Changes in cpufreq.rs

9e4e86a604dfd06402933467578c4b79f5412b2c - Merge tag 'v7.0-rc4' into togreg

Sun, 22 Mar 2026 13:20:42 +0100

Merge tag 'v7.0-rc4' into togregLinux 7.0-rc4Required for the ds4422 series which is build upon;5187e03b817c ("iio: dac: ds4424: reject -128 RAW value") List of files: /linux/rust/kernel/cpufreq.rs

3812943e01fdeabd80118b01c1484f6bd4d324d9 - Merge 7.0-rc4 into char-misc-next

Mon, 16 Mar 2026 11:41:58 +0100

Merge 7.0-rc4 into char-misc-nextWe need the char/misc/iio fixes in this branch as well to build on topof.Signed-off-by: Greg Kroah-Hartman List of files: /linux/rust/kernel/cpufreq.rs

f4b369c6fe0ceaba2da2daff8c9eb415f85926dd - Merge branch 'next' into for-linus

Mon, 20 Apr 2026 03:28:57 +0200

Merge branch 'next' into for-linusPrepare input updates for 7.1 merge window. List of files: /linux/rust/kernel/cpufreq.rs

117f8e71d61dab08b9be84b7dd0dd65916ed13c0 - Merge tag 'v7.0-rc5' into next

Tue, 24 Mar 2026 21:49:39 +0100

Merge tag 'v7.0-rc5' into nextSync up with mainline to pull in a fix for smb compilation error. List of files: /linux/rust/kernel/cpufreq.rs

0421ccdfad0d92713a812a5aeb7d07b0ea7213c8 - Merge tag 'v7.0-rc3' into next

Thu, 12 Mar 2026 18:44:42 +0100

Merge tag 'v7.0-rc3' into nextSync up with the mainline to brig up the latest changes, specificallychanges to ALPS driver. List of files: /linux/rust/kernel/cpufreq.rs

d4eb7b2da66c848709e31585b9c371fa234abc39 - Merge branch 'for-7.1/core-v2' into for-linus

Thu, 16 Apr 2026 21:01:18 +0200

Merge branch 'for-7.1/core-v2' into for-linus- fixed handling of 0-sized reports (Dmitry Torokhov)- convert core code to __free() (Dmitry Torokhov)- support for multiple batteries per HID device (Lucas Zampieri) List of files: /linux/rust/kernel/cpufreq.rs

d7c8087a9cd8979d70edfe7c7feda9423feae3ab - Merge tag 'pm-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Tue, 14 Apr 2026 04:47:52 +0200

Merge tag 'pm-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmPull power management updates from Rafael Wysocki: "Once again, cpufreq is the most active development area, mostly because of the new feature additions and documentation updates in the amd-pstate driver, but there are also changes in the cpufreq core related to boost support and other assorted updates elsewhere. Next up are power capping changes due to the major cleanup of the Intel RAPL driver. On the cpuidle front, a new C-states table for Intel Panther Lake is added to the intel_idle driver, the stopped tick handling in the menu and teo governors is updated, and there are a couple of cleanups. Apart from the above, support for Tegra114 is added to devfreq and there are assorted cleanups of that code, there are also two updates of the operating performance points (OPP) library, two minor updates related to hibernation, and cpupower utility man pages updates and cleanups. Specifics: - Update qcom-hw DT bindings to include Eliza hardware (Abel Vesa) - Update cpufreq-dt-platdev blocklist (Faruque Ansari) - Minor updates to driver and dt-bindings for Tegra (Thierry Reding, Rosen Penev) - Add MAINTAINERS entry for CPPC driver (Viresh Kumar) - Add support for new features: CPPC performance priority, Dynamic EPP, Raw EPP, and new unit tests for them to amd-pstate (Gautham Shenoy, Mario Limonciello) - Fix sysfs files being present when HW missing and broken/outdated documentation in the amd-pstate driver (Ninad Naik, Gautham Shenoy) - Pass the policy to cpufreq_driver->adjust_perf() to avoid using cpufreq_cpu_get() in the .adjust_perf() callback in amd-pstate which leads to a scheduling-while-atomic bug (K Prateek Nayak) - Clean up dead code in Kconfig for cpufreq (Julian Braha) - Remove max_freq_req update for pre-existing cpufreq policy and add a boost_freq_req QoS request to save the boost constraint instead of overwriting the last scaling_max_freq constraint (Pierre Gondois) - Embed cpufreq QoS freq_req objects in cpufreq policy so they all are allocated in one go along with the policy to simplify lifetime rules and avoid error handling issues (Viresh Kumar) - Use DMI max speed when CPPC is unavailable in the acpi-cpufreq scaling driver (Henry Tseng) - Switch policy_is_shared() in cpufreq to using cpumask_nth() instead of cpumask_weight() because the former is more efficient (Yury Norov) - Use sysfs_emit() in sysfs show functions for cpufreq governor attributes (Thorsten Blum) - Update intel_pstate to stop returning an error when "off" is written to its status sysfs attribute while the driver is already off (Fabio De Francesco) - Include current frequency in the debug message printed by __cpufreq_driver_target() (Pengjie Zhang) - Refine stopped tick handling in the menu cpuidle governor and rearrange stopped tick handling in the teo cpuidle governor (Rafael Wysocki) - Add Panther Lake C-states table to the intel_idle driver (Artem Bityutskiy) - Clean up dead dependencies on CPU_IDLE in Kconfig (Julian Braha) - Simplify cpuidle_register_device() with guard() (Huisong Li) - Use performance level if available to distinguish between rates in OPP debugfs (Manivannan Sadhasivam) - Fix scoped_guard in dev_pm_opp_xlate_required_opp() (Viresh Kumar) - Return -ENODATA if the snapshot image is not loaded (Alberto Garcia) - Remove inclusion of crypto/hash.h from hibernate_64.c on x86 (Eric Biggers) - Clean up and rearrange the intel_rapl power capping driver to make the respective interface drivers (TPMI, MSR, and MMOI) hold their own settings and primitives and consolidate PL4 and PMU support flags into rapl_defaults (Kuppuswamy Sathyanarayanan) - Correct kernel-doc function parameter names in the power capping core code (Randy Dunlap) - Remove unneeded casting for HZ_PER_KHZ in devfreq (Andy Shevchenko) - Use _visible attribute to replace create/remove_sysfs_files() in devfreq (Pengjie Zhang) - Add Tegra114 support to activity monitor device in tegra30-devfreq as a preparation to upcoming EMC controller support (Svyatoslav Ryhel) - Fix mistakes in cpupower man pages, add the boost and epp options to the cpupower-frequency-info man page, and add the perf-bias option to the cpupower-info man page (Roberto Ricci) - Remove unnecessary extern declarations from getopt.h in arguments parsing functions in cpufreq-set, cpuidle-info, cpuidle-set, cpupower-info, and cpupower-set utilities (Kaushlendra Kumar)"* tag 'pm-7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (74 commits) cpufreq/amd-pstate: Add POWER_SUPPLY select for dynamic EPP cpupower: remove extern declarations in cmd functions cpuidle: Simplify cpuidle_register_device() with guard() PM / devfreq: tegra30-devfreq: add support for Tegra114 PM / devfreq: use _visible attribute to replace create/remove_sysfs_files() PM / devfreq: Remove unneeded casting for HZ_PER_KHZ MAINTAINERS: amd-pstate: Step down as maintainer, add Prateek as reviewer cpufreq: Pass the policy to cpufreq_driver->adjust_perf() cpufreq/amd-pstate: Pass the policy to amd_pstate_update() cpufreq/amd-pstate-ut: Add a unit test for raw EPP cpufreq/amd-pstate: Add support for raw EPP writes cpufreq/amd-pstate: Add support for platform profile class cpufreq/amd-pstate: add kernel command line to override dynamic epp cpufreq/amd-pstate: Add dynamic energy performance preference Documentation: amd-pstate: fix dead links in the reference section cpufreq/amd-pstate: Cache the max frequency in cpudata Documentation/amd-pstate: Add documentation for amd_pstate_floor_{freq,count} Documentation/amd-pstate: List amd_pstate_prefcore_ranking sysfs file Documentation/amd-pstate: List amd_pstate_hw_prefcore sysfs file amd-pstate-ut: Add a testcase to validate the visibility of driver attributes ... List of files: /linux/rust/kernel/cpufreq.rs

83e990310dfc92be7cf84c9008137d3275363d94 - Merge branch 'pm-cpufreq'

Fri, 10 Apr 2026 12:05:32 +0200

Merge branch 'pm-cpufreq'Merge cpufreq updates for 7.1-rc1: - Update qcom-hw DT bindings to include Eliza hardware (Abel Vesa) - Update cpufreq-dt-platdev blocklist (Faruque Ansari) - Minor updates to driver and dt-bindings for Tegra (Thierry Reding, Rosen Penev) - Add MAINTAINERS entry for CPPC driver (Viresh Kumar) - Add support for new features: CPPC performance priority, Dynamic EPP, Raw EPP, and new unit tests for them to amd-pstate (Gautham Shenoy, Mario Limonciello) - Fix sysfs files being present when HW missing and broken/outdated documentation in the amd-pstate driver (Ninad Naik, Gautham Shenoy) - Pass the policy to cpufreq_driver->adjust_perf() to avoid using cpufreq_cpu_get() in the .adjust_perf() callback in amd-pstate which leads to a scheduling-while-atomic bug (K Prateek Nayak) - Clean up dead code in Kconfig for cpufreq (Julian Braha) - Remove max_freq_req update for pre-existing cpufreq policy and add a boost_freq_req QoS request to save the boost constraint instead of overwriting the last scaling_max_freq constraint (Pierre Gondois) - Embed cpufreq QoS freq_req objects in cpufreq policy so they all are allocated in one go along with the policy to simplify lifetime rules and avoid error handling issues (Viresh Kumar) - Use DMI max speed when CPPC is unavailable in the acpi-cpufreq scaling driver (Henry Tseng) - Switch policy_is_shared() in cpufreq to using cpumask_nth() instead of cpumask_weight() because the former is more efficient (Yury Norov) - Use sysfs_emit() in sysfs show functions for cpufreq governor attributes (Thorsten Blum) - Update intel_pstate to stop returning an error when "off" is written to its status sysfs attribute while the driver is already off (Fabio De Francesco) - Include current frequency in the debug message printed by __cpufreq_driver_target() (Pengjie Zhang)* pm-cpufreq: (38 commits) cpufreq/amd-pstate: Add POWER_SUPPLY select for dynamic EPP MAINTAINERS: amd-pstate: Step down as maintainer, add Prateek as reviewer cpufreq: Pass the policy to cpufreq_driver->adjust_perf() cpufreq/amd-pstate: Pass the policy to amd_pstate_update() cpufreq/amd-pstate-ut: Add a unit test for raw EPP cpufreq/amd-pstate: Add support for raw EPP writes cpufreq/amd-pstate: Add support for platform profile class cpufreq/amd-pstate: add kernel command line to override dynamic epp cpufreq/amd-pstate: Add dynamic energy performance preference Documentation: amd-pstate: fix dead links in the reference section cpufreq/amd-pstate: Cache the max frequency in cpudata Documentation/amd-pstate: Add documentation for amd_pstate_floor_{freq,count} Documentation/amd-pstate: List amd_pstate_prefcore_ranking sysfs file Documentation/amd-pstate: List amd_pstate_hw_prefcore sysfs file amd-pstate-ut: Add a testcase to validate the visibility of driver attributes amd-pstate-ut: Add module parameter to select testcases amd-pstate: Introduce a tracepoint trace_amd_pstate_cppc_req2() amd-pstate: Add sysfs support for floor_freq and floor_count amd-pstate: Add support for CPPC_REQ2 and FLOOR_PERF x86/cpufeatures: Add AMD CPPC Performance Priority feature. ... List of files: /linux/rust/kernel/cpufreq.rs

b06b348e855383ed80e041299f3925cdd7dff3da - Merge tag 'rust-timekeeping-for-v7.1' of https://github.com/Rust-for-Linux/linux into rust-next

Wed, 08 Apr 2026 09:46:01 +0200

Merge tag 'rust-timekeeping-for-v7.1' of https://github.com/Rust-for-Linux/linux into rust-nextPull timekeeping updates from Andreas Hindborg: - Expand the example section in the 'HrTimer' documentation. - Mark the 'ClockSource' trait as unsafe to ensure valid values for 'ktime_get()'. - Add 'Delta::from_nanos()'.This is a back merge since the pull request has a newer base -- we willavoid that in the future.And, given it is a back merge, it happens to resolve the "subtle" conflictaround '--remap-path-{prefix,scope}' that I discussed in linux-next [1],plus a few other common conflicts. The result matches what we did fornext-20260407.The actual diffstat (i.e. using a temporary merge of upstream first) is: rust/kernel/time.rs | 32 ++++- rust/kernel/time/hrtimer.rs | 336 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 362 insertions(+), 6 deletions(-)Link: https://lore.kernel.org/linux-next/CANiq72kdxB=W3_CV1U44oOK3SssztPo2wLDZt6LP94TEO+Kj4g@mail.gmail.com/ [1]* tag 'rust-timekeeping-for-v7.1' of https://github.com/Rust-for-Linux/linux: hrtimer: add usage examples to documentation rust: time: make ClockSource unsafe trait rust/time: Add Delta::from_nanos() List of files: /linux/rust/kernel/cpufreq.rs

bad28e01f206c533a8ff7fec5efe8ab9607a8364 - Merge tag 'v7.0-rc6' into irq/core

Sat, 04 Apr 2026 20:59:34 +0200

Merge tag 'v7.0-rc6' into irq/coreto be able to merge the hyper-v patch related to randomness. List of files: /linux/rust/kernel/cpufreq.rs

5cdfedf68e6ee3905d36e387d49699d4d0848637 - Merge tag 'amd-pstate-v7.1-2026-04-02' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linux

Sat, 04 Apr 2026 20:55:56 +0200

Merge tag 'amd-pstate-v7.1-2026-04-02' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linuxPull amd-pstate new content for 7.1 (2026-04-02) from Mario Limonciello:"Add support for new features: * CPPC performance priority * Dynamic EPP * Raw EPP * New unit tests for new features Fixes for: * PREEMPT_RT * sysfs files being present when HW missing * Broken/outdated documentation"* tag 'amd-pstate-v7.1-2026-04-02' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linux: (22 commits) MAINTAINERS: amd-pstate: Step down as maintainer, add Prateek as reviewer cpufreq: Pass the policy to cpufreq_driver->adjust_perf() cpufreq/amd-pstate: Pass the policy to amd_pstate_update() cpufreq/amd-pstate-ut: Add a unit test for raw EPP cpufreq/amd-pstate: Add support for raw EPP writes cpufreq/amd-pstate: Add support for platform profile class cpufreq/amd-pstate: add kernel command line to override dynamic epp cpufreq/amd-pstate: Add dynamic energy performance preference Documentation: amd-pstate: fix dead links in the reference section cpufreq/amd-pstate: Cache the max frequency in cpudata Documentation/amd-pstate: Add documentation for amd_pstate_floor_{freq,count} Documentation/amd-pstate: List amd_pstate_prefcore_ranking sysfs file Documentation/amd-pstate: List amd_pstate_hw_prefcore sysfs file amd-pstate-ut: Add a testcase to validate the visibility of driver attributes amd-pstate-ut: Add module parameter to select testcases amd-pstate: Introduce a tracepoint trace_amd_pstate_cppc_req2() amd-pstate: Add sysfs support for floor_freq and floor_count amd-pstate: Add support for CPPC_REQ2 and FLOOR_PERF x86/cpufeatures: Add AMD CPPC Performance Priority feature. amd-pstate: Make certain freq_attrs conditionally visible ... List of files: /linux/rust/kernel/cpufreq.rs

c03791085adcd61fa9b766ab303c7d0941d7378d - cpufreq: Pass the policy to cpufreq_driver->adjust_perf()

Mon, 16 Mar 2026 09:18:49 +0100

cpufreq: Pass the policy to cpufreq_driver->adjust_perf()cpufreq_cpu_get() can sleep on PREEMPT_RT in presence of concurrentwriter(s), however amd-pstate depends on fetching the cpudata via thepolicy's driver data which necessitates grabbing the reference.Since schedutil governor can call "cpufreq_driver->update_perf()"during sched_tick/enqueue/dequeue with rq_lock held and IRQs disabled,fetching the policy object using the cpufreq_cpu_get() helper in thescheduler fast-path leads to "BUG: scheduling while atomic" onPREEMPT_RT [1].Pass the cached cpufreq policy object in sg_policy to the update_perf()instead of just the CPU. The CPU can be inferred using "policy->cpu".The lifetime of cpufreq_policy object outlasts that of the governor andthe cpufreq driver (allocated when the CPU is onlined and only reclaimedwhen the CPU is offlined / the CPU device is removed) which makes itsafe to be referenced throughout the governor's lifetime.Closes:https://lore.kernel.org/all/20250731092316.3191-1-spasswolf@web.de/ [1]Fixes: 1d215f0319c2 ("cpufreq: amd-pstate: Add fast switch function for AMD P-State")Reported-by: Bert Karwatzki Acked-by: Viresh Kumar Signed-off-by: K Prateek Nayak Acked-by: Gary Guo # RustReviewed-by: Gautham R. Shenoy Reviewed-by: Zhongqiu Han Link: https://lore.kernel.org/r/20260316081849.19368-3-kprateek.nayak@amd.comSigned-off-by: Mario Limonciello (AMD) List of files: /linux/rust/kernel/cpufreq.rs

0542972950ef26670a5696e43c0ea2b7b6ac96d4 - Merge branch 'for-linus' into for-next

Wed, 01 Apr 2026 14:42:56 +0200

Merge branch 'for-linus' into for-nextPull 7.0 devel branch for further cleanups of ctxfi driver & co.Signed-off-by: Takashi Iwai List of files: /linux/rust/kernel/cpufreq.rs

e6fd2491789745ed8c3df86a660dfa7207129d22 - Merge branch 'master' into rdma-next

Mon, 30 Mar 2026 11:02:58 +0200

Merge branch 'master' into rdma-nextLet's bring v7.0-rc6 to the -next branch, so we can merge the DMAattributes fix [1] without merge conflicts.[1] https://lore.kernel.org/all/20260323-umem-dma-attrs-v1-1-d6890f2e6a1e@nvidia.comSigned-off-by: Leon Romanovsky * master: (1688 commits) Linux 7.0-rc6 ... List of files: /linux/rust/kernel/cpufreq.rs

6fdfd24017756bbe27ccc786051e97f3bf0c3d62 - Merge drm/drm-fixes into drm-misc-next-fixes

Mon, 30 Mar 2026 10:05:36 +0200

Merge drm/drm-fixes into drm-misc-next-fixesBoris needs 7.0-rc6 for a shmem helper fix.Signed-off-by: Maxime Ripard List of files: /linux/rust/kernel/cpufreq.rs

13c072b8e91a5ccb5855ca1ba6fe3ea467dbf94d - BackMerge tag 'v7.0-rc4' into drm-next

Thu, 26 Mar 2026 00:41:26 +0100

BackMerge tag 'v7.0-rc4' into drm-nextLinux 7.0-rc4Needed for rust tree.Signed-off-by: Dave Airlie List of files: /linux/rust/kernel/cpufreq.rs

54fcc7f6ec3944ae7c1b0246a999744e33839cdb - Merge tag 'perf-tools-fixes-for-v7.0-2-2026-03-23' into perf-tools-next

Wed, 25 Mar 2026 08:06:23 +0100

Merge tag 'perf-tools-fixes-for-v7.0-2-2026-03-23' into perf-tools-nextTo get the various fixes for v7.0.Signed-off-by: Namhyung Kim List of files: /linux/rust/kernel/cpufreq.rs

dc1d9408c961c1c4d4b3b99a1d9390c17e13de71 - Merge commit 'f35dbac6942171dc4ce9398d1d216a59224590a9' into trace/ring-buffer/core

Wed, 25 Mar 2026 03:19:13 +0100

Merge commit 'f35dbac6942171dc4ce9398d1d216a59224590a9' into trace/ring-buffer/coreThe commit f35dbac69421 ("ring-buffer: Fix to update per-subbuf entries ofpersistent ring buffer") was a fix and merged upstream. It is needed forsome other work in the ring buffer. The current branch has the remotebuffer code that is shared with the Arm64 subsystem and can't be rebased.Merge in the upstream commit to allow continuing of the ring buffer work.Signed-off-by: Steven Rostedt (Google) List of files: /linux/rust/kernel/cpufreq.rs

6872c84dc6f5d18e02ebc34b257f4152895e236c - Merge 7.0-rc5 into tty-next

Mon, 23 Mar 2026 09:59:16 +0100

Merge 7.0-rc5 into tty-nextWe need the tty/serial fixes in here as well.Signed-off-by: Greg Kroah-Hartman List of files: /linux/rust/kernel/cpufreq.rs

bfec8e88ff6022b056615ec71506703e7e54de82 - Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 7.0-rc5

Mon, 23 Mar 2026 03:31:37 +0100

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 7.0-rc5Cross-merge BPF and other fixes after downstream PR.Minor conflicts in: tools/testing/selftests/bpf/progs/exceptions_fail.c tools/testing/selftests/bpf/progs/verifier_bounds.cSigned-off-by: Alexei Starovoitov List of files: /linux/rust/kernel/cpufreq.rs