop the pointer indirection. Signed-off-by: Thomas Weißschuh (Schneider Electric) <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@kernel.org> Link: https://patch.msgid.link/20260311-hrtimer-cleanups-v1-9-095357392669@linutronix.de	2026-03-12 12:15:55 +01:00
Thomas Weißschuh (Schneider Electric)	754e38d2d1	tracing: Use explicit array size instead of sentinel elements in symbol printing ... The sentinel value added by the wrapper macros __print_symbolic() et al prevents the callers from adding their own trailing comma. This makes constructing symbol list dynamically based on kconfig values tedious. Drop the sentinel elements, so callers can either specify the trailing comma or not, just like in regular array initializers. Signed-off-by: Thomas Weißschuh (Schneider Electric) <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@kernel.org> Link: https://patch.msgid.link/20260311-hrtimer-cleanups-v1-2-095357392669@linutronix.de	2026-03-12 12:15:53 +01:00
Simona Vetter	58351f46de	Linux 7.0-rc3 ... -----BEGIN PGP SIGNATURE----- iQFSBAABCgA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmmuDMYeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGLO4IAJ5kpRUi1STiqseb bLawF3gehuZp8VPAYnJsACYXN7kMx9OQJ2SE4Y0Y16ZlHtS1TTvsEAhwSTyYH7Jc hb1iSfoN1kxgDh2U3yZZJz9+DzQh6/YCDXJjyhpSgWOejhaYe7r7er5xqdKpGgVx 6hlvN92/c1m7aqMjKNXeD7YKoXn35FzwPYQAyksJdwMWbq27HE1Vb42PHht21yUX 1ndEUw0UMYH3IrDON+7QtE/aXW1PlLLeQWPDpG9y5FhoseZFEcNkm5NVYshuZ8L4 WZj3Q5IvQ/zj9DuwagW4Gab9XwzKIWSXuuSLRyQzv+OcAyITiC+Uo3z55TFmvXs7 2DOHBkY= =depW -----END PGP SIGNATURE----- Merge v7.0-rc3 into drm-next Requested by Maxime Ripard for drm-misc-next because renesas people need fb797a7010 ("drm: renesas: rz-du: mipi_dsi: Set DSI divider"). Signed-off-by: Simona Vetter <simona.vetter@ffwll.ch>	2026-03-11 11:18:31 +01:00
Vincent Donnefort	5f3efd1dce	tracing: Add helpers to create trace remote events ... Declaring remote events can be cumbersome let's add a set of macros to simplify developers life. The declaration of a remote event is very similar to kernel's events: REMOTE_EVENT(name, id, RE_STRUCT( re_field(u64 foo) ), RE_PRINTK("foo=%llu", __entry->foo) ) Link: https://patch.msgid.link/20260309162516.2623589-12-vdonnefort@google.com Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Vincent Donnefort <vdonnefort@google.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>	2026-03-09 12:33:54 -04:00
Christian Brauner	309a4f8ffd	ext4: fix signed format specifier in ext4_load_inode trace event ... The ext4_load_inode trace event uses %lld (signed) to print the ino field which is u64 (unsigned). Use %llu instead. Signed-off-by: Christian Brauner <brauner@kernel.org>	2026-03-06 14:31:29 +01:00
Jeff Layton	d84c70c6ea	nilfs2: widen trace event i_ino fields to u64 ... In trace events, change __field(unsigned long, ...) to __field(u64, ...) and update TP_PROTO parameters and TP_printk format strings to match the widened field type. Reviewed-by: Viacheslav Dubeyko <slava@dubeyko.com> Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://patch.msgid.link/20260304-iino-u64-v3-11-2257ad83d372@kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org>	2026-03-06 14:31:28 +01:00
Jeff Layton	a232ef7831	f2fs: widen trace event i_ino fields to u64 ... In trace events, change __field(ino_t, ...) to __field(u64, ...) and update TP_printk format strings to %llu/%llx to match the widened field type. Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://patch.msgid.link/20260304-iino-u64-v3-10-2257ad83d372@kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org>	2026-03-06 14:31:28 +01:00
Jeff Layton	d352871478	ext4: widen trace event i_ino fields to u64 ... In trace events, change __field(ino_t, ...) to __field(u64, ...) and update TP_printk format strings to %llu/%llx to match the widened field type. Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://patch.msgid.link/20260304-iino-u64-v3-9-2257ad83d372@kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org>	2026-03-06 14:31:27 +01:00
Jeff Layton	aeb1160315	hugetlbfs: widen trace event i_ino fields to u64 ... Update hugetlbfs trace event definitions to use u64 instead of ino_t/unsigned long for inode number fields. Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://patch.msgid.link/20260304-iino-u64-v3-7-2257ad83d372@kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org>	2026-03-06 14:31:27 +01:00
Jeff Layton	7e35c9d703	cachefiles: widen trace event i_ino fields to u64 ... Update cachefiles trace event definitions to use u64 instead of ino_t/unsigned long for inode number fields. Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://patch.msgid.link/20260304-iino-u64-v3-5-2257ad83d372@kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org>	2026-03-06 14:31:27 +01:00
Jeff Layton	5a3d5928b1	vfs: widen trace event i_ino fields to u64 ... Update VFS-layer trace event definitions to use u64 instead of ino_t/unsigned long for inode number fields. Update TP_printk format strings to use %llu/%llx to match the widened field type. Remove now-unnecessary (unsigned long) casts since __entry->ino is already u64. Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://patch.msgid.link/20260304-iino-u64-v3-4-2257ad83d372@kernel.org Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Christian Brauner <brauner@kernel.org>	2026-03-06 14:31:26 +01:00
Jakub Kicinski	0b1324cdd8	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net ... Cross-merge networking fixes after downstream PR (net-7.0-rc3). No conflicts. Adjacent changes: net/netfilter/nft_set_rbtree.c fb7fb40163 ("netfilter: nf_tables: clone set on flush only") 3aea466a43 ("netfilter: nft_set_rbtree: don't disable bh when acquiring tree lock") Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2026-03-05 12:11:05 -08:00
Linus Torvalds	0b3bb20580	vfs-7.0-rc3.fixes ... Please consider pulling these changes from the signed vfs-7.0-rc3.fixes tag. Thanks! Christian -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCaaikgAAKCRCRxhvAZXjc orflAP9Dfs/DCoHLi9xknIqHgMqxJKHpwVzcGAOX8eI0ZOLVjQEA2nnhtbBvVh3q CAbQzwVHaujKVL2lGV/qwoaRFEvf1gI= =aZoy -----END PGP SIGNATURE----- Merge tag 'vfs-7.0-rc3.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Pull vfs fixes from Christian Brauner: - kthread: consolidate kthread exit paths to prevent use-after-free - iomap: - don't mark folio uptodate if read IO has bytes pending - don't report direct-io retries to fserror - reject delalloc mappings during writeback - ns: tighten visibility checks - netfs: Fix unbuffered/DIO writes to dispatch subrequests in strict sequence * tag 'vfs-7.0-rc3.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: iomap: reject delalloc mappings during writeback iomap: don't mark folio uptodate if read IO has bytes pending selftests: fix mntns iteration selftests nstree: tighten permission checks for listing nsfs: tighten permission checks for handle opening nsfs: tighten permission checks for ns iteration ioctls netfs: Fix unbuffered/DIO writes to dispatch subrequests in strict sequence kthread: consolidate kthread exit paths to prevent use-after-free iomap: don't report direct-io retries to fserror	2026-03-04 15:03:16 -08:00
Dave Airlie	21f6bcdf2b	drm-misc-next for v7.1: ... UAPI Changes: connector: - Add panel_type property fourcc: - Add ARM interleaved 64k modifier nouveau: - Query Z-Cull info with DRM_IOCTL_NOUVEAU_GET_ZCULL_INFO Cross-subsystem Changes: coreboot: - Clean up coreboot framebuffer support dma-buf: - Provide revoke mechanism for shared buffers - Rename move_notify callback to invalidate_mappings and update users. - Always enable move_notify - Support dma_fence_was_initialized() test - Protect dma_fence_ops by RCU and improve locking - Fix sparse warnings Core Changes: atomic: - Allocate drm_private_state via callback and convert drivers atomic-helper: - Use system_percpu_wq buddy: - Make buddy allocator available to all DRM drivers - Document flags and structures colorop: - Add destroy helper and convert drivers fbdev-emulation: - Clean up gem: - Fix drm_gem_objects_lookup() error cleanup Driver Changes: amdgpu: - Set panel_type to OELD for eDP atmel-hlcdc: - Support sana5d65 LCD controller bridge: - anx7625: Support USB-C plus DT bindings - connector: Fix EDID detection - dw-hdmi-qp: Support Vendor-Specfic and SDP Infoframes; improve others - fsl-ldb: Fix visual artifacts plus related DT property 'enable-termination-resistor' - imx8qxp-pixel-link: Improve bridge reference handling - lt9611: Support Port-B-only input plus DT bindings - tda998x: Support DRM_BRIDGE_ATTACH_NO_CONNECTOR; Clean up - Support TH1520 HDMI plus DT bindings - Clean up imagination: - Clean up komeda: - Fix integer overflow in AFBC checks mcde: - Improve bridge handling nouveau: - Provide Z-cull info to user space - gsp: Support GA100 - Shutdown on PCI device shutdown - Clean up panel: - panel-jdi-lt070me05000: Use mipi-dsi multi functions - panel-edp: Support Add AUO B116XAT04.1 (HW: 1A); Support CMN N116BCL-EAK (C2); Support FriendlyELEC plus DT changes - Fix Kconfig dependencies panthor: - Add tracepoints for power and IRQs rcar-du: - dsi: fix VCLK calculation rockchip: - vop2: Use drm_ logging functions - Support DisplayPort on RK3576 sysfb: - corebootdrm: Support system framebuffer on coreboot firmware; detect orientation - Clean up pixel-format lookup sun4i: - Clean up tilcdc: - Use DT bindings scheme - Use managed DRM interfaces - Support DRM_BRIDGE_ATTACH_NO_CONNECTOR - Clean up a lot of obsolete code v3d: - Clean up vc4: - Use system_percpu_wq - Clean up verisilicon: - Support DC8200 plus DT bindings virtgpu: - Support PRIME imports with enabled 3D -----BEGIN PGP SIGNATURE----- iQFPBAABCgA5FiEEchf7rIzpz2NEoWjlaA3BHVMLeiMFAmmgV6IbFIAAAAAABAAO bWFudTIsMi41KzEuMTEsMiwyAAoJEGgNwR1TC3oj3VsH/0xa8RvMN/B882kLA9N2 Dz9MR3sD3gCKiO3kzLTWncMnvI3qpSZCD/mR86+h7sEh5qiFFSiziZCCEF+BFkpB UHK4mawDhMpOQiW+HhTR9V110WVrqtW8jVVg0db9XBE8y7xtj/lV3hv+/1N7WCkg 9fuxPkXby5cnW6aA8lPYzIdILFknwNVrzYCiPFmc4bXM5uynD0ft7KGR0dgViBIh e6IQ+2POz0N0oVOdKGu10wvBQXKOznHpDPRK8844QrLb8CD/W8/mlifeqESDEsM1 TaPFdupXNdt0jdE2Jb+R+kGWfhM9T+CrtgaQ9LBNTDD8/RO2NrQIxDSYvnKw0DzQ jlE= =5H3Q -----END PGP SIGNATURE----- Merge tag 'drm-misc-next-2026-02-26' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next drm-misc-next for v7.1: UAPI Changes: connector: - Add panel_type property fourcc: - Add ARM interleaved 64k modifier nouveau: - Query Z-Cull info with DRM_IOCTL_NOUVEAU_GET_ZCULL_INFO Cross-subsystem Changes: coreboot: - Clean up coreboot framebuffer support dma-buf: - Provide revoke mechanism for shared buffers - Rename move_notify callback to invalidate_mappings and update users. - Always enable move_notify - Support dma_fence_was_initialized() test - Protect dma_fence_ops by RCU and improve locking - Fix sparse warnings Core Changes: atomic: - Allocate drm_private_state via callback and convert drivers atomic-helper: - Use system_percpu_wq buddy: - Make buddy allocator available to all DRM drivers - Document flags and structures colorop: - Add destroy helper and convert drivers fbdev-emulation: - Clean up gem: - Fix drm_gem_objects_lookup() error cleanup Driver Changes: amdgpu: - Set panel_type to OELD for eDP atmel-hlcdc: - Support sana5d65 LCD controller bridge: - anx7625: Support USB-C plus DT bindings - connector: Fix EDID detection - dw-hdmi-qp: Support Vendor-Specfic and SDP Infoframes; improve others - fsl-ldb: Fix visual artifacts plus related DT property 'enable-termination-resistor' - imx8qxp-pixel-link: Improve bridge reference handling - lt9611: Support Port-B-only input plus DT bindings - tda998x: Support DRM_BRIDGE_ATTACH_NO_CONNECTOR; Clean up - Support TH1520 HDMI plus DT bindings - Clean up imagination: - Clean up komeda: - Fix integer overflow in AFBC checks mcde: - Improve bridge handling nouveau: - Provide Z-cull info to user space - gsp: Support GA100 - Shutdown on PCI device shutdown - Clean up panel: - panel-jdi-lt070me05000: Use mipi-dsi multi functions - panel-edp: Support Add AUO B116XAT04.1 (HW: 1A); Support CMN N116BCL-EAK (C2); Support FriendlyELEC plus DT changes - Fix Kconfig dependencies panthor: - Add tracepoints for power and IRQs rcar-du: - dsi: fix VCLK calculation rockchip: - vop2: Use drm_ logging functions - Support DisplayPort on RK3576 sysfb: - corebootdrm: Support system framebuffer on coreboot firmware; detect orientation - Clean up pixel-format lookup sun4i: - Clean up tilcdc: - Use DT bindings scheme - Use managed DRM interfaces - Support DRM_BRIDGE_ATTACH_NO_CONNECTOR - Clean up a lot of obsolete code v3d: - Clean up vc4: - Use system_percpu_wq - Clean up verisilicon: - Support DC8200 plus DT bindings virtgpu: - Support PRIME imports with enabled 3D Signed-off-by: Dave Airlie <airlied@redhat.com> From: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patch.msgid.link/20260226143615.GA47200@linux.fritz.box	2026-03-02 16:58:07 +10:00
Jesper Dangaard Brouer	ff2998f29f	net: sched: introduce qdisc-specific drop reason tracing ... Create new enum qdisc_drop_reason and trace_qdisc_drop tracepoint for qdisc layer drop diagnostics with direct qdisc context visibility. The new tracepoint includes qdisc handle, parent, kind (name), and device information. Existing SKB_DROP_REASON_QDISC_DROP is retained for backwards compatibility via kfree_skb_reason(). Convert qdiscs with drop reasons to use the new infrastructure. Change CAKE's cobalt_should_drop() return type from enum skb_drop_reason to enum qdisc_drop_reason to fix implicit enum conversion warnings. Use QDISC_DROP_UNSPEC as the 'not dropped' sentinel instead of SKB_NOT_DROPPED_YET. Both have the same compiled value (0), so the comparison logic remains semantically equivalent. Signed-off-by: Jesper Dangaard Brouer <hawk@kernel.org> Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://patch.msgid.link/177211345275.3011628.1974310302645218067.stgit@firesoul Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2026-02-28 15:31:34 -08:00
Thomas Gleixner	8e10f6b81a	hrtimer: Add hrtimer_rearm tracepoint ... Analyzing the reprogramming of the clock event device is essential to debug the behaviour of the hrtimer subsystem especially with the upcoming deferred rearming scheme. Signed-off-by: Thomas Gleixner <tglx@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://patch.msgid.link/20260224163430.803669745@kernel.org	2026-02-27 16:40:12 +01:00
Thomas Gleixner	f2e388a019	hrtimer: Reduce trace noise in hrtimer_start() ... hrtimer_start() when invoked with an already armed timer traces like: <comm>-.. [032] d.h2. 5.002263: hrtimer_cancel: hrtimer= .... <comm>-.. [032] d.h1. 5.002263: hrtimer_start: hrtimer= .... Which is incorrect as the timer doesn't get canceled. Just the expiry time changes. The internal dequeue operation which is required for that is not really interesting for trace analysis. But it makes it tedious to keep real cancellations and the above case apart. Remove the cancel tracing in hrtimer_start() and add a 'was_armed' indicator to the hrtimer start tracepoint, which clearly indicates what the state of the hrtimer is when hrtimer_start() is invoked: <comm>-.. [032] d.h1. 6.200103: hrtimer_start: hrtimer= .... was_armed=0 <comm>-.. [032] d.h1. 6.200558: hrtimer_start: hrtimer= .... was_armed=1 Fixes: c6a2a17702 ("hrtimer: Add tracepoint for hrtimers") Signed-off-by: Thomas Gleixner <tglx@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://patch.msgid.link/20260224163430.208491877@kernel.org	2026-02-27 16:40:09 +01:00
David Howells	a0b4c7a491	netfs: Fix unbuffered/DIO writes to dispatch subrequests in strict sequence ... Fix netfslib such that when it's making an unbuffered or DIO write, to make sure that it sends each subrequest strictly sequentially, waiting till the previous one is 'committed' before sending the next so that we don't have pieces landing out of order and potentially leaving a hole if an error occurs (ENOSPC for example). This is done by copying in just those bits of issuing, collecting and retrying subrequests that are necessary to do one subrequest at a time. Retrying, in particular, is simpler because if the current subrequest needs retrying, the source iterator can just be copied again and the subrequest prepped and issued again without needing to be concerned about whether it needs merging with the previous or next in the sequence. Note that the issuing loop waits for a subrequest to complete right after issuing it, but this wait could be moved elsewhere allowing preparatory steps to be performed whilst the subrequest is in progress. In particular, once content encryption is available in netfslib, that could be done whilst waiting, as could cleanup of buffers that have been completed. Fixes: 153a9961b5 ("netfs: Implement unbuffered/DIO write support") Signed-off-by: David Howells <dhowells@redhat.com> Link: https://patch.msgid.link/58526.1772112753@warthog.procyon.org.uk Tested-by: Steve French <sfrench@samba.org> Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.org> cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org>	2026-02-26 14:44:32 +01:00
Kalesh Singh	079c24d569	mm/tracing: rss_stat: ensure curr is false from kthread context ... The rss_stat trace event allows userspace tools, like Perfetto [1], to inspect per-process RSS metric changes over time. The curr field was introduced to rss_stat in commit e4dcad204d ("rss_stat: add support to detect RSS updates of external mm"). Its intent is to indicate whether the RSS update is for the mm_struct of the current execution context; and is set to false when operating on a remote mm_struct (e.g., via kswapd or a direct reclaimer). However, an issue arises when a kernel thread temporarily adopts a user process's mm_struct. Kernel threads do not have their own mm_struct and normally have current->mm set to NULL. To operate on user memory, they can "borrow" a memory context using kthread_use_mm(), which sets current->mm to the user process's mm. This can be observed, for example, in the USB Function Filesystem (FFS) driver. The ffs_user_copy_worker() handles AIO completions and uses kthread_use_mm() to copy data to a user-space buffer. If a page fault occurs during this copy, the fault handler executes in the kthread's context. At this point, current is the kthread, but current->mm points to the user process's mm. Since the rss_stat event (from the page fault) is for that same mm, the condition current->mm == mm becomes true, causing curr to be incorrectly set to true when the trace event is emitted. This is misleading because it suggests the mm belongs to the kthread, confusing userspace tools that track per-process RSS changes and corrupting their mm_id-to-process association. Fix this by ensuring curr is always false when the trace event is emitted from a kthread context by checking for the PF_KTHREAD flag. Link: https://lkml.kernel.org/r/20260219233708.1971199-1-kaleshsingh@google.com Link: https://perfetto.dev/ [1] Fixes: e4dcad204d ("rss_stat: add support to detect RSS updates of external mm") Signed-off-by: Kalesh Singh <kaleshsingh@google.com> Acked-by: Zi Yan <ziy@nvidia.com> Acked-by: SeongJae Park <sj@kernel.org> Reviewed-by: Pedro Falcato <pfalcato@suse.de> Cc: "David Hildenbrand (Arm)" <david@kernel.org> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: <stable@vger.kernel.org> [5.10+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2026-02-24 11:13:27 -08:00
Maxime Ripard	8b85987d3c	Merge drm/drm-next into drm-misc-next ... Let's merge 7.0-rc1 to start the new drm-misc-next window Signed-off-by: Maxime Ripard <mripard@kernel.org>	2026-02-23 11:48:20 +01:00
Linus Torvalds	45a43ac5ac	vfs-7.0-rc1.misc.2 ... Please consider pulling these changes from the signed vfs-7.0-rc1.misc.2 tag. Thanks! Christian -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCaZMOCwAKCRCRxhvAZXjc oswrAP9r1zjzMimjX2J0hBoMnYjNzQfLLew8+IRygImQ+yaqWgD9Fiw/cQ9eE1Hm TMLqck/ky588ywSDaBzfztrXAY3ISgg= =4yr2 -----END PGP SIGNATURE----- Merge tag 'vfs-7.0-rc1.misc.2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Pull more misc vfs updates from Christian Brauner: "Features: - Optimize close_range() from O(range size) to O(active FDs) by using find_next_bit() on the open_fds bitmap instead of linearly scanning the entire requested range. This is a significant improvement for large-range close operations on sparse file descriptor tables. - Add FS_XFLAG_VERITY file attribute for fs-verity files, retrievable via FS_IOC_FSGETXATTR and file_getattr(). The flag is read-only. Add tracepoints for fs-verity enable and verify operations, replacing the previously removed debug printk's. - Prevent nfsd from exporting special kernel filesystems like pidfs and nsfs. These filesystems have custom ->open() and ->permission() export methods that are designed for open_by_handle_at(2) only and are incompatible with nfsd. Update the exportfs documentation accordingly. Fixes: - Fix KMSAN uninit-value in ovl_fill_real() where strcmp() was used on a non-null-terminated decrypted directory entry name from fscrypt. This triggered on encrypted lower layers when the decrypted name buffer contained uninitialized tail data. The fix also adds VFS-level name_is_dot(), name_is_dotdot(), and name_is_dot_dotdot() helpers, replacing various open-coded "." and ".." checks across the tree. - Fix read-only fsflags not being reset together with xflags in vfs_fileattr_set(). Currently harmless since no read-only xflags overlap with flags, but this would cause inconsistencies for any future shared read-only flag - Return -EREMOTE instead of -ESRCH from PIDFD_GET_INFO when the target process is in a different pid namespace. This lets userspace distinguish "process exited" from "process in another namespace", matching glibc's pidfd_getpid() behavior Cleanups: - Use C-string literals in the Rust seq_file bindings, replacing the kernel::c_str!() macro (available since Rust 1.77) - Fix typo in d_walk_ret enum comment, add porting notes for the readlink_copy() calling convention change" * tag 'vfs-7.0-rc1.misc.2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: fs: add porting notes about readlink_copy() pidfs: return -EREMOTE when PIDFD_GET_INFO is called on another ns nfsd: do not allow exporting of special kernel filesystems exportfs: clarify the documentation of open()/permission() expotrfs ops fsverity: add tracepoints fs: add FS_XFLAG_VERITY for fs-verity files rust: seq_file: replace `kernel::c_str!` with C-Strings fs: dcache: fix typo in enum d_walk_ret comment ovl: use name_is_dot* helpers in readdir code fs: add helpers name_is_dot{,dot,_dotdot} ovl: Fix uninit-value in ovl_fill_real fs: reset read-only fsflags together with xflags fs/file: optimize close_range() complexity from O(N) to O(Sparse)	2026-02-16 13:00:36 -08:00
Linus Torvalds	3e48a11675	f2fs-for-7.0-rc1 ... In this development cycle, we focused on several key performance optimizations: 1) introducing large folio support to enhance read speeds for immutable files, 2) reducing checkpoint=enable latency by flushing only committed dirty pages, and 3) implementing tracepoints to diagnose and resolve lock priority inversion. Additionally, we introduced the packed_ssa feature to optimize the SSA footprint when utilizing large block sizes. Enhancement: - support large folio for immutable non-compressed case - support non-4KB block size without packed_ssa feature - optimize f2fs_enable_checkpoint() to avoid long delay - optimize f2fs_overwrite_io() for f2fs_iomap_begin - optimize NAT block loading during checkpoint write - add write latency stats for NAT and SIT blocks in f2fs_write_checkpoint - pin files do not require sbi->writepages lock for ordering - avoid f2fs_map_blocks() for consecutive holes in readpages - flush plug periodically during GC to maximize readahead effect - add tracepoints to catch lock overheads - add several sysfs entries to tune internal lock priorities Bug fix: - fix lock priority inversion issue - fix incomplete block usage in compact SSA summaries - fix to show simulate_lock_timeout correctly - fix to avoid mapping wrong physical block for swapfile - fix IS_CHECKPOINTED flag inconsistency issue caused by concurrent atomic commit and checkpoint writes - fix to avoid UAF in f2fs_write_end_io() -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE00UqedjCtOrGVvQiQBSofoJIUNIFAmmP3mYACgkQQBSofoJI UNIvMA//c0vFSIB2Gsfjt5rk2kxDSeuxQHDetKNPR/xzz/tRJHw6F0y+3oFPbQDa bI62/DbhHPiCienq07l1LZQd44pYgheQEYmYtf6A2wGduh+S1Cy1uYZRmKJwtcfv t8gZoFIle4rufz5GlWoY6L70jhSJmpLPYLItltL7mxgJL1cR7Ea3L+fOAmSp9YYT mo0zT3jTaYSbCqad9Cgoa6GU/HwrvimiGPRFBVsxkZItRSIY22CTA0DmnXkG2iys GgcNKR1qMcy44rrt4oLXrlffmqLQXtLn4F62K79or0PMby34pGEZldxr+sWDxr0p /1lFwwnnAFZiJ/z9TLjND5z3KmZtF0ng98QWqj0uoTYLyCAzgqDkvrStBz6pJjjb oA/0XOWPLAxIMbB3xipeICJTzFauR6Pg69e0A0oDvB2CfkHuSuUbhU47HPWNfi2n ASL1jcFVtF6mZr7iV23W2vFWqWz6ZKDi2ZTphaRu9UXrMkyB3OYxNDumbJCwbd8c pb6xf8UoXG2MDHwJPKRbSuznPTCbM2ZohoTgDmED8YcTdxc+CE3FVDGNdObZWU8w guA1HJQxScXPPPUHcTybXN4qOjO/ppJBRkoq2tBzd4iLr4V+gQNTTOmtK+wfuLsM LSK0mQiGj1VPJD950NXwervibgaxnv85iLLgVYccc4N+E8aoLbQ= =Ugvd -----END PGP SIGNATURE----- Merge tag 'f2fs-for-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs Pull f2fs updates from Jaegeuk Kim: "In this development cycle, we focused on several key performance optimizations: - introducing large folio support to enhance read speeds for immutable files - reducing checkpoint=enable latency by flushing only committed dirty pages - implementing tracepoints to diagnose and resolve lock priority inversion. Additionally, we introduced the packed_ssa feature to optimize the SSA footprint when utilizing large block sizes. Detail summary: Enhancements: - support large folio for immutable non-compressed case - support non-4KB block size without packed_ssa feature - optimize f2fs_enable_checkpoint() to avoid long delay - optimize f2fs_overwrite_io() for f2fs_iomap_begin - optimize NAT block loading during checkpoint write - add write latency stats for NAT and SIT blocks in f2fs_write_checkpoint - pin files do not require sbi->writepages lock for ordering - avoid f2fs_map_blocks() for consecutive holes in readpages - flush plug periodically during GC to maximize readahead effect - add tracepoints to catch lock overheads - add several sysfs entries to tune internal lock priorities Fixes: - fix lock priority inversion issue - fix incomplete block usage in compact SSA summaries - fix to show simulate_lock_timeout correctly - fix to avoid mapping wrong physical block for swapfile - fix IS_CHECKPOINTED flag inconsistency issue caused by concurrent atomic commit and checkpoint writes - fix to avoid UAF in f2fs_write_end_io()" * tag 'f2fs-for-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (61 commits) f2fs: sysfs: introduce critical_task_priority f2fs: introduce trace_f2fs_priority_update f2fs: fix lock priority inversion issue f2fs: optimize f2fs_overwrite_io() for f2fs_iomap_begin f2fs: fix incomplete block usage in compact SSA summaries f2fs: decrease maximum flush retry count in f2fs_enable_checkpoint() f2fs: optimize NAT block loading during checkpoint write f2fs: change size parameter of __has_cursum_space() to unsigned int f2fs: add write latency stats for NAT and SIT blocks in f2fs_write_checkpoint f2fs: pin files do not require sbi->writepages lock for ordering f2fs: fix to show simulate_lock_timeout correctly f2fs: introduce FAULT_SKIP_WRITE f2fs: check skipped write in f2fs_enable_checkpoint() Revert "f2fs: add timeout in f2fs_enable_checkpoint()" f2fs: fix to unlock folio in f2fs_read_data_large_folio() f2fs: fix error path handling in f2fs_read_data_large_folio() f2fs: use folio_end_read f2fs: fix to avoid mapping wrong physical block for swapfile f2fs: avoid f2fs_map_blocks() for consecutive holes in readpages f2fs: advance index and offset after zeroing in large folio read ...	2026-02-14 09:48:10 -08:00
Linus Torvalds	3c6e577d5a	tracing updates for 7.0: ... User visible changes: - Add an entry into MAINTAINERS file for RUST versions of code There's now RUST code for tracing and static branches. To differentiate that code from the C code, add entries in for the RUST version (with "[RUST]" around it) so that the right maintainers get notified on changes. - New bitmask-list option added to tracefs When this is set, bitmasks in trace event are not displayed as hex numbers, but instead as lists: e.g. 0-5,7,9 instead of 0000015f - New show_event_filters file in tracefs Instead of having to search all events/*/*/filter for any active filters enabled in the trace instance, the file show_event_filters will list them so that there's only one file that needs to be examined to see if any filters are active. - New show_event_triggers file in tracefs Instead of having to search all events/*/*/trigger for any active triggers enabled in the trace instance, the file show_event_triggers will list them so that there's only one file that needs to be examined to see if any triggers are active. - Have traceoff_on_warning disable trace pintk buffer too Recently recording of trace_printk() could go to other trace instances instead of the top level instance. But if traceoff_on_warning triggers, it doesn't stop the buffer with trace_printk() and that data can easily be lost by being overwritten. Have traceoff_on_warning also disable the instance that has trace_printk() being written to it. - Update the hist_debug file to show what function the field uses When CONFIG_HIST_TRIGGERS_DEBUG is enabled, a hist_debug file exists for every event. This displays the internal data of any histogram enabled for that event. But it is lacking the function that is called to process one of its fields. This is very useful information that was missing when debugging histograms. - Up the histogram stack size from 16 to 31 Stack traces can be used as keys for event histograms. Currently the size of the stack that is stored is limited to just 16 entries. But the storage space in the histogram is 256 bytes, meaning that it can store up to 31 entries (plus one for the count of entries). Instead of letting that space go to waste, up the limit from 16 to 31. This makes the keys much more useful. - Fix permissions of per CPU file buffer_size_kb The per CPU file of buffer_size_kb was incorrectly set to read only in a previous cleanup. It should be writable. - Reset "last_boot_info" if the persistent buffer is cleared The last_boot_info shows address information of a persistent ring buffer if it contains data from a previous boot. It is cleared when recording starts again, but it is not cleared when the buffer is reset. The data is useless after a reset so clear it on reset too. Internal changes: - A change was made to allow tracepoint callbacks to have preemption enabled, and instead be protected by SRCU. This required some updates to the callbacks for perf and BPF. perf needed to disable preemption directly in its callback because it expects preemption disabled in the later code. BPF needed to disable migration, as its code expects to run completely on the same CPU. - Have irq_work wake up other CPU if current CPU is "isolated" When there's a waiter waiting on ring buffer data and a new event happens, an irq work is triggered to wake up that waiter. This is noisy on isolated CPUs (running NO_HZ_FULL). Trigger an IPI to a house keeping CPU instead. - Use proper free of trigger_data instead of open coding it in. - Remove redundant call of event_trigger_reset_filter() It was called immediately in a function that was called right after it. - Workqueue cleanups - Report errors if tracing_update_buffers() were to fail. - Make the enum update workqueue generic for other parts of tracing On boot up, a work queue is created to convert enum names into their numbers in the trace event format files. This work queue can also be used for other aspects of tracing that takes some time and shouldn't be called by the init call code. The blk_trace initialization takes a bit of time. Have the initialization code moved to the new tracing generic work queue function. - Skip kprobe boot event creation call if there's no kprobes defined on cmdline The kprobe initialization to set up kprobes if they are defined on the cmdline requires taking the event_mutex lock. This can be held by other tracing code doing initialization for a long time. Since kprobes added to the kernel command line need to be setup immediately, as they may be tracing early initialization code, they cannot be postponed in a work queue and must be setup in the initcall code. If there's no kprobe on the kernel cmdline, there's no reason to take the mutex and slow down the boot up code waiting to get the lock only to find out there's nothing to do. Simply exit out early if there's no kprobes on the kernel cmdline. If there are kprobes on the cmdline, then someone cares more about tracing over the speed of boot up. - Clean up the trigger code a bit - Move code out of trace.c and into their own files trace.c is now over 11,000 lines of code and has become more difficult to maintain. Start splitting it up so that related code is in their own files. Move all the trace_printk() related code into trace_printk.c. Move the __always_inline stack functions into trace.h. Move the pid filtering code into a new trace_pid.c file. - Better define the max latency and snapshot code The latency tracers have a "max latency" buffer that is a copy of the main buffer and gets swapped with it when a new high latency is detected. This keeps the trace up to the highest latency around where this max_latency buffer is never written to. It is only used to save the last max latency trace. A while ago a snapshot feature was added to tracefs to allow user space to perform the same logic. It could also enable events to trigger a "snapshot" if one of their fields hit a new high. This was built on top of the latency max_latency buffer logic. Because snapshots came later, they were dependent on the latency tracers to be enabled. In reality, the latency tracers depend on the snapshot code and not the other way around. It was just that they came first. Restructure the code and the kconfigs to have the latency tracers depend on snapshot code instead. This actually simplifies the logic a bit and allows to disable more when the latency tracers are not defined and the snapshot code is. - Fix a "false sharing" in the hwlat tracer code The loop to search for latency in hardware was using a variable that could be changed by user space for each sample. If the user change this variable, it could cause a bus contention, and reading that variable can show up as a large latency in the trace causing a false positive. Read this variable at the start of the sample with a READ_ONCE() into a local variable and keep the code from sharing cache lines with readers. - Fix function graph tracer static branch optimization code When only one tracer is defined for function graph tracing, it uses a static branch to call that tracer directly. When another tracer is added, it goes into loop logic to call all the registered callbacks. The code was incorrect when going back to one tracer and never re-enabled the static branch again to do the optimization code. - And other small fixes and cleanups. -----BEGIN PGP SIGNATURE----- iIoEABYKADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCaY9P3BQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qou3AQCCrzdrIglLNABGPyny9sqWLDz6vyyw nWAK9xg1VFxwRQD+LyJvVMWbpGeRBS/PsAK19RgldbgkQFWNv8gNhRKRgw0= =U/kg -----END PGP SIGNATURE----- Merge tag 'trace-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracing updates from Steven Rostedt: "User visible changes: - Add an entry into MAINTAINERS file for RUST versions of code There's now RUST code for tracing and static branches. To differentiate that code from the C code, add entries in for the RUST version (with "[RUST]" around it) so that the right maintainers get notified on changes. - New bitmask-list option added to tracefs When this is set, bitmasks in trace event are not displayed as hex numbers, but instead as lists: e.g. 0-5,7,9 instead of 0000015f - New show_event_filters file in tracefs Instead of having to search all events/*/*/filter for any active filters enabled in the trace instance, the file show_event_filters will list them so that there's only one file that needs to be examined to see if any filters are active. - New show_event_triggers file in tracefs Instead of having to search all events/*/*/trigger for any active triggers enabled in the trace instance, the file show_event_triggers will list them so that there's only one file that needs to be examined to see if any triggers are active. - Have traceoff_on_warning disable trace pintk buffer too Recently recording of trace_printk() could go to other trace instances instead of the top level instance. But if traceoff_on_warning triggers, it doesn't stop the buffer with trace_printk() and that data can easily be lost by being overwritten. Have traceoff_on_warning also disable the instance that has trace_printk() being written to it. - Update the hist_debug file to show what function the field uses When CONFIG_HIST_TRIGGERS_DEBUG is enabled, a hist_debug file exists for every event. This displays the internal data of any histogram enabled for that event. But it is lacking the function that is called to process one of its fields. This is very useful information that was missing when debugging histograms. - Up the histogram stack size from 16 to 31 Stack traces can be used as keys for event histograms. Currently the size of the stack that is stored is limited to just 16 entries. But the storage space in the histogram is 256 bytes, meaning that it can store up to 31 entries (plus one for the count of entries). Instead of letting that space go to waste, up the limit from 16 to 31. This makes the keys much more useful. - Fix permissions of per CPU file buffer_size_kb The per CPU file of buffer_size_kb was incorrectly set to read only in a previous cleanup. It should be writable. - Reset "last_boot_info" if the persistent buffer is cleared The last_boot_info shows address information of a persistent ring buffer if it contains data from a previous boot. It is cleared when recording starts again, but it is not cleared when the buffer is reset. The data is useless after a reset so clear it on reset too. Internal changes: - A change was made to allow tracepoint callbacks to have preemption enabled, and instead be protected by SRCU. This required some updates to the callbacks for perf and BPF. perf needed to disable preemption directly in its callback because it expects preemption disabled in the later code. BPF needed to disable migration, as its code expects to run completely on the same CPU. - Have irq_work wake up other CPU if current CPU is "isolated" When there's a waiter waiting on ring buffer data and a new event happens, an irq work is triggered to wake up that waiter. This is noisy on isolated CPUs (running NO_HZ_FULL). Trigger an IPI to a house keeping CPU instead. - Use proper free of trigger_data instead of open coding it in. - Remove redundant call of event_trigger_reset_filter() It was called immediately in a function that was called right after it. - Workqueue cleanups - Report errors if tracing_update_buffers() were to fail. - Make the enum update workqueue generic for other parts of tracing On boot up, a work queue is created to convert enum names into their numbers in the trace event format files. This work queue can also be used for other aspects of tracing that takes some time and shouldn't be called by the init call code. The blk_trace initialization takes a bit of time. Have the initialization code moved to the new tracing generic work queue function. - Skip kprobe boot event creation call if there's no kprobes defined on cmdline The kprobe initialization to set up kprobes if they are defined on the cmdline requires taking the event_mutex lock. This can be held by other tracing code doing initialization for a long time. Since kprobes added to the kernel command line need to be setup immediately, as they may be tracing early initialization code, they cannot be postponed in a work queue and must be setup in the initcall code. If there's no kprobe on the kernel cmdline, there's no reason to take the mutex and slow down the boot up code waiting to get the lock only to find out there's nothing to do. Simply exit out early if there's no kprobes on the kernel cmdline. If there are kprobes on the cmdline, then someone cares more about tracing over the speed of boot up. - Clean up the trigger code a bit - Move code out of trace.c and into their own files trace.c is now over 11,000 lines of code and has become more difficult to maintain. Start splitting it up so that related code is in their own files. Move all the trace_printk() related code into trace_printk.c. Move the __always_inline stack functions into trace.h. Move the pid filtering code into a new trace_pid.c file. - Better define the max latency and snapshot code The latency tracers have a "max latency" buffer that is a copy of the main buffer and gets swapped with it when a new high latency is detected. This keeps the trace up to the highest latency around where this max_latency buffer is never written to. It is only used to save the last max latency trace. A while ago a snapshot feature was added to tracefs to allow user space to perform the same logic. It could also enable events to trigger a "snapshot" if one of their fields hit a new high. This was built on top of the latency max_latency buffer logic. Because snapshots came later, they were dependent on the latency tracers to be enabled. In reality, the latency tracers depend on the snapshot code and not the other way around. It was just that they came first. Restructure the code and the kconfigs to have the latency tracers depend on snapshot code instead. This actually simplifies the logic a bit and allows to disable more when the latency tracers are not defined and the snapshot code is. - Fix a "false sharing" in the hwlat tracer code The loop to search for latency in hardware was using a variable that could be changed by user space for each sample. If the user change this variable, it could cause a bus contention, and reading that variable can show up as a large latency in the trace causing a false positive. Read this variable at the start of the sample with a READ_ONCE() into a local variable and keep the code from sharing cache lines with readers. - Fix function graph tracer static branch optimization code When only one tracer is defined for function graph tracing, it uses a static branch to call that tracer directly. When another tracer is added, it goes into loop logic to call all the registered callbacks. The code was incorrect when going back to one tracer and never re-enabled the static branch again to do the optimization code. - And other small fixes and cleanups" * tag 'trace-v7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (46 commits) function_graph: Restore direct mode when callbacks drop to one tracing: Fix indentation of return statement in print_trace_fmt() tracing: Reset last_boot_info if ring buffer is reset tracing: Fix to set write permission to per-cpu buffer_size_kb tracing: Fix false sharing in hwlat get_sample() tracing: Move d_max_latency out of CONFIG_FSNOTIFY protection tracing: Better separate SNAPSHOT and MAX_TRACE options tracing: Add tracer_uses_snapshot() helper to remove #ifdefs tracing: Rename trace_array field max_buffer to snapshot_buffer tracing: Move pid filtering into trace_pid.c tracing: Move trace_printk functions out of trace.c and into trace_printk.c tracing: Use system_state in trace_printk_init_buffers() tracing: Have trace_printk functions use flags instead of using global_trace tracing: Make tracing_update_buffers() take NULL for global_trace tracing: Make printk_trace global for tracing system tracing: Move ftrace_trace_stack() out of trace.c and into trace.h tracing: Move __trace_buffer_{un}lock_*() functions to trace.h tracing: Make tracing_selftest_running global to the tracing subsystem tracing: Make tracing_disabled global for tracing system tracing: Clean up use of trace_create_maxlat_file() ...	2026-02-13 19:25:16 -08:00
Linus Torvalds	4cff5c05e0	mm.git review status for linus..mm-stable ... Everything: Total patches: 325 Reviews/patch: 1.39 Reviewed rate: 72% Excluding DAMON: Total patches: 262 Reviews/patch: 1.63 Reviewed rate: 82% Excluding DAMON and zram: Total patches: 248 Reviews/patch: 1.72 Reviewed rate: 86% - The 14 patch series "powerpc/64s: do not re-activate batched TLB flush" from Alexander Gordeev makes arch_{enter|leave}_lazy_mmu_mode() nest properly. It adds a generic enter/leave layer and switches architectures to use it. Various hacks were removed in the process. - The 7 patch series "zram: introduce compressed data writeback" from Richard Chang and Sergey Senozhatsky implements data compression for zram writeback. - The 8 patch series "mm: folio_zero_user: clear page ranges" from David Hildenbrand adds clearing of contiguous page ranges for hugepages. Large improvements during demand faulting are demonstrated. - The 2 patch series "memcg cleanups" from Chen Ridong tideis up some memcg code. - The 12 patch series "mm/damon: introduce {,max_}nr_snapshots and tracepoint for damos stats" from SeongJae Park improves DAMOS stat's provided information, deterministic control, and readability. - The 3 patch series "selftests/mm: hugetlb cgroup charging: robustness fixes" from Li Wang fixes a few issues in the hugetlb cgroup charging selftests. - The 5 patch series "Fix va_high_addr_switch.sh test failure - again" from Chunyu Hu addresses several issues in the va_high_addr_switch test. - The 5 patch series "mm/damon/tests/core-kunit: extend existing test scenarios" from Shu Anzai improves the KUnit test coverage for DAMON. - The 2 patch series "mm/khugepaged: fix dirty page handling for MADV_COLLAPSE" from Shivank Garg fixes a glitch in khugepaged which was causing madvise(MADV_COLLAPSE) to transiently return -EAGAIN. - The 29 patch series "arch, mm: consolidate hugetlb early reservation" from Mike Rapoport reworks and consolidates a pile of straggly code related to reservation of hugetlb memory from bootmem and creation of CMA areas for hugetlb. - The 9 patch series "mm: clean up anon_vma implementation" from Lorenzo Stoakes cleans up the anon_vma implementation in various ways. - The 3 patch series "tweaks for __alloc_pages_slowpath()" from Vlastimil Babka does a little streamlining of the page allocator's slowpath code. - The 8 patch series "memcg: separate private and public ID namespaces" from Shakeel Butt cleans up the memcg ID code and prevents the internal-only private IDs from being exposed to userspace. - The 6 patch series "mm: hugetlb: allocate frozen gigantic folio" from Kefeng Wang cleans up the allocation of frozen folios and avoids some atomic refcount operations. - The 11 patch series "mm/damon: advance DAMOS-based LRU sorting" from SeongJae Park improves DAMOS's movement of memory betewwn the active and inactive LRUs and adds auto-tuning of the ratio-based quotas and of monitoring intervals. - The 18 patch series "Support page table check on PowerPC" from Andrew Donnellan makes CONFIG_PAGE_TABLE_CHECK_ENFORCED work on powerpc. - The 3 patch series "nodemask: align nodes_and{,not} with underlying bitmap ops" from Yury Norov makes nodes_and() and nodes_andnot() propagate the return values from the underlying bit operations, enabling some cleanup in calling code. - The 5 patch series "mm/damon: hide kdamond and kdamond_lock from API callers" from SeongJae Park cleans up some DAMON internal interfaces. - The 4 patch series "mm/khugepaged: cleanups and scan limit fix" from Shivank Garg does some cleanup work in khupaged and fixes a scan limit accounting issue. - The 24 patch series "mm: balloon infrastructure cleanups" from David Hildenbrand goes to town on the balloon infrastructure and its page migration function. Mainly cleanups, also some locking simplification. - The 2 patch series "mm/vmscan: add tracepoint and reason for kswapd_failures reset" from Jiayuan Chen adds additional tracepoints to the page reclaim code. - The 3 patch series "Replace wq users and add WQ_PERCPU to alloc_workqueue() users" from Marco Crivellari is part of Marco's kernel-wide migration from the legacy workqueue APIs over to the preferred unbound workqueues. - The 9 patch series "Various mm kselftests improvements/fixes" from Kevin Brodsky provides various unrelated improvements/fixes for the mm kselftests. - The 5 patch series "mm: accelerate gigantic folio allocation" from Kefeng Wang greatly speeds up gigantic folio allocation, mainly by avoiding unnecessary work in pfn_range_valid_contig(). - The 5 patch series "selftests/damon: improve leak detection and wss estimation reliability" from SeongJae Park improves the reliability of two of the DAMON selftests. - The 8 patch series "mm/damon: cleanup kdamond, damon_call(), damos filter and DAMON_MIN_REGION" from SeongJae Park does some cleanup work in the core DAMON code. - The 8 patch series "Docs/mm/damon: update intro, modules, maintainer profile, and misc" from SeongJae Park performs maintenance work on the DAMON documentation. - The 10 patch series "mm: add and use vma_assert_stabilised() helper" from Lorenzo Stoakes refactors and cleans up the core VMA code. The main aim here is to be able to use the mmap write lock's lockdep state to perform various assertions regarding the locking which the VMA code requires. - The 19 patch series "mm, swap: swap table phase II: unify swapin use" from Kairui Song removes some old swap code (swap cache bypassing and swap synchronization) which wasn't working very well. Various other cleanups and simplifications were made. The end result is a 20% speedup in one benchmark. - The 8 patch series "enable PT_RECLAIM on more 64-bit architectures" from Qi Zheng makes PT_RECLAIM available on 64-bit alpha, loongarch, mips, parisc, um, Various cleanups were performed along the way. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaY1HfAAKCRDdBJ7gKXxA jqhZAP9H8ZlKKqCEgnr6U5XXmJ63Ep2FDQpl8p35yr9yVuU9+gEAgfyWiJ43l1fP rT0yjsUW3KQFBi/SEA3R6aYarmoIBgI= =+HLt -----END PGP SIGNATURE----- Merge tag 'mm-stable-2026-02-11-19-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - "powerpc/64s: do not re-activate batched TLB flush" makes arch_{enter|leave}_lazy_mmu_mode() nest properly (Alexander Gordeev) It adds a generic enter/leave layer and switches architectures to use it. Various hacks were removed in the process. - "zram: introduce compressed data writeback" implements data compression for zram writeback (Richard Chang and Sergey Senozhatsky) - "mm: folio_zero_user: clear page ranges" adds clearing of contiguous page ranges for hugepages. Large improvements during demand faulting are demonstrated (David Hildenbrand) - "memcg cleanups" tidies up some memcg code (Chen Ridong) - "mm/damon: introduce {,max_}nr_snapshots and tracepoint for damos stats" improves DAMOS stat's provided information, deterministic control, and readability (SeongJae Park) - "selftests/mm: hugetlb cgroup charging: robustness fixes" fixes a few issues in the hugetlb cgroup charging selftests (Li Wang) - "Fix va_high_addr_switch.sh test failure - again" addresses several issues in the va_high_addr_switch test (Chunyu Hu) - "mm/damon/tests/core-kunit: extend existing test scenarios" improves the KUnit test coverage for DAMON (Shu Anzai) - "mm/khugepaged: fix dirty page handling for MADV_COLLAPSE" fixes a glitch in khugepaged which was causing madvise(MADV_COLLAPSE) to transiently return -EAGAIN (Shivank Garg) - "arch, mm: consolidate hugetlb early reservation" reworks and consolidates a pile of straggly code related to reservation of hugetlb memory from bootmem and creation of CMA areas for hugetlb (Mike Rapoport) - "mm: clean up anon_vma implementation" cleans up the anon_vma implementation in various ways (Lorenzo Stoakes) - "tweaks for __alloc_pages_slowpath()" does a little streamlining of the page allocator's slowpath code (Vlastimil Babka) - "memcg: separate private and public ID namespaces" cleans up the memcg ID code and prevents the internal-only private IDs from being exposed to userspace (Shakeel Butt) - "mm: hugetlb: allocate frozen gigantic folio" cleans up the allocation of frozen folios and avoids some atomic refcount operations (Kefeng Wang) - "mm/damon: advance DAMOS-based LRU sorting" improves DAMOS's movement of memory betewwn the active and inactive LRUs and adds auto-tuning of the ratio-based quotas and of monitoring intervals (SeongJae Park) - "Support page table check on PowerPC" makes CONFIG_PAGE_TABLE_CHECK_ENFORCED work on powerpc (Andrew Donnellan) - "nodemask: align nodes_and{,not} with underlying bitmap ops" makes nodes_and() and nodes_andnot() propagate the return values from the underlying bit operations, enabling some cleanup in calling code (Yury Norov) - "mm/damon: hide kdamond and kdamond_lock from API callers" cleans up some DAMON internal interfaces (SeongJae Park) - "mm/khugepaged: cleanups and scan limit fix" does some cleanup work in khupaged and fixes a scan limit accounting issue (Shivank Garg) - "mm: balloon infrastructure cleanups" goes to town on the balloon infrastructure and its page migration function. Mainly cleanups, also some locking simplification (David Hildenbrand) - "mm/vmscan: add tracepoint and reason for kswapd_failures reset" adds additional tracepoints to the page reclaim code (Jiayuan Chen) - "Replace wq users and add WQ_PERCPU to alloc_workqueue() users" is part of Marco's kernel-wide migration from the legacy workqueue APIs over to the preferred unbound workqueues (Marco Crivellari) - "Various mm kselftests improvements/fixes" provides various unrelated improvements/fixes for the mm kselftests (Kevin Brodsky) - "mm: accelerate gigantic folio allocation" greatly speeds up gigantic folio allocation, mainly by avoiding unnecessary work in pfn_range_valid_contig() (Kefeng Wang) - "selftests/damon: improve leak detection and wss estimation reliability" improves the reliability of two of the DAMON selftests (SeongJae Park) - "mm/damon: cleanup kdamond, damon_call(), damos filter and DAMON_MIN_REGION" does some cleanup work in the core DAMON code (SeongJae Park) - "Docs/mm/damon: update intro, modules, maintainer profile, and misc" performs maintenance work on the DAMON documentation (SeongJae Park) - "mm: add and use vma_assert_stabilised() helper" refactors and cleans up the core VMA code. The main aim here is to be able to use the mmap write lock's lockdep state to perform various assertions regarding the locking which the VMA code requires (Lorenzo Stoakes) - "mm, swap: swap table phase II: unify swapin use" removes some old swap code (swap cache bypassing and swap synchronization) which wasn't working very well. Various other cleanups and simplifications were made. The end result is a 20% speedup in one benchmark (Kairui Song) - "enable PT_RECLAIM on more 64-bit architectures" makes PT_RECLAIM available on 64-bit alpha, loongarch, mips, parisc, and um. Various cleanups were performed along the way (Qi Zheng) * tag 'mm-stable-2026-02-11-19-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (325 commits) mm/memory: handle non-split locks correctly in zap_empty_pte_table() mm: move pte table reclaim code to memory.c mm: make PT_RECLAIM depends on MMU_GATHER_RCU_TABLE_FREE mm: convert __HAVE_ARCH_TLB_REMOVE_TABLE to CONFIG_HAVE_ARCH_TLB_REMOVE_TABLE config um: mm: enable MMU_GATHER_RCU_TABLE_FREE parisc: mm: enable MMU_GATHER_RCU_TABLE_FREE mips: mm: enable MMU_GATHER_RCU_TABLE_FREE LoongArch: mm: enable MMU_GATHER_RCU_TABLE_FREE alpha: mm: enable MMU_GATHER_RCU_TABLE_FREE mm: change mm/pt_reclaim.c to use asm/tlb.h instead of asm-generic/tlb.h mm/damon/stat: remove __read_mostly from memory_idle_ms_percentiles zsmalloc: make common caches global mm: add SPDX id lines to some mm source files mm/zswap: use %pe to print error pointers mm/vmscan: use %pe to print error pointers mm/readahead: fix typo in comment mm: khugepaged: fix NR_FILE_PAGES and NR_SHMEM in collapse_file() mm: refactor vma_map_pages to use vm_insert_pages mm/damon: unify address range representation with damon_addr_range mm/cma: replace snprintf with strscpy in cma_new_area ...	2026-02-12 11:32:37 -08:00
Linus Torvalds	5903c871e2	New features and improvements for the ext4 file system ... * Avoid unnecessary cache invadiation in the extent status cache (es_cache) when adding extents to be cached in the es_cache and we are not changing the extent tree. * Add a sysfs parameter, err_report_sec, to control how frequently to log a warning message that file system inconsistency has been detected. (Previously we logged the warning message every 24 hours.) * Avoid unnecessary forced ordered writes when appending to a file when delayed allocation is enabled. * Defer splitting unwritten extents to I/O completion to improve write performance of concurrent direct I/O writes to multiple files. * Refactor and add kunit tests to the extent splitting and conversion code paths. Various Bug Fixes * Fix a panic when the debugging DOUBLE_CHECK macro is defined. * Avoid using fast commit for rare and complex file system operations to make fast commit easier to reason about. This can also avoid some corner cases that could result in file system inconsistency if there is a crash between the fast commit before a subsequent full commit. * Fix memory leaks in error paths * Fix a false positive reports caused when running stress tests using mixed huge-page workloads caused by a race between page migration and bitmap updates. * Fix a potential recursion into file system reclaim when evicting an inode when fast commit is enabled. * Fix a warning caused by a potential double decrement to the dirty clusters counter when executing FS_IOC_SHUTDOWN when running a stress test. * Enable mballoc optimzied scanning regardless whether the inode is using indirect blocks or extent trees to map blocks. -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAmmN9DEACgkQ8vlZVpUN gaNMFggAl4vUlkNjIkvsVovTroaCE/xXhO2UIdvQTUXQX+8U6i8Zft+F1ZgLWvVx fz84w9k0t47MHixYOF/+55JK3ljA7oufsqS60eZodpe//8/uK2C6tvtAJIqGJBjw tp306bidXSYhOVA3PqPSy0YZCIjMI08xiEYRio68VjpoHHJkr79K6eN+KcFOIsuF a+OfZN//IfOA1F53Gu9nO+X9XSBJ+yiztWIRhCS+DBKBC/bIg6ecybQKXOtvjvpw ggrIXQtHxhekqTjp2q467cNI51+s9aizM8RhnpP5DmS7e9U0Y/AsJ/5My5eJrimM +jKLpAQqKZK+IFuKxwEgLCAe5fOsfw== =eLR/ -----END PGP SIGNATURE----- Merge tag 'ext4_for_linus-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull ext4 updates from Ted Ts'o: "New features and improvements for the ext4 file system - Avoid unnecessary cache invalidation in the extent status cache (es_cache) when adding extents to be cached in the es_cache and we are not changing the extent tree - Add a sysfs parameter, err_report_sec, to control how frequently to log a warning message that file system inconsistency has been detected (Previously we logged the warning message every 24 hours) - Avoid unnecessary forced ordered writes when appending to a file when delayed allocation is enabled - Defer splitting unwritten extents to I/O completion to improve write performance of concurrent direct I/O writes to multiple files - Refactor and add kunit tests to the extent splitting and conversion code paths Various Bug Fixes: - Fix a panic when the debugging DOUBLE_CHECK macro is defined - Avoid using fast commit for rare and complex file system operations to make fast commit easier to reason about. This can also avoid some corner cases that could result in file system inconsistency if there is a crash between the fast commit before a subsequent full commit - Fix memory leaks in error paths - Fix a false positive reports caused when running stress tests using mixed huge-page workloads caused by a race between page migration and bitmap updates - Fix a potential recursion into file system reclaim when evicting an inode when fast commit is enabled - Fix a warning caused by a potential double decrement to the dirty clusters counter when executing FS_IOC_SHUTDOWN when running a stress test - Enable mballoc optimized scanning regardless whether the inode is using indirect blocks or extent trees to map blocks" * tag 'ext4_for_linus-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (45 commits) et4: allow zeroout when doing written to unwritten split ext4: refactor split and convert extents ext4: refactor zeroout path and handle all cases ext4: propagate flags to ext4_convert_unwritten_extents_endio() ext4: propagate flags to convert_initialized_extent() ext4: add extent status cache support to kunit tests ext4: kunit tests for higher level extent manipulation functions ext4: kunit tests for extent splitting and conversion ext4: use optimized mballoc scanning regardless of inode format ext4: always allocate blocks only from groups inode can use ext4: fix dirtyclusters double decrement on fs shutdown ext4: fast commit: make s_fc_lock reclaim-safe ext4: fix e4b bitmap inconsistency reports ext4: remove redundant NULL check after __GFP_NOFAIL ext4: remove EXT4_GET_BLOCKS_IO_CREATE_EXT ext4: simplify the mapping query logic in ext4_iomap_begin() ext4: remove unused unwritten parameter in ext4_dio_write_iter() ext4: remove useless ext4_iomap_overwrite_ops ext4: avoid starting handle when dio writing an unwritten extent ext4: don't split extent before submitting I/O ...	2026-02-12 10:19:58 -08:00
Linus Torvalds	37a93dd5c4	Networking changes for 7.0 ... Core & protocols ---------------- - A significant effort all around the stack to guide the compiler to make the right choice when inlining code, to avoid unneeded calls for small helper and stack canary overhead in the fast-path. This generates better and faster code with very small or no text size increases, as in many cases the call generated more code than the actual inlined helper. - Extend AccECN implementation so that is now functionally complete, also allow the user-space enabling it on a per network namespace basis. - Add support for memory providers with large (above 4K) rx buffer. Paired with hw-gro, larger rx buffer sizes reduce the number of buffers traversing the stack, dincreasing single stream CPU usage by up to ~30%. - Do not add HBH header to Big TCP GSO packets. This simplifies the RX path, the TX path and the NIC drivers, and is possible because user-space taps can now interpret correctly such packets without the HBH hint. - Allow IPv6 routes to be configured with a gateway address that is resolved out of a different interface than the one specified, aligning IPv6 to IPv4 behavior. - Multi-queue aware sch_cake. This makes it possible to scale the rate shaper of sch_cake across multiple CPUs, while still enforcing a single global rate on the interface. - Add support for the nbcon (new buffer console) infrastructure to netconsole, enabling lock-free, priority-based console operations that are safer in crash scenarios. - Improve the TCP ipv6 output path to cache the flow information, saving cpu cycles, reducing cache line misses and stack use. - Improve netfilter packet tracker to resolve clashes for most protocols, avoiding unneeded drops on rare occasions. - Add IP6IP6 tunneling acceleration to the flowtable infrastructure. - Reduce tcp socket size by one cache line. - Notify neighbour changes atomically, avoiding inconsistencies between the notification sequence and the actual states sequence. - Add vsock namespace support, allowing complete isolation of vsocks across different network namespaces. - Improve xsk generic performances with cache-alignment-oriented optimizations. - Support netconsole automatic target recovery, allowing netconsole to reestablish targets when underlying low-level interface comes back online. Driver API ---------- - Support for switching the working mode (automatic vs manual) of a DPLL device via netlink. - Introduce PHY ports representation to expose multiple front-facing media ports over a single MAC. - Introduce "rx-polarity" and "tx-polarity" device tree properties, to generalize polarity inversion requirements for differential signaling. - Add helper to create, prepare and enable managed clocks. Device drivers -------------- - Add Huawei hinic3 PF etherner driver. - Add DWMAC glue driver for Motorcomm YT6801 PCIe ethernet controller. - Add ethernet driver for MaxLinear MxL862xx switches - Remove parallel-port Ethernet driver. - Convert existing driver timestamp configuration reporting to hwtstamp_get and remove legacy ioctl(). - Convert existing drivers to .get_rx_ring_count(), simplifing the RX ring count retrieval. Also remove the legacy fallback path. - Ethernet high-speed NICs: - Broadcom (bnxt, bng): - bnxt: add FW interface update to support FEC stats histogram and NVRAM defragmentation - bng: add TSO and H/W GRO support - nVidia/Mellanox (mlx5): - improve latency of channel restart operations, reducing the used H/W resources - add TSO support for UDP over GRE over VLAN - add flow counters support for hardware steering (HWS) rules - use a static memory area to store headers for H/W GRO, leading to 12% RX tput improvement - Intel (100G, ice, idpf): - ice: reorganizes layout of Tx and Rx rings for cacheline locality and utilizes __cacheline_group* macros on the new layouts - ice: introduces Synchronous Ethernet (SyncE) support - Meta (fbnic): - adds debugfs for firmware mailbox and tx/rx rings vectors - Ethernet virtual: - geneve: introduce GRO/GSO support for double UDP encapsulation - Ethernet NICs consumer, and embedded: - Synopsys (stmmac): - some code refactoring and cleanups - RealTek (r8169): - add support for RTL8127ATF (10G Fiber SFP) - add dash and LTR support - Airoha: - AN8811HB 2.5 Gbps phy support - Freescale (fec): - add XDP zero-copy support - Thunderbolt: - add get link setting support to allow bonding - Renesas: - add support for RZ/G3L GBETH SoC - Ethernet switches: - Maxlinear: - support R(G)MII slow rate configuration - add support for Intel GSW150 - Motorcomm (yt921x): - add DCB/QoS support - TI: - icssm-prueth: support bridging (STP/RSTP) via the switchdev framework - Ethernet PHYs: - Realtek: - enable SGMII and 2500Base-X in-band auto-negotiation - simplify and reunify C22/C45 drivers - Micrel: convert bindings to DT schema - CAN: - move skb headroom content into skb extensions, making CAN metadata access more robust - CAN drivers: - rcar_canfd: - add support for FD-only mode - add support for the RZ/T2H SoC - sja1000: cleanup the CAN state handling - WiFi: - implement EPPKE/802.1X over auth frames support - split up drop reasons better, removing generic RX_DROP - additional FTM capabilities: 6 GHz support, supported number of spatial streams and supported number of LTF repetitions - better mac80211 iterators to enumerate resources - initial UHR (Wi-Fi 8) support for cfg80211/mac80211 - WiFi drivers: - Qualcomm/Atheros: - ath11k: support for Channel Frequency Response measurement - ath12k: a significant driver refactor to support multi-wiphy devices and and pave the way for future device support in the same driver (rather than splitting to ath13k) - ath12k: support for the QCC2072 chipset - Intel: - iwlwifi: partial Neighbor Awareness Networking (NAN) support - iwlwifi: initial support for U-NII-9 and IEEE 802.11bn - RealTek (rtw89): - preparations for RTL8922DE support - Bluetooth: - implement setsockopt(BT_PHY) to set the connection packet type/PHY - set link_policy on incoming ACL connections - Bluetooth drivers: - btusb: add support for MediaTek7920, Realtek RTL8761BU and 8851BE - btqca: add WCN6855 firmware priority selection feature Signed-off-by: Paolo Abeni <pabeni@redhat.com> -----BEGIN PGP SIGNATURE----- iQJGBAABCgAwFiEEg1AjqC77wbdLX2LbKSR5jcyPE6QFAmmMum4SHHBhYmVuaUBy ZWRoYXQuY29tAAoJECkkeY3MjxOkDnMP/3bpHAGj+gylTid3Xsj0TjJ8AkPsQs+W uvSMiCB1TvGCTD9kK36Vr+qPoIgJY10UxYMMjt5Gs0A9TvGDDfYnUOVoUIkfkWCH grqSdp6dVkyaJVfyLEcuOVQQG2HwEnhC4c3ZOhOxaKNAnsLCP142lYsMR9ktGRuA 4vDGtz1+y7t8qBk/lyfXDM71KRrtq0HWJZIhmhz8QXTBsgPDfSejbTPNxXQOJoeO sKeArsHr/Cmvf89ZtLZ63vbfr4BKDm4PeXqPYR3PrQs2Yu6I1EK4lehygTY2yE2O I3MEPlvpa/tiVLxqXNNwEFbYIkMPY6FXS9x05hTxNZM65A6aB3vvdkqPVnVmAlXE f+4PYg9paI13lbzZOeQbGfZ5HgPpzQvnginaaX6s9Fp12K3Ll1FkwWdUznFWhzVn 5LSrGyecR00CdKJByTIw9JGg/1ptz5a57pa8OQmcKRx3WhQ1XeV5TIJQF4QcPgHw ApyjmeGDTQMQMzha1fsaVr+i6BK2zgZvKK9uGDTX90xn2JUw/M75tyOlsTtGlnuM sZgj0KVGQlG2wLwBB/+D4S9Oi9YlPG00rkCs0E4jk5C/G4NBmMgpEPQg6azkb57h Uiy0paohxfwcZ3qbGA9In091ClGqIwOiCBaq+uXRq1ro88Neo6PWkjz5ItNrsD8t Ttgd5AVAQyPT =O31Y -----END PGP SIGNATURE----- Merge tag 'net-next-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Paolo Abeni: "Core & protocols: - A significant effort all around the stack to guide the compiler to make the right choice when inlining code, to avoid unneeded calls for small helper and stack canary overhead in the fast-path. This generates better and faster code with very small or no text size increases, as in many cases the call generated more code than the actual inlined helper. - Extend AccECN implementation so that is now functionally complete, also allow the user-space enabling it on a per network namespace basis. - Add support for memory providers with large (above 4K) rx buffer. Paired with hw-gro, larger rx buffer sizes reduce the number of buffers traversing the stack, dincreasing single stream CPU usage by up to ~30%. - Do not add HBH header to Big TCP GSO packets. This simplifies the RX path, the TX path and the NIC drivers, and is possible because user-space taps can now interpret correctly such packets without the HBH hint. - Allow IPv6 routes to be configured with a gateway address that is resolved out of a different interface than the one specified, aligning IPv6 to IPv4 behavior. - Multi-queue aware sch_cake. This makes it possible to scale the rate shaper of sch_cake across multiple CPUs, while still enforcing a single global rate on the interface. - Add support for the nbcon (new buffer console) infrastructure to netconsole, enabling lock-free, priority-based console operations that are safer in crash scenarios. - Improve the TCP ipv6 output path to cache the flow information, saving cpu cycles, reducing cache line misses and stack use. - Improve netfilter packet tracker to resolve clashes for most protocols, avoiding unneeded drops on rare occasions. - Add IP6IP6 tunneling acceleration to the flowtable infrastructure. - Reduce tcp socket size by one cache line. - Notify neighbour changes atomically, avoiding inconsistencies between the notification sequence and the actual states sequence. - Add vsock namespace support, allowing complete isolation of vsocks across different network namespaces. - Improve xsk generic performances with cache-alignment-oriented optimizations. - Support netconsole automatic target recovery, allowing netconsole to reestablish targets when underlying low-level interface comes back online. Driver API: - Support for switching the working mode (automatic vs manual) of a DPLL device via netlink. - Introduce PHY ports representation to expose multiple front-facing media ports over a single MAC. - Introduce "rx-polarity" and "tx-polarity" device tree properties, to generalize polarity inversion requirements for differential signaling. - Add helper to create, prepare and enable managed clocks. Device drivers: - Add Huawei hinic3 PF etherner driver. - Add DWMAC glue driver for Motorcomm YT6801 PCIe ethernet controller. - Add ethernet driver for MaxLinear MxL862xx switches - Remove parallel-port Ethernet driver. - Convert existing driver timestamp configuration reporting to hwtstamp_get and remove legacy ioctl(). - Convert existing drivers to .get_rx_ring_count(), simplifing the RX ring count retrieval. Also remove the legacy fallback path. - Ethernet high-speed NICs: - Broadcom (bnxt, bng): - bnxt: add FW interface update to support FEC stats histogram and NVRAM defragmentation - bng: add TSO and H/W GRO support - nVidia/Mellanox (mlx5): - improve latency of channel restart operations, reducing the used H/W resources - add TSO support for UDP over GRE over VLAN - add flow counters support for hardware steering (HWS) rules - use a static memory area to store headers for H/W GRO, leading to 12% RX tput improvement - Intel (100G, ice, idpf): - ice: reorganizes layout of Tx and Rx rings for cacheline locality and utilizes __cacheline_group* macros on the new layouts - ice: introduces Synchronous Ethernet (SyncE) support - Meta (fbnic): - adds debugfs for firmware mailbox and tx/rx rings vectors - Ethernet virtual: - geneve: introduce GRO/GSO support for double UDP encapsulation - Ethernet NICs consumer, and embedded: - Synopsys (stmmac): - some code refactoring and cleanups - RealTek (r8169): - add support for RTL8127ATF (10G Fiber SFP) - add dash and LTR support - Airoha: - AN8811HB 2.5 Gbps phy support - Freescale (fec): - add XDP zero-copy support - Thunderbolt: - add get link setting support to allow bonding - Renesas: - add support for RZ/G3L GBETH SoC - Ethernet switches: - Maxlinear: - support R(G)MII slow rate configuration - add support for Intel GSW150 - Motorcomm (yt921x): - add DCB/QoS support - TI: - icssm-prueth: support bridging (STP/RSTP) via the switchdev framework - Ethernet PHYs: - Realtek: - enable SGMII and 2500Base-X in-band auto-negotiation - simplify and reunify C22/C45 drivers - Micrel: convert bindings to DT schema - CAN: - move skb headroom content into skb extensions, making CAN metadata access more robust - CAN drivers: - rcar_canfd: - add support for FD-only mode - add support for the RZ/T2H SoC - sja1000: cleanup the CAN state handling - WiFi: - implement EPPKE/802.1X over auth frames support - split up drop reasons better, removing generic RX_DROP - additional FTM capabilities: 6 GHz support, supported number of spatial streams and supported number of LTF repetitions - better mac80211 iterators to enumerate resources - initial UHR (Wi-Fi 8) support for cfg80211/mac80211 - WiFi drivers: - Qualcomm/Atheros: - ath11k: support for Channel Frequency Response measurement - ath12k: a significant driver refactor to support multi-wiphy devices and and pave the way for future device support in the same driver (rather than splitting to ath13k) - ath12k: support for the QCC2072 chipset - Intel: - iwlwifi: partial Neighbor Awareness Networking (NAN) support - iwlwifi: initial support for U-NII-9 and IEEE 802.11bn - RealTek (rtw89): - preparations for RTL8922DE support - Bluetooth: - implement setsockopt(BT_PHY) to set the connection packet type/PHY - set link_policy on incoming ACL connections - Bluetooth drivers: - btusb: add support for MediaTek7920, Realtek RTL8761BU and 8851BE - btqca: add WCN6855 firmware priority selection feature" * tag 'net-next-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1254 commits) bnge/bng_re: Add a new HSI net: macb: Fix tx/rx malfunction after phy link down and up af_unix: Fix memleak of newsk in unix_stream_connect(). net: ti: icssg-prueth: Add optional dependency on HSR net: dsa: add basic initial driver for MxL862xx switches net: mdio: add unlocked mdiodev C45 bus accessors net: dsa: add tag format for MxL862xx switches dt-bindings: net: dsa: add MaxLinear MxL862xx selftests: drivers: net: hw: Modify toeplitz.c to poll for packets octeontx2-pf: Unregister devlink on probe failure net: renesas: rswitch: fix forwarding offload statemachine ionic: Rate limit unknown xcvr type messages tcp: inet6_csk_xmit() optimization tcp: populate inet->cork.fl.u.ip6 in tcp_v6_syn_recv_sock() tcp: populate inet->cork.fl.u.ip6 in tcp_v6_connect() ipv6: inet6_csk_xmit() and inet6_csk_update_pmtu() use inet->cork.fl.u.ip6 ipv6: use inet->cork.fl.u.ip6 and np->final in ip6_datagram_dst_update() ipv6: use np->final in inet6_sk_rebuild_header() ipv6: add daddr/final storage in struct ipv6_pinfo net: stmmac: qcom-ethqos: fix qcom_ethqos_serdes_powerup() ...	2026-02-11 19:31:52 -08:00
Linus Torvalds	1c2b4a4c2b	pci-v7.0-changes ... -----BEGIN PGP SIGNATURE----- iQJIBAABCgAyFiEEgMe7l+5h9hnxdsnuWYigwDrT+vwFAmmKJO4UHGJoZWxnYWFz QGdvb2dsZS5jb20ACgkQWYigwDrT+vzotA/+OGSOPOs9hWd+OwNF5Dm2WA81yG/3 K3Jx5uMuPoSjduMbPhVcib02Mr6YDJTa6WlYNVa76ADs2G6HxcVMFHutlYudSVcl umSF48FnyeH1LTba88dRoVj4DB47Cue+BfhYY2L0ZtxmjQq/NRuDFAaGBh54uNeF Gcdgr52QlM01n1X6yKvl7vE9gPdcPH80L256ssHAm6oSOHI1SPc6gqEKUUD02f8G FtzfTUAq/cWYjlY3VoS5GKtdHxFYuXqC5WfbURhJ11o/nVJY9k1Zx8n4eI1tmAtN 7q692xjWSQJZlzepOBBEyjFUpIiy80tZ43z2ptRRBeI/n/qMmGPAov/g4MzegBWG IAEHTAp/xx1Wra1ynr7RNvYVcPpXm2TEim8gIGah9DkHbNgbu7ing+OO7DnQuyfD 2h4hGD2622o6uikqkwzVd4mYuIcFu7SA6yROZhFn83BRnz0QOQienDrDlvOB8XCV EodLAOMc2KClvOmmriFMy11PH7MFFoXexV6KS83VfDJHi4+XzBsy0w6TXTohcA9s JTPIkSWqf/u6SrdLjXlFGyyJ2/KCgRiXFIBhhtYBMhDuuO7nG+mcSVzMa1PT0s6C PF+QoT7sJof/5VMJ4o3BgPrPkD3CQICrlt8XIt5I8ngsy6RZRQ5rt+pUix7Shcn8 DgcunuINYfQtkfw= =LIjp -----END PGP SIGNATURE----- Merge tag 'pci-v7.0-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci Pull PCI updates from Bjorn Helgaas: "Enumeration: - Don't try to enable Extended Tags on VFs since that bit is Reserved and causes misleading log messages (Håkon Bugge) - Initialize Endpoint Read Completion Boundary to match Root Port, regardless of ACPI _HPX (Håkon Bugge) - Apply _HPX PCIe Setting Record only to AER configuration, and only when OS owns PCIe hotplug but not AER, to avoid clobbering Extended Tag and Relaxed Ordering settings (Håkon Bugge) Resource management: - Move CardBus code to setup-cardbus.c and only build it when CONFIG_CARDBUS is set (Ilpo Järvinen) - Fix bridge window alignment with optional resources, where additional alignment requirement was previously lost (Ilpo Järvinen) - Stop over-estimating bridge window size since they are now assigned without any gaps between them (Ilpo Järvinen) - Increase resource MAX_IORES_LEVEL to avoid /proc/iomem flattening for nested bridges and endpoints (Ilpo Järvinen) - Add pbus_mem_size_optional() to handle sizes of optional resources (SR-IOV VF BARs, expansion ROMs, bridge windows) (Ilpo Järvinen) - Don't claim disabled bridge windows to avoid spurious claim failures (Ilpo Järvinen) Driver binding: - Fix device reference leak in pcie_port_remove_service() (Uwe Kleine-König) - Move pcie_port_bus_match() and pcie_port_bus_type to PCIe-specific portdrv.c (Uwe Kleine-König) - Convert portdrv to use pcie_port_bus_type.probe() and .remove() callbacks so .probe() and .remove() can eventually be removed from struct device_driver (Uwe Kleine-König) Error handling: - Clear stale errors on reporting agents upon probe so they don't look like recent errors (Lukas Wunner) - Add generic RAS tracepoint for hotplug events (Shuai Xue) - Add RAS tracepoint for link speed changes (Shuai Xue) Power management: - Avoid redundant delay on transition from D3hot to D3cold if the device was already in D3hot (Brian Norris) - Prevent runtime suspend until devices are fully initialized to avoid saving incompletely configured device state (Brian Norris) Power control: - Add power_on/off callbacks with generic signature to pwrseq, tc9563, and slot drivers so they can be used by pwrctrl core (Manivannan Sadhasivam) - Add PCIe M.2 connector support to the slot pwrctrl driver (Manivannan Sadhasivam) - Switch to pwrctrl interfaces to create, destroy, and power on/off devices, calling them from host controller drivers instead of the PCI core (Manivannan Sadhasivam) - Drop qcom .assert_perst() callbacks since this is now done by the controller driver instead of the pwrctrl driver (Manivannan Sadhasivam) Virtualization: - Remove an incorrect unlock in pci_slot_trylock() error handling (Jinhui Guo) - Lock the bridge device for slot reset (Keith Busch) - Enable ACS after IOMMU configuration on OF platforms so ACS is enabled an all devices; previously the first device enumerated (typically a Root Port) didn't have ACS enabled (Manivannan Sadhasivam) - Disable ACS Source Validation for IDT 0x80b5 and 0x8090 switches to work around hardware erratum; previously ACS SV was only temporarily disabled, which worked for enumeration but not after reset (Manivannan Sadhasivam) Peer-to-peer DMA: - Release per-CPU pgmap ref when vm_insert_page() fails to avoid hang when removing the PCI device (Hou Tao) - Remove incorrect p2pmem_alloc_mmap() warning about page refcount (Hou Tao) Endpoint framework: - Add configfs sub-groups synchronously to avoid NULL pointer dereference when racing with removal (Liu Song) - Fix swapped parameters in pci_{primary/secondary}_epc_epf_unlink() functions (Manikanta Maddireddy) ASPEED PCIe controller driver: - Add ASPEED Root Complex DT binding and driver (Jacky Chou) Freescale i.MX6 PCIe controller driver: - Add DT binding and driver support for an optional external refclock in addition to the refclock from the internal PLL (Richard Zhu) - Fix CLKREQ# control so host asserts it during enumeration and Endpoints can use it afterwards to exit the L1.2 link state (Richard Zhu) NVIDIA Tegra PCIe controller driver: - Export irq_domain_free_irqs() to allow PCI/MSI drivers that tear down MSI domains to be built as modules (Aaron Kling) - Allow pci-tegra to be built as a module (Aaron Kling) NVIDIA Tegra194 PCIe controller driver: - Relax Kconfig so tegra194 can be built for platforms beyond Tegra194 (Vidya Sagar) Qualcomm PCIe controller driver: - Merge SC8180x DT binding into SM8150 (Krzysztof Kozlowski) - Move SDX55, SDM845, QCS404, IPQ5018, IPQ6018, IPQ8074 Gen3, IPQ8074, IPQ4019, IPQ9574, APQ8064, MSM8996, APQ8084 to dedicated schema (Krzysztof Kozlowski) - Add DT binding and driver support for SA8255p Endpoint being configured by firmware (Mrinmay Sarkar) - Parse PERST# from all PCIe bridge nodes for future platforms that will have PERST# in Switch Downstream Ports as well as in Root Ports (Manivannan Sadhasivam) Renesas RZ/G3S PCIe controller driver: - Use pci_generic_config_write() since the writability provided by the custom wrapper is unnecessary (Claudiu Beznea) SOPHGO PCIe controller driver: - Disable ASPM L0s and L1 on Sophgo 2044 PCIe Root Ports (Inochi Amaoto) Synopsys DesignWare PCIe controller driver: - Extend PCI_FIND_NEXT_CAP() and PCI_FIND_NEXT_EXT_CAP() to return a pointer to the preceding Capability, to allow removal of Capabilities that are advertised but not fully implemented (Qiang Yu) - Remove MSI and MSI-X Capabilities in platforms that can't support them, so the PCI core automatically falls back to INTx (Qiang Yu) - Add ASPM L1.1 and L1.2 Substates context to debugfs ltssm_status for drivers that support this (Shawn Lin) - Skip PME_Turn_Off broadcast and L2/L3 transition during suspend if link is not up to avoid an unnecessary timeout (Manivannan Sadhasivam) - Revert dw-rockchip, qcom, and DWC core changes that used link-up IRQs to trigger enumeration instead of waiting for link to be up because the PCI core doesn't allocate bus number space for hierarchies that might be attached (Niklas Cassel) - Make endpoint iATU entry for MSI permanent instead of programming it dynamically, which is slow and racy with respect to other concurrent traffic, e.g., eDMA (Koichiro Den) - Use iMSI-RX MSI target address when possible to fix endpoints using 32-bit MSI (Shawn Lin) - Allow DWC host controller driver probe to continue if device is not found or found but inactive; only fail when there's an error with the link (Manivannan Sadhasivam) - For controllers like NXP i.MX6QP and i.MX7D, where LTSSM registers are not accessible after PME_Turn_Off, simply wait 10ms instead of polling for L2/L3 Ready (Richard Zhu) - Use multiple iATU entries to map large bridge windows and DMA ranges when necessary instead of failing (Samuel Holland) - Add EPC dynamic_inbound_mapping feature bit for Endpoint Controllers that can update BAR inbound address translation without requiring EPF driver to clear/reset the BAR first, and advertise it for DWC-based Endpoints (Koichiro Den) - Add EPC subrange_mapping feature bit for Endpoint Controllers that can map multiple independent inbound regions in a single BAR, implement subrange mapping, advertise it for DWC-based Endpoints, and add Endpoint selftests for it (Koichiro Den) - Make resizable BARs work for Endpoint multi-PF configurations; previously it only worked for PF 0 (Aksh Garg) - Fix Endpoint non-PF 0 support for BAR configuration, ATU mappings, and Address Match Mode (Aksh Garg) - Set up iATU when ECAM is enabled; previously IO and MEM outbound windows weren't programmed, and ECAM-related iATU entries weren't restored after suspend/resume, so config accesses failed (Krishna Chaitanya Chundru) Miscellaneous: - Use system_percpu_wq and WQ_PERCPU to explicitly request per-CPU work so WQ_UNBOUND can eventually be removed (Marco Crivellari)" * tag 'pci-v7.0-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (176 commits) PCI/bwctrl: Disable BW controller on Intel P45 using a quirk PCI: Disable ACS SV for IDT 0x8090 switch PCI: Disable ACS SV for IDT 0x80b5 switch PCI: Cache ACS Capabilities register PCI: Enable ACS after configuring IOMMU for OF platforms PCI: Add ACS quirk for Pericom PI7C9X2G404 switches [12d8:b404] PCI: Add ACS quirk for Qualcomm Hamoa & Glymur PCI: Use device_lock_assert() to verify device lock is held PCI: Use lockdep_assert_held(pci_bus_sem) to verify lock is held PCI: Fix pci_slot_lock () device locking PCI: Fix pci_slot_trylock() error handling PCI: Mark Nvidia GB10 to avoid bus reset PCI: Mark ASM1164 SATA controller to avoid bus reset PCI: host-generic: Avoid reporting incorrect 'missing reg property' error PCI/PME: Replace RMW of Root Status register with direct write PCI/AER: Clear stale errors on reporting agents upon probe PCI: Don't claim disabled bridge windows PCI: rzg3s-host: Fix device node reference leak in rzg3s_pcie_host_parse_port() PCI: dwc: Fix missing iATU setup when ECAM is enabled PCI: dwc: Clean up iATU index usage in dw_pcie_iatu_setup() ...	2026-02-11 17:20:38 -08:00
Linus Torvalds	ff661eeee2	cgroup: Changes for v6.20 ... - cpuset changes: - Continue separating v1 and v2 implementations by moving more v1-specific logic into cpuset-v1.c. - Improve partition handling. Sibling partitions are no longer invalidated on cpuset.cpus conflict, cpuset.cpus changes no longer fail in v2, and effective_xcpus computation is made consistent. - Fix partition effective CPUs overlap that caused a warning on cpuset removal when sibling partitions shared CPUs. - Increase the maximum cgroup subsystem count from 16 to 32 to accommodate future subsystem additions. - Misc cleanups and selftest improvements including switching to css_is_online() helper, removing dead code and stale documentation references, using lockdep_assert_cpuset_lock_held() consistently, and adding polling helpers for asynchronously updated cgroup statistics. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCaYozIw4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGZQKAQD51KJQz4M79wf2yBhIBLOnM4aakMalhSwZNL4O JiGutwD+Ir33VzNX8aXBuDin9p4wI15O54PhqSenJbelKRQ3Dws= =gR7L -----END PGP SIGNATURE----- Merge tag 'cgroup-for-6.20' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup updates from Tejun Heo: - cpuset changes: - Continue separating v1 and v2 implementations by moving more v1-specific logic into cpuset-v1.c - Improve partition handling. Sibling partitions are no longer invalidated on cpuset.cpus conflict, cpuset.cpus changes no longer fail in v2, and effective_xcpus computation is made consistent - Fix partition effective CPUs overlap that caused a warning on cpuset removal when sibling partitions shared CPUs - Increase the maximum cgroup subsystem count from 16 to 32 to accommodate future subsystem additions - Misc cleanups and selftest improvements including switching to css_is_online() helper, removing dead code and stale documentation references, using lockdep_assert_cpuset_lock_held() consistently, and adding polling helpers for asynchronously updated cgroup statistics * tag 'cgroup-for-6.20' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (21 commits) cpuset: fix overlap of partition effective CPUs cgroup: increase maximum subsystem count from 16 to 32 cgroup: Remove stale cpu.rt.max reference from documentation cpuset: replace direct lockdep_assert_held() with lockdep_assert_cpuset_lock_held() cgroup/cpuset: Move the v1 empty cpus/mems check to cpuset1_validate_change() cgroup/cpuset: Don't invalidate sibling partitions on cpuset.cpus conflict cgroup/cpuset: Don't fail cpuset.cpus change in v2 cgroup/cpuset: Consistently compute effective_xcpus in update_cpumasks_hier() cgroup/cpuset: Streamline rm_siblings_excl_cpus() cpuset: remove dead code in cpuset-v1.c cpuset: remove v1-specific code from generate_sched_domains cpuset: separate generate_sched_domains for v1 and v2 cpuset: move update_domain_attr_tree to cpuset_v1.c cpuset: add cpuset1_init helper for v1 initialization cpuset: add cpuset1_online_css helper for v1-specific operations cpuset: add lockdep_assert_cpuset_lock_held helper cpuset: Remove unnecessary checks in rebuild_sched_domains_locked cgroup: switch to css_is_online() helper selftests: cgroup: Replace sleep with cg_read_key_long_poll() for waiting on nr_dying_descendants selftests: cgroup: make test_memcg_sock robust against delayed sock stats ...	2026-02-11 13:20:50 -08:00
Linus Torvalds	939faf71cf	drm for 7.0-rc1 ... core: - drop kgdb support - replace system workqueue with percpu - account for property blobs in memcg - MAINTAINERS updates for xe + buddy rust: - Fix documentation for Registration constructors. - Use pin_init::zeroed() for fops initialization. - Annotate DRM helpers with __rust_helper. - Improve safety documentation for gem::Object::new(). - Update AlwaysRefCounted imports. - mm: Prevent integer overflow in page_align(). atomic: - add drm_device pointer to drm_private_obj - introduce gamma/degamma LUT size check buddy: - fix free_trees memory leak - prevent BUG_ON bridge: - introduce drm_bridge_unplug/enter/exit - add connector argument to .hpd_notify - lots of recounting conversions - convert rockchip inno hdmi to bridge - lontium-lt9611uxc: switch to HDMI audio helpers - dw-hdmi-qp: add support for HPD-less setups - Algoltek AG6311 support panels: - edp: CSW MNE007QB3-1, AUO B140HAN06.4, AUO B140QAX01.H - st75751: add SPI support - Sitronix ST7920, Samsung LTL106HL02 - LG LH546WF1-ED01, HannStar HSD156J - BOE NV130WUM-T08 - Innolux G150XGE-L05 - Anbernic RG-DS dma-buf: - improve sg_table debugging - add tracepoints - call clear_page instead of memset - start to introduce cgroup memory accounting in heaps - remove sysfs stats dma-fence: - add new helpers dp: - mst: avoid oob access with vcpi=0 hdmi: - limit infoframes exposure to userspace gem: - reduce page table overhead with THP - fix leak in drm_gem_get_unmapped_area gpuvm: - API sanitation for rust bindings sched: - introduce new helpers panic: - report invalid panic modes - add kunit tests i915/xe display: - Expose sharpness only if num_scalers is >= 2 - Add initial Xe3P_LPD for NVL - BMG FBC support - Add MTL+ platforms to support dpll framework _ fix DIMM_S DRM decoding on ICL - Return to using AUX interrupts - PSR/Panel replay refactoring - use consolidation HDMI tables - Xe3_LPD CD2X dividier changes xe: - vfio: add vfio_pci for intel GPU - multi queue support - dynamic pagemaps and multi-device SVM - expose temp attribs in hwmon - NO_COMPRESSION bo flag - expose MERT OA unit - sysfs survivability refactor - SRIOV PF: add MERT support - enable SR-IOV VF migration - Enable I2C/NVM on Crescent Island - Xe3p page reclaimation support - introduce SRIOV scheduler groups - add SoC remappt support in system controller - insert compiler barriers in GuC code - define NVL GuC firmware - handle GT resume failure - fix drm scheduler layering violations - enable GSC loading and PXP for PTL - disable GuC Power DCC strategy on PTL - unregister drm device on probe error i915: - move to kernel standard fault injection - bump recommended GuC version for DG2 and MTL amdgpu: - SMUIO 15.x, PSP 15.x support - IH 6.1.1/7.1 support - MMHUB 3.4/4.2 support - GC 11.5.4/12.1 support - SDMA 6.1.4/7.1/7.11.4 support - JPEG 5.3 support - UserQ updates - GC 9 gfx queue reset support - TTM memory ops parallelization - convert legacy logging to new helpers - DC analog fixes amdkfd: - GC 11.5.4/12.1 suppport - SDMA 6.1.4/7.1 support - per context support - increase kfd process hash table - Reserved SDMA rework radeon: - convert legacy logging to new helpers - use devm for i2c adapters msm: - GPU - Document a612/RGMU dt bindings - UBWC 6.0 support (for A840 / Kaanapali) - a225 support - DPU: - Switched to use virtual planes by default - Fixed DSI CMD panels on DPU 3.x - Rewrote format handling to remove intermediate representation - Fixed watchdog on DPU 8.x+ - Fixed TE / Vsync source setting on DPU 8.x+ - Added 3D_Mux on SC7280 - Kaanapali platform support - Fixed UBWC register programming - Made RM reserve DSPP-enabled mixers for CRTCs with LMs. - Gamma correction support - DP: - Enabled support for eDP 1.4+ link rate tables - Fixed MDSS1 DP indices on SA8775P, making them to work - Fixed msm_dp_ctrl_config_msa() to work with LLVM 20 - DSI: - Documented QCS8300 as compatible with SA8775P - Kaanapali platform support - DSI PHY: - switched to divider_determine_rate() - MDP5: - Dropped support for MSM8998, SDM660 and SDM630 (switched over to DPU) - MDSS: - Kaanapali platform support - Fixed UBWC register programming nova-core: - Prepare for Turing support. This includes parsing and handling Turing-specific firmware headers and sections as well as a Turing Falcon HAL implementation. - Get rid of the Result<impl PinInit<T, E>> anti-pattern. - Relocate initializer-specific code into the appropriate initializer. - Use CStr::from_bytes_until_nul() to remove custom helpers. - Improve handling of unexpected firmware values. - Clean up redundant debug prints. - Replace c_str!() with native Rust C-string literals. - Update nova-core task list. nova: - Align GEM object size to system page size. tyr: - Use generated uAPI bindings for GpuInfo. - Replace manual sleeps with read_poll_timeout(). - Replace c_str!() with native Rust C-string literals. - Suppress warnings for unread fields. - Fix incorrect register name in print statement. nouveau: - fix big page table support races in PTE management - improve reclocking on tegra 186+ amdxdna: - fix suspend race conditions - improve handling of zero tail pointers - fix cu_idx overwritten during command setup - enable hardware context priority - remove NPU2 support - update message buffer allocation requirements - update firmware version check ast: - support imported cursor buffers - big endian fixes etnaviv: - add PPU flop reset support imagination: - add AM62P support - introduce hw version checks ivpu: - implement warm boot flow panfrost: - add bo sync ioctl - add GPU_PM_RT support for RZ/G3E SoC panthor: - add bo sync ioctl - enable timestamp propagation - scheduler robustness improvements - VM termination fixes - huge page support rockchip: - RK3368 HDMI Support - get rid of atomic_check fixups - RK3506 support - RK3576/RK3588 improved HPD handling rz-du: - RZ/V2H(P) MIPI-DSI Support v3d: - fix DMA segment size - convert to new logging helpers mediatek: - move DP training to hotplug thread - convert logging to new helpers - add support for HS speed DSI - Genio 510/700/1200-EVK, Radxa NIO-12L HDMI support atmel-hlcdc: - switch to drmm resource - support nomodeset - use newer helpers hisilicon: - fix various DP bugs renesas: - fix kernel panic on reboot exynos: - fix vidi_connection_ioctl using wrong device - fix vidi_connection deref user ptr - fix concurrency regression with vidi_context vkms: - add configfs support for display configuration -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEEKbZHaGwW9KfbeusDHTzWXnEhr4FAmmMLAcACgkQDHTzWXnE hr7aAw//bQ2WLhXeMqWyqrPPe51l2DmWvbdwP6TKUjzMwd9+xvs6wQcSg80Mn230 0vqSpqKq2aMB6GMmz7wdHG8JgZOvO7qDf2TZodXe5lvBiAAPjzX+UE/0bIQKuhym Ufb7tqCIPsj6TpcD3ef/173x3BnVPA6Y7lS11KaaG5l01vUAVlTD1vfWGDQp/L6P 7g94cC+0+3eYZyKxE1+Rn7FDXdw08u+vtLchIoowcAHobgucZ8K/XtZZoqFFy3sj ZZN580AhyZoGcgmn2KhNvU4B+3tBFFMSVZkJm7skOO0IB2AMQGdEr0uVUDzLGc7K DrLaxYwM6HfxM4o0r0Ai0WCuoysCAJ95M2Cp58uDuNcew4lRTtIUqz32Sm2OJ8bD Z91Rvh/kOcA0Ru11Sb/kQvy9/OJ54CqojKVaUlkFo9VhHyPCPo9hjnPvaDvCt34N FmnhuVpZMWqcjjq5yO/192qpDJnm470eQExvkZ4YpgmWkekND0zwaT4PG4763dZJ juPlBQ5WtUlIzlUpRxdHE7C7ht1rWRS+HdzSYPM5aHTXDvktJvcA+1b/Jyicc+x4 QZiZ/1AC0KKlLrZxpVpEcjkPdQj2CiCXHQ+0YjDfO3cHo/55EfKj4iiARzhDzokf h7FgKwvVhc9DycSq8KPGAf09AswceGAtvB1rKk+Jh9D/GqbgGtM= =RFJ2 -----END PGP SIGNATURE----- Merge tag 'drm-next-2026-02-11' of https://gitlab.freedesktop.org/drm/kernel Pull drm updates from Dave Airlie: "Highlights: - amdgpu support for lots of new IP blocks which means newer GPUs - xe has a lot of SR-IOV and SVM improvements - lots of intel display refactoring across i915/xe - msm has more support for gen8 platforms - Given up on kgdb/kms integration, it's too hard on modern hw core: - drop kgdb support - replace system workqueue with percpu - account for property blobs in memcg - MAINTAINERS updates for xe + buddy rust: - Fix documentation for Registration constructors - Use pin_init::zeroed() for fops initialization - Annotate DRM helpers with __rust_helper - Improve safety documentation for gem::Object::new() - Update AlwaysRefCounted imports - mm: Prevent integer overflow in page_align() atomic: - add drm_device pointer to drm_private_obj - introduce gamma/degamma LUT size check buddy: - fix free_trees memory leak - prevent BUG_ON bridge: - introduce drm_bridge_unplug/enter/exit - add connector argument to .hpd_notify - lots of recounting conversions - convert rockchip inno hdmi to bridge - lontium-lt9611uxc: switch to HDMI audio helpers - dw-hdmi-qp: add support for HPD-less setups - Algoltek AG6311 support panels: - edp: CSW MNE007QB3-1, AUO B140HAN06.4, AUO B140QAX01.H - st75751: add SPI support - Sitronix ST7920, Samsung LTL106HL02 - LG LH546WF1-ED01, HannStar HSD156J - BOE NV130WUM-T08 - Innolux G150XGE-L05 - Anbernic RG-DS dma-buf: - improve sg_table debugging - add tracepoints - call clear_page instead of memset - start to introduce cgroup memory accounting in heaps - remove sysfs stats dma-fence: - add new helpers dp: - mst: avoid oob access with vcpi=0 hdmi: - limit infoframes exposure to userspace gem: - reduce page table overhead with THP - fix leak in drm_gem_get_unmapped_area gpuvm: - API sanitation for rust bindings sched: - introduce new helpers panic: - report invalid panic modes - add kunit tests i915/xe display: - Expose sharpness only if num_scalers is >= 2 - Add initial Xe3P_LPD for NVL - BMG FBC support - Add MTL+ platforms to support dpll framework _ fix DIMM_S DRM decoding on ICL - Return to using AUX interrupts - PSR/Panel replay refactoring - use consolidation HDMI tables - Xe3_LPD CD2X dividier changes xe: - vfio: add vfio_pci for intel GPU - multi queue support - dynamic pagemaps and multi-device SVM - expose temp attribs in hwmon - NO_COMPRESSION bo flag - expose MERT OA unit - sysfs survivability refactor - SRIOV PF: add MERT support - enable SR-IOV VF migration - Enable I2C/NVM on Crescent Island - Xe3p page reclaimation support - introduce SRIOV scheduler groups - add SoC remappt support in system controller - insert compiler barriers in GuC code - define NVL GuC firmware - handle GT resume failure - fix drm scheduler layering violations - enable GSC loading and PXP for PTL - disable GuC Power DCC strategy on PTL - unregister drm device on probe error i915: - move to kernel standard fault injection - bump recommended GuC version for DG2 and MTL amdgpu: - SMUIO 15.x, PSP 15.x support - IH 6.1.1/7.1 support - MMHUB 3.4/4.2 support - GC 11.5.4/12.1 support - SDMA 6.1.4/7.1/7.11.4 support - JPEG 5.3 support - UserQ updates - GC 9 gfx queue reset support - TTM memory ops parallelization - convert legacy logging to new helpers - DC analog fixes amdkfd: - GC 11.5.4/12.1 suppport - SDMA 6.1.4/7.1 support - per context support - increase kfd process hash table - Reserved SDMA rework radeon: - convert legacy logging to new helpers - use devm for i2c adapters msm: - GPU - Document a612/RGMU dt bindings - UBWC 6.0 support (for A840 / Kaanapali) - a225 support - DPU: - Switch to use virtual planes by default - Fix DSI CMD panels on DPU 3.x - Rewrite format handling to remove intermediate representation - Fix watchdog on DPU 8.x+ - Fix TE / Vsync source setting on DPU 8.x+ - Add 3D_Mux on SC7280 - Kaanapali platform support - Fix UBWC register programming - Make RM reserve DSPP-enabled mixers for CRTCs with LMs - Gamma correction support - DP: - Enable support for eDP 1.4+ link rate tables - Fix MDSS1 DP indices on SA8775P, making them to work - Fix msm_dp_ctrl_config_msa() to work with LLVM 20 - DSI: - Document QCS8300 as compatible with SA8775P - Kaanapali platform support - DSI PHY: - switch to divider_determine_rate() - MDP5: - Drop support for MSM8998, SDM660 and SDM630 (switch over to DPU) - MDSS: - Kaanapali platform support - Fixed UBWC register programming nova-core: - Prepare for Turing support. This includes parsing and handling Turing-specific firmware headers and sections as well as a Turing Falcon HAL implementation - Get rid of the Result<impl PinInit<T, E>> anti-pattern - Relocate initializer-specific code into the appropriate initializer - Use CStr::from_bytes_until_nul() to remove custom helpers - Improve handling of unexpected firmware values - Clean up redundant debug prints - Replace c_str!() with native Rust C-string literals - Update nova-core task list nova: - Align GEM object size to system page size tyr: - Use generated uAPI bindings for GpuInfo - Replace manual sleeps with read_poll_timeout() - Replace c_str!() with native Rust C-string literals - Suppress warnings for unread fields - Fix incorrect register name in print statement nouveau: - fix big page table support races in PTE management - improve reclocking on tegra 186+ amdxdna: - fix suspend race conditions - improve handling of zero tail pointers - fix cu_idx overwritten during command setup - enable hardware context priority - remove NPU2 support - update message buffer allocation requirements - update firmware version check ast: - support imported cursor buffers - big endian fixes etnaviv: - add PPU flop reset support imagination: - add AM62P support - introduce hw version checks ivpu: - implement warm boot flow panfrost: - add bo sync ioctl - add GPU_PM_RT support for RZ/G3E SoC panthor: - add bo sync ioctl - enable timestamp propagation - scheduler robustness improvements - VM termination fixes - huge page support rockchip: - RK3368 HDMI Support - get rid of atomic_check fixups - RK3506 support - RK3576/RK3588 improved HPD handling rz-du: - RZ/V2H(P) MIPI-DSI Support v3d: - fix DMA segment size - convert to new logging helpers mediatek: - move DP training to hotplug thread - convert logging to new helpers - add support for HS speed DSI - Genio 510/700/1200-EVK, Radxa NIO-12L HDMI support atmel-hlcdc: - switch to drmm resource - support nomodeset - use newer helpers hisilicon: - fix various DP bugs renesas: - fix kernel panic on reboot exynos: - fix vidi_connection_ioctl using wrong device - fix vidi_connection deref user ptr - fix concurrency regression with vidi_context vkms: - add configfs support for display configuration * tag 'drm-next-2026-02-11' of https://gitlab.freedesktop.org/drm/kernel: (1610 commits) drm/xe/pm: Disable D3Cold for BMG only on specific platforms drm/xe: Fix kerneldoc for xe_tlb_inval_job_alloc_dep drm/xe: Fix kerneldoc for xe_gt_tlb_inval_init_early drm/xe: Fix kerneldoc for xe_migrate_exec_queue drm/xe/query: Fix topology query pointer advance drm/xe/guc: Fix kernel-doc warning in GuC scheduler ABI header drm/xe/guc: Fix CFI violation in debugfs access. accel/amdxdna: Move RPM resume into job run function accel/amdxdna: Fix incorrect DPM level after suspend/resume nouveau/vmm: start tracking if the LPT PTE is valid. (v6) nouveau/vmm: increase size of vmm pte tracker struct to u32 (v2) nouveau/vmm: rewrite pte tracker using a struct and bitfields. accel/amdxdna: Fix incorrect error code returned for failed chain command accel/amdxdna: Remove hardware context status drm/bridge: imx8qxp-pixel-combiner: Fix bailout for imx8qxp_pc_bridge_probe() drm/panel: ilitek-ili9882t: Remove duplicate initializers in tianma_il79900a_dsc drm/i915/display: fix the pixel normalization handling for xe3p_lpd drm/exynos: vidi: use ctx->lock to protect struct vidi_context member variables related to memory alloc/free drm/exynos: vidi: fix to avoid directly dereferencing user pointer drm/exynos: vidi: use priv->vidi_dev for ctx lookup in vidi_connection_ioctl() ...	2026-02-11 12:55:44 -08:00
Linus Torvalds	3893854000	Changes since last update: ... - Support inode page cache sharing among filesystems - Formally separate optional encoded (aka compressed) inode layouts (and the implementations) from the EROFS core on-disk aligned plain format for future zero-trust security usage - Improve performance by caching the fact that an inode does not have a POSIX ACL - Improve LZ4 decompression error reporting - Enable LZMA by default and promote DEFLATE and Zstandard algorithms out of EXPERIMENTAL status - Switch to inode_set_cached_link() to cache symlink lengths - random bugfixes and minor cleanups -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEQ0A6bDUS9Y+83NPFUXZn5Zlu5qoFAmmJWA8RHHhpYW5nQGtl cm5lbC5vcmcACgkQUXZn5Zlu5qpKRhAAmmkeLT5vwxpdk9l5uAzz9rvpJgZzorl2 grD6jn0whzSi3BY7MiSDwcY2wl5xPuZjHRnqrcwQzsxua/Y6YJe9mIZTKhviYzuD 6A90OxO4cIseXlGL+AK+OgiFSUBvC+0AttE9napOxQmkTrBkYPDYX2IoMOxr+1DA vtsPAWmmYOeyjV+2nYT3qVYKk5LaHu+wjXsH6U7RDi1Cut3xu3FIRqtWKatdfhWs 0NSRVc9IcWyBvMRPjGwlEhGY+XW+tXa62NWNTDDTyXCMVVx4TKXMueJkHvo+ysYg i7uypDAI+JfnasrlsEuRjjvvqg+bKm+6wd1y9FIU8AefPf2kp1P5QmqmhhPv0PyI WMm6ZwQX4DTZPo6P4goxw4/SvxY8UMPHYb8/APCI7NfzG8DHCXH/OxW5yamCxL/a 6ZREjpkBtMH4lT9adCNsuKK5HQepsECCXr1BWHQDWarFFoRn0mGYIxZiHspMY2wQ SaqSkMre59S/ZstYjtYhjwyQPscxq3mejh9Cj7R37U0nhziY54EfwytvlFrTyDZ5 gg9g+/pzEdgfjJ/sVHYMo8lHhglgzFa9hTD41qeu7AeuRmJq4GAlMhnN2bmbuoDs mgBQam4+m74UyF1yk1L9ks8Ucepkgb/rdLr7u90nCg8PfhtQjyK46BnaCXwmktCz 0d7u6QZXNZ8= =REdF -----END PGP SIGNATURE----- Merge tag 'erofs-for-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs Pull erofs updates from Gao Xiang: "In this cycle, inode page cache sharing among filesystems on the same machine is now supported, which is particularly useful for high-density hosts running tens of thousands of containers. In addition, we fully isolate the EROFS core on-disk format from other optional encoded layouts since the core on-disk part is designed to be simple, effective, and secure. Users can use the core format to build unique golden immutable images and import their filesystem trees directly from raw block devices via DMA, page-mapped DAX devices, and/or file-backed mounts without having to worry about unnecessary intrinsic consistency issues found in other generic filesystems by design. However, the full vision is still working in progress and will spend more time to achieve final goals. There are other improvements and bug fixes as usual, as listed below: - Support inode page cache sharing among filesystems - Formally separate optional encoded (aka compressed) inode layouts (and the implementations) from the EROFS core on-disk aligned plain format for future zero-trust security usage - Improve performance by caching the fact that an inode does not have a POSIX ACL - Improve LZ4 decompression error reporting - Enable LZMA by default and promote DEFLATE and Zstandard algorithms out of EXPERIMENTAL status - Switch to inode_set_cached_link() to cache symlink lengths - random bugfixes and minor cleanups" * tag 'erofs-for-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs: (31 commits) erofs: fix UAF issue for file-backed mounts w/ directio option erofs: update compression algorithm status erofs: fix inline data read failure for ztailpacking pclusters erofs: avoid some unnecessary #ifdefs erofs: handle end of filesystem properly for file-backed mounts erofs: separate plain and compressed filesystems formally erofs: use inode_set_cached_link() erofs: mark inodes without acls in erofs_read_inode() erofs: implement .fadvise for page cache share erofs: support compressed inodes for page cache share erofs: support unencoded inodes for page cache share erofs: pass inode to trace_erofs_read_folio erofs: introduce the page cache share feature erofs: using domain_id in the safer way erofs: add erofs_inode_set_aops helper to set the aops erofs: support user-defined fingerprint name erofs: decouple `struct erofs_anon_fs_type` fs: Export alloc_empty_backing_file erofs: tidy up erofs_init_inode_xattrs() erofs: add missing documentation about `directio` mount option ...	2026-02-09 16:08:40 -08:00
Linus Torvalds	74554251df	vfs-7.0-rc1.nonblocking_timestamps ... Please consider pulling these changes from the signed vfs-7.0-rc1.nonblocking_timestamps tag. Thanks! Christian -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCaYX49gAKCRCRxhvAZXjc oqNMAQCjHw9iwYDu63n96QAipWopJb8onqc0rTEvi0OOl1zDNwEAufN3EqTzV3uQ JbNgSwBWD/+ICd2aUOuAX0GgU6teyAQ= =lJlI -----END PGP SIGNATURE----- Merge tag 'vfs-7.0-rc1.nonblocking_timestamps' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Pull vfs timestamp updates from Christian Brauner: "This contains the changes to support non-blocking timestamp updates. Since commit 66fa3cedf1 ("fs: Add async write file modification handling") file_update_time_flags() unconditionally returns -EAGAIN when any timestamp needs updating and IOCB_NOWAIT is set. This makes non-blocking direct writes impossible on file systems with granular enough timestamps, which in practice means all of them. This reworks the timestamp update path to propagate IOCB_NOWAIT through ->update_time so that file systems which can update timestamps without blocking are no longer penalized. With that groundwork in place, the core change passes IOCB_NOWAIT into ->update_time and returns -EAGAIN only when the file system indicates it would block. XFS implements non-blocking timestamp updates by using the new ->sync_lazytime and open-coding generic_update_time without the S_NOWAIT check, since the lazytime path through the generic helpers can never block in XFS" * tag 'vfs-7.0-rc1.nonblocking_timestamps' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: xfs: enable non-blocking timestamp updates xfs: implement ->sync_lazytime fs: refactor file_update_time_flags fs: add support for non-blocking timestamp updates fs: add a ->sync_lazytime method fs: factor out a sync_lazytime helper fs: refactor ->update_time handling fat: cleanup the flags for fat_truncate_time nfs: split nfs_update_timestamps fs: allow error returns from generic_update_time fs: remove inode_update_time	2026-02-09 11:25:01 -08:00
Tvrtko Ursulin	62918542b7	dma-fence: Fix sparse warnings due __rcu annotations ... __rcu annotations on the return types from dma_fence_driver_name() and dma_fence_timeline_name() cause sparse to complain because both the constant signaled strings, and the strings return by the dma_fence_ops are not __rcu annotated. For a simple fix it is easiest to cast them with __rcu added and undo the smarts from the tracpoints side of things. There is no functional change since the rest is left in place. Later we can consider changing the dma_fence_ops return types too, and handle all the individual drivers which define them. Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Fixes: 506aa8b02a ("dma-fence: Add safe access helpers and document the rules") Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202506162214.1eA69hLe-lkp@intel.com/ Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/r/20250616155952.24259-1-tvrtko.ursulin@igalia.com Signed-off-by: Christian König <christian.koenig@amd.com>	2026-02-09 14:05:20 +01:00
Linus Torvalds	23b0d2f7c2	dma-mapping fixes for Linux 6.19 ... Two minor fixes for DMA-mapping subsystem: - check for the rare case of the allocation failure of the global CMA pool (Shanker Donthineni) - avoid perf buffer overflow when tracing large scatter-gather lists (Deepanshu Kartikey) -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSrngzkoBtlA8uaaJ+Jp1EFxbsSRAUCaYXTzAAKCRCJp1EFxbsS REbUAP40hTgNNGjlbV/b6nES4P/SuZ5a8p05+YWF7bTOVf/pMwEA8EHFz5DLsKeS 1bX7/X2wzEYOyJ7v1S+PYxIswn9A5AY= =2IQo -----END PGP SIGNATURE----- Merge tag 'dma-mapping-6.19-2026-02-06' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux Pull dma-mapping fixes from Marek Szyprowski: "Two minor fixes for the DMA-mapping subsystem: - check for the rare case of the allocation failure of the global CMA pool (Shanker Donthineni) - avoid perf buffer overflow when tracing large scatter-gather lists (Deepanshu Kartikey)" * tag 'dma-mapping-6.19-2026-02-06' of git://git.kernel.org/pub/scm/linux/kernel/git/mszyprowski/linux: dma: contiguous: Check return value of dma_contiguous_reserve_area() tracing/dma: Cap dma_map_sg tracepoint arrays to prevent buffer overflow	2026-02-06 10:27:42 -08:00
Paolo Abeni	2002286e68	trace: mptcp: add mptcp_rcvbuf_grow tracepoint ... Similar to tcp, provide a new tracepoint to better understand mptcp_rcv_space_adjust() behavior, which presents many artifacts. Note that the used format string is so long that I preferred wrap it, contrary to guidance for quoted strings. Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260203-net-next-mptcp-misc-feat-6-20-v1-4-31ec8bfc56d1@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2026-02-04 18:45:09 -08:00
Deepanshu Kartikey	daafcc0ef0	tracing/dma: Cap dma_map_sg tracepoint arrays to prevent buffer overflow ... The dma_map_sg tracepoint can trigger a perf buffer overflow when tracing large scatter-gather lists. With devices like virtio-gpu creating large DRM buffers, nents can exceed 1000 entries, resulting in: phys_addrs: 1000 * 8 bytes = 8,000 bytes dma_addrs: 1000 * 8 bytes = 8,000 bytes lengths: 1000 * 4 bytes = 4,000 bytes Total: ~20,000 bytes This exceeds PERF_MAX_TRACE_SIZE (8192 bytes), causing: WARNING: CPU: 0 PID: 5497 at kernel/trace/trace_event_perf.c:405 perf buffer not large enough, wanted 24620, have 8192 Cap all three dynamic arrays at 128 entries using min() in the array size calculation. This ensures arrays are only as large as needed (up to the cap), avoiding unnecessary memory allocation for small operations while preventing overflow for large ones. The tracepoint now records the full nents/ents counts and a truncated flag so users can see when data has been capped. Changes in v2: - Use min(nents, DMA_TRACE_MAX_ENTRIES) for dynamic array sizing instead of fixed DMA_TRACE_MAX_ENTRIES allocation (feedback from Steven Rostedt) - This allocates only what's needed up to the cap, avoiding waste for small operations Reported-by: syzbot+28cea38c382fd15e751a@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=28cea38c382fd15e751a Tested-by: syzbot+28cea38c382fd15e751a@syzkaller.appspotmail.com Signed-off-by: Deepanshu Kartikey <Kartikey406@gmail.com> Reviwed-by: Sean Anderson <sean.anderson@linux.dev> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://lore.kernel.org/r/20260130155215.69737-1-kartikey406@gmail.com	2026-02-02 08:41:17 +01:00
Chen Ridong	5eab8c588b	cgroup: increase maximum subsystem count from 16 to 32 ... The current cgroup subsystem limit of 16 is insufficient, as the number of existing subsystems has already reached this limit. When adding a new subsystem that is not yet in the mainline kernel, building with `make allmodconfig` requires first bypassing the `BUILD_BUG_ON(CGROUP_SUBSYS_COUNT > 16)` restriction to allow compilation to succeed. However, the kernel still fails to boot afterward. This patch increases the maximum number of supported cgroup subsystems from 16 to 32, providing enough room for future subsystem additions. Signed-off-by: Chen Ridong <chenridong@huawei.com> Acked-by: Waiman Long <longman@redhat.com> Tested-by: JP Kobryn <inwardvessel@gmail.com> Acked-by: JP Kobryn <inwardvessel@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>	2026-02-01 06:34:15 -10:00
Jiayuan Chen	a45088376d	mm/vmscan: add tracepoint and reason for kswapd_failures reset ... Currently, kswapd_failures is reset in multiple places (kswapd, direct reclaim, PCP freeing, memory-tiers), but there's no way to trace when and why it was reset, making it difficult to debug memory reclaim issues. This patch: 1. Introduce kswapd_clear_hopeless() as a wrapper function to centralize kswapd_failures reset logic. 2. Introduce kswapd_test_hopeless() to encapsulate hopeless node checks, replacing all open-coded kswapd_failures comparisons. 3. Add kswapd_clear_hopeless_reason enum to distinguish reset sources: - KSWAPD_CLEAR_HOPELESS_KSWAPD: reset from kswapd context - KSWAPD_CLEAR_HOPELESS_DIRECT: reset from direct reclaim - KSWAPD_CLEAR_HOPELESS_PCP: reset from PCP page freeing - KSWAPD_CLEAR_HOPELESS_OTHER: reset from other paths 4. Add tracepoints for better observability: - mm_vmscan_kswapd_clear_hopeless: traces each reset with reason - mm_vmscan_kswapd_reclaim_fail: traces each kswapd reclaim failure Test results: $ trace-cmd record -e vmscan:mm_vmscan_kswapd_clear_hopeless -e vmscan:mm_vmscan_kswapd_reclaim_fail $ # generate memory pressure $ trace-cmd report cpus=4 kswapd0-71 [000] 27.216563: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=1 kswapd0-71 [000] 27.217169: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=2 kswapd0-71 [000] 27.217764: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=3 kswapd0-71 [000] 27.218353: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=4 kswapd0-71 [000] 27.218993: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=5 kswapd0-71 [000] 27.219744: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=6 kswapd0-71 [000] 27.220488: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=7 kswapd0-71 [000] 27.221206: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=8 kswapd0-71 [000] 27.221806: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=9 kswapd0-71 [000] 27.222634: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=10 kswapd0-71 [000] 27.223286: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=11 kswapd0-71 [000] 27.223894: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=12 kswapd0-71 [000] 27.224712: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=13 kswapd0-71 [000] 27.225424: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=14 kswapd0-71 [000] 27.226082: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=15 kswapd0-71 [000] 27.226810: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=16 kswapd1-72 [002] 27.386869: mm_vmscan_kswapd_reclaim_fail: nid=1 failures=1 kswapd1-72 [002] 27.387435: mm_vmscan_kswapd_reclaim_fail: nid=1 failures=2 kswapd1-72 [002] 27.388016: mm_vmscan_kswapd_reclaim_fail: nid=1 failures=3 kswapd1-72 [002] 27.388586: mm_vmscan_kswapd_reclaim_fail: nid=1 failures=4 kswapd1-72 [002] 27.389155: mm_vmscan_kswapd_reclaim_fail: nid=1 failures=5 kswapd1-72 [002] 27.389723: mm_vmscan_kswapd_reclaim_fail: nid=1 failures=6 kswapd1-72 [002] 27.390292: mm_vmscan_kswapd_reclaim_fail: nid=1 failures=7 kswapd1-72 [002] 27.392364: mm_vmscan_kswapd_reclaim_fail: nid=1 failures=8 kswapd1-72 [002] 27.392934: mm_vmscan_kswapd_reclaim_fail: nid=1 failures=9 kswapd1-72 [002] 27.393504: mm_vmscan_kswapd_reclaim_fail: nid=1 failures=10 kswapd1-72 [002] 27.394073: mm_vmscan_kswapd_reclaim_fail: nid=1 failures=11 kswapd1-72 [002] 27.394899: mm_vmscan_kswapd_reclaim_fail: nid=1 failures=12 kswapd1-72 [002] 27.395472: mm_vmscan_kswapd_reclaim_fail: nid=1 failures=13 kswapd1-72 [002] 27.396055: mm_vmscan_kswapd_reclaim_fail: nid=1 failures=14 kswapd1-72 [002] 27.396628: mm_vmscan_kswapd_reclaim_fail: nid=1 failures=15 kswapd1-72 [002] 27.397199: mm_vmscan_kswapd_reclaim_fail: nid=1 failures=16 kworker/u18:0-40 [002] 27.410151: mm_vmscan_kswapd_clear_hopeless: nid=0 reason=DIRECT kswapd0-71 [000] 27.439454: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=1 kswapd0-71 [000] 27.440048: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=2 kswapd0-71 [000] 27.440634: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=3 kswapd0-71 [000] 27.441211: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=4 kswapd0-71 [000] 27.441787: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=5 kswapd0-71 [000] 27.442363: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=6 kswapd0-71 [000] 27.443030: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=7 kswapd0-71 [000] 27.443725: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=8 kswapd0-71 [000] 27.444315: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=9 kswapd0-71 [000] 27.444898: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=10 kswapd0-71 [000] 27.445476: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=11 kswapd0-71 [000] 27.446053: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=12 kswapd0-71 [000] 27.446646: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=13 kswapd0-71 [000] 27.447230: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=14 kswapd0-71 [000] 27.447812: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=15 kswapd0-71 [000] 27.448391: mm_vmscan_kswapd_reclaim_fail: nid=0 failures=16 ann-423 [003] 28.028285: mm_vmscan_kswapd_clear_hopeless: nid=0 reason=PCP Link: https://lkml.kernel.org/r/20260120024402.387576-3-jiayuan.chen@linux.dev Signed-off-by: Jiayuan Chen <jiayuan.chen@shopee.com> Signed-off-by: Jiayuan Chen <jiayuan.chen@linux.dev> Acked-by: Shakeel Butt <shakeel.butt@linux.dev> Suggested-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> [tracing] Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Brendan Jackman <jackmanb@google.com> Cc: David Hildenbrand <david@kernel.org> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Qi Zheng <zhengqi.arch@bytedance.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Wei Xu <weixugc@google.com> Cc: Yuanchu Xie <yuanchu@google.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2026-01-31 14:22:38 -08:00
Chao Yu	bc367775f6	f2fs: introduce trace_f2fs_priority_update ... This patch introduces two new tracepoints for debug purpose. Signed-off-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>	2026-01-31 03:24:55 +00:00
Steven Rostedt	a46023d561	tracing: Guard __DECLARE_TRACE() use of __DO_TRACE_CALL() with SRCU-fast ... The current use of guard(preempt_notrace)() within __DECLARE_TRACE() to protect invocation of __DO_TRACE_CALL() means that BPF programs attached to tracepoints are non-preemptible. This is unhelpful in real-time systems, whose users apparently wish to use BPF while also achieving low latencies. (Who knew?) One option would be to use preemptible RCU, but this introduces many opportunities for infinite recursion, which many consider to be counterproductive, especially given the relatively small stacks provided by the Linux kernel. These opportunities could be shut down by sufficiently energetic duplication of code, but this sort of thing is considered impolite in some circles. Therefore, use the shiny new SRCU-fast API, which provides somewhat faster readers than those of preemptible RCU, at least on Paul E. McKenney's laptop, where task_struct access is more expensive than access to per-CPU variables. And SRCU-fast provides way faster readers than does SRCU, courtesy of being able to avoid the read-side use of smp_mb(). Also, it is quite straightforward to create srcu_read_{,un}lock_fast_notrace() functions. Link: https://lore.kernel.org/all/20250613152218.1924093-1-bigeasy@linutronix.de/ Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Alexei Starovoitov <ast@kernel.org> Link: https://patch.msgid.link/20260126231256.499701982@kernel.org Co-developed-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>	2026-01-30 10:44:11 -05:00
Steven Rostedt	16718274ee	tracing: perf: Have perf tracepoint callbacks always disable preemption ... In preparation to convert protection of tracepoints from being protected by a preempt disabled section to being protected by SRCU, have all the perf callbacks disable preemption as perf expects preemption to be disabled when processing tracepoints. While at it, convert the perf system call callback preempt_disable() to a guard(preempt). Link: https://lore.kernel.org/all/20250613152218.1924093-1-bigeasy@linutronix.de/ Link: https://patch.msgid.link/20260108220550.2f6638f3@fedora Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: "Paul E. McKenney" <paulmck@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Alexei Starovoitov <ast@kernel.org> Link: https://patch.msgid.link/20260126231256.174621257@kernel.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>	2026-01-30 10:43:35 -05:00
Andrey Albershteyn	fa19d42cc7	fsverity: add tracepoints ... fs-verity previously had debug printk but it was removed. This patch adds trace points to similar places, as a better alternative. Signed-off-by: Andrey Albershteyn <aalbersh@kernel.org> Reviewed-by: Darrick J. Wong <djwong@kernel.org> [djwong: fix formatting] Signed-off-by: Darrick J. Wong <djwong@kernel.org> Link: https://patch.msgid.link/20260126115658.27656-3-aalbersh@kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org>	2026-01-29 16:00:57 +01:00
Dave Airlie	6704d98a4f	Linux 6.19-rc7 ... -----BEGIN PGP SIGNATURE----- iQFSBAABCgA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAml2lQweHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiG0dcH/2yLU3IKlHSSgEDL Qq3oBuRK/zoVOdy+CM+TmTdl2d1LnBd8J547xFStB7kVGf5mEkdFZdHLBSHRnKDf ia1SGec06kyLpRX6x5T6FsfwOhkBmVsp59X0coM57QWxxenybugtzPvDO2TQ8/G4 buixJI0jJVgwRwXNzWB4n2W6FxNGui2A7gEN2mjtvkM2t/aDkiDjEqB8ve0pZJX9 4EWhxOgRFzwWgkd/bY+4wgXVXEt3GtI+3VvNncRqLIO00A/AnZOYmH4S2RQUDszD IbyDscYYxloZcZMDXc3PN2WgD9DCGKuP3GpJGsOHbl0DN6JkqI9nwGsOFZKGVOeF vbajwPE= =iAOa -----END PGP SIGNATURE----- BackMerge tag 'v6.19-rc7' into drm-next Linux 6.19-rc7 This is needed for msm and rust trees. Signed-off-by: Dave Airlie <airlied@redhat.com>	2026-01-28 12:44:28 +10:00
Shivank Garg	5173ae0a06	mm/khugepaged: map dirty/writeback pages failures to EAGAIN ... Patch series "mm/khugepaged: fix dirty page handling for MADV_COLLAPSE", v5. MADV_COLLAPSE on file-backed mappings fails with -EINVAL when TEXT pages are dirty. This affects scenarios like package/container updates or executing binaries immediately after writing them, etc. The issue is that collapse_file() triggers async writeback and returns SCAN_FAIL (maps to -EINVAL), expecting khugepaged to revisit later. But MADV_COLLAPSE is synchronous and userspace expects immediate success or a clear retry signal. Reproduction: - Compile or copy 2MB-aligned executable to XFS/ext4 FS - Call MADV_COLLAPSE on .text section - First call fails with -EINVAL (text pages dirty from copy) - Second call succeeds (async writeback completed) Issue Report: https://lore.kernel.org/all/4e26fe5e-7374-467c-a333-9dd48f85d7cc@amd.com This patch (of 2): When collapse_file encounters dirty or writeback pages in file-backed mappings, it currently returns SCAN_FAIL which maps to -EINVAL. This is misleading as EINVAL suggests invalid arguments, whereas dirty/writeback pages represent transient conditions that may resolve on retry. Introduce SCAN_PAGE_DIRTY_OR_WRITEBACK to cover both dirty and writeback states, mapping it to -EAGAIN. For MADV_COLLAPSE, this provides userspace with a clear signal that retry may succeed after writeback completes. For khugepaged, this is harmless as it will naturally revisit the range during periodic scans after async writeback completes. Link: https://lkml.kernel.org/r/20260118190939.8986-2-shivankg@amd.com Link: https://lkml.kernel.org/r/20260118190939.8986-4-shivankg@amd.com Fixes: 34488399fa ("mm/madvise: add file and shmem support to MADV_COLLAPSE") Signed-off-by: Shivank Garg <shivankg@amd.com> Reported-by: Branden Moore <Branden.Moore@amd.com> Closes: https://lore.kernel.org/all/4e26fe5e-7374-467c-a333-9dd48f85d7cc@amd.com Reviewed-by: Dev Jain <dev.jain@arm.com> Reviewed-by: Lance Yang <lance.yang@linux.dev> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: wang lian <lianux.mm@gmail.com> Acked-by: David Hildenbrand (Red Hat) <david@kernel.org> Cc: Barry Song <baohua@kernel.org> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Nico Pache <npache@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Zach O'Keefe <zokeefe@google.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2026-01-26 20:02:12 -08:00
Aaron Tomlin	2cddfc2e8f	tracing: Add bitmask-list option for human-readable bitmask display ... Add support for displaying bitmasks in human-readable list format (e.g., 0,2-5,7) in addition to the default hexadecimal bitmap representation. This is particularly useful when tracing CPU masks and other large bitmasks where individual bit positions are more meaningful than their hexadecimal encoding. When the "bitmask-list" option is enabled, the printk "%*pbl" format specifier is used to render bitmasks as comma-separated ranges, making trace output easier to interpret for complex CPU configurations and large bitmask values. Link: https://patch.msgid.link/20251226160724.2246493-2-atomlin@atomlin.com Signed-off-by: Aaron Tomlin <atomlin@atomlin.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>	2026-01-26 17:00:50 -05:00
Hongbo Li	69368d2ded	erofs: pass inode to trace_erofs_read_folio ... The trace_erofs_read_folio accesses inode information through folio, but this method fails if the real inode is not associated with the folio(such as in the upcoming page cache sharing case). Therefore, we pass the real inode to it so that the inode information can be printed out in that case. Signed-off-by: Hongbo Li <lihongbo22@huawei.com> Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com> Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>	2026-01-23 20:02:09 +08:00
Jakub Kicinski	9abf22075d	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net ... Cross-merge networking fixes after downstream PR (net-6.19-rc7). Conflicts: drivers/net/ethernet/huawei/hinic3/hinic3_irq.c b35a6fd37a ("hinic3: Add adaptive IRQ coalescing with DIM") fb2bb2a1eb ("hinic3: Fix netif_queue_set_napi queue_index input parameter error") https://lore.kernel.org/fc0a7fdf08789a52653e8ad05281a0a849e79206.1768915707.git.zhuyikai1@h-partners.com drivers/net/wireless/ath/ath12k/mac.c drivers/net/wireless/ath/ath12k/wifi7/hw.c 3170757210 ("wifi: ath12k: Fix wrong P2P device link id issue") c26f294fef ("wifi: ath12k: Move ieee80211_ops callback to the arch specific module") https://lore.kernel.org/20260114123751.6a208818@canb.auug.org.au Adjacent changes: drivers/net/wireless/ath/ath12k/mac.c 8b8d6ee53d ("wifi: ath12k: Fix scan state stuck in ABORTING after cancel_remain_on_channel") 914c890d3b ("wifi: ath12k: Add framework for hardware specific ieee80211_ops registration") Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2026-01-22 20:14:36 -08:00
Dave Airlie	b2c6627e40	drm-misc-next for 6.20: ... Core Changes: - buddy: Fix free_trees memory leak, prevent a BUG_ON - dma-buf: Start to introduce cgroup memory accounting in heaps, Remove sysfs stats, add new tracepoints - hdmi: Limit infoframes exposure to userspace based on driver capabilities - property: Account for property blobs in memcg Driver Changes: - atmel-hlcdc: Switch to drmm resources, Support nomodeset parameter, various patches to use newish helpers and fix memory safety bugs - hisilicon: Fix various DisplayPort related bugs - imagination: Introduce hardware version checks - renesas: Fix kernel panic on reboot - rockchip: Fix RK3576 HPD interrupt handling, Improve RK3588 HPD interrupt handling - v3d: Convert to drm logging helpers - bridge: - Continuation of the refcounting effort - new bridge: Algoltek AG6311 - panel: - new panel: Anbernic RG-DS -----BEGIN PGP SIGNATURE----- iJUEABMJAB0WIQTkHFbLp4ejekA/qfgnX84Zoj2+dgUCaXHk5wAKCRAnX84Zoj2+ dvgLAYCWgsKoqTMt0VATQzUyuOzkJwszjcBgqcd1NRXbUHacYEEA3+1FO00wWUJc CVsB7tcBgKjy8/fuPR/ZP6Xk4ipZnE/fyW+OQ++mo4gLMipGzrcT6G2eJhtubMlB FobrkI5Z4Q== =pRaO -----END PGP SIGNATURE----- Merge tag 'drm-misc-next-2026-01-22' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next drm-misc-next for 6.20: Core Changes: - buddy: Fix free_trees memory leak, prevent a BUG_ON - dma-buf: Start to introduce cgroup memory accounting in heaps, Remove sysfs stats, add new tracepoints - hdmi: Limit infoframes exposure to userspace based on driver capabilities - property: Account for property blobs in memcg Driver Changes: - atmel-hlcdc: Switch to drmm resources, Support nomodeset parameter, various patches to use newish helpers and fix memory safety bugs - hisilicon: Fix various DisplayPort related bugs - imagination: Introduce hardware version checks - renesas: Fix kernel panic on reboot - rockchip: Fix RK3576 HPD interrupt handling, Improve RK3588 HPD interrupt handling - v3d: Convert to drm logging helpers - bridge: - Continuation of the refcounting effort - new bridge: Algoltek AG6311 - panel: - new panel: Anbernic RG-DS Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maxime Ripard <mripard@redhat.com> Link: https://patch.msgid.link/20260122-antique-sexy-junglefowl-1bc5a8@houat	2026-01-23 12:45:15 +10:00
Eric Dumazet	a4674aa58b	tcp: preserve const qualifier in tcp_rsk() and inet_rsk() ... We can change tcp_rsk() and inet_rsk() to propagate their argument const qualifier thanks to container_of_const(). Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com> Link: https://patch.msgid.link/20260120125353.1470456-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2026-01-21 19:20:04 -08:00
gaoxiang17	3b3ddafde1	dma-buf: add some tracepoints to debug. ... Since we can only inspect dmabuf by iterating over process FDs or the dmabuf_list, we need to add our own tracepoints to track its status in real time in production. For example: binder:3016_1-3102 [006] ...1. 255.126521: dma_buf_export: exp_name=qcom,system size=12685312 ino=2738 binder:3016_1-3102 [006] ...1. 255.126528: dma_buf_fd: exp_name=qcom,system size=12685312 ino=2738 fd=8 binder:3016_1-3102 [006] ...1. 255.126642: dma_buf_mmap_internal: exp_name=qcom,system size=28672 ino=2739 kworker/6:1-86 [006] ...1. 255.127194: dma_buf_put: exp_name=qcom,system size=12685312 ino=2738 RenderThread-9293 [006] ...1. 316.618179: dma_buf_get: exp_name=qcom,system size=12771328 ino=2762 fd=176 RenderThread-9293 [006] ...1. 316.618195: dma_buf_dynamic_attach: exp_name=qcom,system size=12771328 ino=2762 attachment:ffffff880a18dd00 is_dynamic=0 dev_name=kgsl-3d0 RenderThread-9293 [006] ...1. 318.878220: dma_buf_detach: exp_name=qcom,system size=12771328 ino=2762 attachment:ffffff880a18dd00 is_dynamic=0 dev_name=kgsl-3d0 Signed-off-by: Xiang Gao <gaoxiang17@xiaomi.com> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/r/20260109115411.115270-1-gxxa03070307@gmail.com	2026-01-21 13:27:54 +01:00
Johannes Weiner	64dd89ae01	mm/block/fs: remove laptop_mode ... Laptop mode was introduced to save battery, by delaying and consolidating writes and thereby maximize the time rotating hard drives wouldn't have to spin. Luckily, rotating hard drives, with their high spin-up times and power draw, are a thing of the past for battery-powered devices. Reclaim has also since changed to not write single filesystem pages anymore, and regular filesystem writeback is lumpy by design. The juice doesn't appear worth the squeeze anymore. The footprint of the feature is small, but nevertheless it's a complicating factor in mm, block, filesystems. Developers don't think about it, and it likely hasn't been tested with new reclaim and writeback changes in years. Let's sunset it. Keep the sysctl with a deprecation warning around for a few more cycles, but remove all functionality behind it. [akpm@linux-foundation.org: fix Documentation/admin-guide/laptops/index.rst] Link: https://lkml.kernel.org/r/20251216185201.GH905277@cmpxchg.org Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Suggested-by: Christoph Hellwig <hch@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Jens Axboe <axboe@kernel.dk> Reviewed-by: Shakeel Butt <shakeel.butt@linux.dev> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Deepanshu Kartikey <kartikey406@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2026-01-20 19:24:47 -08:00
SeongJae Park	804c26b961	mm/damon/core: add trace point for damos stat per apply interval ... DAMON users can read DAMOS stats via DAMON sysfs interface. It enables efficient, simple and flexible usages of the stats. Especially for systems not having advanced tools like perf or bpftrace, that can be useful. But if the advanced tools are available, exposing the stats via tracepoint can reduce unnecessary reimplementation of the wheels. Add a new tracepoint for DAMOS stats, namely damos_stat_after_apply_interval. The tracepoint is triggered for each scheme's apply interval and exposes the whole stat values. If the user needs sub-apply interval information for any chance, damos_before_apply tracepoint could be used. Link: https://lkml.kernel.org/r/20251216080128.42991-13-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2026-01-20 19:24:46 -08:00
Li Chen	690558921d	ext4: mark move extents fast-commit ineligible ... Fast commits only log operations that have dedicated replay support. EXT4_IOC_MOVE_EXT swaps extents between regular files and may copy data, rewriting the affected inodes' block mapping layout without going through the fast commit tracking paths. In practice these operations are rare and usually followed by further updates, but mixing them into a fast commit makes the overall semantics harder to reason about and risks replay gaps if new call sites appear. Teach ext4 to mark the filesystem fast-commit ineligible for the journal transactions used by move_extent_per_page() when EXT4_IOC_MOVE_EXT runs. This forces those transactions to fall back to a full commit, ensuring that these multi-inode extent swaps are captured by the normal journal rather than partially encoded in fast commit TLVs. This change should not affect common workloads but makes online defragmentation safer and easier to reason about under fast commit. Testing: 1. prepare: dd if=/dev/zero of=/root/fc_move.img bs=1M count=0 seek=256 mkfs.ext4 -O fast_commit -F /root/fc_move.img mkdir -p /mnt/fc_move && mount -t ext4 -o loop \ /root/fc_move.img /mnt/fc_move 2. Created two files, ran EXT4_IOC_MOVE_EXT via e4defrag, and checked the ineligible reason statistics: fallocate -l 64M /mnt/fc_move/file1 cp /mnt/fc_move/file1 /mnt/fc_move/file2 e4defrag /mnt/fc_move/file1 cat /proc/fs/ext4/loop0/fc_info shows "Move extents": > 0 and fc stats ineligible > 0. Signed-off-by: Li Chen <me@linux.beauty> Link: https://patch.msgid.link/20251211115146.897420-4-me@linux.beauty Signed-off-by: Theodore Ts'o <tytso@mit.edu>	2026-01-19 19:26:35 -05:00
Li Chen	16d43b9748	ext4: mark fs-verity enable fast-commit ineligible ... Fast commits only log operations that have dedicated replay support. Enabling fs-verity builds a Merkle tree and updates inode and orphan state in ways that are not described by the fast commit replay tags. In practice these operations are rare and usually followed by further updates, but mixing them into a fast commit makes the overall semantics harder to reason about and risks replay gaps if new call sites appear. Teach ext4 to mark the filesystem fast-commit ineligible when ext4_end_enable_verity() starts its journal transaction. This forces that transaction to fall back to a full commit, ensuring that the fs-verity enable changes are captured by the normal journal rather than partially encoded in fast commit TLVs. This change should not affect common workloads but makes fs-verity enable safer and easier to reason about under fast commit. Testing: 1. prepare: dd if=/dev/zero of=/root/fc_verity.img bs=1M count=0 seek=128 mkfs.ext4 -O fast_commit,verity -F /root/fc_verity.img mkdir -p /mnt/fc_verity && mount -t ext4 -o loop /root/fc_verity.img /mnt/fc_verity 2. Enabled fs-verity on a file and verified reason accounting: echo "data" > /mnt/fc_verity/verityfile /root/enable_verity /mnt/fc_verity/verityfile sync tail -n 1 /proc/fs/ext4/loop0/fc_info "fs-verity enable": 1 3. Enabled fs-verity on a second file, fsynced it, and checked that the ineligible commit counter is updated too: echo "data2" > /mnt/fc_verity/verityfile2 /root/enable_verity /mnt/fc_verity/verityfile2 /root/fsync_file /mnt/fc_verity/verityfile2 sync /proc/fs/ext4/loop0/fc_info shows "fs-verity enable" incremented and fc stats ineligible increased accordingly. Signed-off-by: Li Chen <me@linux.beauty> Link: https://patch.msgid.link/20251211115146.897420-3-me@linux.beauty Signed-off-by: Theodore Ts'o <tytso@mit.edu>	2026-01-19 19:26:35 -05:00
Li Chen	87e79fa122	ext4: mark inode format migration fast-commit ineligible ... Fast commits only log operations that have dedicated replay support. Inode format migration (indirect<->extent layout changes via EXT4_IOC_MIGRATE or toggling EXT4_EXTENTS_FL) rewrites the block mapping representation without going through the fast commit tracking paths. In practice these migrations are rare and usually followed by further updates, but mixing them into a fast commit makes the overall semantics harder to reason about and risks replay gaps if new call sites appear. Teach ext4 to mark the filesystem fast-commit ineligible when ext4_ext_migrate() or ext4_ind_migrate() start their journal transactions. This forces those transactions to fall back to a full commit, ensuring that the entire inode layout change is captured by the normal journal rather than partially encoded in fast commit TLVs. This change should not affect common workloads but makes format migrations safer and easier to reason about under fast commit. Testing: 1. prepare: dd if=/dev/zero of=/root/fc.img bs=1M count=0 seek=128 mkfs.ext4 -O fast_commit -F /root/fc.img mkdir -p /mnt/fc && mount -t ext4 -o loop /root/fc.img /mnt/fc 2. Created a test file and toggled the extents flag to exercise both ext4_ind_migrate() and ext4_ext_migrate(): touch /mnt/fc/migtest chattr -e /mnt/fc/migtest chattr +e /mnt/fc/migtest 3. Verified fast-commit ineligible statistics: tail -n 1 /proc/fs/ext4/loop0/fc_info "Inode format migration": 2 Signed-off-by: Li Chen <me@linux.beauty> Link: https://patch.msgid.link/20251211115146.897420-2-me@linux.beauty Signed-off-by: Theodore Ts'o <tytso@mit.edu>	2026-01-19 19:26:35 -05:00
David Howells	2c28769a51	rxrpc: Fix recvmsg() unconditional requeue ... If rxrpc_recvmsg() fails because MSG_DONTWAIT was specified but the call at the front of the recvmsg queue already has its mutex locked, it requeues the call - whether or not the call is already queued. The call may be on the queue because MSG_PEEK was also passed and so the call was not dequeued or because the I/O thread requeued it. The unconditional requeue may then corrupt the recvmsg queue, leading to things like UAFs or refcount underruns. Fix this by only requeuing the call if it isn't already on the queue - and moving it to the front if it is already queued. If we don't queue it, we have to put the ref we obtained by dequeuing it. Also, MSG_PEEK doesn't dequeue the call so shouldn't call rxrpc_notify_socket() for the call if we didn't use up all the data on the queue, so fix that also. Fixes: 540b1c48c3 ("rxrpc: Fix deadlock between call creation and sendmsg/recvmsg") Reported-by: Faith <faith@zellic.io> Reported-by: Pumpkin Chang <pumpkin@devco.re> Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Marc Dionne <marc.dionne@auristor.com> cc: Nir Ohfeld <niro@wiz.io> cc: Willy Tarreau <w@1wt.eu> cc: Simon Horman <horms@kernel.org> cc: linux-afs@lists.infradead.org cc: stable@kernel.org Link: https://patch.msgid.link/95163.1768428203@warthog.procyon.org.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>	2026-01-19 10:07:06 -08:00
Christoph Hellwig	188344c8ac	fs: factor out a sync_lazytime helper ... Centralize how we synchronize a lazytime update into the actual on-disk timestamp into a single helper. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://patch.msgid.link/20260108141934.2052404-7-hch@lst.de Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org>	2026-01-12 14:01:33 +01:00
Chao Yu	67972c2b89	f2fs: trace elapsed time for io_rwsem lock ... Use f2fs_{down,up}_{read,write}_trace for io_rwsem to trace lock elapsed time. Signed-off-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>	2026-01-07 03:17:07 +00:00
Chao Yu	ce9fe67c9c	f2fs: trace elapsed time for cp_global_sem lock ... Use f2fs_{down,up}_write_trace for cp_global_sem to trace lock elapsed time. Signed-off-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>	2026-01-07 03:17:07 +00:00
Chao Yu	e605302c14	f2fs: trace elapsed time for gc_lock lock ... Use f2fs_{down,up}_write_trace for gc_lock to trace lock elapsed time. Signed-off-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>	2026-01-07 03:17:07 +00:00
Chao Yu	bb28b66875	f2fs: trace elapsed time for node_write lock ... Use f2fs_{down,up}_read_trace for node_write to trace lock elapsed time. Signed-off-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>	2026-01-07 03:17:06 +00:00
Chao Yu	f9f9360251	f2fs: trace elapsed time for node_change lock ... Use f2fs_{down,up}_read_trace for node_change to trace lock elapsed time. Signed-off-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>	2026-01-07 03:17:06 +00:00
Chao Yu	66e9e0d55d	f2fs: trace elapsed time for cp_rwsem lock ... Use f2fs_{down,up}_read_trace for cp_rwsem to trace lock elapsed time. Signed-off-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>	2026-01-07 03:17:06 +00:00
Chao Yu	79b3cebc70	f2fs: add lock elapsed time trace facility for f2fs rwsemphore ... This patch adds lock elapsed time trace facility for f2fs rwsemphore. If total elapsed time of critical region covered by lock exceeds a threshold, it will print tracepoint to dump information of lock related context, including: - thread information - CPU/IO priority - lock information - elapsed time - total time - running time (depend on CONFIG_64BIT) - runnable time (depend on CONFIG_SCHED_INFO and CONFIG_SCHEDSTATS) - io sleep time (depend on CONFIG_TASK_DELAY_ACCT and /proc/sys/kernel/task_delayacct) - other time (by default other time will account nonio sleep time, but, if above kconfig is not defined, other time will include runnable time and/or io sleep time as wll) output: f2fs_lock_elapsed_time: dev = (254,52), comm: sh, pid: 13855, prio: 120, ioprio_class: 2, ioprio_data: 4, lock_name: cp_rwsem, lock_type: rlock, total: 1000, running: 993, runnable: 2, io_sleep: 0, other: 5 Signed-off-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>	2026-01-07 03:17:06 +00:00
Linus Torvalds	f0b9d8eb98	nfsd-6.19 fixes: ... A set of NFSD fixes that arrived after the 6.19 merge window. Issues that need expedient stable backports: - Remove an invalid NFS status code - Fix an fstests failure when using pNFS - Fix a UAF in v4_end_grace() - Fix the administrative interface used to revoke NFSv4 state - Fix a memory leak reported by syzbot -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEKLLlsBKG3yQ88j7+M2qzM29mf5cFAmlb2WUACgkQM2qzM29m f5cqaA/+MbO1kop63/TiNE0tRc34yTBnApg1XVza4vSmcpSgpB8ZKGZ5xOjnRpwg yBw9+/puEJhyogPE6JKEGnLiFr+s3ApInFHaxnXnrGZz1RR1qkqfioKudIcpC0s1 /pKx7y/fktltgo/5Dl0gp2QH3Oytg375ge+dcSQbopSTQYPbsAw7AmoHDPBQd8Nr Q/pIu1q/tAM8R2zyijU3eAiUMyYRCrxNVYnlsdYmj7Dn0ypybOyKufkpVCEaS3kO a7SV/QSVKdNbZOf8annwAhW+VN4urFmA9nnnr/yirrLJ0i2h18E0txrPFBszhftf xpOvaDR7okfEvzqwrHvVfRsqB4nYq9f0TSvvpPsS8vCtq34pWKZPa6iiSxeVL/jb EmFtiesUWClZzTIQSpUdbuU80cST6WEoNJJKDPZwF1XbA2navsDqgxKiYxsczjt6 M5SStHcafK5LrXPruqOhfco/uKTmHNJJlvBWxUGCMQEDvdXdEJ4MIlg8VxxvoWPR FQDwU+iSdPOwlG7L3Tl9/PGSNe0MxJSgvzK6JNoKL3LvDx80FtMErWxPJdqdIL0+ RpBsW7zaCyX9lwD866Frs4K2H1w2XFeQjOMI0Pz1SG9dZ8NoKJ+lzcwVY7GgHUvq NUNJLzL6MVCHytwTfqrSY7PGvUCrDqR102FQusQyplT4edcUv0M= =okQh -----END PGP SIGNATURE----- Merge tag 'nfsd-6.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux Pull nfsd fixes from Chuck Lever: "A set of NFSD fixes for stable that arrived after the merge window: - Remove an invalid NFS status code - Fix an fstests failure when using pNFS - Fix a UAF in v4_end_grace() - Fix the administrative interface used to revoke NFSv4 state - Fix a memory leak reported by syzbot" * tag 'nfsd-6.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: NFSD: net ref data still needs to be freed even if net hasn't startup nfsd: check that server is running in unlock_filesystem nfsd: use correct loop termination in nfsd4_revoke_states() nfsd: provide locking for v4_end_grace NFSD: Fix permission check for read access to executable-only files NFSD: Remove NFSERR_EAGAIN	2026-01-06 09:12:52 -08:00
Linus Torvalds	7f98ab9da0	for-6.19-rc4-tag ... -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE8rQSAMVO+zA4DBdWxWXV+ddtWDsFAmlb99EACgkQxWXV+ddt WDtJfQ//cppHAHSxb3NNDGXDiKx4ccCp9CWiOF7z+BTFfngsNGvbs2FzKFnYI2f3 dT/DlPV8uBgVX3uYL3ZI1na/5MShXvS+sajIRhz3woyKBb2shVqVnFmfA8A3pKf6 3Dfm6FWrJHGCgV28Oi5pbg/UQeTAHAmA2aPLYJKRnNwIq8pSSzDWRCVNFfYrt4o2 7UUW1PzasZ7tuqL55HcwzuXjVTYr/t3puLjq+ydVfGSJSZlmlMd3pnZXz8S7/BC6 jVQGOT6nK9SWCnfXD9plqqr4CY+ThJZJNSdhVTwfVxkxVHmEBWfqfhAToqZaLKX9 co3rXvvZyIQf5KeHMmtbb2P736zaAcKb7G41liRN7EZg/gOsROE+UziYRkTg+Xyg rztTksc913DsuHj19sZhIgcKRcym2h57wyZyt7vYAdsv9uksLUgKUo3U9CiTbEsb 8d/vgt1e3+ELoVcc+xVZSSGRDVzvZnxVmRHQV2dAtIXK34FXzqCDeKnFG0wsjqtF Kw6bV93cXLohfcB7fPPBdAHzVN89kfUXTBT8mrri7HnjSnZTJNeHrGpcRNNQ76BT 8RL6gSP32Mpo9HZOYYhl1Xj2hRonRiJrUQAb6x9CY1MMUP2vwVvVBUVj2NAohWdM vAYwRQDigw92RoKIYvHu+X+E5PXgX2AQ9NV8qiL79od+A7NFLgY= =hmbc -----END PGP SIGNATURE----- Merge tag 'for-6.19-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux Pull btrfs fixes from David Sterba: - fix potential deadlock due to mismatching transaction states when waiting for the current transaction - fix squota accounting with nested snapshots - fix quota inheritance of qgroups with multiple parent qgroups - fix NULL inode pointer in evict tracepoint - fix writes beyond end of file on systems with 64K page size and 4K block size - fix logging of inodes after exchange rename - fix use after free when using ref_tracker feature - space reservation fixes * tag 'for-6.19-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: btrfs: fix reservation leak in some error paths when inserting inline extent btrfs: do not free data reservation in fallback from inline due to -ENOSPC btrfs: fix use-after-free warning in btrfs_get_or_create_delayed_node() btrfs: always detect conflicting inodes when logging inode refs btrfs: fix beyond-EOF write handling btrfs: fix deadlock in wait_current_trans() due to ignored transaction type btrfs: fix NULL dereference on root when tracing inode eviction btrfs: qgroup: update all parent qgroups when doing quick inherit btrfs: fix qgroup_snapshot_quick_inherit() squota bug	2026-01-05 14:10:48 -08:00
Chuck Lever	c6c209ceb8	NFSD: Remove NFSERR_EAGAIN ... I haven't found an NFSERR_EAGAIN in RFCs 1094, 1813, 7530, or 8881. None of these RFCs have an NFS status code that match the numeric value "11". Based on the meaning of the EAGAIN errno, I presume the use of this status in NFSD means NFS4ERR_DELAY. So replace the one usage of nfserr_eagain, and remove it from NFSD's NFS status conversion tables. As far as I can tell, NFSERR_EAGAIN has existed since the pre-git era, but was not actually used by any code until commit f4e44b3933 ("NFSD: delay unmount source's export after inter-server copy completed."), at which time it become possible for NFSD to return a status code of 11 (which is not valid NFS protocol). Fixes: f4e44b3933 ("NFSD: delay unmount source's export after inter-server copy completed.") Cc: stable@vger.kernel.org Reviewed-by: NeilBrown <neil@brown.name> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>	2026-01-02 13:43:41 -05:00
Dave Airlie	7bc0f871f9	drm-misc-next for 6.20: ... Core Changes: - dma-buf: Add tracepoints - sched: Introduce new helpers Driver Changes: - amdxdna: Enable hardware context priority, Remove (obsolete and never public) NPU2 Support, Race condition fix - rockchip: Add RK3368 HDMI Support - rz-du: Add RZ/V2H(P) MIPI-DSI Support - panels: - st7571: Introduce SPI support - New panels: Sitronix ST7920, Samsung LTL106HL02, LG LH546WF1-ED01, HannStar HSD156JUW2 -----BEGIN PGP SIGNATURE----- iJUEABMJAB0WIQTkHFbLp4ejekA/qfgnX84Zoj2+dgUCaUUQPQAKCRAnX84Zoj2+ djCkAYC0wujWi4gdMY50vISgrz8sNnYlsMpWKlEgU9oBlPTC226FQz9VNzjruW2D ftxAsRcBfjTEY3eadqq51+B/JzKwDnWpQskjOq6/MZbrlXvMhnokVBkWzYKEF/s/ H+znO5LbfQ== =7lY/ -----END PGP SIGNATURE----- Merge tag 'drm-misc-next-2025-12-19' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next drm-misc-next for 6.20: Core Changes: - dma-buf: Add tracepoints - sched: Introduce new helpers Driver Changes: - amdxdna: Enable hardware context priority, Remove (obsolete and never public) NPU2 Support, Race condition fix - rockchip: Add RK3368 HDMI Support - rz-du: Add RZ/V2H(P) MIPI-DSI Support - panels: - st7571: Introduce SPI support - New panels: Sitronix ST7920, Samsung LTL106HL02, LG LH546WF1-ED01, HannStar HSD156JUW2 Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maxime Ripard <mripard@redhat.com> Link: https://patch.msgid.link/20251219-arcane-quaint-skunk-e383b0@houat	2025-12-26 19:00:41 +10:00
Shuai Xue	d4318c1a79	PCI: trace: Add RAS tracepoint to monitor link speed changes ... PCIe link speed degradation directly impacts system performance and often indicates hardware issues such as faulty devices, physical layer problems, or configuration errors. To this end, add a RAS tracepoint to monitor link speed changes, enabling proactive health checks and diagnostic analysis. The following output is generated when a device is hotplugged: $ echo 1 > /sys/kernel/debug/tracing/events/pci/pcie_link_event/enable $ cat /sys/kernel/debug/tracing/trace_pipe irq/51-pciehp-88 [001] ..... 381.545386: pcie_link_event: 0000:00:02.0 type:4, reason:4, cur_bus_speed:20, max_bus_speed:23, width:1, flit_mode:0, status:DLLLA Suggested-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Suggested-by: Matthew W Carlis <mattc@purestorage.com> Suggested-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Shuai Xue <xueshuai@linux.alibaba.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://patch.msgid.link/20251210132907.58799-3-xueshuai@linux.alibaba.com	2025-12-23 16:06:00 -06:00
Shuai Xue	9e541b3cee	PCI: trace: Add generic RAS tracepoint for hotplug event ... Hotplug events are critical indicators for analyzing hardware health, and surprise link downs can significantly impact system performance and reliability. Define a new TRACING_SYSTEM named "pci", add a generic RAS tracepoint for hotplug event to help health checks. Add enum pci_hotplug_event in include/uapi/linux/pci.h so applications like rasdaemon can register tracepoint event handlers for it. The following output is generated when a device is hotplugged: $ echo 1 > /sys/kernel/debug/tracing/events/pci/pci_hp_event/enable $ cat /sys/kernel/debug/tracing/trace_pipe irq/51-pciehp-88 [001] ..... 1311.177459: pci_hp_event: 0000:00:02.0 slot:10, event:CARD_PRESENT irq/51-pciehp-88 [001] ..... 1311.177566: pci_hp_event: 0000:00:02.0 slot:10, event:LINK_UP Suggested-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Shuai Xue <xueshuai@linux.alibaba.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Lukas Wunner <lukas@wunner.de> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> # for trace event Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://patch.msgid.link/20251210132907.58799-2-xueshuai@linux.alibaba.com	2025-12-23 16:05:56 -06:00
Linus Torvalds	44087d3d46	Miscellaneous x86 fixes: ... - Fix FPU core dumps on certain CPU models - Fix htmldocs build warning - Export TLB tracing event name via header - Remove unused constant from <linux/mm_types.h> - Fix comments - Fix whitespace noise in documentation - Fix variadic structure's definition to un-confuse UBSAN - Fix posted MSI interrupts irq_retrigger() bug - Fix asm build failure with older GCC builds Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmlHr/sRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1gpUQ/9FgdoIa3BbdyvP1ZOc7Sasl6OBjhvPKwZ 2pI7WOcble1Q3wh+BXUmrNnIQxgipENLUm31LaWn22QbHqPplAtzpCYABA06GW+f sbAcCMTmXzyBEUm6/Wh6FuoLcKrhr4GJ6UW02ROxE4M/hyWr4vQYZRAHKpmhimfJ u4VKrVMRWYoxd17KGEaVEz2WHT/MuctDDtjl1xhc6EbQxw6xmE0xYfFzYBcN8E31 0743rZ9BBYMXSmS9p83Qqjzj5S3Y+VErGxlCwJ+7QUFGGfwnb0iDLNUA4rk4VBf/ SL5xZXx6008GoBXEt6npvSUm4zQJI0QPyuCttkR/w0lX1TkoGvyGWKEjCBfnXaK5 QvptqoHSgpvqqaW6R8ophPJNTtKzPf2ZMQD+kZlRy9MVgKfQhlEPpU2DvouzYg1s CtgGHCdCUP5EhozS0l17R6knHUhNg3ZHyB5eRQexsA5gOO7vjxngq+oCMUmoVNPV ahGsolGKuU8nrZBTDTc0LpJq6gPpspUSEKdVHY0wX5m4rfKw4tPUsdS5Q7oqzc1K 1RJrFjzuouADUqW4L21Q7kTeOnRyr6lNej1TwtiOs9sUTmsv1AmywJ5GaZcIsFGP /rOaL+Wa8BGtkWFqkmHcq6f80IgQEL63+CoOpmY8uDZF5Ba55nUfG/q0JDZTLtMN LAc4pO7ubsA= =zJpa -----END PGP SIGNATURE----- Merge tag 'x86-urgent-2025-12-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Ingo Molnar: - Fix FPU core dumps on certain CPU models - Fix htmldocs build warning - Export TLB tracing event name via header - Remove unused constant from <linux/mm_types.h> - Fix comments - Fix whitespace noise in documentation - Fix variadic structure's definition to un-confuse UBSAN - Fix posted MSI interrupts irq_retrigger() bug - Fix asm build failure with older GCC builds * tag 'x86-urgent-2025-12-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/bug: Fix old GCC compile fails x86/msi: Make irq_retrigger() functional for posted MSI x86/platform/uv: Fix UBSAN array-index-out-of-bounds mm: Remove tlb_flush_reason::NR_TLB_FLUSH_REASONS from <linux/mm_types.h> x86/mm/tlb/trace: Export the TLB_REMOTE_WRONG_CPU enum in <trace/events/tlb.h> x86/sgx: Remove unmatched quote in __sgx_encl_extend function comment x86/boot/Documentation: Fix whitespace noise in boot.rst x86/fpu: Fix FPU state core dump truncation on CPUs with no extended xfeatures x86/boot/Documentation: Fix htmldocs build warning due to malformed table in boot.rst	2025-12-21 14:41:29 -08:00
gaoxiang17	281a226314	dma-buf: add some tracepoints to debug. ... Since we can only inspect dmabuf by iterating over process FDs or the dmabuf_list, we need to add our own tracepoints to track its status in real time in production. For example: binder:3016_1-3102 [006] ...1. 255.126521: dma_buf_export: exp_name=qcom,system size=12685312 ino=2738 binder:3016_1-3102 [006] ...1. 255.126528: dma_buf_fd: exp_name=qcom,system size=12685312 ino=2738 fd=8 binder:3016_1-3102 [006] ...1. 255.126642: dma_buf_mmap_internal: exp_name=qcom,system size=28672 ino=2739 kworker/6:1-86 [006] ...1. 255.127194: dma_buf_put: exp_name=qcom,system size=12685312 ino=2738 RenderThread-9293 [006] ...1. 316.618179: dma_buf_get: exp_name=qcom,system size=12771328 ino=2762 fd=176 RenderThread-9293 [006] ...1. 316.618195: dma_buf_dynamic_attach: exp_name=qcom,system size=12771328 ino=2762 attachment:ffffff880a18dd00 is_dynamic=0 dev_name=kgsl-3d0 RenderThread-9293 [006] ...1. 318.878220: dma_buf_detach: exp_name=qcom,system size=12771328 ino=2762 attachment:ffffff880a18dd00 is_dynamic=0 dev_name=kgsl-3d0 Signed-off-by: Xiang Gao <gaoxiang17@xiaomi.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/r/20251218062853.819744-1-gxxa03070307@gmail.com Signed-off-by: Christian König <christian.koenig@amd.com>	2025-12-18 11:21:51 +01:00
Miquel Sabaté Solà	f157dd6613	btrfs: fix NULL dereference on root when tracing inode eviction ... When evicting an inode the first thing we do is to setup tracing for it, which implies fetching the root's id. But in btrfs_evict_inode() the root might be NULL, as implied in the next check that we do in btrfs_evict_inode(). Hence, we either should set the ->root_objectid to 0 in case the root is NULL, or we move tracing setup after checking that the root is not NULL. Setting the rootid to 0 at least gives us the possibility to trace this call even in the case when the root is NULL, so that's the solution taken here. Fixes: 1abe9b8a13 ("Btrfs: add initial tracepoint support for btrfs") Reported-by: syzbot+d991fea1b4b23b1f6bf8@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=d991fea1b4b23b1f6bf8 Signed-off-by: Miquel Sabaté Solà <mssola@mssola.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>	2025-12-16 22:53:14 +01:00
Jaegeuk Kim	903c6e95bc	f2fs: add a tracepoint to see large folio read submission ... For example, 1327.539878: f2fs_preload_pages_start: dev = (252,16), ino = 14, i_size = 4294967296 start: 0, end: 8191 1327.539878: page_cache_sync_ra: dev=252:16 ino=e index=0 req_count=8192 order=9 size=0 async_size=0 ra_pages=4096 mmap_miss=0 prev_pos=-1 1327.539879: page_cache_ra_order: dev=252:16 ino=e index=0 order=9 size=4096 async_size=2048 ra_pages=4096 1327.541895: f2fs_readpages: dev = (252,16), ino = 14, start = 0 nrpage = 4096 1327.541930: f2fs_lookup_extent_tree_start: dev = (252,16), ino = 14, pgofs = 0, type = Read 1327.541931: f2fs_lookup_read_extent_tree_end: dev = (252,16), ino = 14, pgofs = 0, read_ext_info(fofs: 0, len: 1048576, blk: 4221440) 1327.541931: f2fs_map_blocks: dev = (252,16), ino = 14, file offset = 0, start blkaddr = 0x406a00, len = 0x1000, flags = 2, seg_type = 8, may_create = 0, multidevice = 0, flag = 0, err = 0 1327.541989: f2fs_read_folio: dev = (252,16), ino = 14, DATA, FILE, index = 0, nr_pages = 512, dirty = 0, uptodate = 0 1327.542012: f2fs_read_folio: dev = (252,16), ino = 14, DATA, FILE, index = 512, nr_pages = 512, dirty = 0, uptodate = 0 1327.542036: f2fs_read_folio: dev = (252,16), ino = 14, DATA, FILE, index = 1024, nr_pages = 512, dirty = 0, uptodate = 0 1327.542080: f2fs_read_folio: dev = (252,16), ino = 14, DATA, FILE, index = 1536, nr_pages = 512, dirty = 0, uptodate = 0 1327.542127: f2fs_read_folio: dev = (252,16), ino = 14, DATA, FILE, index = 2048, nr_pages = 512, dirty = 0, uptodate = 0 1327.542151: f2fs_read_folio: dev = (252,16), ino = 14, DATA, FILE, index = 2560, nr_pages = 512, dirty = 0, uptodate = 0 1327.542196: f2fs_read_folio: dev = (252,16), ino = 14, DATA, FILE, index = 3072, nr_pages = 512, dirty = 0, uptodate = 0 1327.542219: f2fs_read_folio: dev = (252,16), ino = 14, DATA, FILE, index = 3584, nr_pages = 512, dirty = 0, uptodate = 0 1327.542239: f2fs_submit_read_bio: dev = (252,16)/(252,16), rw = READ(R), DATA, sector = 33771520, size = 16777216 1327.542269: page_cache_sync_ra: dev=252:16 ino=e index=4096 req_count=8192 order=9 size=4096 async_size=2048 ra_pages=4096 mmap_miss=0 prev_pos=-1 1327.542289: page_cache_ra_order: dev=252:16 ino=e index=4096 order=9 size=4096 async_size=2048 ra_pages=4096 1327.544485: f2fs_readpages: dev = (252,16), ino = 14, start = 4096 nrpage = 4096 1327.544521: f2fs_lookup_extent_tree_start: dev = (252,16), ino = 14, pgofs = 4096, type = Read 1327.544521: f2fs_lookup_read_extent_tree_end: dev = (252,16), ino = 14, pgofs = 4096, read_ext_info(fofs: 0, len: 1048576, blk: 4221440) 1327.544522: f2fs_map_blocks: dev = (252,16), ino = 14, file offset = 4096, start blkaddr = 0x407a00, len = 0x1000, flags = 2, seg_type = 8, may_create = 0, multidevice = 0, flag = 0, err = 0 1327.544550: f2fs_read_folio: dev = (252,16), ino = 14, DATA, FILE, index = 4096, nr_pages = 512, dirty = 0, uptodate = 0 1327.544575: f2fs_read_folio: dev = (252,16), ino = 14, DATA, FILE, index = 4608, nr_pages = 512, dirty = 0, uptodate = 0 1327.544601: f2fs_read_folio: dev = (252,16), ino = 14, DATA, FILE, index = 5120, nr_pages = 512, dirty = 0, uptodate = 0 1327.544647: f2fs_read_folio: dev = (252,16), ino = 14, DATA, FILE, index = 5632, nr_pages = 512, dirty = 0, uptodate = 0 1327.544692: f2fs_read_folio: dev = (252,16), ino = 14, DATA, FILE, index = 6144, nr_pages = 512, dirty = 0, uptodate = 0 1327.544734: f2fs_read_folio: dev = (252,16), ino = 14, DATA, FILE, index = 6656, nr_pages = 512, dirty = 0, uptodate = 0 1327.544777: f2fs_read_folio: dev = (252,16), ino = 14, DATA, FILE, index = 7168, nr_pages = 512, dirty = 0, uptodate = 0 1327.544805: f2fs_read_folio: dev = (252,16), ino = 14, DATA, FILE, index = 7680, nr_pages = 512, dirty = 0, uptodate = 0 1327.544826: f2fs_submit_read_bio: dev = (252,16)/(252,16), rw = READ(R), DATA, sector = 33804288, size = 16777216 1327.544852: f2fs_preload_pages_end: dev = (252,16), ino = 14, i_size = 4294967296 start: 8192, end: 8191 Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>	2025-12-16 00:46:49 +00:00
Linus Torvalds	0dfb36b2dc	We have a patch that adds an initial set of tracepoints to the MDS ... client from Max, a fix that hardens osdmap parsing code from myself (marked for stable) and a few assorted fixups. -----BEGIN PGP SIGNATURE----- iQFHBAABCAAxFiEEydHwtzie9C7TfviiSn/eOAIR84sFAmk8YxITHGlkcnlvbW92 QGdtYWlsLmNvbQAKCRBKf944AhHzi702B/9Mfj0HQSAaWCyMz6GJAv8+1ijVTSbG nTFeMmipYZhPn188OvWqHsf1cw9rWY0fzenIEW05Tk3YmMvYdeRmCcOkZdeG06xw um8XxX4L8315E0b98CCpQpVa02ux7XoNtBPjeHccl8PEErJQgQJrQ3Cc/C8kk5U5 a0KlfeVRXYWkOPJva3+wosOu0t9QgJ9ABt5stqcvYDfdkKfvatQMBN3N1nNRKkFH yhNPv+nRtypSk8jiHhKeeCVmosC0L7MnKuO593vDr761cY5mKrgKFqc2LLlPF6r0 /p13s5SG6X38RUegWCjcK4XRJAzVcR/tyod8LkVVp8d5DC/ptcyy8H+I =h1gC -----END PGP SIGNATURE----- Merge tag 'ceph-for-6.19-rc1' of https://github.com/ceph/ceph-client Pull ceph updates from Ilya Dryomov: "We have a patch that adds an initial set of tracepoints to the MDS client from Max, a fix that hardens osdmap parsing code from myself (marked for stable) and a few assorted fixups" * tag 'ceph-for-6.19-rc1' of https://github.com/ceph/ceph-client: rbd: stop selecting CRC32, CRYPTO, and CRYPTO_AES ceph: stop selecting CRC32, CRYPTO, and CRYPTO_AES libceph: make decode_pool() more resilient against corrupted osdmaps libceph: Amend checking to fix `make W=1` build breakage ceph: Amend checking to fix `make W=1` build breakage ceph: add trace points to the MDS client libceph: fix log output race condition in OSD client	2025-12-14 15:24:10 +12:00
Tal Zussman	8b62e64e6d	x86/mm/tlb/trace: Export the TLB_REMOTE_WRONG_CPU enum in <trace/events/tlb.h> ... When the TLB_REMOTE_WRONG_CPU enum was introduced for the tlb_flush tracepoint, the enum was not exported to user-space. Add it to the appropriate macro definition to enable parsing by userspace tools, as per: Link: https://lore.kernel.org/all/20150403013802.220157513@goodmis.org [ mingo: Capitalize IPI, etc. ] Fixes: 2815a56e4b ("x86/mm/tlb: Add tracepoint for TLB flush IPI to stale CPU") Signed-off-by: Tal Zussman <tz2294@columbia.edu> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Rik van Riel <riel@surriel.com> Link: https://patch.msgid.link/20251212-tlb-trace-fix-v2-1-d322e0ad9b69@columbia.edu	2025-12-13 11:01:16 +01:00
Max Kellermann	d927a595ab	ceph: add trace points to the MDS client ... This patch adds trace points to the Ceph filesystem MDS client: - request submission (CEPH_MSG_CLIENT_REQUEST) and completion (CEPH_MSG_CLIENT_REPLY) - capabilities (CEPH_MSG_CLIENT_CAPS) These are the central pieces that are useful for analyzing MDS latency/performance problems from the client's perspective. In the long run, all doutc() calls should be replaced with tracepoints. This way, the Ceph filesystem can be traced at any time (without spamming the kernel log). Additionally, trace points can be used in BPF programs (which can even deference the pointer parameters and extract more values). Signed-off-by: Max Kellermann <max.kellermann@ionos.com> Reviewed-by: Viacheslav Dubeyko <Slava.Dubeyko@ibm.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>	2025-12-10 11:50:54 +01:00
Linus Torvalds	cb015814f8	f2fs-for-6.19-rc1 ... This series focuses on minor clean-ups and performance optimizations across sysfs, documentation, debugfs, tracepoints, slab allocation, and GC. Furthermore, it resolves several corner-case bugs caught by xfstests, as well as issues related to 16KB page support and f2fs_enable_checkpoint. Enhancement: - wrap ASCII tables in literal blocks to fix LaTeX build - optimize trace_f2fs_write_checkpoint with enums - support to show curseg.next_blkoff in debugfs - add a sysfs entry to show max open zones - add fadvise tracepoint - use global inline_xattr_slab instead of per-sb slab cache - set default valid_thresh_ratio to 80 for zoned devices - maintain one time GC mode is enabled during whole zoned GC cycle Bug fix: - ensure node page reads complete before f2fs_put_super() finishes - fix to not account invalid blocks in get_left_section_blocks() - revert summary entry count from 2048 to 512 in 16kb block support - fix to detect recoverable inode during dryrun of find_fsync_dnodes() - fix age extent cache insertion skip on counter overflow - Add sanity checks before unlinking and loading inodes - ensure minimum trim granularity accounts for all devices - block cache/dio write during f2fs_enable_checkpoint() - fix to propagate error from f2fs_enable_checkpoint() - invalidate dentry cache on failed whiteout creation - fix to avoid updating compression context during writeback - fix to avoid updating zero-sized extent in extent cache - fix to avoid potential deadlock -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE00UqedjCtOrGVvQiQBSofoJIUNIFAmk3N1kACgkQQBSofoJI UNKfGw//Z7+0Oy0w/3k8UkJHvz6b3sDFzzCGlyBtYUaQaxp0eXxytB9T7GNE4g8z UA6nOA7VvHdFyu8YvJkMrf8vejorVnO9I86vlUZ/uZcOqKPWkjNxaHJvMYg0ZvkS uwiFo8rSL5FO0MSbnVhZScnolNuEINYi1sYd0fb2BzHB3P7cSwRrDGYuU53E3S8p 3JsOa1EN0DrxlL7YTI8q8wmMcN1+/BK9YP4Sl3r8nBAYNAoP/JLMY40YkOTk3gKy ppJ32e++D9XxVTEaZUvktW/z9zLKdSvqjFE0BduSbNrqlfGj2AEwU1WJouFPYDOs b4mDhi9y3Mv2LWY6fTeOXcT/nTf6IssopHNBpPI6Ay73GwENPOYf+q4oTNeqpa1f sGqmw6M8NGiEjQAPKrbON8IDSpdc6Yzk1ENRjOf5j7/xR0gtL1b3G0KV5FCO+25x QP9KupkhBc9yheCTrig6reCQlvfWU+I70tyB30YD/BcqhCB/EjBvM/v9kK1udN0e 6wjr5eBfX8z8DGlqNYzAjjEQC8IfkwDc1qLkovTsBKBo2Z0fHPriAZERAcLU7TuU z06GZQT6QdZ4lAw4KfNWcef0S3m14qY5E8qJoQS2G7DwdMOglouJRakOi75nW1Dc lSZBI1m1JxwLsj7iXNXLEJoGMUR5u+oUzJyj46trn6fOG6AIbuo= =4ZOp -----END PGP SIGNATURE----- Merge tag 'f2fs-for-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs Pull f2fs updates from Jaegeuk Kim: "This series focuses on minor clean-ups and performance optimizations across sysfs, documentation, debugfs, tracepoints, slab allocation, and GC. Furthermore, it resolves several corner-case bugs caught by xfstests, as well as issues related to 16KB page support and f2fs_enable_checkpoint. Enhancement: - wrap ASCII tables in literal blocks to fix LaTeX build - optimize trace_f2fs_write_checkpoint with enums - support to show curseg.next_blkoff in debugfs - add a sysfs entry to show max open zones - add fadvise tracepoint - use global inline_xattr_slab instead of per-sb slab cache - set default valid_thresh_ratio to 80 for zoned devices - maintain one time GC mode is enabled during whole zoned GC cycle Bug fix: - ensure node page reads complete before f2fs_put_super() finishes - do not account invalid blocks in get_left_section_blocks() - revert summary entry count from 2048 to 512 in 16kb block support - detect recoverable inode during dryrun of find_fsync_dnodes() - fix age extent cache insertion skip on counter overflow - add sanity checks before unlinking and loading inodes - ensure minimum trim granularity accounts for all devices - block cache/dio write during f2fs_enable_checkpoint() - propagate error from f2fs_enable_checkpoint() - invalidate dentry cache on failed whiteout creation - avoid updating compression context during writeback - avoid updating zero-sized extent in extent cache - avoid potential deadlock" * tag 'f2fs-for-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (39 commits) f2fs: ignore discard return value f2fs: optimize trace_f2fs_write_checkpoint with enums f2fs: fix to not account invalid blocks in get_left_section_blocks() f2fs: support to show curseg.next_blkoff in debugfs docs: f2fs: wrap ASCII tables in literal blocks to fix LaTeX build f2fs: expand scalability of f2fs mount option f2fs: change default schedule timeout value f2fs: introduce f2fs_schedule_timeout() f2fs: use memalloc_retry_wait() as much as possible f2fs: add a sysfs entry to show max open zones f2fs: wrap all unusable_blocks_per_sec code in CONFIG_BLK_DEV_ZONED f2fs: simplify list initialization in f2fs_recover_fsync_data() f2fs: revert summary entry count from 2048 to 512 in 16kb block support f2fs: fix to detect recoverable inode during dryrun of find_fsync_dnodes() f2fs: fix return value of f2fs_recover_fsync_data() f2fs: add fadvise tracepoint f2fs: fix age extent cache insertion skip on counter overflow f2fs: Add sanity checks before unlinking and loading inodes f2fs: Rename f2fs_unlink exit label f2fs: ensure minimum trim granularity accounts for all devices ...	2025-12-09 12:06:20 +09:00
Linus Torvalds	cfd4039213	io_uring-6.19-20251208 ... -----BEGIN PGP SIGNATURE----- iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAmk3KXIQHGF4Ym9lQGtl cm5lbC5kawAKCRD301j7KXHgpo91EACGlORRzg4FJXox8DcItdOQsZGFIqCXts9p SVtbxV6sPdsHwRB/xGTzHWP2iWUjA4+i5l3n4mt8vzGAmQU50gtdaIsJEMq7SOfB nJW0wNi905qcLihOfTpQ/2xpE5Am/iWPavFkAqOF7qo6GlS7aN47TIaHCPmAm3Nx Kla2XMDnneFhl8xCdnJHaLrzyD94xlArywG5UPjkgFGCmLEu2ZE6T9ivq86DHQZJ Ujy3ueMO/7SErfoDbY4I/gPs4ONxBaaieKycuyljQQB3n6sj15EBNB0TMDPA/Rwx Aq4WD/MC48titpxV2BT9RKCjYvJ4wsBww4uFLkCTKDlFCRH0pqclzgtd2iB46kge tj9KfTS9tkLBp9steMcw45FStu0iiHBwqqTcqUr1q/wzIPbPAQ/L/Mu6AlUOheW/ MmedhtPP22IShpkKYWSv923P2Qp2HhKa6LtoKJzxOK9rb6yoYvHl0zEQlKbWtPgq lpGzjbBoCtjqwlQKTpcH8diwaZ/fafrIP4h80Hg1pRiQEwzBgDpA3/N0EcfigkmU 2IgyH3k6F9v/IgyVPkpzNh4w6hrr9RnxVA8yaf2ItkfWKwajWJAtPLUBuING8qqa 3xg1MZ27NS6gUKEdCEy/mAaz8Vt2SGRUc3szHYrZHy7OFEW94WoiKAYK9qsZXGzX ms2VldIiQA== =Mbok -----END PGP SIGNATURE----- Merge tag 'io_uring-6.19-20251208' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux Pull io_uring updates from Jens Axboe: "Followup set of fixes for io_uring for this merge window. These are either later fixes, or cleanups that don't make sense to defer. This pull request contains: - Fix for a recent regression in io-wq worker creation - Tracing cleanup - Use READ_ONCE/WRITE_ONCE consistently for ring mapped kbufs. Mostly for documentation purposes, indicating that they are shared with userspace - Fix for POLL_ADD losing a completion, if the request is updated and now is triggerable - eg, if POLLIN is set with the updated, and the polled file is readable - In conjunction with the above fix, also unify how poll wait queue entries are deleted with the head update. We had 3 different spots doing both the list deletion and head write, with one of them nicely documented. Abstract that into a helper and use it consistently - Small series from Joanne fixing an issue with buffer cloning, and cleaning up the arg validation" * tag 'io_uring-6.19-20251208' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: io_uring/poll: unify poll waitqueue entry and list removal io_uring/kbuf: use WRITE_ONCE() for userspace-shared buffer ring fields io_uring/kbuf: use READ_ONCE() for userspace-mapped memory io_uring/rsrc: fix lost entries after cloned range io_uring/rsrc: rename misleading src_node variable in io_clone_buffers() io_uring/rsrc: clean up buffer cloning arg validation io_uring/trace: rename io_uring_queue_async_work event "rw" field io_uring/io-wq: always retry worker create on ERESTART* io_uring/poll: correctly handle io_poll_add() return value on update	2025-12-09 09:07:28 +09:00
Linus Torvalds	7203ca412f	Significant patch series in this merge are as follows: ... - The 10 patch series "__vmalloc()/kvmalloc() and no-block support" from Uladzislau Rezki reworks the vmalloc() code to support non-blocking allocations (GFP_ATOIC, GFP_NOWAIT). - The 2 patch series "ksm: fix exec/fork inheritance" from xu xin fixes a rare case where the KSM MMF_VM_MERGE_ANY prctl state is not inherited across fork/exec. - The 4 patch series "mm/zswap: misc cleanup of code and documentations" from SeongJae Park does some light maintenance work on the zswap code. - The 5 patch series "mm/page_owner: add debugfs files 'show_handles' and 'show_stacks_handles'" from Mauricio Faria de Oliveira enhances the /sys/kernel/debug/page_owner debug feature. It adds unique identifiers to differentiate the various stack traces so that userspace monitoring tools can better match stack traces over time. - The 2 patch series "mm/page_alloc: pcp->batch cleanups" from Joshua Hahn makes some minor alterations to the page allocator's per-cpu-pages feature. - The 2 patch series "Improve UFFDIO_MOVE scalability by removing anon_vma lock" from Lokesh Gidra addresses a scalability issue in userfaultfd's UFFDIO_MOVE operation. - The 2 patch series "kasan: cleanups for kasan_enabled() checks" from Sabyrzhan Tasbolatov performs some cleanup in the KASAN code. - The 2 patch series "drivers/base/node: fold node register and unregister functions" from Donet Tom cleans up the NUMA node handling code a little. - The 4 patch series "mm: some optimizations for prot numa" from Kefeng Wang provides some cleanups and small optimizations to the NUMA allocation hinting code. - The 5 patch series "mm/page_alloc: Batch callers of free_pcppages_bulk" from Joshua Hahn addresses long lock hold times at boot on large machines. These were causing (harmless) softlockup warnings. - The 2 patch series "optimize the logic for handling dirty file folios during reclaim" from Baolin Wang removes some now-unnecessary work from page reclaim. - The 10 patch series "mm/damon: allow DAMOS auto-tuned for per-memcg per-node memory usage" from SeongJae Park enhances the DAMOS auto-tuning feature. - The 2 patch series "mm/damon: fixes for address alignment issues in DAMON_LRU_SORT and DAMON_RECLAIM" from Quanmin Yan fixes DAMON_LRU_SORT and DAMON_RECLAIM with certain userspace configuration. - The 15 patch series "expand mmap_prepare functionality, port more users" from Lorenzo Stoakes enhances the new(ish) file_operations.mmap_prepare() method and ports additional callsites from the old ->mmap() over to ->mmap_prepare(). - The 8 patch series "Fix stale IOTLB entries for kernel address space" from Lu Baolu fixes a bug (and possible security issue on non-x86) in the IOMMU code. In some situations the IOMMU could be left hanging onto a stale kernel pagetable entry. - The 4 patch series "mm/huge_memory: cleanup __split_unmapped_folio()" from Wei Yang cleans up and optimizes the folio splitting code. - The 5 patch series "mm, swap: misc cleanup and bugfix" from Kairui Song implements some cleanups and a minor fix in the swap discard code. - The 8 patch series "mm/damon: misc documentation fixups" from SeongJae Park does as advertised. - The 9 patch series "mm/damon: support pin-point targets removal" from SeongJae Park permits userspace to remove a specific monitoring target in the middle of the current targets list. - The 2 patch series "mm: MISC follow-up patches for linux/pgalloc.h" from Harry Yoo implements a couple of cleanups related to mm header file inclusion. - The 2 patch series "mm/swapfile.c: select swap devices of default priority round robin" from Baoquan He improves the selection of swap devices for NUMA machines. - The 3 patch series "mm: Convert memory block states (MEM_*) macros to enums" from Israel Batista changes the memory block labels from macros to enums so they will appear in kernel debug info. - The 3 patch series "ksm: perform a range-walk to jump over holes in break_ksm" from Pedro Demarchi Gomes addresses an inefficiency when KSM unmerges an address range. - The 22 patch series "mm/damon/tests: fix memory bugs in kunit tests" from SeongJae Park fixes leaks and unhandled malloc() failures in DAMON userspace unit tests. - The 2 patch series "some cleanups for pageout()" from Baolin Wang cleans up a couple of minor things in the page scanner's writeback-for-eviction code. - The 2 patch series "mm/hugetlb: refactor sysfs/sysctl interfaces" from Hui Zhu moves hugetlb's sysfs/sysctl handling code into a new file. - The 9 patch series "introduce VM_MAYBE_GUARD and make it sticky" from Lorenzo Stoakes makes the VMA guard regions available in /proc/pid/smaps and improves the mergeability of guarded VMAs. - The 2 patch series "mm: perform guard region install/remove under VMA lock" from Lorenzo Stoakes reduces mmap lock contention for callers performing VMA guard region operations. - The 2 patch series "vma_start_write_killable" from Matthew Wilcox starts work in permitting applications to be killed when they are waiting on a read_lock on the VMA lock. - The 11 patch series "mm/damon/tests: add more tests for online parameters commit" from SeongJae Park adds additional userspace testing of DAMON's "commit" feature. - The 9 patch series "mm/damon: misc cleanups" from SeongJae Park does that. - The 2 patch series "make VM_SOFTDIRTY a sticky VMA flag" from Lorenzo Stoakes addresses the possible loss of a VMA's VM_SOFTDIRTY flag when that VMA is merged with another. - The 16 patch series "mm: support device-private THP" from Balbir Singh introduces support for Transparent Huge Page (THP) migration in zone device-private memory. - The 3 patch series "Optimize folio split in memory failure" from Zi Yan optimizes folio split operations in the memory failure code. - The 2 patch series "mm/huge_memory: Define split_type and consolidate split support checks" from Wei Yang provides some more cleanups in the folio splitting code. - The 16 patch series "mm: remove is_swap_[pte, pmd]() + non-swap entries, introduce leaf entries" from Lorenzo Stoakes cleans up our handling of pagetable leaf entries by introducing the concept of 'software leaf entries', of type softleaf_t. - The 4 patch series "reparent the THP split queue" from Muchun Song reparents the THP split queue to its parent memcg. This is in preparation for addressing the long-standing "dying memcg" problem, wherein dead memcg's linger for too long, consuming memory resources. - The 3 patch series "unify PMD scan results and remove redundant cleanup" from Wei Yang does a little cleanup in the hugepage collapse code. - The 6 patch series "zram: introduce writeback bio batching" from Sergey Senozhatsky improves zram writeback efficiency by introducing batched bio writeback support. - The 4 patch series "memcg: cleanup the memcg stats interfaces" from Shakeel Butt cleans up our handling of the interrupt safety of some memcg stats. - The 4 patch series "make vmalloc gfp flags usage more apparent" from Vishal Moola cleans up vmalloc's handling of incoming GFP flags. - The 6 patch series "mm: Add soft-dirty and uffd-wp support for RISC-V" from Chunyan Zhang teches soft dirty and userfaultfd write protect tracking to use RISC-V's Svrsw60t59b extension. - The 5 patch series "mm: swap: small fixes and comment cleanups" from Youngjun Park fixes a small bug and cleans up some of the swap code. - The 4 patch series "initial work on making VMA flags a bitmap" from Lorenzo Stoakes starts work on converting the vma struct's flags to a bitmap, so we stop running out of them, especially on 32-bit. - The 2 patch series "mm/swapfile: fix and cleanup swap list iterations" from Youngjun Park addresses a possible bug in the swap discard code and cleans things up a little. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaTEb0wAKCRDdBJ7gKXxA jjfIAP94W4EkCCwNOupnChoG+YWw/JW21anXt5NN+i5svn1yugEAwzvv6A+cAFng o+ug/fyrfPZG7PLp2R8WFyGIP0YoBA4= =IUzS -----END PGP SIGNATURE----- Merge tag 'mm-stable-2025-12-03-21-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: "__vmalloc()/kvmalloc() and no-block support" (Uladzislau Rezki) Rework the vmalloc() code to support non-blocking allocations (GFP_ATOIC, GFP_NOWAIT) "ksm: fix exec/fork inheritance" (xu xin) Fix a rare case where the KSM MMF_VM_MERGE_ANY prctl state is not inherited across fork/exec "mm/zswap: misc cleanup of code and documentations" (SeongJae Park) Some light maintenance work on the zswap code "mm/page_owner: add debugfs files 'show_handles' and 'show_stacks_handles'" (Mauricio Faria de Oliveira) Enhance the /sys/kernel/debug/page_owner debug feature by adding unique identifiers to differentiate the various stack traces so that userspace monitoring tools can better match stack traces over time "mm/page_alloc: pcp->batch cleanups" (Joshua Hahn) Minor alterations to the page allocator's per-cpu-pages feature "Improve UFFDIO_MOVE scalability by removing anon_vma lock" (Lokesh Gidra) Address a scalability issue in userfaultfd's UFFDIO_MOVE operation "kasan: cleanups for kasan_enabled() checks" (Sabyrzhan Tasbolatov) "drivers/base/node: fold node register and unregister functions" (Donet Tom) Clean up the NUMA node handling code a little "mm: some optimizations for prot numa" (Kefeng Wang) Cleanups and small optimizations to the NUMA allocation hinting code "mm/page_alloc: Batch callers of free_pcppages_bulk" (Joshua Hahn) Address long lock hold times at boot on large machines. These were causing (harmless) softlockup warnings "optimize the logic for handling dirty file folios during reclaim" (Baolin Wang) Remove some now-unnecessary work from page reclaim "mm/damon: allow DAMOS auto-tuned for per-memcg per-node memory usage" (SeongJae Park) Enhance the DAMOS auto-tuning feature "mm/damon: fixes for address alignment issues in DAMON_LRU_SORT and DAMON_RECLAIM" (Quanmin Yan) Fix DAMON_LRU_SORT and DAMON_RECLAIM with certain userspace configuration "expand mmap_prepare functionality, port more users" (Lorenzo Stoakes) Enhance the new(ish) file_operations.mmap_prepare() method and port additional callsites from the old ->mmap() over to ->mmap_prepare() "Fix stale IOTLB entries for kernel address space" (Lu Baolu) Fix a bug (and possible security issue on non-x86) in the IOMMU code. In some situations the IOMMU could be left hanging onto a stale kernel pagetable entry "mm/huge_memory: cleanup __split_unmapped_folio()" (Wei Yang) Clean up and optimize the folio splitting code "mm, swap: misc cleanup and bugfix" (Kairui Song) Some cleanups and a minor fix in the swap discard code "mm/damon: misc documentation fixups" (SeongJae Park) "mm/damon: support pin-point targets removal" (SeongJae Park) Permit userspace to remove a specific monitoring target in the middle of the current targets list "mm: MISC follow-up patches for linux/pgalloc.h" (Harry Yoo) A couple of cleanups related to mm header file inclusion "mm/swapfile.c: select swap devices of default priority round robin" (Baoquan He) improve the selection of swap devices for NUMA machines "mm: Convert memory block states (MEM_*) macros to enums" (Israel Batista) Change the memory block labels from macros to enums so they will appear in kernel debug info "ksm: perform a range-walk to jump over holes in break_ksm" (Pedro Demarchi Gomes) Address an inefficiency when KSM unmerges an address range "mm/damon/tests: fix memory bugs in kunit tests" (SeongJae Park) Fix leaks and unhandled malloc() failures in DAMON userspace unit tests "some cleanups for pageout()" (Baolin Wang) Clean up a couple of minor things in the page scanner's writeback-for-eviction code "mm/hugetlb: refactor sysfs/sysctl interfaces" (Hui Zhu) Move hugetlb's sysfs/sysctl handling code into a new file "introduce VM_MAYBE_GUARD and make it sticky" (Lorenzo Stoakes) Make the VMA guard regions available in /proc/pid/smaps and improves the mergeability of guarded VMAs "mm: perform guard region install/remove under VMA lock" (Lorenzo Stoakes) Reduce mmap lock contention for callers performing VMA guard region operations "vma_start_write_killable" (Matthew Wilcox) Start work on permitting applications to be killed when they are waiting on a read_lock on the VMA lock "mm/damon/tests: add more tests for online parameters commit" (SeongJae Park) Add additional userspace testing of DAMON's "commit" feature "mm/damon: misc cleanups" (SeongJae Park) "make VM_SOFTDIRTY a sticky VMA flag" (Lorenzo Stoakes) Address the possible loss of a VMA's VM_SOFTDIRTY flag when that VMA is merged with another "mm: support device-private THP" (Balbir Singh) Introduce support for Transparent Huge Page (THP) migration in zone device-private memory "Optimize folio split in memory failure" (Zi Yan) "mm/huge_memory: Define split_type and consolidate split support checks" (Wei Yang) Some more cleanups in the folio splitting code "mm: remove is_swap_[pte, pmd]() + non-swap entries, introduce leaf entries" (Lorenzo Stoakes) Clean up our handling of pagetable leaf entries by introducing the concept of 'software leaf entries', of type softleaf_t "reparent the THP split queue" (Muchun Song) Reparent the THP split queue to its parent memcg. This is in preparation for addressing the long-standing "dying memcg" problem, wherein dead memcg's linger for too long, consuming memory resources "unify PMD scan results and remove redundant cleanup" (Wei Yang) A little cleanup in the hugepage collapse code "zram: introduce writeback bio batching" (Sergey Senozhatsky) Improve zram writeback efficiency by introducing batched bio writeback support "memcg: cleanup the memcg stats interfaces" (Shakeel Butt) Clean up our handling of the interrupt safety of some memcg stats "make vmalloc gfp flags usage more apparent" (Vishal Moola) Clean up vmalloc's handling of incoming GFP flags "mm: Add soft-dirty and uffd-wp support for RISC-V" (Chunyan Zhang) Teach soft dirty and userfaultfd write protect tracking to use RISC-V's Svrsw60t59b extension "mm: swap: small fixes and comment cleanups" (Youngjun Park) Fix a small bug and clean up some of the swap code "initial work on making VMA flags a bitmap" (Lorenzo Stoakes) Start work on converting the vma struct's flags to a bitmap, so we stop running out of them, especially on 32-bit "mm/swapfile: fix and cleanup swap list iterations" (Youngjun Park) Address a possible bug in the swap discard code and clean things up a little [ This merge also reverts commit ebb9aeb980 ("vfio/nvgrace-gpu: register device memory for poison handling") because it looks broken to me, I've asked for clarification - Linus ] * tag 'mm-stable-2025-12-03-21-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (321 commits) mm: fix vma_start_write_killable() signal handling mm/swapfile: use plist_for_each_entry in __folio_throttle_swaprate mm/swapfile: fix list iteration when next node is removed during discard fs/proc/task_mmu.c: fix make_uffd_wp_huge_pte() huge pte handling mm/kfence: add reboot notifier to disable KFENCE on shutdown memcg: remove inc/dec_lruvec_kmem_state helpers selftests/mm/uffd: initialize char variable to Null mm: fix DEBUG_RODATA_TEST indentation in Kconfig mm: introduce VMA flags bitmap type tools/testing/vma: eliminate dependency on vma->__vm_flags mm: simplify and rename mm flags function for clarity mm: declare VMA flags by bit zram: fix a spelling mistake mm/page_alloc: optimize lowmem_reserve max lookup using its semantic monotonicity mm/vmscan: skip increasing kswapd_failures when reclaim was boosted pagemap: update BUDDY flag documentation mm: swap: remove scan_swap_map_slots() references from comments mm: swap: change swap_alloc_slow() to void mm, swap: remove redundant comment for read_swap_cache_async mm, swap: use SWP_SOLIDSTATE to determine if swap is rotational ...	2025-12-05 13:52:43 -08:00
Linus Torvalds	69c5079b49	tracing updates for v6.19: ... - Merge branch shared with kprobes on extending trace options The trace options were defined by a 32 bit variable. This limits the tracing instances to have a total of 32 different options. As that limit has been hit, and more options are being added, increase the option mask to a 64 bit number, doubling the number of options available. As this is required for the kprobe topic branches as well as the tracing topic branch, a separate branch was created and merged into both. - Make trace_user_fault_read() available for the rest of tracing The function trace_user_fault_read() is used by trace_marker file read to allow reading user space to be done fast and without locking or allocations. Make this available so that the system call trace events can use it too. - Have system call trace events read user space values Now that the system call trace events callbacks are called in a faultable context, take advantage of this and read the user space buffers for various system calls. For example, show the path name of the openat system call instead of just showing the pointer to that path name in user space. Also show the contents of the buffer of the write system call. Several system call trace events are updated to make tracing into a light weight strace tool for all applications in the system. - Update perf system call tracing to do the same - And a config and syscall_user_buf_size file to control the size of the buffer Limit the amount of data that can be read from user space. The default size is 63 bytes but that can be expanded to 165 bytes. - Allow the persistent ring buffer to print system calls normally The persistent ring buffer prints trace events by their type and ignores the print_fmt. This is because the print_fmt may change from kernel to kernel. As the system call output is fixed by the system call ABI itself, there's no reason to limit that. This makes reading the system call events in the persistent ring buffer much nicer and easier to understand. - Add options to show text offset to function profiler The function profiler that counts the number of times a function is hit currently lists all functions by its name and offset. But this becomes ambiguous when there are several functions with the same name. Add a tracing option that changes the output to be that of _text+offset instead. Now a user space tool can use this information to map the _text+offset to the unique function it is counting. - Report bad dynamic event command If a bad command is passed to the dynamic_events file, report it properly in the error log. - Clean up tracer options Clean up the tracer option code a bit, by removing some useless code and also using switch statements instead of a series of if statements. - Have tracing options be instance specific Tracers can have their own options (function tracer, irqsoff tracer, function graph tracer, etc). But now that the same tracer can be enabled in multiple trace instances, their options are still global. The API is per instance, thus changing one affects other instances. This isn't even consistent, as the option take affect differently depending on when an tracer started in an instance. Make the options for instances only affect the instance it is changed under. - Optimize pid_list lock contention Whenever the pid_list is read, it uses a spin lock. This happens at every sched switch. Taking the lock at sched switch can be removed by instead using a seqlock counter. - Clean up the trace trigger structures The trigger code uses two different structures to implement a single tigger. This was due to trying to reuse code for the two different types of triggers (always on trigger, and count limited trigger). But by adding a single field to one structure, the other structure could be absorbed into the first structure making he code easier to understand. - Create a bulk garbage collector for trace triggers If user space has triggers for several hundreds of events and then removes them, it can take several seconds to complete. This is because each removal calls the slow tracepoint_synchronize_unregister() that can take hundreds of milliseconds to complete. Instead, create a helper thread that will do the clean up. When a trigger is removed, it will create the kthread if it isn't already created, and then add the trigger to a llist. The kthread will take the items off the llist, call tracepoint_synchronize_unregister(), and then remove the items it took off. It will then check if there's more items to free before sleeping. This makes user space removing all these triggers to finish in less than a second. - Allow function tracing of some of the tracing infrastructure code Because the tracing code can cause recursion issues if it is traced by the function tracer the entire tracing directory disables function tracing. But not all of tracing causes issues if it is traced. Namely, the event tracing code. Add a config that enables some of the tracing code to be traced to help in debugging it. Note, when this is enabled, it does add noise to general function tracing, especially if events are enabled as well (which is a common case). - Add boot-time backup instance for persistent buffer The persistent ring buffer is used mostly for kernel crash analysis in the field. One issue is that if there's a crash, the data in the persistent ring buffer must be read before tracing can begin using it. This slows down the boot process. Once tracing starts in the persistent ring buffer, the old data must be freed and the addresses no longer match and old events can't be in the buffer with new events. Create a way to create a backup buffer that copies the persistent ring buffer at boot up. Then after a crash, the always on tracer can begin immediately as well as the normal boot process while the crash analysis tooling uses the backup buffer. After the backup buffer is finished being read, it can be removed. - Enable function graph args and return address options at the same time Currently the when reading of arguments in the function graph tracer is enabled, the option to record the parent function in the entry event can not be enabled. Update the code so that it can. - Add new struct_offset() helper macro Add a new macro that takes a pointer to a structure and a name of one of its members and it will return the offset of that member. This allows the ring buffer code to simplify the following: From: size = struct_size(entry, buf, cnt - sizeof(entry->id)); To: size = struct_offset(entry, id) + cnt; There should be other simplifications that this macro can help out with as well. -----BEGIN PGP SIGNATURE----- iIoEABYKADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCaS9xqxQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qj6tAQD4MR1lsE3XpH09asO4CDDfhbtRSQVD o8bVKVihWx/j5gD/XezjqE2Q2+DO6dhnsQY6pbtNdXoKgaMuQJGA+dvPsQc= =HilC -----END PGP SIGNATURE----- Merge tag 'trace-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracing updates from Steven Rostedt: - Extend tracing option mask to 64 bits The trace options were defined by a 32 bit variable. This limits the tracing instances to have a total of 32 different options. As that limit has been hit, and more options are being added, increase the option mask to a 64 bit number, doubling the number of options available. As this is required for the kprobe topic branches as well as the tracing topic branch, a separate branch was created and merged into both. - Make trace_user_fault_read() available for the rest of tracing The function trace_user_fault_read() is used by trace_marker file read to allow reading user space to be done fast and without locking or allocations. Make this available so that the system call trace events can use it too. - Have system call trace events read user space values Now that the system call trace events callbacks are called in a faultable context, take advantage of this and read the user space buffers for various system calls. For example, show the path name of the openat system call instead of just showing the pointer to that path name in user space. Also show the contents of the buffer of the write system call. Several system call trace events are updated to make tracing into a light weight strace tool for all applications in the system. - Update perf system call tracing to do the same - And a config and syscall_user_buf_size file to control the size of the buffer Limit the amount of data that can be read from user space. The default size is 63 bytes but that can be expanded to 165 bytes. - Allow the persistent ring buffer to print system calls normally The persistent ring buffer prints trace events by their type and ignores the print_fmt. This is because the print_fmt may change from kernel to kernel. As the system call output is fixed by the system call ABI itself, there's no reason to limit that. This makes reading the system call events in the persistent ring buffer much nicer and easier to understand. - Add options to show text offset to function profiler The function profiler that counts the number of times a function is hit currently lists all functions by its name and offset. But this becomes ambiguous when there are several functions with the same name. Add a tracing option that changes the output to be that of '_text+offset' instead. Now a user space tool can use this information to map the '_text+offset' to the unique function it is counting. - Report bad dynamic event command If a bad command is passed to the dynamic_events file, report it properly in the error log. - Clean up tracer options Clean up the tracer option code a bit, by removing some useless code and also using switch statements instead of a series of if statements. - Have tracing options be instance specific Tracers can have their own options (function tracer, irqsoff tracer, function graph tracer, etc). But now that the same tracer can be enabled in multiple trace instances, their options are still global. The API is per instance, thus changing one affects other instances. This isn't even consistent, as the option take affect differently depending on when an tracer started in an instance. Make the options for instances only affect the instance it is changed under. - Optimize pid_list lock contention Whenever the pid_list is read, it uses a spin lock. This happens at every sched switch. Taking the lock at sched switch can be removed by instead using a seqlock counter. - Clean up the trace trigger structures The trigger code uses two different structures to implement a single tigger. This was due to trying to reuse code for the two different types of triggers (always on trigger, and count limited trigger). But by adding a single field to one structure, the other structure could be absorbed into the first structure making he code easier to understand. - Create a bulk garbage collector for trace triggers If user space has triggers for several hundreds of events and then removes them, it can take several seconds to complete. This is because each removal calls tracepoint_synchronize_unregister() that can take hundreds of milliseconds to complete. Instead, create a helper thread that will do the clean up. When a trigger is removed, it will create the kthread if it isn't already created, and then add the trigger to a llist. The kthread will take the items off the llist, call tracepoint_synchronize_unregister(), and then remove the items it took off. It will then check if there's more items to free before sleeping. This makes user space removing all these triggers to finish in less than a second. - Allow function tracing of some of the tracing infrastructure code Because the tracing code can cause recursion issues if it is traced by the function tracer the entire tracing directory disables function tracing. But not all of tracing causes issues if it is traced. Namely, the event tracing code. Add a config that enables some of the tracing code to be traced to help in debugging it. Note, when this is enabled, it does add noise to general function tracing, especially if events are enabled as well (which is a common case). - Add boot-time backup instance for persistent buffer The persistent ring buffer is used mostly for kernel crash analysis in the field. One issue is that if there's a crash, the data in the persistent ring buffer must be read before tracing can begin using it. This slows down the boot process. Once tracing starts in the persistent ring buffer, the old data must be freed and the addresses no longer match and old events can't be in the buffer with new events. Create a way to create a backup buffer that copies the persistent ring buffer at boot up. Then after a crash, the always on tracer can begin immediately as well as the normal boot process while the crash analysis tooling uses the backup buffer. After the backup buffer is finished being read, it can be removed. - Enable function graph args and return address options at the same time Currently the when reading of arguments in the function graph tracer is enabled, the option to record the parent function in the entry event can not be enabled. Update the code so that it can. - Add new struct_offset() helper macro Add a new macro that takes a pointer to a structure and a name of one of its members and it will return the offset of that member. This allows the ring buffer code to simplify the following: From: size = struct_size(entry, buf, cnt - sizeof(entry->id)); To: size = struct_offset(entry, id) + cnt; There should be other simplifications that this macro can help out with as well * tag 'trace-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (42 commits) overflow: Introduce struct_offset() to get offset of member function_graph: Enable funcgraph-args and funcgraph-retaddr to work simultaneously tracing: Add boot-time backup of persistent ring buffer ftrace: Allow tracing of some of the tracing code tracing: Use strim() in trigger_process_regex() instead of skip_spaces() tracing: Add bulk garbage collection of freeing event_trigger_data tracing: Remove unneeded event_mutex lock in event_trigger_regex_release() tracing: Merge struct event_trigger_ops into struct event_command tracing: Remove get_trigger_ops() and add count_func() from trigger ops tracing: Show the tracer options in boot-time created instance ftrace: Avoid redundant initialization in register_ftrace_direct tracing: Remove unused variable in tracing_trace_options_show() fgraph: Make fgraph_no_sleep_time signed tracing: Convert function graph set_flags() to use a switch() statement tracing: Have function graph tracer option sleep-time be per instance tracing: Move graph-time out of function graph options tracing: Have function graph tracer option funcgraph-irqs be per instance trace/pid_list: optimize pid_list->lock contention tracing: Have function graph tracer define options per instance tracing: Have function tracer define options per instance ...	2025-12-05 09:51:37 -08:00
Linus Torvalds	fa5ef10561	spi: Updates for v6.19 ... This release is almost entirely new drivers, with a couple of small changes in generic code. The biggest individual update is a rename of the existing Microchip driver and the addition of a new driver for the silicon SPI controller in their PolarFire SoCs. The overlap between the soft IP supported by the current driver and this new one is regrettably all in the IP and not in the register interface offered to software. - Add a time offset parameter for offloads, allowing them to be defined in relation to each other. This is useful for IIO type applcations where you trigger an operation then read the result after a delay. - Add a tracepoint for flash exec_ops, bringing the flash support more in line with the debuggability of vanilla SPI. - Support for Airoha EN7523, Arduino MCUs, Aspeed AST2700, Microchip PolarFire SPI controllers, NXP i.MX51 ECSPI target mode, Qualcomm IPQ5414 and IPQ5332, Renesas RZ/T2H, RZ/V2N and RZ/2NH and SpacemiT K1 QuadSPI. There's also a small set of ASoC cleanups that I mistakenly applied to the SPI tree and then put more stuff on top of before it was brought to my attention, sorry about that. -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmkt8qUACgkQJNaLcl1U h9COSAf/buDi3hXYykhEbSlwl839u1XhCU9d8eJF8GhlWR87JeJCb8ou7RdMOQhE HFehdoD2d5EcPc169cDp2uis8LovGZIPWuzh3D83eZpOOQTLMaQYBrDVNquBoKOR WVFPPy9X/kb/IR63vM0b5Xv9K6l3ud4yauIsa0ingl9pZi5m2fB3ZEOx9siYYwAn 4fxv43jESbwdTfx33Yc4CkzctZEKuqI2JgLNe/mJZQsdYhS/nLvmDwiZ69k6b4ac QSHQkP6i+fQzogcbip2z8dA3IUEhDjNQdBbtzmIot8Qbg7zXJkXpAlx2Wstw7Lt8 vLTUY/EHqKh39zok5GECq6E2R6W41w== =Uw2/ -----END PGP SIGNATURE----- Merge tag 'spi-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi Pull spi updates from Mark Brown: "This release is almost entirely new drivers, with a couple of small changes in generic code. The biggest individual update is a rename of the existing Microchip driver and the addition of a new driver for the silicon SPI controller in their PolarFire SoCs. The overlap between the soft IP supported by the current driver and this new one is regrettably all in the IP and not in the register interface offered to software. - Add a time offset parameter for offloads, allowing them to be defined in relation to each other. This is useful for IIO type applcations where you trigger an operation then read the result after a delay. - Add a tracepoint for flash exec_ops, bringing the flash support more in line with the debuggability of vanilla SPI. - Support for Airoha EN7523, Arduino MCUs, Aspeed AST2700, Microchip PolarFire SPI controllers, NXP i.MX51 ECSPI target mode, Qualcomm IPQ5414 and IPQ5332, Renesas RZ/T2H, RZ/V2N and RZ/2NH and SpacemiT K1 QuadSPI. There's also a small set of ASoC cleanups that I mistakenly applied to the SPI tree and then put more stuff on top of before it was brought to my attention, sorry about that" * tag 'spi-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (80 commits) spi: microchip-core: Refactor FIFO read and write handlers spi: ch341: fix out-of-bounds memory access in ch341_transfer_one spi: microchip-core: Remove unneeded PM related macro spi: microchip-core: Use SPI_MODE_X_MASK spi: microchip-core: Utilise temporary variable for struct device spi: microchip-core: Replace dead code (-ENOMEM error message) spi: microchip-core: use min() instead of min_t() spi: dt-bindings: airoha: add compatible for EN7523 spi: airoha-snfi: en7523: workaround flash damaging if UART_TXD was short to GND spi: dt-bindings: renesas,rzv2h-rspi: Document RZ/V2N SoC support spi: dt-bindings: renesas,rzv2h-rspi: Document RZ/V2N SoC support spi: microchip: Enable compile-testing for FPGA SPI controllers spi: Fix potential uninitialized variable in probe() spi: rzv2h-rspi: add support for RZ/T2H and RZ/N2H spi: dt-bindings: renesas,rzv2h-rspi: document RZ/T2H and RZ/N2H spi: rzv2h-rspi: add support for loopback mode spi: rzv2h-rspi: add support for variable transfer clock spi: rzv2h-rspi: add support for using PCLK for transfer clock spi: rzv2h-rspi: make transfer clock rate finding chip-specific spi: rzv2h-rspi: avoid recomputing transfer frequency ...	2025-12-04 11:24:24 -08:00
Linus Torvalds	2aa680df68	sound updates for 6.19-rc1 ... The majority of changes at this time were about ASoC with a lot of code refactoring works. From the functionality POV, there aren't much to see, but we have a wide range of device-specific fixes and updates. Here are some highlights: - Continued ASoC API clean works, spanned over many files - Added a SoundWire SCDA generic class driver with regmap support - Enhancements and fixes for Cirrus, Intel, Maxim and Qualcomm. - Support for ASoC Allwinner A523, Mediatek MT8189, Qualcomm QCM2290, QRB2210 and SM6115, SpacemiT K1, and TI TAS2568, TAS5802, TAS5806, TAS5815, TAS5828 and TAS5830 - Usual HD-audio and USB-audio quirks and fixups - Support for Onkyo SE-300PCIE, TASCAM IF-FW/DM MkII Some gpiolib changes for shared GPIOs are included along with this PR for covering ASoC drivers changes. -----BEGIN PGP SIGNATURE----- iQJCBAABCAAsFiEEIXTw5fNLNI7mMiVaLtJE4w1nLE8FAmkwQ2UOHHRpd2FpQHN1 c2UuZGUACgkQLtJE4w1nLE8tIRAAjCHdIlMejNTCzGRlhsRSQVD6bo1wASXcjfJ6 COH84akbnA0oT5z7H7JnzTOmfjzxLJpwC8j6IpZ/9CQazanT5IIVE41FZquXZ1JB RhQVzuGw9Pl4MaYVdFuRqIXjiP+msY1jpbo9/QXQo8D/B41wpmVTgzkFVW2rxPMy 0aBOu4Wpu+11aBpNBy6dXDiKQ5kDqn7zOLoFGgcf5wlFIvOGZJ0Wg/i0kvCjl+ia xYiP+/F6xKOyTY1c98iqExbKzSSy4ddGFUwrkevm6bWpu8hkXiL1O0zMWOe769x6 0wy0b5zvsbtOQOxbtK5+8gdjJw7ycgDa441hDtsaXBBROYZEV3D6+XZJCfq8Tz8F +vLH5lfZeLg+59eqt3GOMGlwBfuhH91qzukIYG3q9EQGOkNkZ19ySJnFMLom68Ei TCfNzh/ggSGXA9qAmfBcPoizgC/j9o+v4kbLRQteuRRWxES1FxqeN9Ba3d5JcHT3 BQpz1bhUli73477D6voPcwXLiQlM+Alv4QUKTFr2nUnWUQKwMvkZFwiv2jTqVdDf f71Usv7xdyM7XijgmXuLg+3n0UvCwUPBB+bv3a1Bu7G4iTB1deNKU8t9k+sBJpcX aRs5ych3MiU/zG+KRMB5FEx31KzpKu+Kk9NQ207/1HLaNhTgD3cg2wS3T3qdRUPv Yf6wFHs= =1JUI -----END PGP SIGNATURE----- Merge tag 'sound-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound updates from Takashi Iwai: "The majority of changes at this time were about ASoC with a lot of code refactoring works. From the functionality POV, there isn't much to see, but we have a wide range of device-specific fixes and updates. Here are some highlights: - Continued ASoC API cleanup work, spanned over many files - Added a SoundWire SCDA generic class driver with regmap support - Enhancements and fixes for Cirrus, Intel, Maxim and Qualcomm. - Support for ASoC Allwinner A523, Mediatek MT8189, Qualcomm QCM2290, QRB2210 and SM6115, SpacemiT K1, and TI TAS2568, TAS5802, TAS5806, TAS5815, TAS5828 and TAS5830 - Usual HD-audio and USB-audio quirks and fixups - Support for Onkyo SE-300PCIE, TASCAM IF-FW/DM MkII Some gpiolib changes for shared GPIOs are included along with this PR for covering ASoC drivers changes" * tag 'sound-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (739 commits) ALSA: hda/realtek: Add PCI SSIDs to HP ProBook quirks ALSA: usb-audio: Simplify with usb_endpoint_max_periodic_payload() ALSA: hda/realtek: fix mute/micmute LEDs don't work for more HP laptops ALSA: rawmidi: Fix inconsistent indenting warning reported by smatch ALSA: dice: fix buffer overflow in detect_stream_formats() ASoC: codecs: Modify awinic amplifier dsp read and write functions ASoC: SDCA: Fixup some more Kconfig issues ASoC: cs35l56: Log a message if firmware is missing ASoC: nau8325: Delete a stray tab firmware: cs_dsp: Add test cases for client_ops == NULL firmware: cs_dsp: Don't require client to provide a struct cs_dsp_client_ops ASoC: fsl_micfil: Set channel range control ASoC: fsl_micfil: Add default quality for different platforms ASoC: intel: sof_sdw: Add codec_info for cs42l45 ASoC: sdw_utils: Add cs42l45 support functions ASoC: intel: sof_sdw: Add ability to have auxiliary devices ASoC: sdw_utils: Move codec_name to dai info ASoC: sdw_utils: Add codec_conf for every DAI ASoC: SDCA: Add terminal type into input/output widget name ASoC: SDCA: Align mute controls to ALSA expectations ...	2025-12-04 10:08:40 -08:00
Caleb Sander Mateos	f345be751b	io_uring/trace: rename io_uring_queue_async_work event "rw" field ... The io_uring_queue_async_work tracepoint event stores an int rw field that represents whether the work item is hashed. Rename it to "hashed" and change its type to bool to more accurately reflect its value. Signed-off-by: Caleb Sander Mateos <csander@purestorage.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>	2025-12-04 07:18:02 -07:00
Linus Torvalds	fbeea4db51	New features and improvements for the ext4 file system ... * Optimize online defragmentation by using folios instead of individual buffer heads * Improve error codes stored in the superblock when the journal aborts * Minor cleanups and clarifications in ext4_map_blocks() * Add documentation of the casefold and encrypt flags * Add support for file systems with a blocksize greater than the pagesize * Improve performance by enabling the caching the fact that an inode does not have a Posix ACL. Various Bug Fixes * Fix false positive compliants from smatch * Fix error code which is returned by ext4fs_dirhash() when Siphash is used without the encryption key * Fix races when writing to inline data files which could trigger a BUG * Fix potential NULL dereference when there is an corrupt file system with an extended attribute value stored in a inode * Fix false positive lockdep report when syzbot uses ext4 and ocfs2 together * Fix false positive reported by DEPT by adjusting lock annotation * Avoid a potential BUG_ON in jbd2 when a file system is massively corrupted * Fix a WARN_ON when superblock is corrupted with a non-NULL terminated mount options field * Add check if the userspace passes in a non-NULL terminated mount options field to EXT4_IOC_SET_TUNE_SB_PARAM * Fix a potential journal checksum failure whena file system is copied while it is mounted read-only * Fix a potential potential orphan file tracking error which only showed on 32-bit systems * Fix assertion checks in mballoc (which have to be explicitly enbled by manually enabling AGGRESSIVE_CHECKS and recompiling) * Avoid complaining about overly large orphan files created by mke2fs with with file systems with a 64k block size -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAmktFUsACgkQ8vlZVpUN gaPA/Af/WMIK5fHG687JOQUoAnxJ5A89aWrJM7LXIXhfyy/hQ2x/dp7rRHuis+WQ 1AcB7tRN4EuAx+tU8rBKsh7f+xQRkhdl3FHjxAyZdNaVTS/iYh121lMeSDqBVP0V tRSk+9DoahueYBJdHwgtFBd7ZHSKF2haqDW1FIYvFZFWZR1NEzNaoB9O4NO5D1dH RN7nKB/eggOnPelP8FtD83yY3lwCMmxanqZuFCTn9AFcn/o1yo0w+8L+nHKO0n0Z BMbIMLaJ4oJv6G/4vA99btGJjMHKqBqwNNh+2Gq81eubpkutTpTgma6npUBSKdl3 pfWhHzVaa3vVj1Mxc0j4qb1fzlCH8w== =abb+ -----END PGP SIGNATURE----- Merge tag 'ext4_for_linus-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull ext4 updates from Ted Ts'o: "New features and improvements for the ext4 file system: - Optimize online defragmentation by using folios instead of individual buffer heads - Improve error codes stored in the superblock when the journal aborts - Minor cleanups and clarifications in ext4_map_blocks() - Add documentation of the casefold and encrypt flags - Add support for file systems with a blocksize greater than the pagesize - Improve performance by enabling the caching the fact that an inode does not have a Posix ACL Various Bug Fixes: - Fix false positive complaints from smatch - Fix error code which is returned by ext4fs_dirhash() when Siphash is used without the encryption key - Fix races when writing to inline data files which could trigger a BUG - Fix potential NULL dereference when there is an corrupt file system with an extended attribute value stored in a inode - Fix false positive lockdep report when syzbot uses ext4 and ocfs2 together - Fix false positive reported by DEPT by adjusting lock annotation - Avoid a potential BUG_ON in jbd2 when a file system is massively corrupted - Fix a WARN_ON when superblock is corrupted with a non-NULL terminated mount options field - Add check if the userspace passes in a non-NULL terminated mount options field to EXT4_IOC_SET_TUNE_SB_PARAM - Fix a potential journal checksum failure whena file system is copied while it is mounted read-only - Fix a potential potential orphan file tracking error which only showed on 32-bit systems - Fix assertion checks in mballoc (which have to be explicitly enbled by manually enabling AGGRESSIVE_CHECKS and recompiling) - Avoid complaining about overly large orphan files created by mke2fs with with file systems with a 64k block size" * tag 'ext4_for_linus-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (58 commits) ext4: mark inodes without acls in __ext4_iget() ext4: enable block size larger than page size ext4: add checks for large folio incompatibilities when BS > PS ext4: support verifying data from large folios with fs-verity ext4: make data=journal support large block size ext4: support large block size in __ext4_block_zero_page_range() ext4: support large block size in mpage_prepare_extent_to_map() ext4: support large block size in mpage_map_and_submit_buffers() ext4: support large block size in ext4_block_write_begin() ext4: support large block size in ext4_mpage_readpages() ext4: rename 'page' references to 'folio' in multi-block allocator ext4: prepare buddy cache inode for BS > PS with large folios ext4: support large block size in ext4_mb_init_cache() ext4: support large block size in ext4_mb_get_buddy_page_lock() ext4: support large block size in ext4_mb_load_buddy_gfp() ext4: add EXT4_LBLK_TO_PG and EXT4_PG_TO_LBLK for block/page conversion ext4: add EXT4_LBLK_TO_B macro for logical block to bytes conversion ext4: support large block size in ext4_readdir() ext4: support large block size in ext4_calculate_overhead() ext4: introduce s_min_folio_order for future BS > PS support ...	2025-12-03 20:37:15 -08:00
YH Lin	8d1cb17aca	f2fs: optimize trace_f2fs_write_checkpoint with enums ... This patch optimizes the tracepoint by replacing these hardcoded strings with a new enumeration f2fs_cp_phase. 1.Defines enum f2fs_cp_phase with values for each checkpoint phase. 2.Updates trace_f2fs_write_checkpoint to accept a u16 phase argument instead of a string pointer. 3.Uses __print_symbolic in TP_printk to convert the enum values back to their corresponding strings for human-readable trace output. This change reduces the storage overhead for each trace event by replacing a variable-length string with a 2-byte integer, while maintaining the same readable output in ftrace. Signed-off-by: YH Lin <yhli@google.com> Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>	2025-12-04 02:00:06 +00:00
Jaegeuk Kim	2e2e0d679a	f2fs: add fadvise tracepoint ... This adds a tracepoint in the fadvise call path. Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>	2025-12-04 02:00:03 +00:00
Chao Yu	5b5578c3b0	f2fs: fix to access i_size w/ i_size_read() ... It recommends to use i_size_{read,write}() to access and update i_size, otherwise, we may get wrong tearing value due to high 32-bits value and low 32-bits value of i_size field are not updated atomically in 32-bits archicture machine. Signed-off-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>	2025-12-04 02:00:03 +00:00
Linus Torvalds	8f7aa3d3c7	Networking changes for 6.19. ... Core & protocols ---------------- - Replace busylock at the Tx queuing layer with a lockless list. Resulting in a 300% (4x) improvement on heavy TX workloads, sending twice the number of packets per second, for half the cpu cycles. - Allow constantly busy flows to migrate to a more suitable CPU/NIC queue. Normally we perform queue re-selection when flow comes out of idle, but under extreme circumstances the flows may be constantly busy. Add sysctl to allow periodic rehashing even if it'd risk packet reordering. - Optimize the NAPI skb cache, make it larger, use it in more paths. - Attempt returning Tx skbs to the originating CPU (like we already did for Rx skbs). - Various data structure layout and prefetch optimizations from Eric. - Remove ktime_get() from the recvmsg() fast path, ktime_get() is sadly quite expensive on recent AMD machines. - Extend threaded NAPI polling to allow the kthread busy poll for packets. - Make MPTCP use Rx backlog processing. This lowers the lock pressure, improving the Rx performance. - Support memcg accounting of MPTCP socket memory. - Allow admin to opt sockets out of global protocol memory accounting (using a sysctl or BPF-based policy). The global limits are a poor fit for modern container workloads, where limits are imposed using cgroups. - Improve heuristics for when to kick off AF_UNIX garbage collection. - Allow users to control TCP SACK compression, and default to 33% of RTT. - Add tcp_rcvbuf_low_rtt sysctl to let datacenter users avoid unnecessarily aggressive rcvbuf growth and overshot when the connection RTT is low. - Preserve skb metadata space across skb_push / skb_pull operations. - Support for IPIP encapsulation in the nftables flowtable offload. - Support appending IP interface information to ICMP messages (RFC 5837). - Support setting max record size in TLS (RFC 8449). - Remove taking rtnl_lock from RTM_GETNEIGHTBL and RTM_SETNEIGHTBL. - Use a dedicated lock (and RCU) in MPLS, instead of rtnl_lock. - Let users configure the number of write buffers in SMC. - Add new struct sockaddr_unsized for sockaddr of unknown length, from Kees. - Some conversions away from the crypto_ahash API, from Eric Biggers. - Some preparations for slimming down struct page. - YAML Netlink protocol spec for WireGuard. - Add a tool on top of YAML Netlink specs/lib for reporting commonly computed derived statistics and summarized system state. Driver API ---------- - Add CAN XL support to the CAN Netlink interface. - Add uAPI for reporting PHY Mean Square Error (MSE) diagnostics, as defined by the OPEN Alliance's "Advanced diagnostic features for 100BASE-T1 automotive Ethernet PHYs" specification. - Add DPLL phase-adjust-gran pin attribute (and implement it in zl3073x). - Refactor xfrm_input lock to reduce contention when NIC offloads IPsec and performs RSS. - Add info to devlink params whether the current setting is the default or a user override. Allow resetting back to default. - Add standard device stats for PSP crypto offload. - Leverage DSA frame broadcast to implement simple HSR frame duplication for a lot of switches without dedicated HSR offload. - Add uAPI defines for 1.6Tbps link modes. Device drivers -------------- - Add Motorcomm YT921x gigabit Ethernet switch support. - Add MUCSE driver for N500/N210 1GbE NIC series. - Convert drivers to support dedicated ops for timestamping control, and away from the direct IOCTL handling. While at it support GET operations for PHY timestamping. - Add (and convert most drivers to) a dedicated ethtool callback for reading the Rx ring count. - Significant refactoring efforts in the STMMAC driver, which supports Synopsys turn-key MAC IP integrated into a ton of SoCs. - Ethernet high-speed NICs: - Broadcom (bnxt): - support PPS in/out on all pins - Intel (100G, ice, idpf): - ice: implement standard ethtool and timestamping stats - i40e: support setting the max number of MAC addresses per VF - iavf: support RSS of GTP tunnels for 5G and LTE deployments - nVidia/Mellanox (mlx5): - reduce downtime on interface reconfiguration - disable being an XDP redirect target by default (same as other drivers) to avoid wasting resources if feature is unused - Meta (fbnic): - add support for Linux-managed PCS on 25G, 50G, and 100G links - Wangxun: - support Rx descriptor merge, and Tx head writeback - support Rx coalescing offload - support 25G SPF and 40G QSFP modules - Ethernet virtual: - Google (gve): - allow ethtool to configure rx_buf_len - implement XDP HW RX Timestamping support for DQ descriptor format - Microsoft vNIC (mana): - support HW link state events - handle hardware recovery events when probing the device - Ethernet NICs consumer, and embedded: - usbnet: add support for Byte Queue Limits (BQL) - AMD (amd-xgbe): - add device selftests - NXP (enetc): - add i.MX94 support - Broadcom integrated MACs (bcmgenet, bcmasp): - bcmasp: add support for PHY-based Wake-on-LAN - Broadcom switches (b53): - support port isolation - support BCM5389/97/98 and BCM63XX ARL formats - Lantiq/MaxLinear switches: - support bridge FDB entries on the CPU port - use regmap for register access - allow user to enable/disable learning - support Energy Efficient Ethernet - support configuring RMII clock delays - add tagging driver for MaxLinear GSW1xx switches - Synopsys (stmmac): - support using the HW clock in free running mode - add Eswin EIC7700 support - add Rockchip RK3506 support - add Altera Agilex5 support - Cadence (macb): - cleanup and consolidate descriptor and DMA address handling - add EyeQ5 support - TI: - icssg-prueth: support AF_XDP - Airoha access points: - add missing Ethernet stats and link state callback - add AN7583 support - support out-of-order Tx completion processing - Power over Ethernet: - pd692x0: preserve PSE configuration across reboots - add support for TPS23881B devices - Ethernet PHYs: - Open Alliance OATC14 10BASE-T1S PHY cable diagnostic support - Support 50G SerDes and 100G interfaces in Linux-managed PHYs - micrel: - support for non PTP SKUs of lan8814 - enable in-band auto-negotiation on lan8814 - realtek: - cable testing support on RTL8224 - interrupt support on RTL8221B - motorcomm: support for PHY LEDs on YT853 - microchip: support for LAN867X Rev.D0 PHYs w/ SQI and cable diag - mscc: support for PHY LED control - CAN drivers: - m_can: add support for optional reset and system wake up - remove can_change_mtu() obsoleted by core handling - mcp251xfd: support GPIO controller functionality - Bluetooth: - add initial support for PASTa - WiFi: - split ieee80211.h file, it's way too big - improvements in VHT radiotap reporting, S1G, Channel Switch Announcement handling, rate tracking in mesh networks - improve multi-radio monitor mode support, and add a cfg80211 debugfs interface for it - HT action frame handling on 6 GHz - initial chanctx work towards NAN - MU-MIMO sniffer improvements - WiFi drivers: - RealTek (rtw89): - support USB devices RTL8852AU and RTL8852CU - initial work for RTL8922DE - improved injection support - Intel: - iwlwifi: new sniffer API support - MediaTek (mt76): - WED support for >32-bit DMA - airoha NPU support - regdomain improvements - continued WiFi7/MLO work - Qualcomm/Atheros: - ath10k: factory test support - ath11k: TX power insertion support - ath12k: BSS color change support - ath12k: statistics improvements - brcmfmac: Acer A1 840 tablet quirk - rtl8xxxu: 40 MHz connection fixes/support Signed-off-by: Jakub Kicinski <kuba@kernel.org> -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE6jPA+I1ugmIBA4hXMUZtbf5SIrsFAmkveRQACgkQMUZtbf5S IrvY7A/+Nb0o4BxLHjPkAl1m3t3q2d0Y29B7SNkwnwEtxAV8EkNeZ3GWrdtDnTQY MYhmc7LEzvz8/lihapr7UJkcokzSASUV54hbez5jDBKC8EEoyUk8FdWDPerwlcRI zmCFNAVFyh9GX8i7wcrzKbDTHT5+GZLbSlGl9U5mhLsDdRlJgH7d8PJ7vWcmtLFY XN0paDyaeHfCl8wReWNAYx4C/I0ODOvlscpO0tnAKhB0ngJbQCKY2t6tn3rOYdif ZSQ5KwVRnJtQ4fYOFMOy9+FSCjVXtyrxF8KLxD+mqom2ZhmO00UpOMl09tqhq3uT WnvwoHUVBt6F+iITHwg5kMgIDPUq1kpUvL4S4UbVSuUm9ZKD+4KRU2ZHRBYMx+MU bsqmtY8/IULClUoRz+tZhltA8eb0NEqNZE2JPOFDiJHn1YiCCkFwxibhir893oM3 sB7x65D7LQI2ty2BBGVGYnwYDPtyaxOA/s3WTwPvLEi3+Y/TGNIIrS9lBLA4U+Yr Gi93WQGVjttMmVyaHgXBUGmi3L52hvolm0AZ8zSRGrnIEpecjhly2KfYuaOzuxXC IHEQ6AFLdRh6JzafXGb/mQwGCHNmhwsY8A49i94fakWQamaL/L6A+1dyPu4LXMqi NwqCmlVb/LKGlfNG+V4wT27srJ+yBA2Vk3tpR1sZQQytFh0LKHI= =UoDR -----END PGP SIGNATURE----- Merge tag 'net-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core & protocols: - Replace busylock at the Tx queuing layer with a lockless list. Resulting in a 300% (4x) improvement on heavy TX workloads, sending twice the number of packets per second, for half the cpu cycles. - Allow constantly busy flows to migrate to a more suitable CPU/NIC queue. Normally we perform queue re-selection when flow comes out of idle, but under extreme circumstances the flows may be constantly busy. Add sysctl to allow periodic rehashing even if it'd risk packet reordering. - Optimize the NAPI skb cache, make it larger, use it in more paths. - Attempt returning Tx skbs to the originating CPU (like we already did for Rx skbs). - Various data structure layout and prefetch optimizations from Eric. - Remove ktime_get() from the recvmsg() fast path, ktime_get() is sadly quite expensive on recent AMD machines. - Extend threaded NAPI polling to allow the kthread busy poll for packets. - Make MPTCP use Rx backlog processing. This lowers the lock pressure, improving the Rx performance. - Support memcg accounting of MPTCP socket memory. - Allow admin to opt sockets out of global protocol memory accounting (using a sysctl or BPF-based policy). The global limits are a poor fit for modern container workloads, where limits are imposed using cgroups. - Improve heuristics for when to kick off AF_UNIX garbage collection. - Allow users to control TCP SACK compression, and default to 33% of RTT. - Add tcp_rcvbuf_low_rtt sysctl to let datacenter users avoid unnecessarily aggressive rcvbuf growth and overshot when the connection RTT is low. - Preserve skb metadata space across skb_push / skb_pull operations. - Support for IPIP encapsulation in the nftables flowtable offload. - Support appending IP interface information to ICMP messages (RFC 5837). - Support setting max record size in TLS (RFC 8449). - Remove taking rtnl_lock from RTM_GETNEIGHTBL and RTM_SETNEIGHTBL. - Use a dedicated lock (and RCU) in MPLS, instead of rtnl_lock. - Let users configure the number of write buffers in SMC. - Add new struct sockaddr_unsized for sockaddr of unknown length, from Kees. - Some conversions away from the crypto_ahash API, from Eric Biggers. - Some preparations for slimming down struct page. - YAML Netlink protocol spec for WireGuard. - Add a tool on top of YAML Netlink specs/lib for reporting commonly computed derived statistics and summarized system state. Driver API: - Add CAN XL support to the CAN Netlink interface. - Add uAPI for reporting PHY Mean Square Error (MSE) diagnostics, as defined by the OPEN Alliance's "Advanced diagnostic features for 100BASE-T1 automotive Ethernet PHYs" specification. - Add DPLL phase-adjust-gran pin attribute (and implement it in zl3073x). - Refactor xfrm_input lock to reduce contention when NIC offloads IPsec and performs RSS. - Add info to devlink params whether the current setting is the default or a user override. Allow resetting back to default. - Add standard device stats for PSP crypto offload. - Leverage DSA frame broadcast to implement simple HSR frame duplication for a lot of switches without dedicated HSR offload. - Add uAPI defines for 1.6Tbps link modes. Device drivers: - Add Motorcomm YT921x gigabit Ethernet switch support. - Add MUCSE driver for N500/N210 1GbE NIC series. - Convert drivers to support dedicated ops for timestamping control, and away from the direct IOCTL handling. While at it support GET operations for PHY timestamping. - Add (and convert most drivers to) a dedicated ethtool callback for reading the Rx ring count. - Significant refactoring efforts in the STMMAC driver, which supports Synopsys turn-key MAC IP integrated into a ton of SoCs. - Ethernet high-speed NICs: - Broadcom (bnxt): - support PPS in/out on all pins - Intel (100G, ice, idpf): - ice: implement standard ethtool and timestamping stats - i40e: support setting the max number of MAC addresses per VF - iavf: support RSS of GTP tunnels for 5G and LTE deployments - nVidia/Mellanox (mlx5): - reduce downtime on interface reconfiguration - disable being an XDP redirect target by default (same as other drivers) to avoid wasting resources if feature is unused - Meta (fbnic): - add support for Linux-managed PCS on 25G, 50G, and 100G links - Wangxun: - support Rx descriptor merge, and Tx head writeback - support Rx coalescing offload - support 25G SPF and 40G QSFP modules - Ethernet virtual: - Google (gve): - allow ethtool to configure rx_buf_len - implement XDP HW RX Timestamping support for DQ descriptor format - Microsoft vNIC (mana): - support HW link state events - handle hardware recovery events when probing the device - Ethernet NICs consumer, and embedded: - usbnet: add support for Byte Queue Limits (BQL) - AMD (amd-xgbe): - add device selftests - NXP (enetc): - add i.MX94 support - Broadcom integrated MACs (bcmgenet, bcmasp): - bcmasp: add support for PHY-based Wake-on-LAN - Broadcom switches (b53): - support port isolation - support BCM5389/97/98 and BCM63XX ARL formats - Lantiq/MaxLinear switches: - support bridge FDB entries on the CPU port - use regmap for register access - allow user to enable/disable learning - support Energy Efficient Ethernet - support configuring RMII clock delays - add tagging driver for MaxLinear GSW1xx switches - Synopsys (stmmac): - support using the HW clock in free running mode - add Eswin EIC7700 support - add Rockchip RK3506 support - add Altera Agilex5 support - Cadence (macb): - cleanup and consolidate descriptor and DMA address handling - add EyeQ5 support - TI: - icssg-prueth: support AF_XDP - Airoha access points: - add missing Ethernet stats and link state callback - add AN7583 support - support out-of-order Tx completion processing - Power over Ethernet: - pd692x0: preserve PSE configuration across reboots - add support for TPS23881B devices - Ethernet PHYs: - Open Alliance OATC14 10BASE-T1S PHY cable diagnostic support - Support 50G SerDes and 100G interfaces in Linux-managed PHYs - micrel: - support for non PTP SKUs of lan8814 - enable in-band auto-negotiation on lan8814 - realtek: - cable testing support on RTL8224 - interrupt support on RTL8221B - motorcomm: support for PHY LEDs on YT853 - microchip: support for LAN867X Rev.D0 PHYs w/ SQI and cable diag - mscc: support for PHY LED control - CAN drivers: - m_can: add support for optional reset and system wake up - remove can_change_mtu() obsoleted by core handling - mcp251xfd: support GPIO controller functionality - Bluetooth: - add initial support for PASTa - WiFi: - split ieee80211.h file, it's way too big - improvements in VHT radiotap reporting, S1G, Channel Switch Announcement handling, rate tracking in mesh networks - improve multi-radio monitor mode support, and add a cfg80211 debugfs interface for it - HT action frame handling on 6 GHz - initial chanctx work towards NAN - MU-MIMO sniffer improvements - WiFi drivers: - RealTek (rtw89): - support USB devices RTL8852AU and RTL8852CU - initial work for RTL8922DE - improved injection support - Intel: - iwlwifi: new sniffer API support - MediaTek (mt76): - WED support for >32-bit DMA - airoha NPU support - regdomain improvements - continued WiFi7/MLO work - Qualcomm/Atheros: - ath10k: factory test support - ath11k: TX power insertion support - ath12k: BSS color change support - ath12k: statistics improvements - brcmfmac: Acer A1 840 tablet quirk - rtl8xxxu: 40 MHz connection fixes/support" * tag 'net-next-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1381 commits) net: page_pool: sanitise allocation order net: page pool: xa init with destroy on pp init net/mlx5e: Support XDP target xmit with dummy program net/mlx5e: Update XDP features in switch channels selftests/tc-testing: Test CAKE scheduler when enqueue drops packets net/sched: sch_cake: Fix incorrect qlen reduction in cake_drop wireguard: netlink: generate netlink code wireguard: uapi: generate header with ynl-gen wireguard: uapi: move flag enums wireguard: uapi: move enum wg_cmd wireguard: netlink: add YNL specification selftests: drv-net: Fix tolerance calculation in devlink_rate_tc_bw.py selftests: drv-net: Fix and clarify TC bandwidth split in devlink_rate_tc_bw.py selftests: drv-net: Set shell=True for sysfs writes in devlink_rate_tc_bw.py selftests: drv-net: Use Iperf3Runner in devlink_rate_tc_bw.py selftests: drv-net: introduce Iperf3Runner for measurement use cases selftests: drv-net: Add devlink_rate_tc_bw.py to TEST_PROGS net: ps3_gelic_net: Use napi_alloc_skb() and napi_gro_receive() Documentation: net: dsa: mention simple HSR offload helpers Documentation: net: dsa: mention availability of RedBox ...	2025-12-03 17:24:33 -08:00
Linus Torvalds	02baaa67d9	sched_ext: Changes for v6.19 ... - Improve recovery from misbehaving BPF schedulers. When a scheduler puts many tasks with varying affinity restrictions on a shared DSQ, CPUs scanning through tasks they cannot run can overwhelm the system, causing lockups. Bypass mode now uses per-CPU DSQs with a load balancer to avoid this, and hooks into the hardlockup detector to attempt recovery. Add scx_cpu0 example scheduler to demonstrate this scenario. - Add lockless peek operation for DSQs to reduce lock contention for schedulers that need to query queue state during load balancing. - Allow scx_bpf_reenqueue_local() to be called from anywhere in preparation for deprecating cpu_acquire/release() callbacks in favor of generic BPF hooks. - Prepare for hierarchical scheduler support: add scx_bpf_task_set_slice() and scx_bpf_task_set_dsq_vtime() kfuncs, make scx_bpf_dsq_insert*() return bool, and wrap kfunc args in structs for future aux__prog parameter. - Implement cgroup_set_idle() callback to notify BPF schedulers when a cgroup's idle state changes. - Fix migration tasks being incorrectly downgraded from stop_sched_class to rt_sched_class across sched_ext enable/disable. Applied late as the fix is low risk and the bug subtle but needs stable backporting. - Various fixes and cleanups including cgroup exit ordering, SCX_KICK_WAIT reliability, and backward compatibility improvements. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCaS4h1A4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGe/MAP9EZ0pLiTpmMtt6mI/11Fmi+aWfL84j1zt13cz9 W4vb4gEA9eVEH6n9xyC4nhcOk9AQwSDuCWMOzLsnhW8TbEHVTww= =8W/B -----END PGP SIGNATURE----- Merge tag 'sched_ext-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext Pull sched_ext updates from Tejun Heo: - Improve recovery from misbehaving BPF schedulers. When a scheduler puts many tasks with varying affinity restrictions on a shared DSQ, CPUs scanning through tasks they cannot run can overwhelm the system, causing lockups. Bypass mode now uses per-CPU DSQs with a load balancer to avoid this, and hooks into the hardlockup detector to attempt recovery. Add scx_cpu0 example scheduler to demonstrate this scenario. - Add lockless peek operation for DSQs to reduce lock contention for schedulers that need to query queue state during load balancing. - Allow scx_bpf_reenqueue_local() to be called from anywhere in preparation for deprecating cpu_acquire/release() callbacks in favor of generic BPF hooks. - Prepare for hierarchical scheduler support: add scx_bpf_task_set_slice() and scx_bpf_task_set_dsq_vtime() kfuncs, make scx_bpf_dsq_insert*() return bool, and wrap kfunc args in structs for future aux__prog parameter. - Implement cgroup_set_idle() callback to notify BPF schedulers when a cgroup's idle state changes. - Fix migration tasks being incorrectly downgraded from stop_sched_class to rt_sched_class across sched_ext enable/disable. Applied late as the fix is low risk and the bug subtle but needs stable backporting. - Various fixes and cleanups including cgroup exit ordering, SCX_KICK_WAIT reliability, and backward compatibility improvements. * tag 'sched_ext-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext: (44 commits) sched_ext: Fix incorrect sched_class settings for per-cpu migration tasks sched_ext: tools: Removing duplicate targets during non-cross compilation sched_ext: Use kvfree_rcu() to release per-cpu ksyncs object sched_ext: Pass locked CPU parameter to scx_hardlockup() and add docs sched_ext: Update comments replacing breather with aborting mechanism sched_ext: Implement load balancer for bypass mode sched_ext: Factor out abbreviated dispatch dequeue into dispatch_dequeue_locked() sched_ext: Factor out scx_dsq_list_node cursor initialization into INIT_DSQ_LIST_CURSOR sched_ext: Add scx_cpu0 example scheduler sched_ext: Hook up hardlockup detector sched_ext: Make handle_lockup() propagate scx_verror() result sched_ext: Refactor lockup handlers into handle_lockup() sched_ext: Make scx_exit() and scx_vexit() return bool sched_ext: Exit dispatch and move operations immediately when aborting sched_ext: Simplify breather mechanism with scx_aborting flag sched_ext: Use per-CPU DSQs instead of per-node global DSQs in bypass mode sched_ext: Refactor do_enqueue_task() local and global DSQ paths sched_ext: Use shorter slice in bypass mode sched_ext: Mark racy bitfields to prevent adding fields that can't tolerate races sched_ext: Minor cleanups to scx_task_iter ...	2025-12-03 13:25:39 -08:00
Linus Torvalds	d348c22394	Power management updates for 6.19-rc1 ... - Introduce and document a QoS limit on CPU exit latency during wakeup from suspend-to-idle (Ulf Hansson) - Add support for building libcpupower statically (Zuo An) - Add support for sending netlink notifications to user space on energy model updates (Changwoo Mini, Peng Fan) - Minor improvements to the Rust OPP interface (Tamir Duberstein) - Fixes to scope-based pointers in the OPP library (Viresh Kumar) - Use residency threshold in polling state override decisions in the menu cpuidle governor (Aboorva Devarajan) - Add sanity check for exit latency and target residency in the cpufreq core (Rafael Wysocki) - Use this_cpu_ptr() where possible in the teo governor (Christian Loehle) - Rework the handling of tick wakeups in the teo cpuidle governor to increase the likelihood of stopping the scheduler tick in the cases when tick wakeups can be counted as non-timer ones (Rafael Wysocki) - Fix a reverse condition in the teo cpuidle governor and drop a misguided target residency check from it (Rafael Wysocki) - Clean up multiple minor defects in the teo cpuidle governor (Rafael Wysocki) - Update header inclusion to make it follow the Include What You Use principle (Andy Shevchenko) - Enable MSR-based RAPL PMU support in the intel_rapl power capping driver and arrange for using it on the Panther Lake and Wildcat Lake processors (Kuppuswamy Sathyanarayanan) - Add support for Nova Lake and Wildcat Lake processors to the intel_rapl power capping driver (Kaushlendra Kumar, Srinivas Pandruvada) - Add OPP and bandwidth support for Tegra186 (Aaron Kling) - Optimizations for parameter array handling in the amd-pstate cpufreq driver (Mario Limonciello) - Fix for mode changes with offline CPUs in the amd-pstate cpufreq driver (Gautham Shenoy) - Preserve freq_table_sorted across suspend/hibernate in the cpufreq core (Zihuan Zhang) - Adjust energy model rules for Intel hybrid platforms in the intel_pstate cpufreq driver and improve printing of debug messages in it (Rafael Wysocki) - Replace deprecated strcpy() in cpufreq_unregister_governor() (Thorsten Blum) - Fix duplicate hyperlink target errors in the intel_pstate cpufreq driver documentation and use :ref: directive for internal linking in it (Swaraj Gaikwad, Bagas Sanjaya) - Add Diamond Rapids OOB mode support to the intel_pstate cpufreq driver (Kuppuswamy Sathyanarayanan) - Use mutex guard for driver locking in the intel_pstate driver and eliminate some code duplication from it (Rafael Wysocki) - Replace udelay() with usleep_range() in ACPI cpufreq (Kaushlendra Kumar) - Minor improvements to various cpufreq drivers (Christian Marangi, Hal Feng, Jie Zhan, Marco Crivellari, Miaoqian Lin, and Shuhao Fu) - Replace snprintf() with scnprintf() in show_trace_dev_match() (Kaushlendra Kumar) - Fix memory allocation error handling in pm_vt_switch_required() (Malaya Kumar Rout) - Introduce CALL_PM_OP() macro and use it to simplify code in generic PM operations (Kaushlendra Kumar) - Add module param to backtrace all CPUs in the device power management watchdog (Sergey Senozhatsky) - Rework message printing in swsusp_save() (Rafael Wysocki) - Make it possible to change the number of hibernation compression threads (Xueqin Luo) - Clarify that only cgroup1 freezer uses PM freezer (Tejun Heo) - Add document on debugging shutdown hangs to PM documentation and correct a mistaken configuration option in it (Mario Limonciello) - Shut down wakeup source timer before removing the wakeup source from the list (Kaushlendra Kumar, Rafael Wysocki) - Introduce new PMSG_POWEROFF event for system shutdown handling with the help of PM device callbacks (Mario Limonciello) - Make pm_test delay interruptible by wakeup events (Riwen Lu) - Clean up kernel-doc comment style usage in the core hibernation code and remove unuseful comments from it (Sunday Adelodun, Rafael Wysocki) - Add support for handling wakeup events and aborting the suspend process while it is syncing file systems (Samuel Wu, Rafael Wysocki) - Add WQ_UNBOUND to pm_wq workqueue (Marco Crivellari) - Add runtime PM wrapper macros for ACQUIRE()/ACQUIRE_ERR() and use them in the PCI core and the ACPI TAD driver (Rafael Wysocki) - Improve runtime PM in the ACPI TAD driver (Rafael Wysocki) - Update pm_runtime_allow/forbid() documentation (Rafael Wysocki) - Fix typos in runtime.c comments (Malaya Kumar Rout) - Move governor.h from devfreq under include/linux/ and rename to devfreq-governor.h to allow devfreq governor definitions in out of drivers/devfreq/ (Dmitry Baryshkov) - Use min() to improve readability in tegra30-devfreq.c (Thorsten Blum) - Fix potential use-after-free issue of OPP handling in hisi_uncore_freq.c (Pengjie Zhang) - Fix typo in DFSO_DOWNDIFFERENTIAL macro name in governor_simpleondemand.c in devfreq (Riwen Lu) -----BEGIN PGP SIGNATURE----- iQFGBAABCAAwFiEEcM8Aw/RY0dgsiRUR7l+9nS/U47UFAmkp0BYSHHJqd0Byand5 c29ja2kubmV0AAoJEO5fvZ0v1OO1Pc8H/2G5d0aD/ym1a8MDTpKqn7t3/rVMHa76 YGfxXMBr1oY++r5GTJTKBxZBHmF89VH71kdyvsMidTAtHjR+iZAS1ajd2Q5VYjOF QNMld1qgPEzAZU8WSetDrBqMr89zls05Uubo4aCoNy6rFmgRaLHh3AmIKSS9aJuo C1eH8dRONME5I/rafkOUpFs1+/Agq1vePwPZmwVnZX9A3qI+UOhMRdU9A37kYkx9 YwfQvR2fKTIPjZ6B9f/wGXPOvdrT37d4+dWT3EABOHMkxlpAPDMvmVzZsUaXSQMr 0d9NGEjPGo33qciKJJpHqNOdDOhi90606WBBf7aaMF+GMhDX3PznOK4= =rzXO -----END PGP SIGNATURE----- Merge tag 'pm-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management updates from Rafael Wysocki: "There are quite a few interesting things here, including new hardware support, new features, some bug fixes and documentation updates. In addition, there are a usual bunch of minor fixes and cleanups all over. In the new hardware support category, there are intel_pstate and intel_rapl driver updates to support new processors, Panther Lake, Wildcat Lake, Noval Lake, and Diamond Rapids in the OOB mode, OPP and bandwidth allocation support in the tegra186 cpufreq driver, and JH7110S SOC support in dt-platdev cpufreq. The new features are the PM QoS CPU latency limit for suspend-to-idle, the netlink support for the energy model management, support for terminating system suspend via a wakeup event during the sync of file systems, configurable number of hibernation compression threads, the runtime PM auto-cleanup macros, and the "poweroff" PM event that is expected to be used during system shutdown. Bugs are mostly fixed in cpuidle governors, but there are also fixes elsewhere, like in the amd-pstate cpufreq driver. Documentation updates include, but are not limited to, a new doc on debugging shutdown hangs, cross-referencing fixes and cleanups in the intel_pstate documentation, and updates of comments in the core hibernation code. Specifics: - Introduce and document a QoS limit on CPU exit latency during wakeup from suspend-to-idle (Ulf Hansson) - Add support for building libcpupower statically (Zuo An) - Add support for sending netlink notifications to user space on energy model updates (Changwoo Mini, Peng Fan) - Minor improvements to the Rust OPP interface (Tamir Duberstein) - Fixes to scope-based pointers in the OPP library (Viresh Kumar) - Use residency threshold in polling state override decisions in the menu cpuidle governor (Aboorva Devarajan) - Add sanity check for exit latency and target residency in the cpufreq core (Rafael Wysocki) - Use this_cpu_ptr() where possible in the teo governor (Christian Loehle) - Rework the handling of tick wakeups in the teo cpuidle governor to increase the likelihood of stopping the scheduler tick in the cases when tick wakeups can be counted as non-timer ones (Rafael Wysocki) - Fix a reverse condition in the teo cpuidle governor and drop a misguided target residency check from it (Rafael Wysocki) - Clean up multiple minor defects in the teo cpuidle governor (Rafael Wysocki) - Update header inclusion to make it follow the Include What You Use principle (Andy Shevchenko) - Enable MSR-based RAPL PMU support in the intel_rapl power capping driver and arrange for using it on the Panther Lake and Wildcat Lake processors (Kuppuswamy Sathyanarayanan) - Add support for Nova Lake and Wildcat Lake processors to the intel_rapl power capping driver (Kaushlendra Kumar, Srinivas Pandruvada) - Add OPP and bandwidth support for Tegra186 (Aaron Kling) - Optimizations for parameter array handling in the amd-pstate cpufreq driver (Mario Limonciello) - Fix for mode changes with offline CPUs in the amd-pstate cpufreq driver (Gautham Shenoy) - Preserve freq_table_sorted across suspend/hibernate in the cpufreq core (Zihuan Zhang) - Adjust energy model rules for Intel hybrid platforms in the intel_pstate cpufreq driver and improve printing of debug messages in it (Rafael Wysocki) - Replace deprecated strcpy() in cpufreq_unregister_governor() (Thorsten Blum) - Fix duplicate hyperlink target errors in the intel_pstate cpufreq driver documentation and use :ref: directive for internal linking in it (Swaraj Gaikwad, Bagas Sanjaya) - Add Diamond Rapids OOB mode support to the intel_pstate cpufreq driver (Kuppuswamy Sathyanarayanan) - Use mutex guard for driver locking in the intel_pstate driver and eliminate some code duplication from it (Rafael Wysocki) - Replace udelay() with usleep_range() in ACPI cpufreq (Kaushlendra Kumar) - Minor improvements to various cpufreq drivers (Christian Marangi, Hal Feng, Jie Zhan, Marco Crivellari, Miaoqian Lin, and Shuhao Fu) - Replace snprintf() with scnprintf() in show_trace_dev_match() (Kaushlendra Kumar) - Fix memory allocation error handling in pm_vt_switch_required() (Malaya Kumar Rout) - Introduce CALL_PM_OP() macro and use it to simplify code in generic PM operations (Kaushlendra Kumar) - Add module param to backtrace all CPUs in the device power management watchdog (Sergey Senozhatsky) - Rework message printing in swsusp_save() (Rafael Wysocki) - Make it possible to change the number of hibernation compression threads (Xueqin Luo) - Clarify that only cgroup1 freezer uses PM freezer (Tejun Heo) - Add document on debugging shutdown hangs to PM documentation and correct a mistaken configuration option in it (Mario Limonciello) - Shut down wakeup source timer before removing the wakeup source from the list (Kaushlendra Kumar, Rafael Wysocki) - Introduce new PMSG_POWEROFF event for system shutdown handling with the help of PM device callbacks (Mario Limonciello) - Make pm_test delay interruptible by wakeup events (Riwen Lu) - Clean up kernel-doc comment style usage in the core hibernation code and remove unuseful comments from it (Sunday Adelodun, Rafael Wysocki) - Add support for handling wakeup events and aborting the suspend process while it is syncing file systems (Samuel Wu, Rafael Wysocki) - Add WQ_UNBOUND to pm_wq workqueue (Marco Crivellari) - Add runtime PM wrapper macros for ACQUIRE()/ACQUIRE_ERR() and use them in the PCI core and the ACPI TAD driver (Rafael Wysocki) - Improve runtime PM in the ACPI TAD driver (Rafael Wysocki) - Update pm_runtime_allow/forbid() documentation (Rafael Wysocki) - Fix typos in runtime.c comments (Malaya Kumar Rout) - Move governor.h from devfreq under include/linux/ and rename to devfreq-governor.h to allow devfreq governor definitions in out of drivers/devfreq/ (Dmitry Baryshkov) - Use min() to improve readability in tegra30-devfreq.c (Thorsten Blum) - Fix potential use-after-free issue of OPP handling in hisi_uncore_freq.c (Pengjie Zhang) - Fix typo in DFSO_DOWNDIFFERENTIAL macro name in governor_simpleondemand.c in devfreq (Riwen Lu)" * tag 'pm-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (96 commits) PM / devfreq: Fix typo in DFSO_DOWNDIFFERENTIAL macro name cpuidle: Warn instead of bailing out if target residency check fails cpuidle: Update header inclusion Documentation: power/cpuidle: Document the CPU system wakeup latency QoS cpuidle: Respect the CPU system wakeup QoS limit for cpuidle sched: idle: Respect the CPU system wakeup QoS limit for s2idle pmdomain: Respect the CPU system wakeup QoS limit for cpuidle pmdomain: Respect the CPU system wakeup QoS limit for s2idle PM: QoS: Introduce a CPU system wakeup QoS limit cpuidle: governors: teo: Add missing space to the description PM: hibernate: Extra cleanup of comments in swap handling code PM / devfreq: tegra30: use min to simplify actmon_cpu_to_emc_rate PM / devfreq: hisi: Fix potential UAF in OPP handling PM / devfreq: Move governor.h to a public header location powercap: intel_rapl: Enable MSR-based RAPL PMU support powercap: intel_rapl: Prepare read_raw() interface for atomic-context callers cpufreq: qcom-nvmem: fix compilation warning for qcom_cpufreq_ipq806x_match_list PM: sleep: Call pm_sleep_fs_sync() instead of ksys_sync_helper() PM: sleep: Add support for wakeup during filesystem sync cpufreq: ACPI: Replace udelay() with usleep_range() ...	2025-12-02 17:31:22 -08:00
Linus Torvalds	d42e504a55	Update to the time/timers core: ... - Prevent a thundering herd problem when the timekeeper CPU is delayed and a large number of CPUs compete to acquire jiffies_lock to do the update. Limit it to one CPU with a separate "uncontended" atomic variable. - A set of improvements for the timer migration mechanism: - Support imbalanced NUMA trees correctly - Support dynamic exclusion of CPUs from the migrator duty to allow the cpuset/isolation mechanism to exclude them from handling timers of remote idle CPUs. - The usual small updates, cleanups and enhancements -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmks7doTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoaxrD/40nxx+8cEXsVbVLIkP2PQbd2Y8+7sk YbNu/Cb7j7Bg7R8YIs4p5GHk+7Yt/hNsW77SmbAzRPUyYYG6L3bUYlBa3yQlvIuo xRPbzGA+RJies9skIGHbQ8z6ig1zUASRJPcBYiuaVIAuQhCfLNc4Nii9cEWtjZ24 +5gfRwV+vy74ArWwRkwaGejDK1tav+gd62OkFQZC8WtjQ08ozGZ6VBJNg7nYq/gH FYO1rH2tQ/ZyjlO/x5NF8gFcjYD8iv5PDp8oH35MPx+XTdDccf0G3QB7ug0ffVdV b4gA6lZTAmpsu/NHb6ByN4i/kf3wf8la/i+EaAh/Ov7NW078gunvVKVA7jStcbBl ZgG5SRHiKRvQF/WXLGVQAnilRDZwRuS0nmJlqfExa44v23l5o3768RwdRYwQlv8g X5KSRl0jlVgVtZHgNBlZtgX9+rnQSr9sB5sVGBP2a6a1WhVXQV/2kp0wjdnU0mPw jLCnSdsHqBlSf9V7O/na823WCnBFb7blrLBXUoSbHBnICqtVFzhE1kBXWw3S7Kqh CiaWM+S4WfR0HRnUlWMTS8BZ82MgiDnd7nGUXWwXBbdqWmoj/9CoU6SZRjbMBkzi EY1XvmoYf6eSzdxfydI1hFi0/bbb8K9umHQlrpW3HeN9uXnVc0/+TroVPLuaKUdi 53ClqXjzE+CpJg== =lQKn -----END PGP SIGNATURE----- Merge tag 'timers-core-2025-11-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer core updates from Thomas Gleixner: - Prevent a thundering herd problem when the timekeeper CPU is delayed and a large number of CPUs compete to acquire jiffies_lock to do the update. Limit it to one CPU with a separate "uncontended" atomic variable. - A set of improvements for the timer migration mechanism: - Support imbalanced NUMA trees correctly - Support dynamic exclusion of CPUs from the migrator duty to allow the cpuset/isolation mechanism to exclude them from handling timers of remote idle CPUs - The usual small updates, cleanups and enhancements * tag 'timers-core-2025-11-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: timers/migration: Exclude isolated cpus from hierarchy cpumask: Add initialiser to use cleanup helpers sched/isolation: Force housekeeping if isolcpus and nohz_full don't leave any cgroup/cpuset: Rename update_unbound_workqueue_cpumask() to update_isolation_cpumasks() timers/migration: Use scoped_guard on available flag set/clear timers/migration: Add mask for CPUs available in the hierarchy timers/migration: Rename 'online' bit to 'available' selftests/timers/nanosleep: Add tests for return of remaining time selftests/timers: Clean up kernel version check in posix_timers time: Fix a few typos in time[r] related code comments time: tick-oneshot: Add missing Return and parameter descriptions to kernel-doc hrtimer: Store time as ktime_t in restart block timers/migration: Remove dead code handling idle CPU checking for remote timers timers/migration: Remove unused "cpu" parameter from tmigr_get_group() timers/migration: Assert that hotplug preparing CPU is part of stable active hierarchy timers/migration: Fix imbalanced NUMA trees timers/migration: Remove locking on group connection timers/migration: Convert "while" loops to use "for" tick/sched: Limit non-timekeeper CPUs calling jiffies update	2025-12-02 09:58:33 -08:00
Linus Torvalds	2b09f480f0	A large overhaul of the restartable sequences and CID management: ... The recent enablement of RSEQ in glibc resulted in regressions which are caused by the related overhead. It turned out that the decision to invoke the exit to user work was not really a decision. More or less each context switch caused that. There is a long list of small issues which sums up nicely and results in a 3-4% regression in I/O benchmarks. The other detail which caused issues due to extra work in context switch and task migration is the CID (memory context ID) management. It also requires to use a task work to consolidate the CID space, which is executed in the context of an arbitrary task and results in sporadic uncontrolled exit latencies. The rewrite addresses this by: - Removing deprecated and long unsupported functionality - Moving the related data into dedicated data structures which are optimized for fast path processing. - Caching values so actual decisions can be made - Replacing the current implementation with a optimized inlined variant. - Separating fast and slow path for architectures which use the generic entry code, so that only fault and error handling goes into the TIF_NOTIFY_RESUME handler. - Rewriting the CID management so that it becomes mostly invisible in the context switch path. That moves the work of switching modes into the fork/exit path, which is a reasonable tradeoff. That work is only required when a process creates more threads than the cpuset it is allowed to run on or when enough threads exit after that. An artificial thread pool benchmarks which triggers this did not degrade, it actually improved significantly. The main effect in migration heavy scenarios is that runqueue lock held time and therefore contention goes down significantly. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmksaRYTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoencEADA5he8PAFPmSRRPo6+2G5mHzWe8kIU 5ZViQStWFNAA0qqy8VXryWiJ6qqrO6la9o7K4YOXASUtlkVjquRp1DF7PabqGwuy zshbRCXNlT51J8uqanN8VrGVjlf+bMdHDbGoI1SLkUTxG8b+kDD5PXUQE1ARelPP Slbg9u+EMrxj6D5MDTPbuW6TqryJEkPtiNScyOz43emp9ww9+WVxenOcRqU4D+Th mjWmrGIzkroSf4XReMoD/wg9TPTpUjXnNCwl2viY9JvBpkMfYtU4tJAGK3aNFOWy zsAN0O9CaFGrUEFne7qUmtwhNLdtnjx5HN5pe7yZd1EhdTuQKq4jPiiQnwwm8w72 c0o6m45FNPmPoSyfaZWCkLjbTEUXonT9JF61iN35JVxim8gBDDJjHFKnLxDmLrH3 X0eESE48ReY2EneDV6Y8RJRo6oG14Fccvc39aTf/2Rw3trpmtt2agvConQzupQIg DzANw4jhUUzFRrHrMHACNsqKFXh9ratue/S9DM3xxTpGO/bKdeK7jGIgzNf8O34M J0O6Hvk5jMdcWlIJTx21GoGzoSkkXnR49g/71aCcp+MwdY4x9zFz5SWi8LWQRmkx xRo6tY27Bma8/SEwMJjPpAUXDTpq6v+j3cPisybL1yGsyt9lh+p8LX7VUtwcoEqe 6ZelC5Kgw/+/kg== =n5KT -----END PGP SIGNATURE----- Merge tag 'core-rseq-2025-11-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull rseq updates from Thomas Gleixner: "A large overhaul of the restartable sequences and CID management: The recent enablement of RSEQ in glibc resulted in regressions which are caused by the related overhead. It turned out that the decision to invoke the exit to user work was not really a decision. More or less each context switch caused that. There is a long list of small issues which sums up nicely and results in a 3-4% regression in I/O benchmarks. The other detail which caused issues due to extra work in context switch and task migration is the CID (memory context ID) management. It also requires to use a task work to consolidate the CID space, which is executed in the context of an arbitrary task and results in sporadic uncontrolled exit latencies. The rewrite addresses this by: - Removing deprecated and long unsupported functionality - Moving the related data into dedicated data structures which are optimized for fast path processing. - Caching values so actual decisions can be made - Replacing the current implementation with a optimized inlined variant. - Separating fast and slow path for architectures which use the generic entry code, so that only fault and error handling goes into the TIF_NOTIFY_RESUME handler. - Rewriting the CID management so that it becomes mostly invisible in the context switch path. That moves the work of switching modes into the fork/exit path, which is a reasonable tradeoff. That work is only required when a process creates more threads than the cpuset it is allowed to run on or when enough threads exit after that. An artificial thread pool benchmarks which triggers this did not degrade, it actually improved significantly. The main effect in migration heavy scenarios is that runqueue lock held time and therefore contention goes down significantly" * tag 'core-rseq-2025-11-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits) sched/mmcid: Switch over to the new mechanism sched/mmcid: Implement deferred mode change irqwork: Move data struct to a types header sched/mmcid: Provide CID ownership mode fixup functions sched/mmcid: Provide new scheduler CID mechanism sched/mmcid: Introduce per task/CPU ownership infrastructure sched/mmcid: Serialize sched_mm_cid_fork()/exit() with a mutex sched/mmcid: Provide precomputed maximal value sched/mmcid: Move initialization out of line signal: Move MMCID exit out of sighand lock sched/mmcid: Convert mm CID mask to a bitmap cpumask: Cache num_possible_cpus() sched/mmcid: Use cpumask_weighted_or() cpumask: Introduce cpumask_weighted_or() sched/mmcid: Prevent pointless work in mm_update_cpus_allowed() sched/mmcid: Move scheduler code out of global header sched: Fixup whitespace damage sched/mmcid: Cacheline align MM CID storage sched/mmcid: Use proper data structures sched/mmcid: Revert the complex CID management ...	2025-12-02 08:48:53 -08:00
Linus Torvalds	9368f0f941	vfs-6.19-rc1.inode ... -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCaSmOZAAKCRCRxhvAZXjc omMSAP9GLhavxyWQ24Q+49CNWWRQWDY1wTOiUK2BwtIvZ0YEcAD8D1dAiMckL5pC RwEAVA5p+y+qi+bZP0KXCBxQddoTIQM= =zo/J -----END PGP SIGNATURE----- Merge tag 'vfs-6.19-rc1.inode' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Pull vfs inode updates from Christian Brauner: "Features: - Hide inode->i_state behind accessors. Open-coded accesses prevent asserting they are done correctly. One obvious aspect is locking, but significantly more can be checked. For example it can be detected when the code is clearing flags which are already missing, or is setting flags when it is illegal (e.g., I_FREEING when ->i_count > 0) - Provide accessors for ->i_state, converts all filesystems using coccinelle and manual conversions (btrfs, ceph, smb, f2fs, gfs2, overlayfs, nilfs2, xfs), and makes plain ->i_state access fail to compile - Rework I_NEW handling to operate without fences, simplifying the code after the accessor infrastructure is in place Cleanups: - Move wait_on_inode() from writeback.h to fs.h - Spell out fenced ->i_state accesses with explicit smp_wmb/smp_rmb for clarity - Cosmetic fixes to LRU handling - Push list presence check into inode_io_list_del() - Touch up predicts in __d_lookup_rcu() - ocfs2: retire ocfs2_drop_inode() and I_WILL_FREE usage - Assert on ->i_count in iput_final() - Assert ->i_lock held in __iget() Fixes: - Add missing fences to I_NEW handling" * tag 'vfs-6.19-rc1.inode' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (22 commits) dcache: touch up predicts in __d_lookup_rcu() fs: push list presence check into inode_io_list_del() fs: cosmetic fixes to lru handling fs: rework I_NEW handling to operate without fences fs: make plain ->i_state access fail to compile xfs: use the new ->i_state accessors nilfs2: use the new ->i_state accessors overlayfs: use the new ->i_state accessors gfs2: use the new ->i_state accessors f2fs: use the new ->i_state accessors smb: use the new ->i_state accessors ceph: use the new ->i_state accessors btrfs: use the new ->i_state accessors Manual conversion to use ->i_state accessors of all places not covered by coccinelle Coccinelle-based conversion to use ->i_state accessors fs: provide accessors for ->i_state fs: spell out fenced ->i_state accesses with explicit smp_wmb/smp_rmb fs: move wait_on_inode() from writeback.h to fs.h fs: add missing fences to I_NEW handling ocfs2: retire ocfs2_drop_inode() and I_WILL_FREE usage ...	2025-12-01 09:02:34 -08:00
Yang Erkun	dac092195b	ext4: rename EXT4_GET_BLOCKS_PRE_IO ... This flag has been generalized to split an unwritten extent when we do dio or dioread_nolock writeback, or to avoid merge new extents which was created by extents split. Update some related comments too. Reviewed-by: Zhang Yi <yi.zhang@huawei.com> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Baokun Li <libaokun1@huawei.com> Signed-off-by: Yang Erkun <yangerkun@huawei.com> Message-ID: <20251112084538.1658232-2-yangerkun@huawei.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>	2025-11-26 17:13:33 -05:00
Xie Yuanbin	31807483d3	mm/memory-failure: remove the selection of RAS ... commit 97f0b13452 ("tracing: add trace event for memory-failure") introduces the selection of RAS in memory-failure. This commit is just a tracing feature; in reality, there is no dependency between memory-failure and RAS. RAS increases the size of the bzImage image by 8k, which is very valuable for embedded devices. Move the memory-failure traceing code from ras_event.h to memory-failure.h and remove the selection of RAS. Link: https://lkml.kernel.org/r/20251119095943.67125-1-xieyuanbin1@huawei.com Signed-off-by: Xie Yuanbin <xieyuanbin1@huawei.com> Acked-by: David Hildenbrand (Red Hat) <david@kernel.org> Acked-by: Miaohe Lin <linmiaohe@huawei.com> Cc: Borislav Petkov <bp@alien8.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2025-11-24 15:08:55 -08:00
Wei Yang	9e01407708	mm/khugepaged: unify SCAN_PMD_NONE and SCAN_PMD_NULL into SCAN_NO_PTE_TABLE ... The current hugepage collapse scan results include two separate values, SCAN_PMD_NONE and SCAN_PMD_NULL, which are handled identically by the consuming code. To reduce confusion and improve long-term maintenance, this commit merges these two functionally equivalent states into a single, clearer identifier: SCAN_NO_PTE_TABLE Link: https://lkml.kernel.org/r/20251114030028.7035-4-richard.weiyang@gmail.com Suggested-by: "David Hildenbrand (Red Hat)" <david@kernel.org> Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Dev Jain <dev.jain@arm.com> Acked-by: David Hildenbrand (Red Hat) <david@kernel.org> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Nico Pache <npache@redhat.com> Cc: Barry Song <baohua@kernel.org> Cc: Lance Yang <lance.yang@linux.dev> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2025-11-24 15:08:52 -08:00
Lorenzo Stoakes	5dba5cc2e0	mm: introduce VM_MAYBE_GUARD and make visible in /proc/$pid/smaps ... Patch series "introduce VM_MAYBE_GUARD and make it sticky", v4. Currently, guard regions are not visible to users except through /proc/$pid/pagemap, with no explicit visibility at the VMA level. This makes the feature less useful, as it isn't entirely apparent which VMAs may have these entries present, especially when performing actions which walk through memory regions such as those performed by CRIU. This series addresses this issue by introducing the VM_MAYBE_GUARD flag which fulfils this role, updating the smaps logic to display an entry for these. The semantics of this flag are that a guard region MAY be present if set (we cannot be sure, as we can't efficiently track whether an MADV_GUARD_REMOVE finally removes all the guard regions in a VMA) - but if not set the VMA definitely does NOT have any guard regions present. It's problematic to establish this flag without further action, because that means that VMAs with guard regions in them become non-mergeable with adjacent VMAs for no especially good reason. To work around this, this series also introduces the concept of 'sticky' VMA flags - that is flags which: a. if set in one VMA and not in another still permit those VMAs to be merged (if otherwise compatible). b. When they are merged, the resultant VMA must have the flag set. The VMA logic is updated to propagate these flags correctly. Additionally, VM_MAYBE_GUARD being an explicit VMA flag allows us to solve an issue with file-backed guard regions - previously these established an anon_vma object for file-backed mappings solely to have vma_needs_copy() correctly propagate guard region mappings to child processes. We introduce a new flag alias VM_COPY_ON_FORK (which currently only specifies VM_MAYBE_GUARD) and update vma_needs_copy() to check explicitly for this flag and to copy page tables if it is present, which resolves this issue. Additionally, we add the ability for allow-listed VMA flags to be atomically writable with only mmap/VMA read locks held. The only flag we allow so far is VM_MAYBE_GUARD, which we carefully ensure does not cause any races by being allowed to do so. This allows us to maintain guard region installation as a read-locked operation and not endure the overhead of obtaining a write lock here. Finally we introduce extensive VMA userland tests to assert that the sticky VMA logic behaves correctly as well as guard region self tests to assert that smaps visibility is correctly implemented. This patch (of 9): Currently, if a user needs to determine if guard regions are present in a range, they have to scan all VMAs (or have knowledge of which ones might have guard regions). Since commit 8e2f2aeb8b ("fs/proc/task_mmu: add guard region bit to pagemap") and the related commit a516403787 ("fs/proc: extend the PAGEMAP_SCAN ioctl to report guard regions"), users can use either /proc/$pid/pagemap or the PAGEMAP_SCAN functionality to perform this operation at a virtual address level. This is not ideal, and it gives no visibility at a /proc/$pid/smaps level that guard regions exist in ranges. This patch remedies the situation by establishing a new VMA flag, VM_MAYBE_GUARD, to indicate that a VMA may contain guard regions (it is uncertain because we cannot reasonably determine whether a MADV_GUARD_REMOVE call has removed all of the guard regions in a VMA, and additionally VMAs may change across merge/split). We utilise 0x800 for this flag which makes it available to 32-bit architectures also, a flag that was previously used by VM_DENYWRITE, which was removed in commit 8d0920bde5 ("mm: remove VM_DENYWRITE") and hasn't bee reused yet. We also update the smaps logic and documentation to identify these VMAs. Another major use of this functionality is that we can use it to identify that we ought to copy page tables on fork. We do not actually implement usage of this flag in mm/madvise.c yet as we need to allow some VMA flags to be applied atomically under mmap/VMA read lock in order to avoid the need to acquire a write lock for this purpose. Link: https://lkml.kernel.org/r/cover.1763460113.git.lorenzo.stoakes@oracle.com Link: https://lkml.kernel.org/r/cf8ef821eba29b6c5b5e138fffe95d6dcabdedb9.1763460113.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Pedro Falcato <pfalcato@suse.de> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: David Hildenbrand (Red Hat) <david@kernel.org> Reviewed-by: Lance Yang <lance.yang@linux.dev> Cc: Andrei Vagin <avagin@gmail.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Jann Horn <jannh@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Nico Pache <npache@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>	2025-11-20 13:43:58 -08:00
Gabriele Monaco	8312cab5ff	timers/migration: Rename 'online' bit to 'available' ... The timer migration hierarchy excludes offline CPUs via the tmigr_is_not_available function, which is essentially checking the online bit for the CPU. Rename the online bit to available and all references in function names and tracepoint to generalise the concept of available CPUs. Signed-off-by: Gabriele Monaco <gmonaco@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Link: https://patch.msgid.link/20251120145653.296659-2-gmonaco@redhat.com	2025-11-20 20:17:31 +01:00
Rafael J. Wysocki	37d6d92fe0	Merge back earlier material related to system sleep for 6.19	2025-11-17 16:55:55 +01:00
Kuninori Morimoto	8855eb7d29	ASoC: asoc.h: convert to snd_soc_dapm_xxx() ... This patch converts below functions. dapm->dev -> snd_soc_dapm_to_dev() dapm->card -> snd_soc_dapm_to_card() dapm->component -> snd_soc_dapm_to_component() dapm_kcontrol_get_value() -> snd_soc_dapm_kcontrol_get_value() snd_soc_component_enable_pin() -> snd_soc_dapm_enable_pin() snd_soc_component_enable_pin_unlocked() -> snd_soc_dapm_enable_pin_unlocked() snd_soc_component_disable_pin() -> snd_soc_dapm_disable_pin() snd_soc_component_disable_pin_unlocked() -> snd_soc_dapm_disable_pin_unlocked() snd_soc_component_nc_pin() -> snd_soc_dapm_nc_pin() snd_soc_component_nc_pin_unlocked() -> snd_soc_dapm_nc_pin_unlocked() snd_soc_component_get_pin_status() -> snd_soc_dapm_get_pin_status() snd_soc_component_force_enable_pin() -> snd_soc_dapm_force_enable_pin() snd_soc_component_force_enable_pin_unlocked() -> snd_soc_dapm_force_enable_pin_unlocked() snd_soc_component_force_bias_level() -> snd_soc_dapm_force_bias_level() snd_soc_component_get_bias_level() -> snd_soc_dapm_get_bias_level() snd_soc_component_init_bias_level() -> snd_soc_dapm_init_bias_level() snd_soc_component_get_dapm() -> snd_soc_component_to_dapm() snd_soc_dapm_kcontrol_component() -> snd_soc_dapm_kcontrol_to_component() snd_soc_dapm_kcontrol_widget() -> snd_soc_dapm_kcontrol_to_widget() snd_soc_dapm_kcontrol_dapm() -> snd_soc_dapm_kcontrol_to_dapm() snd_soc_dapm_np_pin() -> snd_soc_dapm_disable_pin() Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://patch.msgid.link/87346la0cv.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown <broonie@kernel.org>	2025-11-17 00:14:25 +00:00
Mario Limonciello (AMD)	0ca04993da	PM: Introduce new PMSG_POWEROFF event ... PMSG_POWEROFF will be used for the PM core to allow differentiating between a hibernation or shutdown sequence when re-using callbacks for common code. Hibernation is started by writing a hibernation method (such as 'platform' 'shutdown', or 'reboot') to use into /sys/power/disk and writing 'disk' to /sys/power/state. Shutdown is initiated with the reboot() syscall with arguments on whether to halt the system or power it off. Tested-by: Eric Naim <dnaim@cachyos.org> Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org> Link: https://patch.msgid.link/20251112224025.2051702-2-superm1@kernel.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>	2025-11-14 17:05:53 +01:00
Tejun Heo	95d1df610c	sched_ext: Implement load balancer for bypass mode ... In bypass mode, tasks are queued on per-CPU bypass DSQs. While this works well in most cases, there is a failure mode where a BPF scheduler can skew task placement severely before triggering bypass in highly over-saturated systems. If most tasks end up concentrated on a few CPUs, those CPUs can accumulate queues that are too long to drain in a reasonable time, leading to RCU stalls and hung tasks. Implement a simple timer-based load balancer that redistributes tasks across CPUs within each NUMA node. The balancer runs periodically (default 500ms, tunable via bypass_lb_intv_us module parameter) and moves tasks from overloaded CPUs to underloaded ones. When moving tasks between bypass DSQs, the load balancer holds nested DSQ locks to avoid dropping and reacquiring the donor DSQ lock on each iteration, as donor DSQs can be very long and highly contended. Add the SCX_ENQ_NESTED flag and use raw_spin_lock_nested() in dispatch_enqueue() to support this. The load balancer timer function reads scx_bypass_depth locklessly to check whether bypass mode is active. Use WRITE_ONCE() when updating scx_bypass_depth to pair with the READ_ONCE() in the timer function. This has been tested on a 192 CPU dual socket AMD EPYC machine with ~20k runnable tasks running scx_cpu0. As scx_cpu0 queues all tasks to CPU0, almost all tasks end up on CPU0 creating severe imbalance. Without the load balancer, disabling the scheduler can lead to RCU stalls and hung tasks, taking a very long time to complete. With the load balancer, disable completes in about a second. The load balancing operation can be monitored using the sched_ext_bypass_lb tracepoint and disabled by setting bypass_lb_intv_us to 0. v2: Lock both rq and DSQ in bypass_lb_cpu() and use dispatch_dequeue_locked() to prevent races with dispatch_dequeue() (Andrea Righi). Cc: Andrea Righi <arighi@nvidia.com> Cc: Dan Schatzberg <schatzberg.dan@gmail.com> Cc: Emil Tsalapatis <etsal@meta.com> Reviewed_by: Emil Tsalapatis <emil@etsalapatis.com> Signed-off-by: Tejun Heo <tj@kernel.org>	2025-11-12 06:43:44 -10:00
Zhang Yi	9dbf945320	ext4: add two trace points for moving extents ... To facilitate tracking the length, type, and outcome of the move extent, add a trace point at both the entry and exit of mext_move_extent(). Signed-off-by: Zhang Yi <yi.zhang@huawei.com> Reviewed-by: Jan Kara <jack@suse.cz> Message-ID: <20251013015128.499308-13-yi.zhang@huaweicloud.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>	2025-11-06 10:44:39 -05:00