More power management updates for 7.3-rc1

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- Fix a kernel panic during PMU unbind in the intel_rapl power capping
    driver and sign-extend the PMU delta on counter wraparound in it to
    avoid misreporting energy (Sumeet Pawnikar and Yifan Li)
 
  - Unblock runtime PM when device prepare fails that was not done by
    mistake (Shibo Zhu)
 
  - Fix possible rate limit overflow on 32-bit systems in the schedutil
    cpufreq governor (Hui Su)
 
  - Consolidate HWP P-states initialization in the intel_pstate cpufreq
    driver and make that driver avoid using the DESIRED_PERF HWP hint
    when the Dynamic Efficiency Control (DEC) is enabled in the processor
    to avoid inconsistent behavior (Rafael Wysocki)
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Merge tag 'pm-7.3-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more power management updates from Rafael Wysocki:
 "These fix two issues in the intel_rapl power capping driver, fix a
  potential issue in the schedutil cpufreq governor on 32-bit systems,
  fix a runtime PM issue related to failing system suspend, and update
  the intel_pstate cpufreq driver:

   - Fix a kernel panic during PMU unbind in the intel_rapl power
     capping driver and sign-extend the PMU delta on counter wraparound
     in it to avoid misreporting energy (Sumeet Pawnikar and Yifan Li)

   - Unblock runtime PM when device prepare fails that was not done by
     mistake (Shibo Zhu)

   - Fix possible rate limit overflow on 32-bit systems in the schedutil
     cpufreq governor (Hui Su)

   - Consolidate HWP P-states initialization in the intel_pstate cpufreq
     driver and make that driver avoid using the DESIRED_PERF HWP hint
     when the Dynamic Efficiency Control (DEC) is enabled in the
     processor to avoid inconsistent behavior (Rafael Wysocki)"

* tag 'pm-7.3-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  powercap: intel_rapl: Fix kernel panic during PMU unbind
  PM: sleep: Unblock runtime PM when device prepare fails
  powercap: intel_rapl: Sign-extend the PMU delta on counter wraparound
  cpufreq: intel_pstate: Avoid using DESIRED_PERF when DEC is enabled
  cpufreq: intel_pstate: Consolidate HWP P-states initialization
  cpufreq: schedutil: Fix rate limit overflow

...

This commit is contained in:

Linus Torvalds 2026-08-26 14:13:26 -07:00

parent 3382bfbca5 76854b339b

commit 85671b807f

4 changed files with 90 additions and 67 deletions

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1

drivers/base/power/main.c

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126

drivers/cpufreq/intel_pstate.c

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15

drivers/powercap/intel_rapl_common.c

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15

kernel/sched/cpufreq_schedutil.c

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