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Merge tag 'pm-5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

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Pull power management fixes from Rafael Wysocki:
 "These fix a few issues related to running intel_pstate in the passive
  mode with HWP enabled, correct the handling of the max_cstate module
  parameter in intel_idle and make a few janitorial changes.

  Specifics:

   - Modify Kconfig to prevent configuring either the "conservative" or
     the "ondemand" governor as the default cpufreq governor if
     intel_pstate is selected, in which case "schedutil" is the default
     choice for the default governor setting (Rafael Wysocki).

   - Modify the cpufreq core, intel_pstate and the schedutil governor to
     avoid missing updates of the HWP max limit when intel_pstate
     operates in the passive mode with HWP enabled (Rafael Wysocki).

   - Fix max_cstate module parameter handling in intel_idle for
     processor models with C-state tables coming from ACPI (Chen Yu).

   - Clean up assorted pieces of power management code (Jackie Zamow,
     Tom Rix, Zhang Qilong)"

* tag 'pm-5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: schedutil: Always call driver if CPUFREQ_NEED_UPDATE_LIMITS is set
  cpufreq: Introduce cpufreq_driver_test_flags()
  cpufreq: speedstep: remove unneeded semicolon
  PM: sleep: fix typo in kernel/power/process.c
  intel_idle: Fix max_cstate for processor models without C-state tables
  cpufreq: intel_pstate: Avoid missing HWP max updates in passive mode
  cpufreq: Introduce CPUFREQ_NEED_UPDATE_LIMITS driver flag
  cpufreq: Avoid configuring old governors as default with intel_pstate
  cpufreq: e_powersaver: remove unreachable break
This commit is contained in:
Linus Torvalds
2020-10-30 12:45:04 -07:00
parent 88098fd61b dea47cf45a
commit 8843f40550
10 changed files with 39 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel/power/process.c
+1 -1
View File
@@ -146,7 +146,7 @@ int freeze_processes(void)
BUG_ON(in_atomic());
/*
* Now that the whole userspace is frozen we need to disbale
* Now that the whole userspace is frozen we need to disable
* the OOM killer to disallow any further interference with
* killable tasks. There is no guarantee oom victims will
* ever reach a point they go away we have to wait with a timeout.
kernel/sched/cpufreq_schedutil.c
+4 -2
View File
@@ -102,7 +102,8 @@ static bool sugov_should_update_freq(struct sugov_policy *sg_policy, u64 time)
static bool sugov_update_next_freq(struct sugov_policy *sg_policy, u64 time,
unsigned int next_freq)
{
if (sg_policy->next_freq == next_freq)
if (sg_policy->next_freq == next_freq &&
!cpufreq_driver_test_flags(CPUFREQ_NEED_UPDATE_LIMITS))
return false;
sg_policy->next_freq = next_freq;
@@ -161,7 +162,8 @@ static unsigned int get_next_freq(struct sugov_policy *sg_policy,
freq = map_util_freq(util, freq, max);
if (freq == sg_policy->cached_raw_freq && !sg_policy->need_freq_update)
if (freq == sg_policy->cached_raw_freq && !sg_policy->need_freq_update &&
!cpufreq_driver_test_flags(CPUFREQ_NEED_UPDATE_LIMITS))
return sg_policy->next_freq;
sg_policy->need_freq_update = false;