mirror of
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v7.4-rc1
7032 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
2a500a04d6 |
Driver core fixes for 7.4-rc1
- Revert TAINT_FORCED_BIND, introduced to flag manual sysfs bind/unbind operations associated with misleading fuzzing reports. It also taints established workflows, including VFIO device passthrough; a more targeted approach will be revisited after 7.4. - Rate limit synthetic uevent failure messages to prevent log flooding from repeated invalid writes to sysfs uevent files -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQS2q/xV6QjXAdC7k+1FlHeO1qrKLgUCauOoegAKCRBFlHeO1qrK Li9DAP40jVb0AyHVlniDMGwdCajihY4NweTKKMAdiJJ5f+FX/AEAtm5ZK7rflqQn z5b4dHsFFGPEWfaKZ+w1Qx7L39njJQo= =UZoc -----END PGP SIGNATURE----- Merge tag 'driver-core-7.4-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core Pull more driver core fixes from Danilo Krummrich: - Revert TAINT_FORCED_BIND, introduced to flag manual sysfs bind/unbind operations associated with misleading fuzzing reports. It also taints established workflows, including VFIO device passthrough; a more targeted approach will be revisited after 7.4. - Rate limit synthetic uevent failure messages to prevent log flooding from repeated invalid writes to sysfs uevent files * tag 'driver-core-7.4-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: Revert "driver core: add TAINT_FORCED_BIND for when userspace manually messes with devices and drivers" driver core: Limit the messages on a refused uevent |
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Linus Torvalds
|
a4395d81ec |
regmap: Fix for v7.4
One fix for a real issue that fortunately doesn't affect any in tree configurations. -----BEGIN PGP SIGNATURE----- iHQEABYKAB0WIQReagvpf3TrrA7BoYYv73Ows9A4iQUCauTIrQAKCRAv73Ows9A4 iRrKAPdioxxMXzhqymnjt+qqFxZU+WEM1dI7wwN5ErfdgvJ/AQC90hBD/MfPflW1 L8vwD8jogi6VKRw8vYGEVQe/IAugAw== =yYQu -----END PGP SIGNATURE----- Merge tag 'regmap-fix-v7.4-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap Pull regmap fix from Mark Brown: "One fix for a real issue that fortunately doesn't affect any in tree configurations" * tag 'regmap-fix-v7.4-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regmap: irq: fix incorrect index calculation for read_sub_irq_data() |
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Greg Kroah-Hartman
|
a287f97d42 |
Revert "driver core: add TAINT_FORCED_BIND for when userspace manually messes with devices and drivers"
This reverts commit
|
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Josef Bacik
|
a01c8e5b1d |
driver core: Limit the messages on a refused uevent
A write to a "uevent" file which is no valid action makes
kobject_synth_uevent() print a warning and uevent_store() an error every
time. This is generally considered a bad thing so rate limit these
messages.
Fixes:
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|
Linus Torvalds
|
8a36f53fd5 |
mm.git review status for linus..mm-stable
Everything:
Total patches: 213
Fixes: tags: 69
cc:stable patches: 43
Reviews/patch: 2.04
Reviewed rate: 86%
Excluding DAMON:
Total patches: 192
Fixes: tags: 63
cc:stable patches: 39
Reviews/patch: 2.18
Reviewed rate: 89%
Excluding DAMON and selftests:
Total patches: 182
Fixes: tags: 57
cc:stable patches: 39
Reviews/patch: 2.23
Reviewed rate: 89%
Summary of series in this merge:
- "mm: make VMA flag semantics explicit, eliminate VM_SPECIAL"
(Lorenzo Stoakes (ARM)):
Replace VM_SPECIAL with helpers describing mapping ownership and
behavior. Enforce the mmap flag rules and convert affected drivers,
removing ambiguous tests shared by driver mappings and ordinary memory.
- "support kselftest on nommu platform" (Hajime Tazaki):
Add opt-in mmap and mremap tests for NOMMU systems. Teach the runner to
avoid its fork-dependent timeout command and document the build and
runtime requirements.
- "mm/collapse: separate a collapse from its callers"
(Kiryl Shutsemau (Meta)):
Separate huge-page collapse from caller policy. Replace khugepaged
identity checks with explicit permissions, and separate scanning from
collapse with the mmap_lock drop in one place.
- "mm: implement and use vma_has_anon_rmap(), silence KCSAN"
(Lorenzo Stoakes (ARM)):
Provide a common helper for testing whether a VMA has anonymous reverse
mappings. Document the locking rules, annotate intentional concurrent
reads for KCSAN, and convert the core MM callers.
- "mm/sparse: remove SECTION_MARKED_PRESENT and further cleanups"
(David Hildenbrand (Arm)):
Remove SECTION_MARKED_PRESENT in favor of the early-section flag.
Simplify sparse memory initialization, section metadata handling and
related PFN validity checks.
- "sh: remove NUMA and SPARSEMEM support" (Mike Rapoport (Microsoft)):
Remove SuperH NUMA and SPARSEMEM support. The extra memory banks have
been unusable since the NO_BOOTMEM conversion, leaving only the code and
data overhead.
- "mm: Unify device DAX and HugeTLB vmemmap population paths"
(Muchun Song):
Unify the generic device DAX and HugeTLB vmemmap population paths and
shared tail-page handling. Remove the duplicate DAX machinery while
retaining the powerpc radix implementation.
- "kselftest: mm: fix some failure of split_huge_page_test" (Yeoreum Yun):
Fix huge-page split tests racing with khugepaged recollapse. Use pagemap
and page flags instead of VMA-boundary assumptions which fail when glibc
has already enabled THP.
- "memcg: move memcgid refcount to objcg to unpin dying memcgs"
(Bingfang Guo):
Let dying memcgs be freed while swapped-out shmem still holds their IDs.
Move ID references to reparentable objcgs, with the necessary swap
accounting and RCU lifetime changes.
- "mm/truncate: fix data loss when truncating straddling large folios"
(Zhang Yi):
Preserve out-of-range data when truncating straddling large folios. Fix
a lookup race and split-failure handling, and handle minimum folio orders
for the forthcoming ext4 iomap buffered I/O path.
- "mm/damon: introduce damos quota goal target metric complement flag"
(SJ Park):
Let DAMOS quota goals use a metric's complement, so utilization can also
express free-memory goals without adding separate metrics. Add the sysfs
interface, documentation and tests.
- "arm64/mm: Standardize printing for pgtable entries" (Anshuman Khandual):
Use the generic formatter for arm64 page-table entries, ready for future
wider entries. Move the safe-PTE-update check out of the header to avoid
an include cycle.
- "mm: kmsan: fix iounmap metadata teardown" (Dima Koziuk):
Fix KMSAN metadata leaks on iounmap and failed ioremap allocations. Free
backing pages before removing their mappings, and share the teardown with
partial-allocation cleanup.
- "mm/damon/core: preserve quota state when constructing schemes"
(Karl Mehltretter):
Preserve running DAMOS quota state while validating parameter updates.
Even rejected updates could reset accounting and exceed the quota window;
add tests for both accepted and rejected updates.
- "mm/vmalloc: fix vmalloc_dump_obj VA lookup" (Ye Liu):
Fix vmalloc_dump_obj() lookups for last-page addresses and allocations
spanning vmap zones. These allocations were being missed in diagnostic
output.
- "mm: various (urgent?) fixes" (David Hildenbrand (Arm)):
Fix mmap charge leaks and hugetlb use-after-free, wrong-address
unmapping, stuck locks and endless faults. Also preserve reservations on
failed mremap and handle stale userfaultfd bits.
- "maple_tree: fix maple_range_64 crashes in RCU mode" (Dimitris Charisis):
Fix pointer and metadata confusion during RCU destruction of
maple_range_64 nodes, avoiding double frees and invalid accesses. Add a
regression test; no in-tree user currently uses this combination.
- "mm: fix hugetlb NR_HUGETLB accounting on folio migration" (Hongfu Li):
Fix hugetlb migration and preallocation accounting so /proc/vmstat
retains the correct count and memory.numa_stat follows the folio to its
new node.
- "mm/damon: fix a minor bug, clean code, and add a test" (SJ Park):
Fix 32-bit DAMON age overflow which made old regions look young. Share
hugetlb folio acquisition code and add a regression test for the
previously fixed last-region skipping bug.
- "mm/damon/core: cleanup code, reduce stack usage, and add kunit"
(SJ Park):
Reduce kdamond stack usage and remove unused enums. Add deterministic
PSI quota-goal tests which do not depend on the machine's current memory
pressure.
- "mm/damon: fix the temporal goal tuner's size quota conversion"
(Donggeun Yoo):
Bound the temporal tuner's quota conversion to prevent overflow and zero
effective quotas, which could stop schemes making progress. Add boundary
tests.
- "Don't use GFP_DMA when calling dma_alloc_coherent" (Baoquan He):
Remove redundant GFP_DMA flags from coherent DMA allocation calls. The
DMA API already selects the zone from device limits and ignores the
caller's flag.
- "kselftest: mm: fix intermittent failure khugepaged test" (Yeoreum Yun):
Propagate child-process failures in the khugepaged tests and prevent
background collapse from racing their checks. This removes false passes
and intermittent failures.
- "MAINTAINERS: cover all hugetlb headers under HUGETLB SUBSYSTEM"
(Enze Li):
Cover all hugetlb headers in MAINTAINERS so get_maintainer.pl finds the
right maintainers. Also label the closing hugetlb_cgroup.h include
guard.
Summary of the 65 singletons in this merge:
The singletons include a few worthwhile performance fixes. Avoiding
unnecessary reverse-map tree updates gave a reported 15.9% improvement
in UnixBench's execl test on a 192-core x86 system. A reclaim retry fix
stops defrag_mode from spinning under memory.low protection; a reported
file-creation stress test ran 5.7 times faster, with far less memory
pressure. Narrower hugetlb invalidations also spare KVM guests needless
refaults: the reported Redis-in-VM P99 QPS penalty while punching holes
fell from 7.09% to 1.45%.
Several fixes prevent lost data or corrupted memory. Lazyfree huge-page
races with mremap()/munmap() could lose data or access freed memory, and
MADV_COLD could lose a concurrent write's dirty bit. Another fix
prevents stale migration entries from outliving large folios. On
filesystems with blocks smaller than a page, extending a file by 4 GiB
or more could expose bytes written past the old EOF through mmap instead
of zeroes. That is fixed, along with use-after-free races in
PAGEMAP_SCAN during process exit and in memory-cgroup accounting on
PREEMPT_RT kernels.
Other fixes stop UFFDIO_MOVE spinning forever on pinned large folios,
which could wedge other memory operations, and stop mremap() leaking
commit charges until allocations fail under strict overcommit. A further
fix keeps userfaultfd tracking intact on neighboring mappings. NUMA
binding no longer prevents long-term pins when the chosen node has only
movable memory, fixing QEMU/VFIO startup and io_uring buffer
registration failures. MGLRU also gets a fix for early-boot crashes with
memory cgroups disabled at boot, notably in small crash kernels.
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Merge tag 'mm-stable-2026-10-25-19-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull more MM updates from Andrew Morton:
- "mm: make VMA flag semantics explicit, eliminate VM_SPECIAL" (Lorenzo
Stoakes):
Replace VM_SPECIAL with helpers describing mapping ownership and
behavior. Enforce the mmap flag rules and convert affected drivers,
removing ambiguous tests shared by driver mappings and ordinary
memory.
- "support kselftest on nommu platform" (Hajime Tazaki):
Add opt-in mmap and mremap tests for NOMMU systems. Teach the runner
to avoid its fork-dependent timeout command and document the build
and runtime requirements.
- "mm/collapse: separate a collapse from its callers" (Kiryl
Shutsemau):
Separate huge-page collapse from caller policy. Replace khugepaged
identity checks with explicit permissions, and separate scanning from
collapse with the mmap_lock drop in one place.
- "mm: implement and use vma_has_anon_rmap(), silence KCSAN" (Lorenzo
Stoakes):
Provide a common helper for testing whether a VMA has anonymous
reverse mappings. Document the locking rules, annotate intentional
concurrent reads for KCSAN, and convert the core MM callers.
- "mm/sparse: remove SECTION_MARKED_PRESENT and further cleanups"
(David Hildenbrand):
Remove SECTION_MARKED_PRESENT in favor of the early-section flag.
Simplify sparse memory initialization, section metadata handling and
related PFN validity checks.
- "sh: remove NUMA and SPARSEMEM support" (Mike Rapoport):
Remove SuperH NUMA and SPARSEMEM support. The extra memory banks have
been unusable since the NO_BOOTMEM conversion, leaving only the code
and data overhead.
- "mm: Unify device DAX and HugeTLB vmemmap population paths" (Muchun
Song):
Unify the generic device DAX and HugeTLB vmemmap population paths and
shared tail-page handling. Remove the duplicate DAX machinery while
retaining the powerpc radix implementation.
- "kselftest: mm: fix some failure of split_huge_page_test" (Yeoreum
Yun):
Fix huge-page split tests racing with khugepaged recollapse. Use
pagemap and page flags instead of VMA-boundary assumptions which fail
when glibc has already enabled THP.
- "memcg: move memcgid refcount to objcg to unpin dying memcgs"
(Bingfang Guo):
Let dying memcgs be freed while swapped-out shmem still holds their
IDs. Move ID references to reparentable objcgs, with the necessary
swap accounting and RCU lifetime changes.
- "mm/truncate: fix data loss when truncating straddling large folios"
(Zhang Yi):
Preserve out-of-range data when truncating straddling large folios.
Fix a lookup race and split-failure handling, and handle minimum
folio orders for the forthcoming ext4 iomap buffered I/O path.
- "mm/damon: introduce damos quota goal target metric complement flag"
(SJ Park):
Let DAMOS quota goals use a metric's complement, so utilization can
also express free-memory goals without adding separate metrics. Add
the sysfs interface, documentation and tests.
- "arm64/mm: Standardize printing for pgtable entries" (Anshuman
Khandual):
Use the generic formatter for arm64 page-table entries, ready for
future wider entries. Move the safe-PTE-update check out of the
header to avoid an include cycle.
- "mm: kmsan: fix iounmap metadata teardown" (Dima Koziuk):
Fix KMSAN metadata leaks on iounmap and failed ioremap allocations.
Free backing pages before removing their mappings, and share the
teardown with partial-allocation cleanup.
- "mm/damon/core: preserve quota state when constructing schemes" (Karl
Mehltretter):
Preserve running DAMOS quota state while validating parameter
updates. Even rejected updates could reset accounting and exceed the
quota window; add tests for both accepted and rejected updates.
- "mm/vmalloc: fix vmalloc_dump_obj VA lookup" (Ye Liu):
Fix vmalloc_dump_obj() lookups for last-page addresses and
allocations spanning vmap zones. These allocations were being missed
in diagnostic output.
- "mm: various (urgent?) fixes" (David Hildenbrand):
Fix mmap charge leaks and hugetlb use-after-free, wrong-address
unmapping, stuck locks and endless faults. Also preserve reservations
on failed mremap and handle stale userfaultfd bits.
- "maple_tree: fix maple_range_64 crashes in RCU mode" (Dimitris
Charisis):
Fix pointer and metadata confusion during RCU destruction of
maple_range_64 nodes, avoiding double frees and invalid accesses. Add
a regression test; no in-tree user currently uses this combination.
- "mm: fix hugetlb NR_HUGETLB accounting on folio migration" (Hongfu
Li):
Fix hugetlb migration and preallocation accounting so /proc/vmstat
retains the correct count and memory.numa_stat follows the folio to
its new node.
- "mm/damon: fix a minor bug, clean code, and add a test" (SJ Park):
Fix 32-bit DAMON age overflow which made old regions look young.
Share hugetlb folio acquisition code and add a regression test for
the previously fixed last-region skipping bug.
- "mm/damon/core: cleanup code, reduce stack usage, and add kunit" (SJ
Park):
Reduce kdamond stack usage and remove unused enums. Add deterministic
PSI quota-goal tests which do not depend on the machine's current
memory pressure.
- "mm/damon: fix the temporal goal tuner's size quota conversion"
(Donggeun Yoo):
Bound the temporal tuner's quota conversion to prevent overflow and
zero effective quotas, which could stop schemes making progress. Add
boundary tests.
- "Don't use GFP_DMA when calling dma_alloc_coherent" (Baoquan He):
Remove redundant GFP_DMA flags from coherent DMA allocation calls.
The DMA API already selects the zone from device limits and ignores
the caller's flag.
- "kselftest: mm: fix intermittent failure khugepaged test" (Yeoreum
Yun):
Propagate child-process failures in the khugepaged tests and prevent
background collapse from racing their checks. This removes false
passes and intermittent failures.
- "MAINTAINERS: cover all hugetlb headers under HUGETLB SUBSYSTEM"
(Enze Li):
Cover all hugetlb headers in MAINTAINERS so get_maintainer.pl finds
the right maintainers. Also label the closing hugetlb_cgroup.h
include guard.
Summary of the 65 singletons in this merge:
The singletons include a few worthwhile performance fixes. Avoiding
unnecessary reverse-map tree updates gave a reported 15.9% improvement
in UnixBench's execl test on a 192-core x86 system. A reclaim retry
fix stops defrag_mode from spinning under memory.low protection; a
reported file-creation stress test ran 5.7 times faster, with far less
memory pressure. Narrower hugetlb invalidations also spare KVM guests
needless refaults: the reported Redis-in-VM P99 QPS penalty while
punching holes fell from 7.09% to 1.45%.
Several fixes prevent lost data or corrupted memory. Lazyfree
huge-page races with mremap()/munmap() could lose data or access freed
memory, and MADV_COLD could lose a concurrent write's dirty bit.
Another fix prevents stale migration entries from outliving large
folios. On filesystems with blocks smaller than a page, extending a
file by 4 GiB or more could expose bytes written past the old EOF
through mmap instead of zeroes. That is fixed, along with
use-after-free races in PAGEMAP_SCAN during process exit and in
memory-cgroup accounting on PREEMPT_RT kernels.
Other fixes stop UFFDIO_MOVE spinning forever on pinned large folios,
which could wedge other memory operations, and stop mremap() leaking
commit charges until allocations fail under strict overcommit. A
further fix keeps userfaultfd tracking intact on neighboring mappings.
NUMA binding no longer prevents long-term pins when the chosen node
has only movable memory, fixing QEMU/VFIO startup and io_uring buffer
registration failures. MGLRU also gets a fix for early-boot crashes
with memory cgroups disabled at boot, notably in small crash kernels.
* tag 'mm-stable-2026-10-25-19-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (213 commits)
mm: multi-gen LRU: fix NULL lruvec->pgdat deref with memcg disabled on cmdline
mm/page_counter: use WRITE_ONCE() for emin/elow when parent is the root
mm/memcontrol: publish null pointer before dropping css reference
test_maple_tree: test maple_range_64 node in RCU mode
maple_tree: fix maple_range_64 crashes in RCU mode
mm/vma: avoid broken uffd merge on mremap
tools/testing/shared: catch a failed posix_memalign()
mm/damon/core: remove unreachable damos charge_{target,addr}_from
mm/shrinker: allocate shrinker_info_unit from a dedicated kmem_cache
riscv: mm: exclude invalid THP PMDs from page table check
mm/damon/core: filter out damos address filter-split failed region
fs/proc/task_mmu: pin mm_users in do_pagemap_scan()
mm/mempolicy: apply bind policies against the scoped allocation zone
mm/vmscan: reclaim every zone in per-node proactive reclaim
mm/mremap: correctly uncharge accountable VMAs in error path
mm/mremap: populate calculated fields in vrm state correctly
MAINTAINERS: add an entry for MEMORY MANAGEMENT - MEMORY MAP
mm: bdi: reset min_ratio after the sysfs attributes are gone
mm/page_vma_mapped: continue past nonmatching huge PMDs
selftests/mm: skip hugetlb cgroup v2 tests without the needed controllers
...
|
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|
Linus Torvalds
|
0cc3ad8f4d |
Driver core fixes for 7.4-rc1
- Make parent-lock requirements per device type instead of per bus, fixing a use-after-free on USB disconnect by limiting the requirement to USB interfaces, which retain a reference to their parent - Honor parent-lock requirements during deferred and asynchronous probing, fixing USB interface probe races, including duplicate endpoint creation attempts in sysfs -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQS2q/xV6QjXAdC7k+1FlHeO1qrKLgUCat5gLQAKCRBFlHeO1qrK LtDiAP42G5THtYuYWgtS1S42wNJGEFLAxD5FheBMDu7AfL8QuQD+KbI0FmAhQRp7 avf4YvdeDWE1QZWV5THYvBDqzNB8BQ4= =6oMk -----END PGP SIGNATURE----- Merge tag 'driver-core-7.4-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core Pull driver core fixes from Danilo Krummrich: - Make parent-lock requirements per device type instead of per bus, fixing a use-after-free on USB disconnect by limiting the requirement to USB interfaces, which retain a reference to their parent - Honor parent-lock requirements during deferred and asynchronous probing, fixing USB interface probe races, including duplicate endpoint creation attempts in sysfs * tag 'driver-core-7.4-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: driver core: take parent lock in async device attach driver core: take parent lock on deferred probe driver core: fix parent lock use-after-free on USB disconnect |
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David Hildenbrand (Arm)
|
da7acb8982 |
mm/sparse: remove SECTION_MARKED_PRESENT
All present section iterators run before memory hotplug added any further memory sections, Therefore, we can simply use the SECTION_IS_EARLY flag by setting that flag earlier in sparse_sections_init(). Get rid of SECTION_MARKED_PRESENT entirely and rename for_each_present_section_nr() to for_each_early_section_nr(). Take care of the .clang-format for_each_present_section_nr() handling. No functional change intended. Link: https://lore.kernel.org/20260921-b4-sparsemem_cleanups-v2-10-54d81d65e125@kernel.org Signed-off-by: David Hildenbrand (Arm) <david@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Oscar Salvador <osalvador@suse.de> Acked-by: Lorenzo Stoakes (ARM) <ljs@kernel.org> Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Liam R. Howlett <liam@infradead.org> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Kairui Song <kasong@tencent.com> Cc: Qi Zheng <qi.zheng@linux.dev> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Barry Song <baohua@kernel.org> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Yuanchu Xie <yuanchu@google.com> Cc: Wei Xu <weixugc@google.com> Cc: Baoquan He <baoquan.he@linux.dev> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Brendan Jackman <brendan.jackman@linux.dev> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Zi Yan <ziy@nvidia.com> Cc: Jan Kiszka <jan.kiszka@siemens.com> Cc: Kieran Bingham <kbingham@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Rafael J. Wysocki <rafael@kernel.org> Cc: Danilo Krummrich <dakr@kernel.org> |
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Linus Torvalds
|
2ee2475e15 |
Core memory management updates for 7.4
This includes updates to:
- MEMHP (Memory Hotplug)
- GUP (Get User Pages)
The main change is:
- Reduce zone contiguity checking overhead during memory
hot(un)plug (Yuan Liu)
Other changes include smaller fixes along with various cleanups.
Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>
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Merge tag 'mm-core-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mm/core
Pull core memory management updates from David Hildenbrand:
"This includes updates to:
- MEMHP (Memory Hotplug)
- GUP (Get User Pages)
The main change is:
- Reduce zone contiguity checking overhead during memory hot(un)plug
(Yuan Liu)
Other changes include smaller fixes along with various cleanups"
* tag 'mm-core-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mm/core:
mm/memory_hotplug: fix missing rollback in __add_pages()
mm/memory_hotplug: optimize zone contiguous check when changing pfn range
mm/memory_hotplug: make shrink_zone_span() more robust
mm/gup: honour FOLL_PIN in NOMMU __get_user_pages_locked()
mm/gup_test: report actual pinned bytes
mm/gup_test: safely calculate GUP batch size
mm: gup: cleanup the gup_fast_*() call chain
mm: gup: move pmd_protnone() into gup_fast_pmd_leaf()
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||
|
Linus Torvalds
|
9aa54fb74e |
regmap: Changes for v7.4
This is a relatively busy release, mostly due to the general cleanup
work which people have been doing throughout the kernel - for regmap
that's mostly been some work from Peng Fan. I also added some more
tests for the sparse caches to catch some gotchas people might run into
trying to improve the maple cache.
- Test very high register numbers to help people avoid a nasty gotcha
trying to optimise the maple cache.
- Make more use of scoped lock and allocation guards.
- A couple of other smaller improvements and fixes.
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Merge tag 'regmap-v7.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap updates from Mark Brown:
"This is a relatively busy release, mostly due to the general cleanup
work which people have been doing throughout the kernel - for regmap
that's mostly been some work from Peng Fan.
I also added some more tests for the sparse caches to catch some
gotchas people might run into trying to improve the maple cache.
- Test very high register numbers to help people avoid a nasty gotcha
trying to optimise the maple cache
- Make more use of scoped lock and allocation guards
- A couple of other smaller improvements and fixes"
* tag 'regmap-v7.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: debugfs: Use __free(kfree) for regmap_reg_ranges_read_file
regmap: debugfs: Use guard to simplify code
regmap: debugfs: Use __free(kfree) in regmap_name_read_file()
regmap: fix potential double-free of map->reg_defaults on cache reinit
regmap: use krealloc_array() in regmap_register_patch()
regcache: simplify control flow and reduce nesting
regcache: extract __regcache_sync() to deduplicate sync dispatch
regcache: extract locked helpers to replace open-coded lock/unlock pairs
regmap: debugfs: use the regmap scoped lock guard
regcache: rbtree: use the regmap scoped lock guard
regcache: use the regmap scoped lock guard
regmap: convert lock/unlock to a scoped guard
regmap: fix typo "asynchrnous" in comment
regmap: Test rbtree and maple caches for very high register numbers
regmap: Allow a base register to be specified for the RAM regmap
|
||
|
Linus Torvalds
|
7be4bc52fd |
Driver core changes for 7.4-rc1
- core:
- Add TAINT_FORCED_BIND to taint the kernel and driver module before manual
sysfs bind/unbind operations; make add_taint_module() available to
driver core and update taint decoding tools and documentation
- Constify device_show/store_*() attribute parameters and adapt x86 MCE and
perf users to prepare for const dev_ext_attribute instances
- Fix UAF in NUMA access node registration failure handling by dropping
the device reference with put_device() instead of directly freeing the node
- debugfs:
- Make debugfs_create_str() read-only to eliminate double-free races between
concurrent writers; reject writable modes; convert interconnect and
SoundWire users to local file operations with mutex-protected strings
- kobject:
- Fix out-of-bounds access in kobject_action_type() when parsing action
strings containing embedded NUL bytes
- Fix the kobject_set_name() reference in kset_register() kernel-doc
- Rust:
- DMA:
- Tie Coherent, CoherentBox and CoherentHandle to the device's bound
lifetime to prevent retaining DMA allocations beyond driver unbind;
propagate the lifetime through nova-core and the DMA sample driver
- I/O:
- Require explicit base types for registers and replace relative registers
with typed subregion projections; reimplement register!() as a proc
macro, support registers using existing types without inline bitfields,
and convert nova-core, Tyr and the PCI sample; add AsRepr/AsReprMut and
transmute helpers with deferred size checks for representation
conversions
- Wrap ResourceSize in a transparent newtype with explicit conversions,
including checked conversion to usize
- PCI:
- Add typed PCIe extended capability lookup and SR-IOV accessors for the
First VF Offset and decoded VF BAR addresses and widths, keeping raw
SR-IOV registers private to preserve PCI core ownership of their state
- scatterlist:
- Honor the device's maximum segment size as well as the DMA mapping limit
when constructing SG tables
- Return u32 from SGEntry::dma_len() to match the C segment length type
- misc:
- Validate auxiliary DeviceId name length explicitly to improve
compile-time diagnostics for oversized device ID table entries
- Drop unnecessary 'static bounds from debugfs ScopedDir file creation
methods to support data containing non-'static references, including DMA
buffers
- misc:
- Add Johan Hovold as driver core maintainer
- Simplify platform_device_alloc() by returning early on allocation failure
- Fix typos in driver core and kernfs comments
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Merge tag 'driver-core-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core
Pull driver core updates from Danilo Krummrich:
"Core:
- Add TAINT_FORCED_BIND to taint the kernel and driver module before
manual sysfs bind/unbind operations; make add_taint_module()
available to driver core and update taint decoding tools and
documentation
- Constify device_show/store_*() attribute parameters and adapt x86
MCE and perf users to prepare for const dev_ext_attribute instances
- Fix UAF in NUMA access node registration failure handling by
dropping the device reference with put_device() instead of directly
freeing the node
debugfs:
- Make debugfs_create_str() read-only to eliminate double-free races
between concurrent writers; reject writable modes; convert
interconnect and SoundWire users to local file operations with
mutex-protected strings
kobject:
- Fix out-of-bounds access in kobject_action_type() when parsing
action strings containing embedded NUL bytes
- Fix the kobject_set_name() reference in kset_register() kernel-doc
Rust:
- DMA:
- Tie Coherent, CoherentBox and CoherentHandle to the device's
bound lifetime to prevent retaining DMA allocations beyond
driver unbind; propagate the lifetime through nova-core and the
DMA sample driver
- I/O:
- Require explicit base types for registers and replace relative
registers with typed subregion projections; reimplement
register!() as a proc macro, support registers using existing
types without inline bitfields, and convert nova-core, Tyr and
the PCI sample; add AsRepr/AsReprMut and transmute helpers with
deferred size checks for representation conversions
- Wrap ResourceSize in a transparent newtype with explicit
conversions, including checked conversion to usize
- PCI:
- Add typed PCIe extended capability lookup and SR-IOV accessors
for the First VF Offset and decoded VF BAR addresses and widths,
keeping raw SR-IOV registers private to preserve PCI core
ownership of their state
- scatterlist:
- Honor the device's maximum segment size as well as the DMA
mapping limit when constructing SG tables
- Return u32 from SGEntry::dma_len() to match the C segment length
type
- misc:
- Validate auxiliary DeviceId name length explicitly to improve
compile-time diagnostics for oversized device ID table entries
- Drop unnecessary 'static bounds from debugfs ScopedDir file
creation methods to support data containing non-'static
references, including DMA buffers
Misc:
- Add Johan Hovold as driver core maintainer
- Simplify platform_device_alloc() by returning early on allocation
failure
- Fix typos in driver core and kernfs comments"
* tag 'driver-core-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (41 commits)
rust: pci: add extended capability and SR-IOV support
kobject: Fix the kobj_set_name reference in kset_register() kernel-doc
rust: io: convert ResourceSize into a transparent newtype
rust: scatterlist: return u32 from SGEntry::dma_len()
MAINTAINERS: add myself as driver core maintainer
debugfs: make debugfs_create_str() read-only
soundwire: debugfs: replace writable string helper
interconnect: debugfs: replace writable string helper
docs: admin-guide: Handle TAINT_FORCED_BIND when parsing /proc/sys/kernel/tainted
driver core: platform: Simplify platform_device_alloc()
kobject: fix out-of-bounds access in kobject_action_type()
rust: scatterlist: honor the device's maximum segment size
driver core: add TAINT_FORCED_BIND for when userspace manually messes with devices and drivers
module: fix up documentation for add_taint() and add_taint_module()
module: pull out add_taint_module() to be public
driver core: Constify the signature of device_show/store_*()
drivers: perf: Use __DEVICE_ATTR() macro to initialize dev_ext_attribute
x86/mce: Use __DEVICE_ATTR() macro to initialize dev_ext_attribute
rust: auxiliary: validate DeviceId name length
driver core: fix typos in comments
...
|
||
|
Linus Torvalds
|
df37e39242 |
Power management updates for 7.4-rc1
- Fix multiple issues related to input validation, synchronization,
access safety, memory layout and register field validation, and error
handling in the ACPI CPPC library (Christian Loehle and Sumit Gupta)
- Select the frequency-invariance callback per CPU in the CPPC cpufreq
driver and create the FIE worker before enabling PCC callbacks in it
to avoid queueing work through a missing worker and dereferencing a
NULL pointer (Christian Loehle)
- Update the CPPC cpufreq driver entry in MAINTAINERS and add a new
entry for the ACPI CPPC library (Christian Loehle)
- Minor fixes in various cpufreq drivers (Alexander Koskovich, Daniel
Schwierzeck, Frank Zhang, Haotian Zhang, Kathiravan Thirumoorthy,
Sumeet Pawnikar, and Xueqin Luo)
- Fix wrong behaviors on multi-node servers in the Loongson cpufreq
driver (Huacai Chen)
- Reject NULL from cpufreq_cpu_get() in the Rust code (Mehmet Koseoglu)
- Add suspend OPP to mediatek cpufreq driver and DT (Ryan Brue)
- Fixups for a few bugs identified by Sashiko in the amd-pstate cpufreq
driver (Mario Limoncielloi, Wentao Guan)
- Initial support for maximum frequency capacity handling on Zen6
client in amd-pstate (Mario Limonciello)
- Fix for amd-pstate-ut with 'Requested CPU Min frequency' BIOS option
(K Prateek Nayak)
- New Zen6 tuning values for EPP in amd-pstate (Mario Limonciello,
Vishal Badole)
- amd-pstate documentation fix (Karl Mehltretter)
- Restrict deferred downscaling to low load for shared policies in the
conservative cpufreq governor to avoid undesirable CPU frequency
reduction in some cases (Shengming Hu)
- Serialize sugov_start() against rate limit updates in the schedutil
cpufreq governor to avoid using a stale rate limit value (Hui Su)
- Prevent cpuidle governors menu and teo from returning idle state 0
after it has been disabled (Xueqin Luo)
- Replace min_t() with the better alternatives in the intel_idle driver
and make it use 2-argument strscpy() (Andy Shevchenko)
- Fix two repeated phrase instances in cpuidle (Hemanth Selam, Syazwina
Fazrul)
- Add rugged Panther Lake support to the intel_rapl power capping
driver and make it use %pe for printing error pointers (Srinivas
Pandruvada and Sumeet Pawnikar)
- Update and improve runtime PM documentation and add a kunit test for
supplier idle/suspend (Brian Norris)
- Add a pm_runtime_dont_use_autosuspend() call to pm_runtime_reinit()
to ensure autosuspend disabling on driver teardown (Joshua Crofts)
- Ignore page-zero RAM in E820 checksum during hibernation on x86 to
avoid rejecting images created after kexec() (Matthias Goergens)
- Add resume event mapping for PMSG_POWEROFF to the PM core to allow it
to carry out device shutdown in the future (Mario Limonciello)
- Add DPM watchdog to prepare/late/early/noirq/complete phases of
device suspend and resume (Mayank Rungta)
- Update swsusp.txt references to swsusp.rst in hibernation
documentation (Li Jun)
- Fix use-after-free of perf domain in netlink doit handlers for energy
models (Fan Wu)
- Add synchronize_rcu() back to cpu_pm_unregister_notifier() after it
was removed inadvertently in previous development cycles to avoid
use-after-free (Bradley Morgan)
- Unregister CPU PM notifier outside the timer lock in the timer-ti-dm
clocksource driver (Bradley Morgan)
- Fix typo "sucessfully" in a comment in pm_clk_add_clk() kerneldoc
comment and typo "hierachy" in a comment in pm-graph (Hemanth Selam)
- Fix the return value in dev_pm_opp_get_of_node() kernel-doc (Karl
Mehltretter)
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Merge tag 'pm-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"This time, the most visible part are the ACPI CPPC updates from
Christian Loehle, including CPPC cpufreq driver changes, even though
updates of cpufreq drivers proper are still the largest topic group.
However, the updates of cpufreq drivers depend on the ACPI CPPC
updates, so they should really be counted together and that is well
over 1/2 of the total commit count.
Interestingly enough, almost all of the updates included here are
fixes or cleanups, with some new feature support in the amd-pstate
cpufreq driver and IPQ9650 support in the qcom-nvmem cpufreq driver.
The runtime PM documentation improvements from Brian Norris can also
be mostly regarded as fixes, but a new kunit test goes along with
them.
Specifics:
- Fix multiple issues related to input validation, synchronization,
access safety, memory layout and register field validation, and
error handling in the ACPI CPPC library (Christian Loehle and Sumit
Gupta)
- Select the frequency-invariance callback per CPU in the CPPC
cpufreq driver and create the FIE worker before enabling PCC
callbacks in it to avoid queueing work through a missing worker and
dereferencing a NULL pointer (Christian Loehle)
- Update the CPPC cpufreq driver entry in MAINTAINERS and add a new
entry for the ACPI CPPC library (Christian Loehle)
- Minor fixes in various cpufreq drivers (Alexander Koskovich, Daniel
Schwierzeck, Frank Zhang, Haotian Zhang, Kathiravan Thirumoorthy,
Sumeet Pawnikar, and Xueqin Luo)
- Fix wrong behaviors on multi-node servers in the Loongson cpufreq
driver (Huacai Chen)
- Reject NULL from cpufreq_cpu_get() in the Rust code (Mehmet
Koseoglu)
- Add suspend OPP to mediatek cpufreq driver and DT (Ryan Brue)
- Fixups for a few bugs identified by Sashiko in the amd-pstate
cpufreq driver (Mario Limoncielloi, Wentao Guan)
- Initial support for maximum frequency capacity handling on Zen6
client in amd-pstate (Mario Limonciello)
- Fix for amd-pstate-ut with 'Requested CPU Min frequency' BIOS
option (K Prateek Nayak)
- New Zen6 tuning values for EPP in amd-pstate (Mario Limonciello,
Vishal Badole)
- amd-pstate documentation fix (Karl Mehltretter)
- Restrict deferred downscaling to low load for shared policies in
the conservative cpufreq governor to avoid undesirable CPU
frequency reduction in some cases (Shengming Hu)
- Serialize sugov_start() against rate limit updates in the schedutil
cpufreq governor to avoid using a stale rate limit value (Hui Su)
- Prevent cpuidle governors menu and teo from returning idle state 0
after it has been disabled (Xueqin Luo)
- Replace min_t() with the better alternatives in the intel_idle
driver and make it use 2-argument strscpy() (Andy Shevchenko)
- Fix two repeated phrase instances in cpuidle (Hemanth Selam,
Syazwina Fazrul)
- Add rugged Panther Lake support to the intel_rapl power capping
driver and make it use %pe for printing error pointers (Srinivas
Pandruvada and Sumeet Pawnikar)
- Update and improve runtime PM documentation and add a kunit test
for supplier idle/suspend (Brian Norris)
- Add a pm_runtime_dont_use_autosuspend() call to pm_runtime_reinit()
to ensure autosuspend disabling on driver teardown (Joshua Crofts)
- Ignore page-zero RAM in E820 checksum during hibernation on x86 to
avoid rejecting images created after kexec() (Matthias Goergens)
- Add resume event mapping for PMSG_POWEROFF to the PM core to allow
it to carry out device shutdown in the future (Mario Limonciello)
- Add DPM watchdog to prepare/late/early/noirq/complete phases of
device suspend and resume (Mayank Rungta)
- Update swsusp.txt references to swsusp.rst in hibernation
documentation (Li Jun)
- Fix use-after-free of perf domain in netlink doit handlers for
energy models (Fan Wu)
- Add synchronize_rcu() back to cpu_pm_unregister_notifier() after it
was removed inadvertently in previous development cycles to avoid
use-after-free (Bradley Morgan)
- Unregister CPU PM notifier outside the timer lock in the
timer-ti-dm clocksource driver (Bradley Morgan)
- Fix typo "sucessfully" in a comment in pm_clk_add_clk() kerneldoc
comment and typo "hierachy" in a comment in pm-graph (Hemanth
Selam)
- Fix the return value in dev_pm_opp_get_of_node() kernel-doc (Karl
Mehltretter)"
* tag 'pm-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (89 commits)
cpufreq: loongson3: Replace IOCSR read/write with MMIO ones
cpufreq: loongson3: Use global physical CPU ID in get/target callbacks
cpufreq: loongson3: Replace per-package mutex with per-node
cpufreq: loongson3: Adjust the width of id and val in smc_message
cpufreq: loongson3: Make this driver depend on MACH_LOONGSON64
PM: runtime: Expand introduction with core concepts and structure
cpufreq: schedutil: Serialize sugov_start() against rate limit updates
MAINTAINERS: ACPI: Add a separate CPPC entry
MAINTAINERS: cpufreq: Replace CPPC reviewer
arm64: dts: mediatek: mt8173: Mark the lowest CPU OPPs for suspend
cpufreq: mediatek: Enter system sleep at the suspend OPP
cpufreq: qcom-cpufreq-hw: fix device node refcount leak in phandle parsing
cpufreq: qcom-nvmem: Add IPQ9650 support
cpufreq: Add Milos to cpufreq-dt-platdev blocklist
cpufreq: Use %pe to print error pointers symbolically
rust: rcpufreq_dt: add module alias
cpufreq: sti: avoid NULL dereference in dev_err()
cpufreq: tegra194: fix double-pointer error in get_cpu_ndiv
cpufreq: sparc-us2e: fix frequency table index copy-paste error
rust: cpufreq: reject NULL from cpufreq_cpu_get()
...
|
||
|
Linus Torvalds
|
4df4d2a577 |
ACPI support updates for 7.4-rc1
- Make the core ACPI device enumeration code stop attempting to
initialize ACPI power management for devices before they are
known to be present and functional (Rafael Wysocki)
- Simplify and clean up the core ACPI device enumeration code on top of
the previous adjustment and reduce debug noise coming from it (Rafael
Wysocki)
- Fix locking in the code binding devices to their ACPI companions,
prevent it from replacing a valid ACPI companion pointer with NULL
incidentally, improve its messaging (including debug noise
reduction), and reduce its overhead by making it skip the cases in
which no ACPI companion may exist early (Rafael Wysocki)
- Reduce runtime memory footprint of struct acpi_device by rearranging
fields in it (Andy Shevchenko)
- Update the driver core to allow bus types without drivers to be
registered as "companion bus types" without driver-related sysfs
attributes and register the ACPI bus type as a companion one (Rafael
Wysocki)
- Use strscpy() instead of strcpy() in the ACPI sysfs interface (Ruslan
Vagner)
- Remove __meminitdata from hmat_adist_nb declaration preserving it
even when CONFIG_MEMORY_HOTPLUG is not set to prevent notifier chain
corruption in some cases (Alejandro Lucero)
- Prevent a NULL pointer dereference when attempting to read the table
length after a mapping bookkeeping failure during an initrd override
invocation with permanent table mappings enabled (Slavin Liu)
- Use for_each_populated_zone() in get_node_num() in the MRRM table
pareser (Sang-Heon Jeon)
- Use vsnprintf() in acpi_os_vprintf() to prevent memory corruption
resulting from overly long diagnostic messages that may not fit into
a static buffer used by ACPICA and may be produced by a malformed
ACPI table (Vlatko Kosturjak)
- Ignore leading root scope prefix in string _UID match to allow AMD
IOMMU matching to work as expected in some cases (Mario Limonciello)
- Adjust message printing macros for ACPI objects to use dev_fmt() for
more consistency with the analogous dev_*() macros (Rafael Wysocki)
- Add _Ixx GPE wake indicator support to the x86 suspend-to-idle
handling code (Saranya Gopal)
- Clear driver_data before free in the ACPI PCI Link driver to prevent
a dangling pointer from being used later (Jiale Yao)
- Accumulate the queued flag across error sections of a CPER record in
ghes_do_proc() to prevent it from being cleared by a later section or
entry that does not queue memory-failure work (Breno Leitao)
- Map a raw PCI AER Capability image field by field to prevent
information loss from occurring while processing it (Dave Jiang)
- Update a stale driver source reference in the ACPI APEI EINJ driver
documentation (Prabhakar Pujeri)
- Reject CPER records with an out-of-range error_data_length or an
error status block length wrapping a u32 in the EFI CPER driver (Dave
Jiang)
- Address multiple assorted issues in the ACPI extlog driver (Dave
Jiang)
- Address two issues related to CXL in the ACPI APEI GHES driver (Dave
Jiang)
- Read only validated fields in cper_mem_err_pack() (Dave Jiang)
- Validate memory error section length before payload access, prevent
writes past array bounds from occurring and sanitize software
metadata in the ACPI APEI GHES driver (Dave Jiang)
- Make cxl_cper_handle_prot_err() static (Dave Jiang)
- Add IOVT IOMMU support to ACPICA (Bibo Mao)
- Fix PCC OperationRegion command offsets in ACPICA (Sudeep Holla)
- Fix memory leak in acpi_ds_create_field() related to the handling of
internal_pcc_buffer allocations (Breno Leitao)
- Fix memory leak due to leftover devm_kcalloc() argument in the ACPI
fan driver (Rafael Wysocki)
- Fix backlight unregistration ordering in the ACPI video bus device
driver (Rafael Wysocki)
- Update the thermal core to allow the registration of thermal class
cooling devices under specific parents and convert the ACPI fan,
ACPI processor, and ACPI video bus device drivers to do so (Rafael
Wysocki)
- Adjust the ACPI thermal zone driver to use thermal class cooling
device parent information for binding cooling devices to trip points
in thermal zones (Rafael Wysocki)
- Use cooling device data that is a better match for a given driver
instead of a struct acpi_device pointer that had to be used for
this purpose previously in the ACPI fan and processor drivers (Rafael
Wysocki)
- Fix acpi_thermal_guess_offset() in the ACPI thermal zone driver for
thermal zone devices with a 273.0°K offset (Hans de Goede)
- Define a free for ACPI objects allocated by ACPICA helpers and use
it to simplify AML error handling in the ACPI fan driver (Rafael
Wysocki)
- Switch over the users of acpi_get_first_physical_node(), that
was inherently racy and therefore not really safe to use, to use
its replacement acpi_bus_get_primary_device(), and eliminate the
former (Rafael Wysocki)
- Add !CONFIG_ACPI stubs for acpi_find_child_device() and
acpi_device_uid() (Mario Limonciello and Robin Murphy)
- Fix bogus cycle count values on systems without _BIX in the ACPI
battery driver (Armin Wolf)
- Fix NULL pointer dereference on allocation failure and report
relative state of charge as CAPACITY in the ACPI SBS driver (Itay
Shem-tov and Guangshuo Li)
- Add lid_init_state quirk for Razer Blade Stealth 13 (Early 2020)
RZ09-0310 to the ACPI button driver (Ian Gallagher)
- Add new quirks to force the native backlight on Dell OptiPlex AIO
7410 35W and Acer Nitro AN515-58 in the ACPI video bus device
driver (Chitransh Mandhaniya and Dirga Yuza)
- Fix the shared memory signature handling in the ACPI PCC address
space handler, free the PCC mailbox channel on operation region
deactivation, and avoid unnecessary repeated computations of the
PCC operation region command timeout (Sudeep Holla)
- Fix a log message typo in the ACPI NUMA support code (Hemanth Selam)
- Zero-initialize capability query result in the ACPI Platform Firmware
Runtime Update and Telemetry driver to avoid disclosure of kernel
stack data to user space (Karl Mehltretter)
- Replace the remaining built-in/module check for CONFIG_ACPI_WMI in a
header file with IS_ENABLED() macro (Lalit Shankar Chowdhury)
- Retry probing battery docks after hotplug in the ACPI docking station
driver to avoid missing ACPI add notifications (Vibhor Goel)
- Detach device after resource transition failure in pnp_device_probe()
to avoid blocking later manual PNP configuration attempts (Myeonghun
Pak)
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Merge tag 'acpi-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI support updates from Rafael Wysocki:
"The most significant change here is the rework of the core ACPI device
enumeration code to avoid initializing ACPI power management
prematurely for devices with unmet dependencies. This essentially is a
problem fix, but it requires taking PCI device enumeration ordering
into account among other things, so it is far from straightforward.
There was an attempt to do this in the 7.3 time frame that had to be
reverted, so this time it is done much more carefully.
There is also an ACPI thermal control update rearranging the code to
register thermal class cooling devices under specific parents, which
is visible in sysfs. This helps to figure out what is represented by
those devices much more easily, but it also allows the binding of
cooling devices to trip points in thermal zones to be adjusted so it
need not rely on specific cooling device data usage in thermal
drivers.
From the number of commits perspective, the most visible part is the
one replacing acpi_get_first_physical_node() with
acpi_bus_get_primary_device() everywhere and dropping the former that
was inherently racy and generally unsafe to use. Fortunately, the
maintainers involved responded timely and all of that could be done
within one development cycle.
Another quite visible part is Dave Jiang's series fixing multiple
issues reported by Sashiko in the ACPI APEI support code with a PCI
AER improvement on top. It took several iterations of this to make
Sashiko happy and the code in question should be much more robust
going forward.
One other thing worth mentioning separately is that the ACPI bus type
is now going to be registered as a "companion" one and it will not be
possible to register a driver binding directly to a struct
acpi_device. All of the existing users of those drivers in the tree
were converted to platform drivers in the previous cycles, so this is
just a final step in a longer journey.
Apart from the above, there are many fixes, mostly in drivers, with a
noticeable exception of a fix in the code binding devices to their
ACPI companions, new IOVT IOMMU support in ACPICA, new _Ixx object
support for suspend-to-idle on x86, multiple new quirks, mostly
related to unused ACPI power resources and backlight handling, and
assorted cleanups.
Specifics:
- Make the core ACPI device enumeration code stop attempting to
initialize ACPI power management for devices before they are known
to be present and functional (Rafael Wysocki)
- Simplify and clean up the core ACPI device enumeration code on top
of the previous adjustment and reduce debug noise coming from it
(Rafael Wysocki)
- Fix locking in the code binding devices to their ACPI companions,
prevent it from replacing a valid ACPI companion pointer with NULL
incidentally, improve its messaging (including debug noise
reduction), and reduce its overhead by making it skip the cases in
which no ACPI companion may exist early (Rafael Wysocki)
- Reduce runtime memory footprint of struct acpi_device by
rearranging fields in it (Andy Shevchenko)
- Update the driver core to allow bus types without drivers to be
registered as "companion bus types" without driver-related sysfs
attributes and register the ACPI bus type as a companion one
(Rafael Wysocki)
- Use strscpy() instead of strcpy() in the ACPI sysfs interface
(Ruslan Vagner)
- Remove __meminitdata from hmat_adist_nb declaration preserving it
even when CONFIG_MEMORY_HOTPLUG is not set to prevent notifier
chain corruption in some cases (Alejandro Lucero)
- Prevent a NULL pointer dereference when attempting to read the
table length after a mapping bookkeeping failure during an initrd
override invocation with permanent table mappings enabled (Slavin
Liu)
- Use for_each_populated_zone() in get_node_num() in the MRRM table
pareser (Sang-Heon Jeon)
- Use vsnprintf() in acpi_os_vprintf() to prevent memory corruption
resulting from overly long diagnostic messages that may not fit
into a static buffer used by ACPICA and may be produced by a
malformed ACPI table (Vlatko Kosturjak)
- Ignore leading root scope prefix in string _UID match to allow AMD
IOMMU matching to work as expected in some cases (Mario
Limonciello)
- Adjust message printing macros for ACPI objects to use dev_fmt()
for more consistency with the analogous dev_*() macros (Rafael
Wysocki)
- Add _Ixx GPE wake indicator support to the x86 suspend-to-idle
handling code (Saranya Gopal)
- Clear driver_data before free in the ACPI PCI Link driver to
prevent a dangling pointer from being used later (Jiale Yao)
- Accumulate the queued flag across error sections of a CPER record
in ghes_do_proc() to prevent it from being cleared by a later
section or entry that does not queue memory-failure work (Breno
Leitao)
- Map a raw PCI AER Capability image field by field to prevent
information loss from occurring while processing it (Dave Jiang)
- Update a stale driver source reference in the ACPI APEI EINJ driver
documentation (Prabhakar Pujeri)
- Reject CPER records with an out-of-range error_data_length or an
error status block length wrapping a u32 in the EFI CPER driver
(Dave Jiang)
- Address multiple assorted issues in the ACPI extlog driver (Dave
Jiang)
- Address two issues related to CXL in the ACPI APEI GHES driver
(Dave Jiang)
- Read only validated fields in cper_mem_err_pack() (Dave Jiang)
- Validate memory error section length before payload access, prevent
writes past array bounds from occurring and sanitize software
metadata in the ACPI APEI GHES driver (Dave Jiang)
- Make cxl_cper_handle_prot_err() static (Dave Jiang)
- Add IOVT IOMMU support to ACPICA (Bibo Mao)
- Fix PCC OperationRegion command offsets in ACPICA (Sudeep Holla)
- Fix memory leak in acpi_ds_create_field() related to the handling
of internal_pcc_buffer allocations (Breno Leitao)
- Fix memory leak due to leftover devm_kcalloc() argument in the ACPI
fan driver (Rafael Wysocki)
- Fix backlight unregistration ordering in the ACPI video bus device
driver (Rafael Wysocki)
- Update the thermal core to allow the registration of thermal class
cooling devices under specific parents and convert the ACPI fan,
ACPI processor, and ACPI video bus device drivers to do so (Rafael
Wysocki)
- Adjust the ACPI thermal zone driver to use thermal class cooling
device parent information for binding cooling devices to trip
points in thermal zones (Rafael Wysocki)
- Use cooling device data that is a better match for a given driver
instead of a struct acpi_device pointer that had to be used for
this purpose previously in the ACPI fan and processor drivers
(Rafael Wysocki)
- Fix acpi_thermal_guess_offset() in the ACPI thermal zone driver for
thermal zone devices with a 273.0°K offset (Hans de Goede)
- Define a free for ACPI objects allocated by ACPICA helpers and use
it to simplify AML error handling in the ACPI fan driver (Rafael
Wysocki)
- Switch over the users of acpi_get_first_physical_node(), that was
inherently racy and therefore not really safe to use, to use its
replacement acpi_bus_get_primary_device(), and eliminate the former
(Rafael Wysocki)
- Add !CONFIG_ACPI stubs for acpi_find_child_device() and
acpi_device_uid() (Mario Limonciello and Robin Murphy)
- Fix bogus cycle count values on systems without _BIX in the ACPI
battery driver (Armin Wolf)
- Fix NULL pointer dereference on allocation failure and report
relative state of charge as CAPACITY in the ACPI SBS driver (Itay
Shem-tov and Guangshuo Li)
- Add lid_init_state quirk for Razer Blade Stealth 13 (Early 2020)
RZ09-0310 to the ACPI button driver (Ian Gallagher)
- Add new quirks to force the native backlight on Dell OptiPlex AIO
7410 35W and Acer Nitro AN515-58 in the ACPI video bus device
driver (Chitransh Mandhaniya and Dirga Yuza)
- Fix the shared memory signature handling in the ACPI PCC address
space handler, free the PCC mailbox channel on operation region
deactivation, and avoid unnecessary repeated computations of the
PCC operation region command timeout (Sudeep Holla)
- Fix a log message typo in the ACPI NUMA support code (Hemanth
Selam)
- Zero-initialize capability query result in the ACPI Platform
Firmware Runtime Update and Telemetry driver to avoid disclosure of
kernel stack data to user space (Karl Mehltretter)
- Replace the remaining built-in/module check for CONFIG_ACPI_WMI in
a header file with IS_ENABLED() macro (Lalit Shankar Chowdhury)
- Retry probing battery docks after hotplug in the ACPI docking
station driver to avoid missing ACPI add notifications (Vibhor
Goel)
- Detach device after resource transition failure in
pnp_device_probe() to avoid blocking later manual PNP configuration
attempts (Myeonghun Pak)"
* tag 'acpi-7.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (90 commits)
ACPI: PM: Add Acer Aspire A515-53G to dmi_leave_unused_power_resources_on[]
ACPI: video: force native backlight on Dell OptiPlex AIO 7410 35W
ACPI: PM: sleep: Drop unused sleep_no_lps0 define
ACPI: PM: Add unused power resource quirk for Casper Excalibur G900
ACPI: dock: Retry probing battery docks after hotplug
ACPI: PCI: pci_link: clear driver_data before free
ACPI: APEI: accumulate the queued flag across error sections
ACPICA: actbl2.h: Add bit constants of the Flags field in the IOVT IOMMU structure
ACPI: bus: Drop acpi_get_first_physical_node()
efi/dev-path-parser: Switch to use acpi_bus_get_primary_device()
ALSA: hda: tas2781: Switch to use acpi_bus_get_primary_device()
ALSA: hda: cs35l41: Switch to use acpi_bus_get_primary_device()
iommu/arm-smmu-v3: Switch to use acpi_bus_get_primary_device()
PCI/AER: Map a raw AER Capability image field by field
ACPI: NUMA: fix typo in log message
ACPI: Add stub for acpi_find_child_device()
driver core/ACPI: Introduce companion_bus_register()
ACPI: PCC: Cache OpRegion command timeout
ACPI: PCC: Free channel on OpRegion deactivation
ACPI: PCC: Preserve shared memory signature in OpRegion handler
...
|
||
|
Qinguang Xu
|
1ea2927c1b |
regmap: irq: fix incorrect index calculation for read_sub_irq_data()
While working on a PMIC driver that utilizes num_main_regs > 1, this issue was noticed. Currently, no in-tree driver sets `num_main_regs > 1`, so this bug has not been triggered in practice. Pass the global index calculated with `i` instead of the local bit offset `b` to read_sub_irq_data(). Fix an off-by-one error in the index bounds check. This patch has been compile-tested only. Signed-off-by: Qinguang Xu <guang.cy2023@gmail.com> Link: https://patch.msgid.link/20261020-debug-v1-1-44e0491ede30@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Linus Torvalds
|
cb95904b47 |
Scheduler updates:
Kconfig updates:
- Simplify PREEMPT_DYNAMIC (Mark Rutland)
Fair scheduler updates:
- Remove redundant RUN_TO_PARITY check (Elif Topuz)
- Declare augmented callbacks per field, fix rb_add_augmented_cached()
descent (Yiwei Lin, Peter Zijlstra)
- Restart fair hrtick after same-task repicks (Shubhang Kaushik)
- Improve the scheduling latency of short slice tasks (Vincent Guittot)
Deadline/RT scheduler updates:
- Check start_dl_timer expiry with ktime_before()
(Liang Hao)
- irq_work: CPU-hotplug improvements on PREEMPT_RT (Sebastian Andrzej
Siewior)
Energy-aware scheduling updates:
- Implement the steal_governor, introduce preferred CPUs and
steal-driven vCPU backoff (Shrikanth Hegde)
Multi-processor load-balancing updates:
- Enable preferred SMT siblings on NVIDIA Olympus (Andrea Righi)
- Randomize equally shallow idle CPU picks (Christian Loehle)
- Remove redundant core_sched_seq (Hui Su)
Cache-aware scheduling updates:
- Avoid publishing partial LLC utilization (Jemmy Wong)
NUMA-balancing updates:
- Reset NUMA fault locality after scan period update (Eric Kim)
Proxy execution updates:
- Ongoing work to implement sleeping owner handling for proxy
execution (John Stultz, Vasily Gorbik)
- Preparatory steps to make sched_ext compatible with proxy
execution (Andrea Righi)
Scheduler infrastructure updates & fixes:
- Remove the RCU wait from PSI trigger destruction (Shakeel Butt)
- Avoid modifying wait-entry on failed priority registration
(Hui Su)
- Use the new static key API for sched_feat (Hongyan Xia)
- Convert paravirt_steal to new static key APIs (Hongyan Xia)
- cputime: Don't account idle time twice after dyntick-idle
(Stian Halseth)
Scheduler debugging updates:
- Set TIF_NEED_RESCHED before calling __trace_set_need_resched()
(Sechang Lim)
- Fix context analysis errors in non-preferred CPU push (Shrikanth
Hegde)
Misc cleanups and fixes by Christian Loehle, Shubhang Kaushik,
Thomas Huth and Vladimir Zapolskiy.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2026-10-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Kconfig updates:
- Simplify PREEMPT_DYNAMIC (Mark Rutland)
Fair scheduler updates:
- Remove redundant RUN_TO_PARITY check (Elif Topuz)
- Declare augmented callbacks per field, fix
rb_add_augmented_cached() descent (Yiwei Lin, Peter Zijlstra)
- Restart fair hrtick after same-task repicks (Shubhang Kaushik)
- Improve the scheduling latency of short slice tasks (Vincent
Guittot)
Deadline/RT scheduler updates:
- Check start_dl_timer expiry with ktime_before() (Liang Hao)
- irq_work: CPU-hotplug improvements on PREEMPT_RT (Sebastian Andrzej
Siewior)
Energy-aware scheduling updates:
- Implement the steal_governor, introduce preferred CPUs and
steal-driven vCPU backoff (Shrikanth Hegde)
Multi-processor load-balancing updates:
- Enable preferred SMT siblings on NVIDIA Olympus (Andrea Righi)
- Randomize equally shallow idle CPU picks (Christian Loehle)
- Remove redundant core_sched_seq (Hui Su)
Cache-aware scheduling updates:
- Avoid publishing partial LLC utilization (Jemmy Wong)
NUMA-balancing updates:
- Reset NUMA fault locality after scan period update (Eric Kim)
Proxy execution updates:
- Ongoing work to implement sleeping owner handling for proxy
execution (John Stultz, Vasily Gorbik)
- Preparatory steps to make sched_ext compatible with proxy execution
(Andrea Righi)
Scheduler infrastructure updates & fixes:
- Remove the RCU wait from PSI trigger destruction (Shakeel Butt)
- Avoid modifying wait-entry on failed priority registration
(Hui Su)
- Use the new static key API for sched_feat (Hongyan Xia)
- Convert paravirt_steal to new static key APIs (Hongyan Xia)
- cputime: Don't account idle time twice after dyntick-idle
(Stian Halseth)
Scheduler debugging updates:
- Set TIF_NEED_RESCHED before calling __trace_set_need_resched()
(Sechang Lim)
- Fix context analysis errors in non-preferred CPU push (Shrikanth
Hegde)
Misc cleanups and fixes by Christian Loehle, Shubhang Kaushik,
Thomas Huth and Vladimir Zapolskiy"
* tag 'sched-core-2026-10-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (64 commits)
sched: Replace nr_iowait_cpu() with a bool accessor
Revert "sched/fair: Remove dead code on enqueue_task_fair()"
sched/cache: Avoid publishing partial LLC utilization
sched/cputime: Don't account idle time twice after dyntick-idle
sched/psi: Remove the RCU wait from trigger destruction
sched/eevdf: Remove redundant RUN_TO_PARITY check
sched/wait: Avoid modifying entry on failed priority registration
rbtree_test: Use rb_add_augmented_cached() for the cached augmented test
rbtree: Update augmented data on the way down in rb_add_augmented_cached()
rbtree: Declare augmented callbacks per field with RB_AUG()
rbtree_test: Use rb_add() and rb_add_cached() for the basic tests
smpboot: Don't park the thread if work is pending
irq_work: Flush lazy work CPU down on PREEMPT_RT
irq_work: Update a comment regarding CPU hotplug invocation
sched/topology: Add asymmetric SMT packing override
sched/fair: Honor asymmetric SMT priority in idle selection
sched: Set TIF_NEED_RESCHED before calling __trace_set_need_resched()
sched/core: Fix context analysis errors in non-preferred CPU push
virt/steal_governor: Enable the driver
virt/steal_governor: Implement steal_governor policy loop
...
|
||
|
Linus Torvalds
|
ae171014b7 |
- Orphan several EDAC drivers: i82975x, x38, xgene, i3200. Those have been
receiving just drive-by updates and no one really uses them. At least there
are no traces of usage on the mailing lists. So, with the advent of
AI-generated fixes frenzy, and because no one can really test fixes on
those, it is time to sunset them and point them towards the eternal happy
hunting-grounds
- Add a dummy EDAC driver with which the EDAC core glue can be exercised in
a VM for the cases where one does not necessarily have access to the
hardware. This glue should be extended with all the necessary functionality
that needs and can be tested this way
- Add an EDAC driver to reset bitfix filters in Intel hardware. Bitfix
filters are a hw mechanism for tracking stuck bits in memory and CPU arrays
due to, e.g., silicon aging. Those filters can become clogged by transient
errors accumulating over a long system uptime so this intel-bff (LOL :))
driver glue resets those filters on overflow. Work by Qiuxu Zhuo and Tony
Luck
- Export get_cpu_cacheinfo_id() for use by the new intel-bff driver
- i10nm: Handle the case where hw disables memory controllers which leads to
reporting the wrong memory controller when reporting an error
- The now-usual AI-powered fixes and other misc cleanups and updates all over
the place
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Merge tag 'edac_updates_for_v7.4_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC updates from Borislav Petkov:
- Orphan several EDAC drivers: i82975x, x38, xgene, i3200. Those have
been receiving just drive-by updates and no one really uses them. At
least there are no traces of usage on the mailing lists. So, with the
advent of AI-generated fixes frenzy, and because no one can really
test fixes on those, it is time to sunset them and point them towards
the eternal happy hunting-grounds
- Add a dummy EDAC driver with which the EDAC core glue can be
exercised in a VM for the cases where one does not necessarily have
access to the hardware. This glue should be extended with all the
necessary functionality that needs and can be tested this way
- Add an EDAC driver to reset bitfix filters in Intel hardware. Bitfix
filters are a hw mechanism for tracking stuck bits in memory and CPU
arrays due to, e.g., silicon aging. Those filters can become clogged
by transient errors accumulating over a long system uptime so this
intel-bff (LOL :)) driver glue resets those filters on overflow. Work
by Qiuxu Zhuo and Tony Luck
- Export get_cpu_cacheinfo_id() for use by the new intel-bff driver
- i10nm: Handle the case where hw disables memory controllers which
leads to reporting the wrong memory controller when reporting an
error
- The now-usual AI-powered fixes and other misc cleanups and updates
all over the place
* tag 'edac_updates_for_v7.4_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
MAINTAINERS: Orphan drivers/edac/i3200_edac.c
EDAC/skx_base: Fix ambiguous bitwise and logical operator style
EDAC/i10nm: Fix mdev reference leak in i10nm_get_ddr_munits()
MAINTAINERS: Orphan drivers/edac/xgene_edac.c
MAINTAINERS: Orphan drivers/edac/x38_edac.c
MAINTAINERS: Orphan drivers/edac/i82975x_edac.c
EDAC/dummy: Add a dummy EDAC driver
EDAC/ie31200: Disable PCI device when probing fails
EDAC/{bluefield,loongson}: Use named initializers for acpi_device_id
MAINTAINERS: Update Qiuxu Zhuo's email address
EDAC/intel-bff: Report frequent filter overflows
EDAC/intel-bff: Compute unique ID for overflowed filter
EDAC/intel-bff: Reset bitfix filter when it overflows
EDAC/intel-bff: Add Diamond Rapids support
EDAC/intel-bff: Add stub Intel bitfix filter driver
x86/mce: Add enumeration for Intel bitfix filter reset
cacheinfo: Export get_cpu_cacheinfo_id() for loadable modules
EDAC/i10nm: Fix Granite Rapids ADXL MC mapping
|
||
|
Linus Torvalds
|
7ed37e9d5c |
vfs-7.4-rc1.misc
Please consider pulling these changes from the signed vfs-7.4-rc1.misc tag.
Thanks!
Christian
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Merge tag 'vfs-7.4-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull misc vfs updates from Christian Brauner:
"Fixes:
- aio: a keyed poll completion on an epoll instance could recurse
into the same epoll waitqueue lock when the result eventfd is
watched by that very instance. An unprivileged process could make a
CPU spin on the recursive lock. eventfd-backed poll completions are
always deferred now.
- fsnotify_inoderemove() is only called once the inode is really
dead, no nlink and no aliases, and open_by_handle_at() can't add an
alias to a dead inode anymore. The race could crash fsnotify or
lose inode mark notifications.
- devtmpfs: the conversion of the public instance to ->get_tree()
broke reconfiguring the shared superblock's options on later mounts
which made the boot time defaults permanent. A reconfigure context
is kept in fc->fs_private so the parse ops can forward options to
the underlying filesystem.
- ufs truncated the 64-bit directory size to an unsigned int in
ufs_last_byte(). A crafted image with a 4 GiB directory produced an
out-of-folio read in ufs_find_entry() and, with
CONFIG_UFS_FS_WRITE, a write into an adjacent page.
- devpts rejects max=0 instead of silently lifting the per-instance
pty limit. The value wrapped into ida_alloc_max() and became
unlimited.
- fs_pin publishes pins with the rcu list helpers so the kill paths
reading the lists under rcu see the initialization.
- dentry_kill() reports a Tasks-RCU quiescent state. Its
cond_resched() is the only reschedule point on the dentry teardown
path and cond_resched() isn't a quiescent state for Tasks-RCU, so
Meta kept seeing rcu_tasks stalls in btrfs subvolume deletion.
- writeback sizes foreign flushes by the target wb's dirty pages
instead of the memcg-wide count which over or undersized a single
bdi flush.
- nfsd READ emitted two fsnotify access events on the iterator path
since vfs_iocb_iter_read() already sends one. A READ on a krb5i or
krb5p mount showed up twice in inotify.
- pipe and splice pass a poll key when waking readers and writers so
epoll, poll() and select() waiters only wake for the event they
asked for.
- the iso8859-14 Unicode to charset tables had page01 duplicated as
page1e so 29 code points mapped to the wrong bytes and 22 that
aren't in the charset were accepted.
- orangefs doesn't wait for an unmount service operation that never
returns on system shutdown and uses ssize_t for strscpy() errors.
- __register_chrdev() checks the kobject_set_name() return value.
- selftest fixes: the openat2 tests hardcoded O_LARGEFILE to 0x8000
which is O_NOFOLLOW on powerpc, resolve_test makes /tmp a
mountpoint so RESOLVE_NO_XDEV has a boundary to trip over,
file_stressor moves into its own directory with a 30 minute
timeout, the kernfs listxattr test skips when SELinux exposes
security.selinux, the namespaces active reference tests wait for
the thread via a PIDFD_THREAD pidfd since pthread_join() returns
before exit_nsproxy_namespaces(), the idmapped_tmpfile test chowns
its directory into the mapped range, the clone3 CLONE_CLEAR_SIGHAND
test adds CLONE_VM so it fails for the intended reason, the pidfd
PPID error message prints the values it compares and fscontext_ns
gets a .gitignore.
Cleanups:
- vmcore prints the release of the crashed kernel from the VMCOREINFO
note so a kdump that dies before the dump lands still says which
kernel it was for.
- initramfs allocates hardlink hash entries with the validated cpio
name length instead of PATH_MAX, which put every entry in
kmalloc-8k.
- the unused dax_layout_busy_page() is removed,
dax_layout_busy_page_range() becomes static and dax_folio_init()
drops a redundant list initialization.
- vfs_empty_path() is removed, it has had no callers since
getname_maybe_null().
- comment and documentation fixes in aio, bpf_fs_kfuncs,
fs-writeback, inode, read_write, squashfs and the vfs.rst copy of
struct file_system_type"
* tag 'vfs-7.4-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (38 commits)
selftests/filesystems: Fix idmapped_tmpfile layer dir ownership
selftests/namespaces: Wait for thread exit via pidfd in active-ref tests
writeback: size foreign flushes by target wb dirty pages
initramfs: Reduce hardlink hash allocation sizes
fs: remove unused vfs_empty_path()
dcache: report a Tasks-RCU quiescent state in dentry_kill()
vmcore: report the release of the crashed kernel
splice: pass a poll key when waking pipe readers and writers
pipe: pass a poll key when waking writers after a resize
orangefs: use ssize_t instead of size_t for error codes...
orangefs_super: don't wait on service operation on system shutdown.
docs/vfs: Fix the struct file_system_type copy
nls: fix the Unicode to charset tables of iso8859-14
selftests/filesystems/openat2: make /tmp a mountpoint inside private namespace
selftests/filesystems/openat2: fix O_LARGEFILE definitions for non-arm64 architectures
fs: fix misleading comments in read_write.c
squashfs: fix inode number description in documentation
fs: fix typos in comments
fs/dax: Make dax_layout_busy_page_range() static
fs/dax: Remove unused dax_layout_busy_page()
...
|
||
|
Mark Brown
|
2dee91ee94 |
regmap: Fixes for v7.3
The main thing here is a fix for lockdep warnings with MMIO regmaps that use a raw spinlock and a cache, some other lockdep fixes we'd done for the benefit of the maple tree on sleeping buses meant that we were doing allocations for those MMIO regmaps under a raw spinlock. While fixing that Michael Reeves also noticed that the debugfs files were briefly available without the cache structures backing them. There's also a fix for interrupt freeing on error in regmap-irq which had been hanging around because it's not super urgent. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQReagvpf3TrrA7BoYYv73Ows9A4iQUCatS/PwAKCRAv73Ows9A4 idqeAP4y6bdFUzY0e9Ntiixana3IyzJ2dxzrjHIFHcOZl02UhwD8D2jWwFIw0CIs izZUkBabg5UyIeM1NkzZWtmDhkZTaAk= =AS9J -----END PGP SIGNATURE----- regmap: Merge up fixes The main thing here is a fix for lockdep warnings with MMIO regmaps that use a raw spinlock and a cache, some other lockdep fixes we'd done for the benefit of the maple tree on sleeping buses meant that we were doing allocations for those MMIO regmaps under a raw spinlock. While fixing that Michael Reeves also noticed that the debugfs files were briefly available without the cache structures backing them. There's also a fix for interrupt freeing on error in regmap-irq which had been hanging around because it's not super urgent. |
||
|
Rafael J. Wysocki
|
6c326a54b0 |
Merge branches 'pm-sleep', 'pm-em', 'pm-cpu', 'pm-misc' and 'pm-tools'
Merge updates related to system sleep, an energy model handling update, a generic CPU PM driver update, a clock framework PM update, and a pm-graph utility update for 7.4: - Ignore page-zero RAM in E820 checksum during hibernation on x86 to avoid rejecting images created after kexec() (Matthias Goergens) - Add resume event mapping for PMSG_POWEROFF to the PM core to allow it to carry out device shutdown in the future (Mario Limonciello) - Add DPM watchdog to prepare/late/early/noirq/complete phases of device suspend and resume (Mayank Rungta) - Update swsusp.txt references to swsusp.rst in hibernation documentation (Li Jun) - Fix use-after-free of perf domain in netlink doit handlers for energy models (Fan Wu) - Add synchronize_rcu() back to cpu_pm_unregister_notifier() after it was removed inadvertently in previous development cycles to avoid use-after-free (Bradley Morgan) - Unregister CPU PM notifier outside the timer lock in the timer-ti-dm clocksource driver (Bradley Morgan) - Fix typo "sucessfully" in a comment in pm_clk_add_clk() kerneldoc comment and typo "hierachy" in a comment in pm-graph (Hemanth Selam) * pm-sleep: x86/hibernate: Ignore page-zero RAM in E820 checksum PM: sleep: Add resume event mapping for PMSG_POWEROFF PM: sleep: Add DPM watchdog to prepare/late/early/noirq/complete phases PM: hibernate: docs: update swsusp.txt references to swsusp.rst * pm-em: PM: EM: Fix use-after-free of perf domain in netlink doit handlers * pm-cpu: PM: CPU: Restore synchronize_rcu() to cpu_pm_unregister_notifier() clocksource/drivers/timer-ti-dm: Unregister CPU PM notifier outside of the timer lock * pm-misc: PM: clk: fix typo "sucessfully" in comment * pm-tools: tools: power: pm-graph: fix typo "hierachy" in comment |
||
|
Rafael J. Wysocki
|
dc2021eae5 |
Merge branch 'pm-runtime'
Merge updates related to runtime PM for 7.4:
- Update and improve runtime PM documentation and add a kunit test for
supplier idle/suspend (Brian Norris)
- Add a pm_runtime_dont_use_autosuspend() call to pm_runtime_reinit()
to ensure autosuspend disabling on driver teardown (Joshua Crofts)
* pm-runtime:
PM: runtime: Expand introduction with core concepts and structure
PM: runtime: Clarify driver callback expectations and structure Section 2
PM: runtime: Clarify ->runtime_idle() callback return value handling
PM: runtime: Add "Section" hyperlinks
PM: runtime: Misc improvements to runtime_pm.rst
PM: runtime: More kerneldoc formatting
PM: runtime: Correct pm_runtime_autosuspend_expiration() doc
PM: runtime: call pm_runtime_dont_use_autosuspend() on reinit()
PM: core: Document struct dev_pm_info with kerneldoc
PM: runtime: Pull API docs from kerneldoc
PM: runtime: kerneldoc wording improvements
PM: runtime: Improve set_{status,active,suspended} docs
PM: runtime: kerneldoc fixes
PM: runtime: Add kunit test for supplier idle/suspend
PM: runtime: Only queue an idle check for RPM-linked suppliers
|
||
|
Mario Peter
|
187a62f99d |
driver core: take parent lock in async device attach
For device types with need_parent_lock set (only USB interfaces),
probe() must run with the parent device locked. A synchronous attach
after device_add() gets this from the caller, e.g.
usb_set_configuration() holds the udev lock while adding interfaces.
__device_attach_async_helper() runs the probe from an async worker
instead, where that lock isn't held, and only takes device_lock(dev).
With async probing enabled for the hub driver (e.g. driver_async_probe=*
or driver_async_probe=hub), this races when a multi-TT hub is
configured. For multi-TT hubs, hub_probe() calls
usb_set_interface(hdev, 0, 1) to select the TT-per-port altsetting, and
usb_set_interface() creates the endpoint devices of the interface a
second time:
usb_set_configuration() async worker
[udev locked]
device_add(intf)
queues the probe ----------> __device_attach_async_helper()
[intf locked, udev not locked]
hub_probe()
usb_set_interface(hdev, 0, 1)
create_intf_ep_devs(intf) create_intf_ep_devs(intf)
create_intf_ep_devs() checks and sets intf->ep_devs_created without a
lock of its own. If usb_set_configuration() has created ep_81 but not
yet set the flag, usb_set_interface() skips removing the endpoint
devices of the old altsetting and creates ep_81 again. With a
synchronous probe, hub_probe() runs inside device_add() with the udev
lock held, and usb_set_configuration() then finds ep_devs_created
already set.
Single-TT hubs don't call usb_set_interface() from hub_probe() and
don't show this warning, but their probe runs without the udev lock as
well.
On an i.MX8MM board with an onboard USB2514 hub this hit 11 of 100
boots:
sysfs: cannot create duplicate filename '.../1-1/1-1:1.0/ep_81'
Call trace:
sysfs_warn_dup
usb_create_ep_devs
create_intf_ep_devs
usb_set_interface
hub_probe
usb_probe_interface
really_probe
__device_attach_async_helper
async_run_entry_fn
It also shows on v7.3-rc6 in QEMU, with dummy_hcd and a raw-gadget
program emulating a multi-TT hub: re-authorizing the hub in a loop,
while a SCHED_FIFO task preempts the writing task at random points for
3 ms, hit the warning in 29 of 6000 iterations.
Take the parent lock in __device_attach_async_helper() as well, like
__driver_attach_async_helper() does, and move
__device_driver_lock/unlock() up for that. With this the warning was
gone in 300 boots on the board and in 6000 iterations in QEMU.
Fixes:
|
||
|
Johan Hovold
|
4059f8986c |
driver core: take parent lock on deferred probe
USB interfaces should be probed with the parent USB device lock held,
but this is not honoured when probe is deferred.
Add a new bus_probe_device_deferred() helper to handle deferred probe
where the parent device lock is not held.
Fixes:
|
||
|
Johan Hovold
|
0f554506a3 |
driver core: fix parent lock use-after-free on USB disconnect
USB interfaces should be probed with their parent USB device lock held and the USB bus therefore sets the need_parent_lock bus flag so that driver core takes the parent lock when needed. Driver core is only guaranteed to hold a reference to the parent device during initial probe however and nothing prevents the device and its parent from being deregistered and the parent potentially freed, for example, while iterating over devices in driver_attach() or bus_rescan_devices_helper(). Since commit |
||
|
Rafael J. Wysocki
|
253b25cbb3 |
Merge branches 'acpi-scan', 'acpi-glue', 'acpi-bus' and 'acpi-sysfs'
Merge ACPI support infrastructure changes for 7.4: - Make the core ACPI device enumeration code stop attempting to initialize ACPI power management for devices before they are known to be present and functional (Rafael Wysocki) - Simplify and clean up the core ACPI device enumeration code on top of the previous adjustment and reduce debug noise coming from it (Rafael Wysocki) - Fix locking in the code binding devices to their ACPI companions, prevent it from replacing a valid ACPI companion pointer with NULL incidentally, improve its messaging (including debug noise reduction), and reduce its overhead by making it skip the cases in which no ACPI companion may exist early (Rafael Wysocki) - Reduce runtime memory footprint of struct acpi_device by rearranging fields in it (Andy Shevchenko) - Update the driver core to allow bus types without drivers to be registered as "companion bus types" without driver-related sysfs attributes and register the ACPI bus type as a companion one (Rafael Wysocki) - Use strscpy() instead of strcpy() in the ACPI sysfs interface (Ruslan Vagner) * acpi-scan: ACPI: scan: Combine two conditionals in acpi_bus_attach() ACPI: PM: Move acpi_bus_init_power() declaration to internal header file ACPI: scan: Stop calling acpi_bus_init_power() early ACPI: PM: Drop parent state update from acpi_device_get_power() ACPI: scan: Drop useless and noisy debug statement * acpi-glue: ACPI: glue: Skip devices with no type in acpi_device_notify() ACPI: glue: Fix up and adjust acpi_unbind_one() ACPI: glue: Rearrange acpi_bind_one() to avoid breakage ACPI: glue: Carry out companion lookup under bus_type_sem ACPI: glue: Rework the success message in acpi_device_notify() ACPI: glue: Reduce debug noise from acpi_device_notify() * acpi-bus: driver core/ACPI: Introduce companion_bus_register() ACPI: bus: Reduce runtime memory footprint of struct acpi_device * acpi-sysfs: ACPI: sysfs: use strscpy() instead of strcpy() |
||
|
Peter Zijlstra
|
840e23085b |
Merge branch 'tip/sched/urgent'
Pickup dependencies; notably the RB-tree fix. Signed-off-by: Peter Zijlstra <peterz@infradead.org> |
||
|
Mark Brown
|
d5a821f660
|
regmap: Fix cache lifecycle locking and teardown
Michael Reeves <michael.reeves077@gmail.com> says: Fix an "Invalid wait context" lockdep warning during Apple GPIO probe and correct debugfs ordering during cache teardown. Tested on Apple M3 MacBook Air (T8122): - All 4 GPIO controllers probe successfully with lockdep enabled. - The "Invalid wait context" warning no longer occurs. - The regmap KUnit suite passes and lockdep remains enabled. Link: https://patch.msgid.link/20261006-regcache-lifecycle-submit-v3-0-37bdd82fd47c@gmail.com |
||
|
Michael Reeves
|
abff0a48b1
|
regmap: Drop map lock during cache init and exit
On systems with CONFIG_PROVE_RAW_LOCK_NESTING enabled, Apple GPIO probe
triggers an "Invalid wait context" lockdep warning.
The driver uses a regmap with a raw spinlock and REGCACHE_FLAT. During
regcache_init(), regcache_flat_init() allocates memory while holding the
raw spinlock. The memory allocator can acquire a non-raw spinlock, which
causes an invalid raw-to-non-raw lock nesting error. The abbreviated call
chain is:
apple_gpio_pinctrl_probe
regcache_init
regcache_flat_init
__kmalloc_noprof
__pcs_replace_empty_main
refill_objects
_raw_spin_lock_irqsave
Cache allocation occurs before the regmap is published, cache destruction
occurs after users have stopped accessing it, and regmap_reinit_cache()
requires callers to prevent concurrent access. Remove the outer map lock
from cache initialization and destruction. Keep it for cache population
and normal register access.
The Maple cache still uses its internal spinlock during teardown. That
lock can also be acquired from hard IRQ context during register access.
Add Maple-state irqsave helpers and use them during teardown to preserve
the lock's IRQ-safe lockdep state.
Fixes:
|
||
|
Michael Reeves
|
834035934c
|
regmap: Remove debugfs before cache teardown
regmap_exit() and regmap_reinit_cache() destroy the register cache before removing debugfs. A concurrent debugfs cache operation can therefore access cache state after the backend exit callback starts freeing it. Remove debugfs before cache teardown, and clear the debugfs pointer after removal. During cache reinitialization, recreate debugfs only after the new cache initializes successfully. Signed-off-by: Michael Reeves <michael.reeves077@gmail.com> Reviewed-by: Peng Fan <peng.fan@nxp.com> Link: https://patch.msgid.link/20261006-regcache-lifecycle-submit-v3-1-37bdd82fd47c@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Peng Fan
|
f52260f49b |
regmap: debugfs: Use __free(kfree) for regmap_reg_ranges_read_file
Convert buf and entry in regmap_reg_ranges_read_file() from manual kfree() to __free(kfree) scope-based cleanup. This eliminates the goto error path and the manual kfree(buf) on entry allocation failure, simplifying the function to use straight-line returns. Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://patch.msgid.link/20261008-regmap-debugfs-fix-v1-1-3df2f25c01b6@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Peng Fan
|
a93de1d65c |
regmap: debugfs: Use guard to simplify code
Replace open-coded mutex_lock()/unlock() pairs with guard() and scoped_guard() across the debugfs code. - regmap_debugfs_get_dump_start(): guard(mutex) replaces three unlock sites (kzalloc failure, cache hit, end-of-function). - regmap_next_readable_reg(): early return for the common case and scoped_guard for the cache fallback path. - regmap_reg_ranges_read_file(): scoped_guard wraps the cache iteration loop. - regmap_debugfs_init(): scoped_guard for single list_add. - regmap_debugfs_exit(): flatten if/else into early return and scoped_guard for the early-list cleanup. - regmap_debugfs_initcall(): guard(mutex) held to function end. No functional change. Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://patch.msgid.link/20261002-regmap-lock-2nd-v2-7-e172b0501c52@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Peng Fan
|
d64967dee8 |
regmap: debugfs: Use __free(kfree) in regmap_name_read_file()
Use the __free(kfree) cleanup helper for the temporary buffer allocated by regmap_name_read_file(). Remove the explicit kfree() calls from the error and success paths. No functional change. Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://patch.msgid.link/20261002-regmap-lock-2nd-v2-6-e172b0501c52@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Peng Fan
|
ca685a42b0 |
regmap: fix potential double-free of map->reg_defaults on cache reinit
regcache_exit() frees map->reg_defaults but does not NULL the pointer. If regmap_reinit_cache() is later called with a config that has neither reg_defaults nor num_reg_defaults_raw, regcache_init() skips both allocation branches and leaves the stale pointer in place. Should cache_ops->init then fail, the err_free_reg_defaults error path calls kfree(map->reg_defaults) a second time. NULL the pointer after freeing so the error-path kfree() is a harmless no-op. Assisted-by: LLM Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://patch.msgid.link/20261002-regmap-lock-2nd-v2-5-e172b0501c52@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Peng Fan
|
8a889c83e4 |
regmap: use krealloc_array() in regmap_register_patch()
Replace krealloc() with krealloc_array() in regmap_register_patch() to gain the built-in overflow check on the element-count * element-size multiplication, and switch to the early-return error style to reduce nesting. Assisted-by: LLM Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://patch.msgid.link/20261002-regmap-lock-2nd-v2-4-e172b0501c52@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Peng Fan
|
4e1b5ccf1e |
regcache: simplify control flow and reduce nesting
Move the count guard into regcache_hw_init() so callers don't need to check before calling, and flatten conditional blocks that wrap a single call by using early returns instead. Merge the two separate reg_defaults / num_reg_defaults sanity checks into a single expression, and drop unnecessary else-after-return in regcache_lookup_reg() and regcache_sync_block(). No functional change. Assisted-by: LLM Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://patch.msgid.link/20261002-regmap-lock-2nd-v2-3-e172b0501c52@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Peng Fan
|
7ca8aa98e2 |
regcache: extract __regcache_sync() to deduplicate sync dispatch
regcache_sync() and regcache_sync_region() both open-code the same pattern: check cache_dirty, then dispatch to either cache_ops->sync() or regcache_default_sync(). Extract this into a static __regcache_sync() helper that both callers share. The helper checks cache_dirty and returns 0 early when the cache is clean, dispatches to the backend sync callback when present, and falls back to regcache_default_sync() otherwise. In regcache_sync_region(), the cache_dirty early-exit previously skipped setting map->async. With the helper, map->async is set to true before the call and restored to false unconditionally afterward, so when cache_dirty is false the flag is toggled and immediately restored - functionally equivalent. No functional change. Assisted-by: LLM Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://patch.msgid.link/20261002-regmap-lock-2nd-v2-2-e172b0501c52@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Peng Fan
|
81556a7aec |
regcache: extract locked helpers to replace open-coded lock/unlock pairs
The previous patch ("regcache: use the regmap scoped lock guard")
deliberately left regcache_init() with explicit map->lock()/unlock()
calls because the function has a goto err_* cleanup ladder and mixing
goto with cleanup helpers in the same function is discouraged by
cleanup.h.
Solve this by extracting two static helpers:
regcache_locked_op() - acquires the regmap lock via guard(regmap),
invokes an int-returning cache_ops callback
(init, populate), and returns its result.
Returns 0 when the callback is NULL.
regcache_locked_exit() - acquires the regmap lock via guard(regmap)
and invokes the void-returning exit
callback. Returns immediately when the
callback is NULL.
Because the lock scope is now entirely inside the helper functions,
it never crosses a goto target in the caller, so the cleanup.h
concern does not apply.
Convert all four remaining open-coded lock/unlock sites in
regcache_init() (init, populate, error-path exit) and the
scoped_guard in regcache_exit() to use these helpers.
No functional change.
Assisted-by: LLM
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://patch.msgid.link/20261002-regmap-lock-2nd-v2-1-e172b0501c52@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
|
||
|
Mario Limonciello (AMD)
|
9df3e4316c |
PM: sleep: Add resume event mapping for PMSG_POWEROFF
PM_EVENT_POWEROFF (0x0800) and PMSG_POWEROFF were already defined in include/linux/pm.h, and pm_op(), pm_late_early_op() and pm_noirq_op() already dispatch PM_EVENT_POWEROFF to the same ops->poweroff*() callbacks as PM_EVENT_HIBERNATE. Add the matching entry to resume_event() so that when a poweroff suspend sequence is aborted (for example a device's ->poweroff_noirq() callback fails and the PM core rolls the already-suspended devices back), those devices are resumed with PMSG_RESTORE and their ->restore*() callbacks run. Map it to PMSG_RESTORE, mirroring the existing PM_EVENT_HIBERNATE handling. This is correct because both events suspend via ops->poweroff*(), whose counterpart is ops->restore*(). Mapping to PMSG_ON would be a no-op: it is what the default return already yields, and pm_op()/pm_late_early_op()/pm_noirq_op() have no PM_EVENT_ON case, so they would return NULL and silently skip every resume callback on the abort path. This completes the PMSG_POWEROFF infrastructure needed to support differentiating between hibernation and shutdown sequences 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> [ rjw: Subject tweak ] Link: https://patch.msgid.link/20260926225555.2916525-1-mario.limonciello@amd.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Brian Norris
|
f667dd6713 |
PM: runtime: More kerneldoc formatting
In taking another pass at these docs, I found some more inconsistencies. Signed-off-by: Brian Norris <briannorris@chromium.org> Link: https://patch.msgid.link/20260929194956.v3.2.Ia1cae8a40a24662df11553c225f4438eab65b7db@changeid Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Brian Norris
|
4c91a2f480 |
PM: runtime: Correct pm_runtime_autosuspend_expiration() doc
The "adjusted to be nonzero" comment may be a relic from when this API previously used jiffies, although I'm not quite sure about that either. In any case, it doesn't seem correct today. Signed-off-by: Brian Norris <briannorris@chromium.org> Link: https://patch.msgid.link/20260929194956.v3.1.Ifc8b2d1742729cc82f46220d85c6382fdee1fc8b@changeid Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Mark Brown
|
012c37f094
|
regmap: convert map->lock/unlock users to a scoped guard
Peng Fan (OSS) <peng.fan@oss.nxp.com> says: The regmap lock is taken by calling the lock and unlock callbacks directly at every call site: map->lock(map->lock_arg); ... map->unlock(map->lock_arg); The open-coded pattern forces every error path to unlock by hand, which spreads goto out_unlock chains and duplicated unlock statements throughout regmap.c and regcache.c and makes it easy to leak the lock on a newly added return path. Define a scoped guard for the regmap lock (DEFINE_GUARD) in internal.h and convert the users to it. The lock and unlock callbacks are chosen at init time (mutex, spinlock, raw spinlock, hwspinlock or none) and return void, so an unconditional guard is sufficient. Function-scope critical sections use guard(regmap)(); sites that must run work after the lock is dropped - for example regmap_register_patch() calling regmap_async_complete() and the debugfs cache_only handler calling regcache_sync() (which takes the lock itself) - use scoped_guard(regmap, ...) so the trailing work stays outside the guarded region. regcache_sync() and regcache_sync_region() are deliberately left unconverted: they already use a single goto out unlock path, so a guard would save nothing while forcing either a goto inside a scoped_guard scope or a control-flow rewrite, neither of which is an improvement. This patchset removes many manual unlock statements together with the associated goto out_unlock labels. The series is split to keep the regcache: and regmap: changes on their own commits and to preserve independent revertibility: 1. define the guard and convert regmap.c 2. convert regcache.c (except the sync helpers, see above) 3. convert the regcache rbtree debugfs dump 4. convert the regmap debugfs write handlers No functional change. Tested with the regmap KUnit suite (drivers/base/regmap/regmap-kunit.c) under ARCH=um: 551/551 tests pass, and 551/551 again with lockdep (PROVE_LOCKING, DEBUG_LOCK_ALLOC, DEBUG_ATOMIC_SLEEP) enabled with no splats. Built clean with sparse (C=1) showing no lock-context imbalance warnings. Link: https://patch.msgid.link/20260924-regmap-lock-guard-v3-0-8a6127223c16@nxp.com |
||
|
Peng Fan
|
9999d5a07e
|
regmap: debugfs: use the regmap scoped lock guard
Convert the open-coded map->lock()/map->unlock() users in the debugfs cache_only and cache_bypass write handlers to the regmap scoped guard. regmap_cache_bypass_write_file() uses guard(regmap)() since the locked region runs to the return. regmap_cache_only_write_file() uses scoped_guard(regmap, ...) because the subsequent regcache_sync() must run with the lock released - it takes the regmap lock itself - so it stays outside the guarded scope exactly as before. No functional change. Assisted-by: LLM Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://patch.msgid.link/20260924-regmap-lock-guard-v3-4-8a6127223c16@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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Peng Fan
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555a1bd78b
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regcache: rbtree: use the regmap scoped lock guard
Convert the open-coded map->lock()/map->unlock() pair in rbtree_show() to guard(regmap)(). The locked region spans the whole function body up to the single return, so a function-scope guard drops the manual unlock with no functional change. Assisted-by: LLM Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://patch.msgid.link/20260924-regmap-lock-guard-v3-3-8a6127223c16@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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Peng Fan
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23f1120dcb
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regcache: use the regmap scoped lock guard
Convert the open-coded map->lock()/map->unlock() users in regcache.c to the regmap scoped guard introduced for regmap.c. Use scoped_guard(regmap, ...) in regcache_exit(), where the locked region is a subsection of the function, and guard(regmap)() for the function-scope critical sections. regcache_init() keeps explicit map->lock()/map->unlock() calls: it has a goto err_* cleanup ladder and mixing goto with cleanup helpers in the same function is not allowed by cleanup.h. regcache_sync() and regcache_sync_region() are left as-is: they already use a single goto out unlock path, so converting them would require either mixing a goto with a scoped_guard scope or restructuring their control flow, neither of which is an improvement. No functional change. Assisted-by: LLM Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://patch.msgid.link/20260924-regmap-lock-guard-v3-2-8a6127223c16@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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Peng Fan
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80328b41ea
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regmap: convert lock/unlock to a scoped guard
The regmap lock and unlock callbacks are invoked directly as map->lock(map->lock_arg) / map->unlock(map->lock_arg) at every call site. This open-coded pattern requires manual unlocking on every return path, which spreads goto out_unlock chains and duplicated unlock statements throughout the code and is an easy place to leak the lock on an error path. Define a scoped guard for the regmap lock in internal.h. The lock and unlock callbacks are chosen at init time (mutex, spinlock, raw spinlock, hwspinlock or none) and return void, so an unconditional DEFINE_GUARD() is sufficient. Convert all lock/unlock users in regmap.c to guard(regmap)() for function-scope critical sections and scoped_guard(regmap, ...) where work must run outside the lock (e.g. regmap_register_patch() calling regmap_async_complete()). This drops every manual unlock and the associated goto out_unlock labels with no functional change. Assisted-by: LLM Signed-off-by: Peng Fan <peng.fan@nxp.com> Link: https://patch.msgid.link/20260924-regmap-lock-guard-v3-1-8a6127223c16@nxp.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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Shrikanth Hegde
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6208245165 |
sysfs: Add preferred CPU file
Add a "preferred" file in /sys/devices/system/cpu/ when kernel is
built with CONFIG_PREFERRED_CPU=y.
This would help
- Users to quickly check which CPUs are marked as preferred.
- Userspace daemons such as irqbalance to use this mask to
route irqs into preferred CPUs.
For example:
cat /sys/devices/system/cpu/online
0-719
cat /sys/devices/system/cpu/preferred
0-599 <<< Implies 0-599 are preferred for workloads and 600-719
should be avoided at this moment.
cat /sys/devices/system/cpu/preferred
0-719 <<< All CPUs are usable. There is no preference.
Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260928053728.797539-6-sshegde@linux.ibm.com
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Danilo Krummrich
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a85ce03a58 |
Linux 7.3-rc5
-----BEGIN PGP SIGNATURE----- iQFSBAABCgA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmq5gqUeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiG1m0IAKReEZDW1PRuno8+ eLDLgJ2pYk8CMAnl7UO6OAG9dQWT5vLIJrRerLeoG2ZDP9kr5cJPGytXryxUtH1D 8UfuSRZ+/b/JD0yhHlod0MSvZeVWbRtcL7r03kcea0p4ziNeR+V20oUQqM33ZuCL 7o12W0EYtsQwfSmtMsO+5ayIoOu05FSBb/l2mnWi3TFUUYcLbna4SwBcQuVf/jXQ mCeNqTtFMHsdAFp27AFfu4wV87+y158QFyXxpCeoUk8cGcFDY8zu5R8CqijtHSar x9hpPGSMDVm+BSxfrIsDXWVU/1WskRAPyNw+l14vFR1NwY6uLUBruajPyLEnh3B4 SzHSAxg= =5Bii -----END PGP SIGNATURE----- Merge tag 'v7.3-rc5' into driver-core-next We need the driver-core fixes in here as well to build on top of. Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
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Cezary Rojewski
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b728c07e30 |
driver core: platform: Simplify platform_device_alloc()
There is no need to double check the 'pa' object. Reviewed-by: Dawid Osuchowski <dawid.osuchowski@linux.intel.com> Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com> Reviewed-by: Vishal Moola (Fractile) <vishal.moola@gmail.com> Link: https://patch.msgid.link/20260925093928.3765486-1-cezary.rojewski@intel.com Signed-off-by: Danilo Krummrich <dakr@kernel.org> |
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Joshua Crofts
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d1706f9da9 |
PM: runtime: call pm_runtime_dont_use_autosuspend() on reinit()
Add a pm_runtime_dont_use_autosuspend() call to pm_runtime_reinit() to ensure autosuspend is disabled on driver teardown. Suggested-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Joshua Crofts <joshua.crofts1@gmail.com> Link: https://patch.msgid.link/20260919-move-dont-use-autosuspend-v1-1-f6e2d1315c23@gmail.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Hemanth Selam
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53d39bfd20 |
PM: clk: fix typo "sucessfully" in comment
Correct "sucessfully" to "successfully", reported by scripts/checkpatch.pl using the misspelling list in scripts/spelling.txt. Only touches comments, no code changes. Signed-off-by: Hemanth Selam <hemanth.selam@gmail.com> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> [ rjw: Subject adjustment ] Link: https://patch.msgid.link/20260907064725.10686-2-hemanth.selam@gmail.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Mayank Rungta
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33392343c7 |
PM: sleep: Add DPM watchdog to prepare/late/early/noirq/complete phases
Extend the DPM watchdog to wrap device_prepare, device_suspend_late, device_suspend_noirq, device_resume_noirq, device_resume_early, and device_complete callbacks. If a driver hangs during these transitions, the watchdog will fire and dump a stack trace to help identify the offending driver. To prevent false-positive timeouts, the watchdog is set only after waiting for subordinate (during suspend) and superior (during resume) devices. With this change, DPM watchdog coverage is extended across all phases of system sleep transitions. Signed-off-by: Mayank Rungta <mrungta@google.com> Reviewed-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org> Link: https://patch.msgid.link/20260909224818.2177311-1-mrungta@google.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Rafael J. Wysocki
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57c59c0bda |
driver core/ACPI: Introduce companion_bus_register()
The ACPI bus type does not allow drivers to be matched to devices, so the sysfs attributes related to drivers created for it are useless and their existence is confusing. Moreover, it is better to prevent drivers from being registered and looked up for a bus like that. To allow skipping the creation of those sysfs attributes and preventing driver registration and lookup for the ACPI bus type, introduce a "companion" bus type concept and add a special registration function for registering "companion" bus types, companion_bus_register(). The "drivers" directory under the ACPI bus type is still needed because there are versions of systemd that depend on it [1]. Link: https://lore.kernel.org/linux-acpi/SN6PR02MB41575266A4580339E186E5D9D4812@SN6PR02MB4157.namprd02.prod.outlook.com/ [1] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Tested-by: Michael Kelley <mhklinux@outlook.com> Reviewed-by: Michael Kelley <mhklinux@outlook.com> [ rjw: Add comment regarding drivers_kset creation in bus_register_internal() ] Link: https://patch.msgid.link/12985239.O9o76ZdvQC@rafael.j.wysocki Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |