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v6.19-rc2
930 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
208eed95fc |
soc: driver updates for 6.19
This is the first half of the driver changes:
- A treewide interface change to the "syscore" operations for
power management, as a preparation for future Tegra specific
changes.
- Reset controller updates with added drivers for LAN969x, eic770
and RZ/G3S SoCs.
- Protection of system controller registers on Renesas and Google SoCs,
to prevent trivially triggering a system crash from e.g. debugfs
access.
- soc_device identification updates on Nvidia, Exynos and Mediatek
- debugfs support in the ST STM32 firewall driver
- Minor updates for SoC drivers on AMD/Xilinx, Renesas, Allwinner, TI
- Cleanups for memory controller support on Nvidia and Renesas
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Merge tag 'soc-drivers-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC driver updates from Arnd Bergmann:
"This is the first half of the driver changes:
- A treewide interface change to the "syscore" operations for power
management, as a preparation for future Tegra specific changes
- Reset controller updates with added drivers for LAN969x, eic770 and
RZ/G3S SoCs
- Protection of system controller registers on Renesas and Google
SoCs, to prevent trivially triggering a system crash from e.g.
debugfs access
- soc_device identification updates on Nvidia, Exynos and Mediatek
- debugfs support in the ST STM32 firewall driver
- Minor updates for SoC drivers on AMD/Xilinx, Renesas, Allwinner, TI
- Cleanups for memory controller support on Nvidia and Renesas"
* tag 'soc-drivers-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (114 commits)
memory: tegra186-emc: Fix missing put_bpmp
Documentation: reset: Remove reset_controller_add_lookup()
reset: fix BIT macro reference
reset: rzg2l-usbphy-ctrl: Fix a NULL vs IS_ERR() bug in probe
reset: th1520: Support reset controllers in more subsystems
reset: th1520: Prepare for supporting multiple controllers
dt-bindings: reset: thead,th1520-reset: Add controllers for more subsys
dt-bindings: reset: thead,th1520-reset: Remove non-VO-subsystem resets
reset: remove legacy reset lookup code
clk: davinci: psc: drop unused reset lookup
reset: rzg2l-usbphy-ctrl: Add support for RZ/G3S SoC
reset: rzg2l-usbphy-ctrl: Add support for USB PWRRDY
dt-bindings: reset: renesas,rzg2l-usbphy-ctrl: Document RZ/G3S support
reset: eswin: Add eic7700 reset driver
dt-bindings: reset: eswin: Documentation for eic7700 SoC
reset: sparx5: add LAN969x support
dt-bindings: reset: microchip: Add LAN969x support
soc: rockchip: grf: Add select correct PWM implementation on RK3368
soc/tegra: pmc: Add USB wake events for Tegra234
amba: tegra-ahb: Fix device leak on SMMU enable
...
|
||
|
Linus Torvalds
|
6044a1ee9d |
Devicetree updates for v6.19:
DT bindings:
- Convert lattice,ice40-fpga-mgr, apm,xgene-storm-dma, brcm,sr-thermal,
amazon,al-thermal, brcm,ocotp, mt8173-mdp, Actions Owl SPS, Marvell
AP80x System Controller, Marvell CP110 System Controller,
cznic,moxtet, and apm,xgene-slimpro-mbox to DT schema format
- Add i.MX95 fsl,irqsteer, MT8365 Mali Bifrost GPU, Anvo ANV32C81W
EEPROM, and Microchip pic64gx PLIC
- Add missing LGE, AMD Seattle, and APM X-Gene SoC platform compatibles
- Updates to brcm,bcm2836-l1-intc, brcm,bcm2835-hvs, and bcm2711-hdmi
bindings to fix warnings on BCM2712 platforms
- Drop obsolete db8500-thermal.txt
- Treewide clean-up of extra blank lines and inconsistent quoting
- Ensure all .dtbo targets are applied to a base .dtb
- Speed up dt_binding_check by skipping running validation on empty
examples
DT core:
- Add of_machine_device_match() and of_machine_get_match_data() helpers
and convert users treewide
- Fix bounds checking of address properties in FDT code. Rework the code
to have a single implementation of the bounds checks.
- Rework of_irq_init() to ignore any implicit interrupt-parent (i.e. in
a parent node) on nodes without an interrupt. This matches the spec
description and fixes some RISC-V platforms.
- Avoid a spurious message on overlay removal
- Skip DT kunit tests on RISCV+ACPI
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Merge tag 'devicetree-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree updates from Rob Herring:
"DT bindings:
- Convert lattice,ice40-fpga-mgr, apm,xgene-storm-dma,
brcm,sr-thermal, amazon,al-thermal, brcm,ocotp, mt8173-mdp, Actions
Owl SPS, Marvell AP80x System Controller, Marvell CP110 System
Controller, cznic,moxtet, and apm,xgene-slimpro-mbox to DT schema
format
- Add i.MX95 fsl,irqsteer, MT8365 Mali Bifrost GPU, Anvo ANV32C81W
EEPROM, and Microchip pic64gx PLIC
- Add missing LGE, AMD Seattle, and APM X-Gene SoC platform
compatibles
- Updates to brcm,bcm2836-l1-intc, brcm,bcm2835-hvs, and bcm2711-hdmi
bindings to fix warnings on BCM2712 platforms
- Drop obsolete db8500-thermal.txt
- Treewide clean-up of extra blank lines and inconsistent quoting
- Ensure all .dtbo targets are applied to a base .dtb
- Speed up dt_binding_check by skipping running validation on empty
examples
DT core:
- Add of_machine_device_match() and of_machine_get_match_data()
helpers and convert users treewide
- Fix bounds checking of address properties in FDT code. Rework the
code to have a single implementation of the bounds checks.
- Rework of_irq_init() to ignore any implicit interrupt-parent (i.e.
in a parent node) on nodes without an interrupt. This matches the
spec description and fixes some RISC-V platforms.
- Avoid a spurious message on overlay removal
- Skip DT kunit tests on RISCV+ACPI"
* tag 'devicetree-for-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (55 commits)
dt-bindings: kbuild: Skip validating empty examples
dt-bindings: interrupt-controller: brcm,bcm2836-l1-intc: Drop interrupt-controller requirement
dt-bindings: display: Fix brcm,bcm2835-hvs bindings for BCM2712
dt-bindings: display: bcm2711-hdmi: Add interrupt details for BCM2712
of: Skip devicetree kunit tests when RISCV+ACPI doesn't populate root node
soc: tegra: Simplify with of_machine_device_match()
soc: qcom: ubwc: Simplify with of_machine_get_match_data()
powercap: dtpm: Simplify with of_machine_get_match_data()
platform: surface: Simplify with of_machine_get_match_data()
irqchip/atmel-aic: Simplify with of_machine_get_match_data()
firmware: qcom: scm: Simplify with of_machine_device_match()
cpuidle: big_little: Simplify with of_machine_device_match()
cpufreq: sun50i: Simplify with of_machine_device_match()
cpufreq: mediatek: Simplify with of_machine_get_match_data()
cpufreq: dt-platdev: Simplify with of_machine_get_match_data()
of: Add wrappers to match root node with OF device ID tables
dt-bindings: eeprom: at25: Add Anvo ANV32C81W
of/reserved_mem: Simplify the logic of __reserved_mem_alloc_size()
of/reserved_mem: Simplify the logic of fdt_scan_reserved_mem_reg_nodes()
of/reserved_mem: Simplify the logic of __reserved_mem_reserve_reg()
...
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Linus Torvalds
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52206f82d9 |
pmdomain core:
- Allow power-off for out-of-band wakeup-capable devices - Drop the redundant call to dev_pm_domain_detach() for the amba bus - Extend the genpd governor for CPUs to account for IPIs pmdomain providers: - bcm: Add support for BCM2712 - mediatek: Add support for MFlexGraphics power domains - mediatek: Add support for MT8196 power domains - qcom: Add RPMh power domain support for Kaanapali - rockchip: Add support for RV1126B pmdomain consumers: - usb: dwc3: Enable out of band wakeup for i.MX95 - usb: chipidea: Enable out of band wakeup for i.MX95 -----BEGIN PGP SIGNATURE----- iQJLBAABCgA1FiEEugLDXPmKSktSkQsV/iaEJXNYjCkFAmkt1HYXHHVsZi5oYW5z c29uQGxpbmFyby5vcmcACgkQ/iaEJXNYjCk3PQ//W24ZdZ5cqXJASrw4YihTovbR Pk/cVBacua32r3uBAf+GKdhAXrC7zaPbohp4tou5tpuY6I54NDJ4mpaTLUr+iZ6A aiKGprBrNCNMU7Mu6Af23peQNo0t+0sdsxp3wjZAMcSK0/ioOnc2R+IZhjHI9dPh Us7Ke/Pa1DRu78T0P2quRvIIRPv5iGep2vL8LFkQtPNS4tAU5ZHTWghVip+Q0m7x 660WwZ5a9Bkzii/mqxFlXnXMnFjaJwi7zEPEKEMKd88cTjZXZGqScq8Ojfxto4Jx mdn9kPqwUR2QILTVKyBy2nJTeCB5nLvLhldi5/1nVxhqopN5ll4VwFx8CVsEPVTQ l76IUMzdAmztnVqs1p7qZ8dyFKdYztNRSESapumpu10/DIIOgWW4eLNk5Sk+7d0K 1fZDL/hWV2j4gnY0wSjGht2JQ2jhDBsgkxInxvQY2a8Ik91gwyUsD7r3mCq/YwaA 97GJHk9YO75jolFPy6PniXttzVuoJXPEcvgpBR3br1iFRQhSoGIEfFcDnZEaH9Sw m7nSc1Q99a6rsmq+WavB5JVPZBr2UkBhE6x+IU+MEBPwykjNj/1cZ7x4rtqzX666 eOn1FBDQ63CLEQl3hAPp1pxy3YB0nHcxKR9CPAZjECwZTfsYgJCrRNHyZb+yhPsU qKKXXMaOyyowoLraGbQ= =Fkue -----END PGP SIGNATURE----- Merge tag 'pmdomain-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm Pull pmdomain updates from Ulf Hansson: "pmdomain core: - Allow power-off for out-of-band wakeup-capable devices - Drop the redundant call to dev_pm_domain_detach() for the amba bus - Extend the genpd governor for CPUs to account for IPIs pmdomain providers: - bcm: Add support for BCM2712 - mediatek: Add support for MFlexGraphics power domains - mediatek: Add support for MT8196 power domains - qcom: Add RPMh power domain support for Kaanapali - rockchip: Add support for RV1126B pmdomain consumers: - usb: dwc3: Enable out of band wakeup for i.MX95 - usb: chipidea: Enable out of band wakeup for i.MX95" * tag 'pmdomain-v6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm: (26 commits) pmdomain: Extend the genpd governor for CPUs to account for IPIs smp: Introduce a helper function to check for pending IPIs pmdomain: mediatek: convert from clk round_rate() to determine_rate() amba: bus: Drop dev_pm_domain_detach() call pmdomain: bcm: bcm2835-power: Prepare to support BCM2712 pmdomain: mediatek: mtk-mfg: select MAILBOX in Kconfig pmdomain: mediatek: Add support for MFlexGraphics pmdomain: mediatek: Fix build-errors cpuidle: psci: Replace deprecated strcpy in psci_idle_init_cpu pmdomain: rockchip: Add support for RV1126B pmdomain: mediatek: Add support for MT8196 HFRPSYS power domains pmdomain: mediatek: Add support for MT8196 SCPSYS power domains pmdomain: mediatek: Add support for secure HWCCF infra power on pmdomain: mediatek: Add support for Hardware Voter power domains pmdomain: qcom: rpmhpd: Add RPMh power domain support for Kaanapali usb: dwc3: imx8mp: Set out of band wakeup for i.MX95 usb: chipidea: ci_hdrc_imx: Set out of band wakeup for i.MX95 usb: chipidea: core: detach power domain for ci_hdrc platform device pmdomain: core: Allow power-off for out-of-band wakeup-capable devices PM: wakeup: Add out-of-band system wakeup support for devices ... |
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Rafael J. Wysocki
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7cede21e9f |
Merge branches 'pm-qos' and 'pm-tools'
Merge PM QoS updates and a cpupower utility update for 6.19-rc1: - Introduce and document a QoS limit on CPU exit latency during wakeup from suspend-to-idle (Ulf Hansson) - Add support for building libcpupower statically (Zuo An) * pm-qos: Documentation: power/cpuidle: Document the CPU system wakeup latency QoS cpuidle: Respect the CPU system wakeup QoS limit for cpuidle sched: idle: Respect the CPU system wakeup QoS limit for s2idle pmdomain: Respect the CPU system wakeup QoS limit for cpuidle pmdomain: Respect the CPU system wakeup QoS limit for s2idle PM: QoS: Introduce a CPU system wakeup QoS limit * pm-tools: tools/power/cpupower: Support building libcpupower statically |
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Rafael J. Wysocki
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bf7ae1773e |
Merge branches 'pm-cpuidle' and 'pm-powercap'
Merge cpuidle and power capping updates for 6.19-rc1: - Use residency threshold in polling state override decisions in the menu cpuidle governor (Aboorva Devarajan) - Add sanity check for exit latency and target residency in the cpufreq core (Rafael Wysocki) - Use this_cpu_ptr() where possible in the teo governor (Christian Loehle) - Rework the handling of tick wakeups in the teo cpuidle governor to increase the likelihood of stopping the scheduler tick in the cases when tick wakeups can be counted as non-timer ones (Rafael Wysocki) - Fix a reverse condition in the teo cpuidle governor and drop a misguided target residency check from it (Rafael Wysocki) - Clean up muliple minor defects in the teo cpuidle governor (Rafael Wysocki) - Update header inclusion to make it follow the Include What You Use principle (Andy Shevchenko) - Enable MSR-based RAPL PMU support in the intel_rapl power capping driver and arrange for using it on the Panther Lake and Wildcat Lake processors (Kuppuswamy Sathyanarayanan) - Add support for Nova Lake and Wildcat Lake processors to the intel_rapl power capping driver (Kaushlendra Kumar, Srinivas Pandruvada) * pm-cpuidle: cpuidle: Warn instead of bailing out if target residency check fails cpuidle: Update header inclusion cpuidle: governors: teo: Add missing space to the description cpuidle: governors: teo: Simplify intercepts-based state lookup cpuidle: governors: teo: Fix tick_intercepts handling in teo_update() cpuidle: governors: teo: Rework the handling of tick wakeups cpuidle: governors: teo: Decay metrics below DECAY_SHIFT threshold cpuidle: governors: teo: Use s64 consistently in teo_update() cpuidle: governors: teo: Drop redundant function parameter cpuidle: governors: teo: Drop misguided target residency check cpuidle: teo: Use this_cpu_ptr() where possible cpuidle: Add sanity check for exit latency and target residency cpuidle: menu: Use residency threshold in polling state override decisions * pm-powercap: powercap: intel_rapl: Enable MSR-based RAPL PMU support powercap: intel_rapl: Prepare read_raw() interface for atomic-context callers powercap: intel_rapl: Add support for Nova Lake processors powercap: intel_rapl: Add support for Wildcat Lake platform |
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Krzysztof Kozlowski
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4b94d21fac |
cpuidle: big_little: Simplify with of_machine_device_match()
Replace open-coded getting root OF node and matching against it with new of_machine_device_match() helper. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Link: https://patch.msgid.link/20251112-b4-of-match-matchine-data-v2-5-d46b72003fd6@linaro.org Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
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Rafael J. Wysocki
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4bf944f3fc |
cpuidle: Warn instead of bailing out if target residency check fails
It turns out that the change in commit |
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Andy Shevchenko
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6d96ceff9a |
cpuidle: Update header inclusion
While cleaning up some headers, I got a build error on this file: drivers/cpuidle/poll_state.c:52:2: error: call to undeclared library function 'snprintf' with type 'int (char *restrict, unsigned long, const char *restrict, ...)'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] Update header inclusions to follow IWYU (Include What You Use) principle. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20251124205752.1328701-1-andriy.shevchenko@linux.intel.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Ulf Hansson
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2b8d594742 |
cpuidle: Respect the CPU system wakeup QoS limit for cpuidle
The CPU system wakeup QoS limit must be respected for the regular cpuidle state selection. Therefore, let's extend the common governor helper cpuidle_governor_latency_req(), to take the constraint into account. Reviewed-by: Dhruva Gole <d-gole@ti.com> Reviewed-by: Kevin Hilman (TI) <khilman@baylibre.com> Tested-by: Kevin Hilman (TI) <khilman@baylibre.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://patch.msgid.link/20251125112650.329269-6-ulf.hansson@linaro.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Ulf Hansson
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99b42445f4 |
sched: idle: Respect the CPU system wakeup QoS limit for s2idle
A CPU system wakeup QoS limit may have been requested by user space. To avoid breaking this constraint when entering a low power state during s2idle, let's start to take into account the QoS limit. Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Dhruva Gole <d-gole@ti.com> Reviewed-by: Kevin Hilman (TI) <khilman@baylibre.com> Tested-by: Kevin Hilman (TI) <khilman@baylibre.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://patch.msgid.link/20251125112650.329269-5-ulf.hansson@linaro.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Rafael J. Wysocki
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15bfdadd61 |
cpuidle: governors: teo: Add missing space to the description
There is a missing space in the governor description comment, so add it. No functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/5059034.31r3eYUQgx@rafael.j.wysocki |
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Rafael J. Wysocki
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d834e68a0e |
cpuidle: governors: teo: Simplify intercepts-based state lookup
Simplify the loop looking up a candidate idle state in the case when an intercept is likely to occur by adding a search for the state index limit if the tick is stopped before it. First, call tick_nohz_tick_stopped() just once and if it returns true, look for the shallowest state index below the current candidate one with target residency at least equal to the tick period length. Next, simply look for a state that is not shallower than the one found in the previous step and satisfies the intercepts majority condition (if there are no such states, the shallowest state that is not shallower than the one found in the previous step becomes the new candidate). Since teo_state_ok() has no callers any more after the above changes, drop it. No intentional functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Christian Loehle <christian.loehle@arm.com> [ rjw: Changelog clarification and code comment edit ] Link: https://patch.msgid.link/2418792.ElGaqSPkdT@rafael.j.wysocki Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Rafael J. Wysocki
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50db438231 |
cpuidle: governors: teo: Fix tick_intercepts handling in teo_update()
The condition deciding whether or not to increase cpu_data->tick_intercepts
in teo_update() is reverse, so fix it.
Fixes:
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Rafael J. Wysocki
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083654ded5 |
cpuidle: governors: teo: Rework the handling of tick wakeups
If the wakeup pattern is clearly dominated by tick wakeups, count those wakeups as hits on the deepest available idle state to increase the likelihood of stopping the tick, especially on systems where there are only 2 usable idle states and the tick can only be stopped when the deeper state is selected. This change is expected to reduce power on some systems where state 0 is selected relatively often even though they are almost idle. Without it, the governor may end up selecting the shallowest idle state all the time even if the system is almost completely idle due all tick wakeups being counted as hits on that state and preventing the tick from being stopped at all. Fixes: |
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Thorsten Blum
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e938ef83a0 |
cpuidle: psci: Replace deprecated strcpy in psci_idle_init_cpu
strcpy() is deprecated; use strscpy() instead. Link: https://github.com/KSPP/linux/issues/88 Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> |
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Rafael J. Wysocki
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b54df61c74 |
cpuidle: governors: teo: Decay metrics below DECAY_SHIFT threshold
If a given governor metric falls below a certain value (8 for DECAY_SHIFT equal to 3), it will not decay any more due to the simplistic decay implementation. This may in some cases lead to subtle inconsistencies in the governor behavior, so change the decay implementation to take it into account and set the metric at hand to 0 in that case. Suggested-by: Christian Loehle <christian.loehle@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Christian Loehle <christian.loehle@arm.com> Tested-by: Christian Loehle <christian.loehle@arm.com> Link: https://patch.msgid.link/2819353.mvXUDI8C0e@rafael.j.wysocki |
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Rafael J. Wysocki
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8f3f01082d |
cpuidle: governors: teo: Use s64 consistently in teo_update()
Two local variables in teo_update() are defined as u64, but their values are then compared with s64 values, so it is more consistent to use s64 as their data type. No intentional functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Christian Loehle <christian.loehle@arm.com> Tested-by: Christian Loehle <christian.loehle@arm.com> Link: https://patch.msgid.link/3026616.e9J7NaK4W3@rafael.j.wysocki |
||
|
Rafael J. Wysocki
|
17673f64a0 |
cpuidle: governors: teo: Drop redundant function parameter
The last no_poll parameter of teo_find_shallower_state() is always false, so drop it. No intentional functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Christian Loehle <christian.loehle@arm.com> Tested-by: Christian Loehle <christian.loehle@arm.com> Link: https://patch.msgid.link/2253109.irdbgypaU6@rafael.j.wysocki |
||
|
Rafael J. Wysocki
|
a03b201180 |
cpuidle: governors: teo: Drop misguided target residency check
When the target residency of the current candidate idle state is
greater than the expected time till the closest timer (the sleep
length), it does not matter whether or not the tick has already been
stopped or if it is going to be stopped. The closest timer will
trigger anyway at its due time, so if an idle state with target
residency above the sleep length is selected, energy will be wasted
and there may be excess latency.
Of course, if the closest timer were canceled before it could trigger,
a deeper idle state would be more suitable, but this is not expected
to happen (generally speaking, hrtimers are not expected to be
canceled as a rule).
Accordingly, the teo_state_ok() check done in that case causes energy to
be wasted more often than it allows any energy to be saved (if it allows
any energy to be saved at all), so drop it and let the governor use the
teo_find_shallower_state() return value as the new candidate idle state
index.
Fixes:
|
||
|
Thierry Reding
|
a97fbc3ee3 |
syscore: Pass context data to callbacks
Several drivers can benefit from registering per-instance data along with the syscore operations. To achieve this, move the modifiable fields out of the syscore_ops structure and into a separate struct syscore that can be registered with the framework. Add a void * driver data field for drivers to store contextual data that will be passed to the syscore ops. Acked-by: Rafael J. Wysocki (Intel) <rafael@kernel.org> Signed-off-by: Thierry Reding <treding@nvidia.com> |
||
|
Christian Loehle
|
0796ddf4a7 |
cpuidle: teo: Use this_cpu_ptr() where possible
The cpuidle governor callbacks for update, select and reflect
are always running on the actual idle entering/exiting CPU, so
use the more optimized this_cpu_ptr() to access the internal teo
data.
This brings down the latency-critical teo_reflect() from
static void teo_reflect(struct cpuidle_device *dev, int state)
{
ffffffc080ffcff0: hint #0x19
ffffffc080ffcff4: stp x29, x30, [sp, #-48]!
struct teo_cpu *cpu_data = per_cpu_ptr(&teo_cpus, dev->cpu);
ffffffc080ffcff8: adrp x2, ffffffc0848c0000 <gicv5_global_data+0x28>
{
ffffffc080ffcffc: add x29, sp, #0x0
ffffffc080ffd000: stp x19, x20, [sp, #16]
ffffffc080ffd004: orr x20, xzr, x0
struct teo_cpu *cpu_data = per_cpu_ptr(&teo_cpus, dev->cpu);
ffffffc080ffd008: add x0, x2, #0xc20
{
ffffffc080ffd00c: stp x21, x22, [sp, #32]
struct teo_cpu *cpu_data = per_cpu_ptr(&teo_cpus, dev->cpu);
ffffffc080ffd010: adrp x19, ffffffc083eb5000 <cpu_devices+0x78>
ffffffc080ffd014: add x19, x19, #0xbb0
ffffffc080ffd018: ldr w3, [x20, #4]
dev->last_state_idx = state;
to
static void teo_reflect(struct cpuidle_device *dev, int state)
{
ffffffc080ffd034: hint #0x19
ffffffc080ffd038: stp x29, x30, [sp, #-48]!
ffffffc080ffd03c: add x29, sp, #0x0
ffffffc080ffd040: stp x19, x20, [sp, #16]
ffffffc080ffd044: orr x20, xzr, x0
struct teo_cpu *cpu_data = this_cpu_ptr(&teo_cpus);
ffffffc080ffd048: adrp x19, ffffffc083eb5000 <cpu_devices+0x78>
{
ffffffc080ffd04c: stp x21, x22, [sp, #32]
struct teo_cpu *cpu_data = this_cpu_ptr(&teo_cpus);
ffffffc080ffd050: add x19, x19, #0xbb0
dev->last_state_idx = state;
This saves us:
adrp x2, ffffffc0848c0000 <gicv5_global_data+0x28>
add x0, x2, #0xc20
ldr w3, [x20, #4]
Signed-off-by: Christian Loehle <christian.loehle@arm.com>
[ rjw: Subject tweak ]
Link: https://patch.msgid.link/20251110120819.714560-1-christian.loehle@arm.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
||
|
Rafael J. Wysocki
|
76934e495c |
cpuidle: Add sanity check for exit latency and target residency
Make __cpuidle_driver_init() fail if the exit latency of one of the driver's idle states is less than its target residency which would break cpuidle assumptions. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Reviewed-by: Christian Loehle <christian.loehle@arm.com> [ rjw: Changelog fix ] Link: https://patch.msgid.link/12779486.O9o76ZdvQC@rafael.j.wysocki Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Linus Torvalds
|
225a97d6d4 |
RISC-V updates for v6.18-rc5
Some RISC-V updates for v6.18-rc5, including: - A fix to disable KASAN checks while walking a non-current task's stackframe (following x86) - A fix for a kvrealloc()-related memory leak in module_frob_arch_sections() - Two replacements of strcpy() with strscpy() - A change to use the RISC-V .insn assembler directive when possible to assemble instructions from hex opcodes - Some low-impact fixes in the ptdump code and kprobes test code -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEElRDoIDdEz9/svf2Kx4+xDQu9KksFAmkNH1oACgkQx4+xDQu9 Kks0PxAAhPpdyiNaACMUvyXqUp5H6ARZlvrIQuDzJDID38ESlLZDYi51o67XH/nS 4zXUaEGv6Y97Zh7X/H1l635rq+gPlWq1vNo68B5XujHQpib8FGj5Zoll2uYp8fEJ 67t/2TnHRlCVD8FiIxmRn0Z/QtNoSTSJkkF9bsE+KtwHG1tIplBrL9DaqQ9vSltC 5O4E304KwGpeoHLSOrAC2gryQcxNR+LvZMelz/Nin/nXRG2vWjk+zt60whJGywP+ JbBuIu10F1AkHVnznpECDnACasbELyM9195mgazWBJbB9PjoA+NzRxRDy9nWnRRe U2LKfbVLCvbud7a4ehwWg7zE69D+ofhF6e8e5RXUaGwkw1Q/XVMTv9YeZYnRZpIn PiJV4/eDsgTwnHMLeJs7b6/gSthLBxCIpRZ3JFmo+dqHT/Zzx72qHKqPyaq7mapn HqWzwSU35kuLwJqrmTPWYWhRvnmp57PMP1cKxqIEKJLPoOeTtBOuvW+DJMs2+m2J 6Ubm3LRzrrRllHWD1jCGurRJ3HsBBOfsK/COIeiyc2GgHU+8Io9dJ2y+M9eOx62L dJB7KSVd0a9K+mrCYIxRWD+OXBpCPGzT7NjI4btzOVR7astHNUdwrQ3cOcRp6yu2 +wSKTFp7M/pRPZpBfWT8cgYO3jc0oeHgy6LU8zbuu99mVeQSEcs= =BWQb -----END PGP SIGNATURE----- Merge tag 'riscv-for-linus-6.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V fixes from Paul Walmsley: - A fix to disable KASAN checks while walking a non-current task's stackframe (following x86) - A fix for a kvrealloc()-related memory leak in module_frob_arch_sections() - Two replacements of strcpy() with strscpy() - A change to use the RISC-V .insn assembler directive when possible to assemble instructions from hex opcodes - Some low-impact fixes in the ptdump code and kprobes test code * tag 'riscv-for-linus-6.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: cpuidle: riscv-sbi: Replace deprecated strcpy in sbi_cpuidle_init_cpu riscv: KGDB: Replace deprecated strcpy in kgdb_arch_handle_qxfer_pkt riscv: asm: use .insn for making custom instructions riscv: tests: Make RISCV_KPROBES_KUNIT tristate riscv: tests: Rename kprobes_test_riscv to kprobes_riscv riscv: Fix memory leak in module_frob_arch_sections() riscv: ptdump: use seq_puts() in pt_dump_seq_puts() macro riscv: stacktrace: Disable KASAN checks for non-current tasks |
||
|
Thorsten Blum
|
2e44856783 |
cpuidle: riscv-sbi: Replace deprecated strcpy in sbi_cpuidle_init_cpu
strcpy() is deprecated; use strscpy() instead. Link: https://github.com/KSPP/linux/issues/88 Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev> Link: https://lore.kernel.org/r/20251021135155.1409-2-thorsten.blum@linux.dev Signed-off-by: Paul Walmsley <pjw@kernel.org> |
||
|
Aboorva Devarajan
|
07d8157012 |
cpuidle: menu: Use residency threshold in polling state override decisions
On virtualized PowerPC (pseries) systems, where only one polling state (Snooze) and one deep state (CEDE) are available, selecting CEDE when the predicted idle duration is less than the target residency of CEDE state can hurt performance. In such cases, the entry/exit overhead of CEDE outweighs the power savings, leading to unnecessary state transitions and higher latency. Menu governor currently contains a special-case rule that prioritizes the first non-polling state over polling, even when its target residency is much longer than the predicted idle duration. On PowerPC/pseries, where the gap between the polling state (Snooze) and the first non-polling state (CEDE) is large, this behavior causes performance regressions. Refine that special case by adding an extra requirement: the first non-polling state can only be chosen if its target residency is below the defined RESIDENCY_THRESHOLD_NS. If this condition is not satisfied, polling is allowed instead, avoiding suboptimal non-polling state entries. This change is limited to the single special-case rule for the first non-polling state. The general non-polling state selection logic in the menu governor remains unchanged. Performance improvement observed with pgbench on PowerPC (pseries) system: +---------------------------+------------+------------+------------+ | Metric | Baseline | Patched | Change (%) | +---------------------------+------------+------------+------------+ | Transactions/sec (TPS) | 495,210 | 536,982 | +8.45% | | Avg latency (ms) | 0.163 | 0.150 | -7.98% | +---------------------------+------------+------------+------------+ CPUIdle state usage: +--------------+--------------+-------------+ | Metric | Baseline | Patched | +--------------+--------------+-------------+ | Total usage | 12,735,820 | 13,918,442 | | Above usage | 11,401,520 | 1,598,210 | | Below usage | 20,145 | 702,395 | +--------------+--------------+-------------+ Above/Total and Below/Total usage percentages: +------------------------+-----------+---------+ | Metric | Baseline | Patched | +------------------------+-----------+---------+ | Above % (Above/Total) | 89.56% | 11.49% | | Below % (Below/Total) | 0.16% | 5.05% | | Total cpuidle miss (%) | 89.72% | 16.54% | +------------------------+-----------+---------+ The results indicate that restricting CEDE selection to cases where its residency matches the predicted idle time reduces mispredictions, lowers unnecessary state transitions, and improves overall throughput. Reviewed-by: Christian Loehle <christian.loehle@arm.com> Signed-off-by: Aboorva Devarajan <aboorvad@linux.ibm.com> [ rjw: Changelog edits, rebase ] Link: https://patch.msgid.link/20251006013954.17972-1-aboorvad@linux.ibm.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Rafael J. Wysocki
|
db86f55bf8 |
cpuidle: governors: menu: Select polling state in some more cases
A throughput regression of 11% introduced by commit |
||
|
Rafael J. Wysocki
|
10fad40122 |
Revert "cpuidle: menu: Avoid discarding useful information"
It is reported that commit |
||
|
Rafael J. Wysocki
|
7b1b796117 |
cpuidle: Fail cpuidle device registration if there is one already
Refuse to register a cpuidle device if the given CPU has a cpuidle device already and print a message regarding it. Without this, an attempt to register a new cpuidle device without unregistering the existing one leads to the removal of the existing cpuidle device without removing its sysfs interface. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Vivek Yadav
|
8dba0fd9ce |
cpuidle: sysfs: Use sysfs_emit()/sysfs_emit_at() instead of sprintf()/scnprintf()
The ->show() callbacks in sysfs should use sysfs_emit() or sysfs_emit_at() when formatting values for user space. These helpers are the recommended way to ensure correct buffer handling and consistency across the kernel. See Documentation/filesystems/sysfs.rst for details. No functional change intended. Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Vivek Yadav <vivekyadav1207731111@gmail.com> Link: https://patch.msgid.link/20250919165657.233349-1-vivekyadav1207731111@gmail.com [ rjw: Minor subject edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Johan Hovold
|
a2d100c47f |
cpuidle: qcom-spm: drop unnecessary initialisations
Drop the unnecessary initialisations of the platform device and driver data pointers which are assigned on first use when registering the cpuidle device during probe. Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Johan Hovold
|
cdc06f9126 |
cpuidle: qcom-spm: fix device and OF node leaks at probe
Make sure to drop the reference to the saw device taken by
of_find_device_by_node() after retrieving its driver data during
probe().
Also drop the reference to the CPU node sooner to avoid leaking it in
case there is no saw node or device.
Fixes:
|
||
|
Rafael J. Wysocki
|
17224c1d25 |
cpuidle: governors: menu: Rearrange main loop in menu_select()
Reduce the indentation level in the main loop of menu_select() by rearranging some checks and assignments in it. No intentional functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Christian Loehle <christian.loehle@arm.com> Link: https://patch.msgid.link/2389215.ElGaqSPkdT@rafael.j.wysocki |
||
|
Rafael J. Wysocki
|
779b1a1cb1 |
cpuidle: governors: menu: Avoid selecting states with too much latency
Occasionally, the exit latency of the idle state selected by the menu governor may exceed the PM QoS CPU wakeup latency limit. Namely, if the scheduler tick has been stopped already and predicted_ns is greater than the tick period length, the governor may return an idle state whose exit latency exceeds latency_req because that decision is made before checking the current idle state's exit latency. For instance, say that there are 3 idle states, 0, 1, and 2. For idle states 0 and 1, the exit latency is equal to the target residency and the values are 0 and 5 us, respectively. State 2 is deeper and has the exit latency and target residency of 200 us and 2 ms (which is greater than the tick period length), respectively. Say that predicted_ns is equal to TICK_NSEC and the PM QoS latency limit is 20 us. After the first two iterations of the main loop in menu_select(), idx becomes 1 and in the third iteration of it the target residency of the current state (state 2) is greater than predicted_ns. State 2 is not a polling one and predicted_ns is not less than TICK_NSEC, so the check on whether or not the tick has been stopped is done. Say that the tick has been stopped already and there are no imminent timers (that is, delta_tick is greater than the target residency of state 2). In that case, idx becomes 2 and it is returned immediately, but the exit latency of state 2 exceeds the latency limit. Address this issue by modifying the code to compare the exit latency of the current idle state (idle state i) with the latency limit before comparing its target residency with predicted_ns, which allows one more exit_latency_ns check that becomes redundant to be dropped. However, after the above change, latency_req cannot take the predicted_ns value any more, which takes place after commit |
||
|
Rafael J. Wysocki
|
fa3fa55de0 |
cpuidle: governors: menu: Avoid using invalid recent intervals data
Marc has reported that commit |
||
|
Linus Torvalds
|
fc8f5028eb |
pmdomain core:
- Leave powered-on genpds on until ->sync_state() or late_initcall_sync
- Export a common ->sync_state() helper for genpd providers
- Add generic ->sync_state() support
- Add a bus/driver for genpd provider-devices
- Introduce dev_pm_genpd_is_on() for consumers
pmdomain providers:
- cpuidle-psci: Drop redundant ->sync_state() support
- cpuidle-riscv-sbi: Drop redundant ->sync_state() support
- imx: Set ISI panic write for imx8m-blk-ctrl
- qcom: Add support for Glymur and Milos RPMh power-domains
- qcom: Use of_genpd_sync_state() for power-domains
- rockchip: Add support for the RK3528 variant
- samsung: Fix splash-screen handover by enforcing a ->sync_state()
- sunxi: Add support for Allwinner A523's PCK600 power-controller
- tegra: Opt-out from genpd's common ->sync_state() support for pmc
- thead: Instantiate a GPU power sequencer via the auxiliary bus
- renesas: Move init to postcore_initcalls
- xilinx: Move ->sync_state() support to firmware driver
- xilinx: Use of_genpd_sync_state() for power-domains
pmdomain consumers:
- remoteproc: imx_rproc: Fixup the detect/attach procedure for pre-booted cores
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Merge tag 'pmdomain-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm
Pull pmdomain updates from Ulf Hansson:
"pmdomain core:
- Leave powered-on genpds on until ->sync_state() or late_initcall_sync
- Export a common ->sync_state() helper for genpd providers
- Add generic ->sync_state() support
- Add a bus/driver for genpd provider-devices
- Introduce dev_pm_genpd_is_on() for consumers
pmdomain providers:
- cpuidle-psci: Drop redundant ->sync_state() support
- cpuidle-riscv-sbi: Drop redundant ->sync_state() support
- imx: Set ISI panic write for imx8m-blk-ctrl
- qcom: Add support for Glymur and Milos RPMh power-domains
- qcom: Use of_genpd_sync_state() for power-domains
- rockchip: Add support for the RK3528 variant
- samsung: Fix splash-screen handover by enforcing a ->sync_state()
- sunxi: Add support for Allwinner A523's PCK600 power-controller
- tegra: Opt-out from genpd's common ->sync_state() support for pmc
- thead: Instantiate a GPU power sequencer via the auxiliary bus
- renesas: Move init to postcore_initcalls
- xilinx: Move ->sync_state() support to firmware driver
- xilinx: Use of_genpd_sync_state() for power-domains
pmdomain consumers:
- remoteproc: imx_rproc: Fixup the detect/attach procedure for
pre-booted cores"
* tag 'pmdomain-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm: (44 commits)
pmdomain: qcom: rpmhpd: Add Glymur RPMh Power Domains
dt-bindings: power: rpmpd: Add Glymur power domains
remoteproc: imx_rproc: detect and attach to pre-booted remote cores
remoteproc: imx_rproc: skip clock enable when M-core is managed by the SCU
pmdomain: core: introduce dev_pm_genpd_is_on()
pmdomain: ti: Select PM_GENERIC_DOMAINS
pmdomain: sunxi: sun20i-ppu: change to tristate and enable for ARCH_SUNXI
pmdomain: sunxi: add driver for Allwinner A523's PCK-600 power controller
pmdomain: sunxi: sun20i-ppu: add A523 support
pmdomain: samsung: Fix splash-screen handover by enforcing a sync_state
cpuidle: riscv-sbi: Drop redundant sync_state support
cpuidle: psci: Drop redundant sync_state support
pmdomain: core: Leave powered-on genpds on until sync_state
pmdomain: core: Leave powered-on genpds on until late_initcall_sync
pmdomain: core: Default to use of_genpd_sync_state() for genpd providers
driver core: Add dev_set_drv_sync_state()
pmdomain: core: Add common ->sync_state() support for genpd providers
driver core: Export get_dev_from_fwnode()
firmware: xilinx: Use of_genpd_sync_state()
firmware: xilinx: Don't share zynqmp_pm_init_finalize()
...
|
||
|
Linus Torvalds
|
53edfecef6 |
Power management updates for 6.17-rc1
- Fix two initialization ordering issues in the cpufreq core and a
governor initialization error path in it, and clean it up (Lifeng
Zheng)
- Add Granite Rapids support in no-HWP mode to the intel_pstate cpufreq
driver (Li RongQing)
- Make intel_pstate always use HWP_DESIRED_PERF when operating in the
passive mode (Rafael Wysocki)
- Allow building the tegra124 cpufreq driver as a module (Aaron Kling)
- Do minor cleanups for Rust cpufreq and cpumask APIs and fix MAINTAINERS
entry for cpu.rs (Abhinav Ananthu, Ritvik Gupta, Lukas Bulwahn)
- Clean up assorted cpufreq drivers (Arnd Bergmann, Dan Carpenter,
Krzysztof Kozlowski, Sven Peter, Svyatoslav Ryhel, Lifeng Zheng)
- Add the NEED_UPDATE_LIMITS flag to the CPPC cpufreq driver (Prashant
Malani)
- Fix minimum performance state label error in the amd-pstate driver
documentation (Shouye Liu)
- Add the CPUFREQ_GOV_STRICT_TARGET flag to the userspace cpufreq
governor and explain HW coordination influence on it in the
documentation (Shashank Balaji)
- Fix opencoded for_each_cpu() in idle_state_valid() in the DT cpuidle
driver (Yury Norov)
- Remove info about non-existing QoS interfaces from the PM QoS
documentation (Ulf Hansson)
- Use c_* types via kernel prelude in Rust for OPP (Abhinav Ananthu)
- Add HiSilicon uncore frequency scaling driver to devfreq (Jie Zhan)
- Allow devfreq drivers to add custom sysfs ABIs (Jie Zhan)
- Simplify the sun8i-a33-mbus devfreq driver by using more devm
functions (Uwe Kleine-König)
- Fix an index typo in trans_stat() in devfreq (Chanwoo Choi)
- Check devfreq governor before using governor->name (Lifeng Zheng)
- Remove a redundant devfreq_get_freq_range() call from
devfreq_add_device() (Lifeng Zheng)
- Limit max_freq with scaling_min_freq in devfreq (Lifeng Zheng)
- Replace sscanf() with kstrtoul() in set_freq_store() (Lifeng Zheng)
- Extend the asynchronous suspend and resume of devices to handle
suppliers like parents and consumers like children (Rafael Wysocki)
- Make pm_runtime_force_resume() work for drivers that set the
DPM_FLAG_SMART_SUSPEND flag and allow PCI drivers and drivers that
collaborate with the general ACPI PM domain to set it (Rafael
Wysocki)
- Add kernel parameter to disable asynchronous suspend/resume of
devices (Tudor Ambarus)
- Drop redundant might_sleep() calls from some functions in the device
suspend/resume core code (Zhongqiu Han)
- Fix the handling of monitors connected right before waking up the
system from sleep (tuhaowen)
- Clean up MAINTAINERS entries for suspend and hibernation (Rafael
Wysocki)
- Fix error code path in the KEXEC_JUMP flow and drop a redundant
pm_restore_gfp_mask() call from it (Rafael Wysocki)
- Rearrange suspend/resume error handling in the core device suspend
and resume code (Rafael Wysocki)
- Fix up white space that does not follow coding style in the
hibernation core code (Darshan Rathod)
- Document return values of suspend-related API functions in the
runtime PM framework (Sakari Ailus)
- Mark last busy stamp in multiple autosuspend-related functions in the
runtime PM framework and update its documentation (Sakari Ailus)
- Take active children into account in pm_runtime_get_if_in_use() for
consistency (Rafael Wysocki)
- Fix NULL pointer dereference in get_pd_power_uw() in the dtpm_cpu
power capping driver (Sivan Zohar-Kotzer)
- Add support for the Bartlett Lake platform to the Intel RAPL power
capping driver (Qiao Wei)
- Add PL4 support for Panther Lake to the intel_rapl_msr power capping
driver (Zhang Rui)
- Update contact information in the PM ABI docs and maintainer
information in the power domains DT binding (Rafael Wysocki)
- Update PM header inclusions to follow the IWYU (Include What You Use)
principle (Andy Shevchenko)
- Add flags to specify power on attach/detach for PM domains, make the
driver core detach PM domains in device_unbind_cleanup(), and drop
the dev_pm_domain_detach() call from the platform bus type (Claudiu
Beznea)
- Improve Python binding's Makefile for cpupower (John B. Wyatt IV)
- Fix printing of CORE, CPU fields in cpupower-monitor (Gautham Shenoy)
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Merge tag 'pm-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"As is tradition, cpufreq is the part with the largest number of
updates that include core fixes and cleanups as well as updates of
several assorted drivers, but there are also quite a few updates
related to system sleep, mostly focused on asynchronous suspend and
resume of devices and on making the integration of system suspend
and resume with runtime PM easier.
Runtime PM is also updated to allow some code duplication in drivers
to be eliminated going forward and to work more consistently overall
in some cases.
Apart from that, there are some driver core updates related to PM
domains that should help to address ordering issues with devm_ cleanup
routines relying on PM domains, some assorted devfreq updates
including core fixes and cleanups, tooling updates, and documentation
and MAINTAINERS updates.
Specifics:
- Fix two initialization ordering issues in the cpufreq core and a
governor initialization error path in it, and clean it up (Lifeng
Zheng)
- Add Granite Rapids support in no-HWP mode to the intel_pstate
cpufreq driver (Li RongQing)
- Make intel_pstate always use HWP_DESIRED_PERF when operating in the
passive mode (Rafael Wysocki)
- Allow building the tegra124 cpufreq driver as a module (Aaron
Kling)
- Do minor cleanups for Rust cpufreq and cpumask APIs and fix
MAINTAINERS entry for cpu.rs (Abhinav Ananthu, Ritvik Gupta, Lukas
Bulwahn)
- Clean up assorted cpufreq drivers (Arnd Bergmann, Dan Carpenter,
Krzysztof Kozlowski, Sven Peter, Svyatoslav Ryhel, Lifeng Zheng)
- Add the NEED_UPDATE_LIMITS flag to the CPPC cpufreq driver
(Prashant Malani)
- Fix minimum performance state label error in the amd-pstate driver
documentation (Shouye Liu)
- Add the CPUFREQ_GOV_STRICT_TARGET flag to the userspace cpufreq
governor and explain HW coordination influence on it in the
documentation (Shashank Balaji)
- Fix opencoded for_each_cpu() in idle_state_valid() in the DT
cpuidle driver (Yury Norov)
- Remove info about non-existing QoS interfaces from the PM QoS
documentation (Ulf Hansson)
- Use c_* types via kernel prelude in Rust for OPP (Abhinav Ananthu)
- Add HiSilicon uncore frequency scaling driver to devfreq (Jie Zhan)
- Allow devfreq drivers to add custom sysfs ABIs (Jie Zhan)
- Simplify the sun8i-a33-mbus devfreq driver by using more devm
functions (Uwe Kleine-König)
- Fix an index typo in trans_stat() in devfreq (Chanwoo Choi)
- Check devfreq governor before using governor->name (Lifeng Zheng)
- Remove a redundant devfreq_get_freq_range() call from
devfreq_add_device() (Lifeng Zheng)
- Limit max_freq with scaling_min_freq in devfreq (Lifeng Zheng)
- Replace sscanf() with kstrtoul() in set_freq_store() (Lifeng Zheng)
- Extend the asynchronous suspend and resume of devices to handle
suppliers like parents and consumers like children (Rafael Wysocki)
- Make pm_runtime_force_resume() work for drivers that set the
DPM_FLAG_SMART_SUSPEND flag and allow PCI drivers and drivers that
collaborate with the general ACPI PM domain to set it (Rafael
Wysocki)
- Add kernel parameter to disable asynchronous suspend/resume of
devices (Tudor Ambarus)
- Drop redundant might_sleep() calls from some functions in the
device suspend/resume core code (Zhongqiu Han)
- Fix the handling of monitors connected right before waking up the
system from sleep (tuhaowen)
- Clean up MAINTAINERS entries for suspend and hibernation (Rafael
Wysocki)
- Fix error code path in the KEXEC_JUMP flow and drop a redundant
pm_restore_gfp_mask() call from it (Rafael Wysocki)
- Rearrange suspend/resume error handling in the core device suspend
and resume code (Rafael Wysocki)
- Fix up white space that does not follow coding style in the
hibernation core code (Darshan Rathod)
- Document return values of suspend-related API functions in the
runtime PM framework (Sakari Ailus)
- Mark last busy stamp in multiple autosuspend-related functions in
the runtime PM framework and update its documentation (Sakari
Ailus)
- Take active children into account in pm_runtime_get_if_in_use() for
consistency (Rafael Wysocki)
- Fix NULL pointer dereference in get_pd_power_uw() in the dtpm_cpu
power capping driver (Sivan Zohar-Kotzer)
- Add support for the Bartlett Lake platform to the Intel RAPL power
capping driver (Qiao Wei)
- Add PL4 support for Panther Lake to the intel_rapl_msr power
capping driver (Zhang Rui)
- Update contact information in the PM ABI docs and maintainer
information in the power domains DT binding (Rafael Wysocki)
- Update PM header inclusions to follow the IWYU (Include What You
Use) principle (Andy Shevchenko)
- Add flags to specify power on attach/detach for PM domains, make
the driver core detach PM domains in device_unbind_cleanup(), and
drop the dev_pm_domain_detach() call from the platform bus type
(Claudiu Beznea)
- Improve Python binding's Makefile for cpupower (John B. Wyatt IV)
- Fix printing of CORE, CPU fields in cpupower-monitor (Gautham
Shenoy)"
* tag 'pm-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (75 commits)
cpufreq: CPPC: Mark driver with NEED_UPDATE_LIMITS flag
PM: docs: Use my kernel.org address in ABI docs and DT bindings
PM: hibernate: Fix up white space that does not follow coding style
PM: sleep: Rearrange suspend/resume error handling in the core
Documentation: amd-pstate:fix minimum performance state label error
PM: runtime: Take active children into account in pm_runtime_get_if_in_use()
kexec_core: Drop redundant pm_restore_gfp_mask() call
kexec_core: Fix error code path in the KEXEC_JUMP flow
PM: sleep: Clean up MAINTAINERS entries for suspend and hibernation
drivers: cpufreq: add Tegra114 support
rust: cpumask: Replace `MaybeUninit` and `mem::zeroed` with `Opaque` APIs
cpufreq: Exit governor when failed to start old governor
cpufreq: Move the check of cpufreq_driver->get into cpufreq_verify_current_freq()
cpufreq: Init policy->rwsem before it may be possibly used
cpufreq: Initialize cpufreq-based frequency-invariance later
cpufreq: Remove duplicate check in __cpufreq_offline()
cpufreq: Contain scaling_cur_freq.attr in cpufreq_attrs
cpufreq: intel_pstate: Add Granite Rapids support in no-HWP mode
cpufreq: intel_pstate: Always use HWP_DESIRED_PERF in passive mode
PM / devfreq: Add HiSilicon uncore frequency scaling driver
...
|
||
|
Ulf Hansson
|
d87547e08b |
pmdomain: Merge branch fixes into next
Merge the pmdomain fixes for v6.16-rc[n] into the next branch, to allow them to get tested together with the new changes that are targeted for v6.17. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> |
||
|
Daniel Lezcano
|
621a88dbfe |
cpuidle: psci: Fix cpuhotplug routine with PREEMPT_RT=y
Currently cpu hotplug with the PREEMPT_RT option set in the kernel is
not supported because the underlying generic power domain functions
used in the cpu hotplug callbacks are incompatible from a lock point
of view. This situation prevents the suspend to idle to reach the
deepest idle state for the "cluster" as identified in the
undermentioned commit.
Use the compatible ones when PREEMPT_RT is enabled and remove the
boolean disabling the hotplug callbacks with this option.
With this change the platform can reach the deepest idle state
allowing at suspend time to consume less power.
Tested-on Lenovo T14s with the following script:
echo 0 > /sys/devices/system/cpu/cpu3/online
BEFORE=$(cat /sys/kernel/debug/pm_genpd/power-domain-cpu-cluster0/idle_states | grep S0 | awk '{ print $3 }') ;
rtcwake -s 1 -m mem;
AFTER=$(cat /sys/kernel/debug/pm_genpd/power-domain-cpu-cluster0/idle_states | grep S0 | awk '{ print $3 }');
if [ $BEFORE -lt $AFTER ]; then
echo "Test successful"
else
echo "Test failed"
fi
echo 1 > /sys/devices/system/cpu/cpu3/online
Fixes:
|
||
|
Yury Norov [NVIDIA]
|
ee2736848f |
cpuidle: dt: fix opencoded for_each_cpu() in idle_state_valid()
The function opencodes the for_each_cpu_from() by using an open for-loop. Fix that in sake of readability. While there, drop the 'valid' variable as it's pretty useless here. Signed-off-by: Yury Norov [NVIDIA] <yury.norov@gmail.com> Link: https://patch.msgid.link/20250604213908.27819-1-yury.norov@gmail.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Ulf Hansson
|
eb34a0b5fe |
cpuidle: riscv-sbi: Drop redundant sync_state support
The recent updates to the genpd core, can entirely manage the sync_state support for the cpuidle-riscv-sbi-domain. More precisely, genpd prevents our ->power_off() callback from being invoked, until all of our consumers are ready for it. Let's therefore drop the sync_state support for the cpuidle-riscv-sbi-domain as it has become redundant. Cc: Anup Patel <anup@brainfault.org> Cc: linux-riscv@lists.infradead.org Tested-by: Hiago De Franco <hiago.franco@toradex.com> # Colibri iMX8X Tested-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> # TI AM62A,Xilinx ZynqMP ZCU106 Reviewed-by: Rahul Pathak <rpathak@ventanamicro.com> Reviewed-by: Anup Patel <anup@brainfault.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20250701114733.636510-25-ulf.hansson@linaro.org |
||
|
Ulf Hansson
|
039d2b0a1b |
cpuidle: psci: Drop redundant sync_state support
The recent updates to the genpd core, can entirely manage the sync_state support for the cpuidle-psci-domain. More precisely, genpd prevents our ->power_off() callback from being invoked, until all of our consumers are ready for it. Let's therefore drop the sync_state support for the cpuidle-psci-domain as it has become redundant. Tested-by: Hiago De Franco <hiago.franco@toradex.com> # Colibri iMX8X Tested-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> # TI AM62A,Xilinx ZynqMP ZCU106 Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20250701114733.636510-24-ulf.hansson@linaro.org |
||
|
Ulf Hansson
|
ee766b0175 |
cpuidle: riscv-sbi: Opt-out from genpd's common ->sync_state() support
The riscv-sbi-domain implements its own specific ->sync_state() callback. Let's set the GENPD_FLAG_NO_SYNC_STATE to inform genpd about it. Moreover, let's call of_genpd_sync_state() to make sure genpd tries to power off unused PM domains. Cc: Anup Patel <anup@brainfault.org> Cc: linux-riscv@lists.infradead.org Tested-by: Hiago De Franco <hiago.franco@toradex.com> # Colibri iMX8X Tested-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> # TI AM62A,Xilinx ZynqMP ZCU106 Reviewed-by: Anup Patel <anup@brainfault.org> Reviewed-by: Rahul Pathak <rpathak@ventanamicro.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20250701114733.636510-12-ulf.hansson@linaro.org |
||
|
Ulf Hansson
|
7cfa380de7 |
cpuidle: psci: Opt-out from genpd's common ->sync_state() support
The cpuidle-psci-domain implements its own specific ->sync_state() callback. Let's set the GENPD_FLAG_NO_SYNC_STATE to inform genpd about it. Moreover, let's call of_genpd_sync_state() to make sure genpd tries to power off unused PM domains. Tested-by: Hiago De Franco <hiago.franco@toradex.com> # Colibri iMX8X Tested-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> # TI AM62A,Xilinx ZynqMP ZCU106 Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20250701114733.636510-11-ulf.hansson@linaro.org |
||
|
Rafael J. Wysocki
|
3d031d0d8d |
Merge branch 'pm-cpuidle'
Fix an issue in the PSCI cpuidle driver introduced recently and a nasty x86 power regression introduced in 6.15: - Prevent freeing an uninitialized pointer in error path of dt_idle_state_present() in the PSCI cpuidle driver (Dan Carpenter). - Revert an x86 commit that went into 6.15 and caused idle power, including power in suspend-to-idle, to rise rather dramatically on systems booting with "nosmt" in the kernel command line (Rafael Wysocki). * pm-cpuidle: Revert "x86/smp: Eliminate mwait_play_dead_cpuid_hint()" cpuidle: psci: Fix uninitialized variable in dt_idle_state_present() |
||
|
Linus Torvalds
|
c89756bcf4 |
Power management updates for 6.16-rc1
- Fix potential division-by-zero error in em_compute_costs() (Yaxiong
Tian).
- Fix typos in energy model documentation and example driver code (Moon
Hee Lee, Atul Kumar Pant).
- Rearrange the energy model management code and add a new function for
adjusting a CPU energy model after adjusting the capacity of the
given CPU to it (Rafael Wysocki).
- Refactor cpufreq_online(), add and use cpufreq policy locking guards,
use __free() in policy reference counting, and clean up core cpufreq
code on top of that (Rafael Wysocki).
- Fix boost handling on CPU suspend/resume and sysfs updates (Viresh
Kumar).
- Fix des_perf clamping with max_perf in amd_pstate_update() (Dhananjay
Ugwekar).
- Add offline, online and suspend callbacks to the amd-pstate driver,
rename and use the existing amd_pstate_epp callbacks in it (Dhananjay
Ugwekar).
- Add support for the "Requested CPU Min frequency" BIOS option to the
amd-pstate driver (Dhananjay Ugwekar).
- Reset amd-pstate driver mode after running selftests (Swapnil
Sapkal).
- Avoid shadowing ret in amd_pstate_ut_check_driver() (Nathan
Chancellor).
- Add helper for governor checks to the schedutil cpufreq governor and
move cpufreq-specific EAS checks to cpufreq (Rafael Wysocki).
- Populate the cpu_capacity sysfs entries from the intel_pstate driver
after registering asym capacity support (Ricardo Neri).
- Add support for enabling Energy-aware scheduling (EAS) to the
intel_pstate driver when operating in the passive mode on a hybrid
platform (Rafael Wysocki).
- Drop redundant cpus_read_lock() from store_local_boost() in the
cpufreq core (Seyediman Seyedarab).
- Replace sscanf() with kstrtouint() in the cpufreq code and use a
symbol instead of a raw number in it (Bowen Yu).
- Add support for autonomous CPU performance state selection to the
CPPC cpufreq driver (Lifeng Zheng).
- OPP: Add dev_pm_opp_set_level() (Praveen Talari).
- Introduce scope-based cleanup headers and mutex locking guards in OPP
core (Viresh Kumar).
- Switch OPP to use kmemdup_array() (Zhang Enpei).
- Optimize bucket assignment when next_timer_ns equals KTIME_MAX in the
menu cpuidle governor (Zhongqiu Han).
- Convert the cpuidle PSCI driver to a faux device one (Sudeep Holla).
- Add C1 demotion on/off sysfs knob to the intel_idle driver (Artem
Bityutskiy).
- Fix typos in two comments in the teo cpuidle governor (Atul Kumar
Pant).
- Fix denying of auto suspend in pm_suspend_timer_fn() (Charan Teja
Kalla).
- Move debug runtime PM attributes to runtime_attrs[] (Rafael Wysocki).
- Add new devm_ functions for enabling runtime PM and runtime PM
reference counting (Bence Csókás).
- Remove size arguments from strscpy() calls in the hibernation core
code (Thorsten Blum).
- Adjust the handling of devices with asynchronous suspend enabled
during system suspend and resume to start resuming them immediately
after resuming their parents and to start suspending such a device
immediately after suspending its first child (Rafael Wysocki).
- Adjust messages printed during tasks freezing to avoid using
pr_cont() (Andrew Sayers, Paul Menzel).
- Clean up unnecessary usage of !! in pm_print_times_init() (Zihuan
Zhang).
- Add missing wakeup source attribute relax_count to sysfs and
remove the space character at the end ofi the string produced by
pm_show_wakelocks() (Zijun Hu).
- Add configurable pm_test delay for hibernation (Zihuan Zhang).
- Disable asynchronous suspend in ucsi_ccg_probe() to prevent the
cypd4226 device on Tegra boards from suspending prematurely (Jon
Hunter).
- Unbreak printing PM debug messages during hibernation and clean up
some related code (Rafael Wysocki).
- Add a systemd service to run cpupower and change cpupower binding's
Makefile to use -lcpupower (John B. Wyatt IV, Francesco Poli).
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Merge tag 'pm-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"Once again, the changes are dominated by cpufreq updates, but this
time the majority of them are cpufreq core changes, mostly related to
the introduction of policy locking guards and __free() usage, and
fixes related to boost handling.
Still, there is also a significant update of the intel_pstate driver
making it register an energy model when running on a hybrid platform
which is used for enabling energy-aware scheduling (EAS) if the driver
operates in the passive mode (and schedutil is used as the cpufreq
governor for all CPUs which is the passive mode default).
There are some amd-pstate driver updates too, for a good measure,
including the "Requested CPU Min frequency" BIOS option support and
new online/offline callbacks.
In the cpuidle space, the most significant change is the addition of a
C1 demotion on/off sysfs knob to intel_idle which should help some
users to configure their systems more precisely. There is also the
conversion of the PSCI cpuidle driver to a faux device one and there
are two small updates of cpuidle governors.
Device power management is also modified quite a bit, especially the
handling of devices with asynchronous suspend and resume enabled
during system transitions. They are now going to be handled more
asynchronously during suspend transitions and somewhat less
aggressively during resume transitions.
Apart from the above, the operating performance points (OPP) library
is now going to use mutex locking guards and scope-based cleanup
helpers and there is the usual bunch of assorted fixes and code
cleanups.
Specifics:
- Fix potential division-by-zero error in em_compute_costs() (Yaxiong
Tian)
- Fix typos in energy model documentation and example driver code
(Moon Hee Lee, Atul Kumar Pant)
- Rearrange the energy model management code and add a new function
for adjusting a CPU energy model after adjusting the capacity of
the given CPU to it (Rafael Wysocki)
- Refactor cpufreq_online(), add and use cpufreq policy locking
guards, use __free() in policy reference counting, and clean up
core cpufreq code on top of that (Rafael Wysocki)
- Fix boost handling on CPU suspend/resume and sysfs updates (Viresh
Kumar)
- Fix des_perf clamping with max_perf in amd_pstate_update()
(Dhananjay Ugwekar)
- Add offline, online and suspend callbacks to the amd-pstate driver,
rename and use the existing amd_pstate_epp callbacks in it
(Dhananjay Ugwekar)
- Add support for the "Requested CPU Min frequency" BIOS option to
the amd-pstate driver (Dhananjay Ugwekar)
- Reset amd-pstate driver mode after running selftests (Swapnil
Sapkal)
- Avoid shadowing ret in amd_pstate_ut_check_driver() (Nathan
Chancellor)
- Add helper for governor checks to the schedutil cpufreq governor
and move cpufreq-specific EAS checks to cpufreq (Rafael Wysocki)
- Populate the cpu_capacity sysfs entries from the intel_pstate
driver after registering asym capacity support (Ricardo Neri)
- Add support for enabling Energy-aware scheduling (EAS) to the
intel_pstate driver when operating in the passive mode on a hybrid
platform (Rafael Wysocki)
- Drop redundant cpus_read_lock() from store_local_boost() in the
cpufreq core (Seyediman Seyedarab)
- Replace sscanf() with kstrtouint() in the cpufreq code and use a
symbol instead of a raw number in it (Bowen Yu)
- Add support for autonomous CPU performance state selection to the
CPPC cpufreq driver (Lifeng Zheng)
- OPP: Add dev_pm_opp_set_level() (Praveen Talari)
- Introduce scope-based cleanup headers and mutex locking guards in
OPP core (Viresh Kumar)
- Switch OPP to use kmemdup_array() (Zhang Enpei)
- Optimize bucket assignment when next_timer_ns equals KTIME_MAX in
the menu cpuidle governor (Zhongqiu Han)
- Convert the cpuidle PSCI driver to a faux device one (Sudeep Holla)
- Add C1 demotion on/off sysfs knob to the intel_idle driver (Artem
Bityutskiy)
- Fix typos in two comments in the teo cpuidle governor (Atul Kumar
Pant)
- Fix denying of auto suspend in pm_suspend_timer_fn() (Charan Teja
Kalla)
- Move debug runtime PM attributes to runtime_attrs[] (Rafael
Wysocki)
- Add new devm_ functions for enabling runtime PM and runtime PM
reference counting (Bence Csókás)
- Remove size arguments from strscpy() calls in the hibernation core
code (Thorsten Blum)
- Adjust the handling of devices with asynchronous suspend enabled
during system suspend and resume to start resuming them immediately
after resuming their parents and to start suspending such a device
immediately after suspending its first child (Rafael Wysocki)
- Adjust messages printed during tasks freezing to avoid using
pr_cont() (Andrew Sayers, Paul Menzel)
- Clean up unnecessary usage of !! in pm_print_times_init() (Zihuan
Zhang)
- Add missing wakeup source attribute relax_count to sysfs and remove
the space character at the end ofi the string produced by
pm_show_wakelocks() (Zijun Hu)
- Add configurable pm_test delay for hibernation (Zihuan Zhang)
- Disable asynchronous suspend in ucsi_ccg_probe() to prevent the
cypd4226 device on Tegra boards from suspending prematurely (Jon
Hunter)
- Unbreak printing PM debug messages during hibernation and clean up
some related code (Rafael Wysocki)
- Add a systemd service to run cpupower and change cpupower binding's
Makefile to use -lcpupower (John B. Wyatt IV, Francesco Poli)"
* tag 'pm-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (72 commits)
cpufreq: CPPC: Add support for autonomous selection
cpufreq: Update sscanf() to kstrtouint()
cpufreq: Replace magic number
OPP: switch to use kmemdup_array()
PM: freezer: Rewrite restarting tasks log to remove stray *done.*
PM: runtime: fix denying of auto suspend in pm_suspend_timer_fn()
cpufreq: drop redundant cpus_read_lock() from store_local_boost()
cpupower: do not install files to /etc/default/
cpupower: do not call systemctl at install time
cpupower: do not write DESTDIR to cpupower.service
PM: sleep: Introduce pm_sleep_transition_in_progress()
cpufreq/amd-pstate: Avoid shadowing ret in amd_pstate_ut_check_driver()
cpufreq: intel_pstate: Document hybrid processor support
cpufreq: intel_pstate: EAS: Increase cost for CPUs using L3 cache
cpufreq: intel_pstate: EAS support for hybrid platforms
PM: EM: Introduce em_adjust_cpu_capacity()
PM: EM: Move CPU capacity check to em_adjust_new_capacity()
PM: EM: Documentation: Fix typos in example driver code
cpufreq: Drop policy locking from cpufreq_policy_is_good_for_eas()
PM: sleep: Introduce pm_suspend_in_progress()
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Dan Carpenter
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39cdf87a97 |
cpuidle: psci: Fix uninitialized variable in dt_idle_state_present()
If the first cpu_node = of_cpu_device_node_get() fails then the cleanup.h
code will try to free "state_node" but it hasn't been initialized yet.
Declare the device_nodes where they are initialized to fix this.
Fixes:
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Sudeep Holla
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5836ebeb4a |
cpuidle: psci: Avoid initializing faux device if no DT idle states are present
Commit |
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Ulf Hansson
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d0252ba821 |
cpuidle: psci: Correct the domain-idlestate statistics in debugfs
When trying to enter a domain-idlestate, we may occasionally fail to enter the state, which is informed to us by psci_cpu_suspend_enter() returning an error-code. In these cases, our corresponding genpd->power_off() callback has already returned zero to indicate success, leading to getting in-correct domain-idlestate statistics in debugfs for the genpd in question. Let's fix this by making use of the new pm_genpd_inc_rejected() helper, as it allows us to correct the domain-idlestate statistics for this type of scenario. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20250314100103.1294715-4-ulf.hansson@linaro.org |
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Ulf Hansson
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3290e9f98a |
cpuidle: psci: Move the per CPU variable domain_state to a struct
To prepare to extend the per CPU variable domain_state to include more data, let's move it into a struct. A subsequent change will add the new data. This change have no intended functional impact. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Link: https://lore.kernel.org/r/20250314100103.1294715-3-ulf.hansson@linaro.org |
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Sudeep Holla
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af5376a77e |
cpuidle: psci: Transition to the faux device interface
The PSCI cpuidle driver does not require the creation of a platform device. Originally, this approach was chosen for simplicity when the driver was first implemented. With the introduction of the lightweight faux device interface, we now have a more appropriate alternative. Migrate the driver to utilize the faux bus, given that the platform device it previously created was not a real one anyway. This will simplify the code, reducing its footprint while maintaining functionality. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Link: https://patch.msgid.link/20250317-plat2faux_dev-v1-1-5fe67c085ad5@arm.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |