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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-09-04 00:05:22 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-09-04 00:05:22 +0200 |
| commit | 08a10002bed151f6df201715adb80c1c5e7fe7ca (patch) | |
| tree | a9d53ec2b6f5b1921a614f2d4bd70fb6c3a0d42f /include | |
| parent | Merge branch 'pm-cpufreq' (diff) | |
| parent | cpufreq: schedutil: Always process remote callback with slow switching (diff) | |
| download | linux-08a10002bed151f6df201715adb80c1c5e7fe7ca.tar.xz linux-08a10002bed151f6df201715adb80c1c5e7fe7ca.zip | |
Merge branch 'pm-cpufreq-sched'
* pm-cpufreq-sched:
cpufreq: schedutil: Always process remote callback with slow switching
cpufreq: schedutil: Don't restrict kthread to related_cpus unnecessarily
cpufreq: Return 0 from ->fast_switch() on errors
cpufreq: Simplify cpufreq_can_do_remote_dvfs()
cpufreq: Process remote callbacks from any CPU if the platform permits
sched: cpufreq: Allow remote cpufreq callbacks
cpufreq: schedutil: Use unsigned int for iowait boost
cpufreq: schedutil: Make iowait boost more energy efficient
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cpufreq.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 5f40522ec98c..537ff842ff73 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -127,6 +127,15 @@ struct cpufreq_policy { */ unsigned int transition_delay_us; + /* + * Remote DVFS flag (Not added to the driver structure as we don't want + * to access another structure from scheduler hotpath). + * + * Should be set if CPUs can do DVFS on behalf of other CPUs from + * different cpufreq policies. + */ + bool dvfs_possible_from_any_cpu; + /* Cached frequency lookup from cpufreq_driver_resolve_freq. */ unsigned int cached_target_freq; int cached_resolved_idx; @@ -562,6 +571,17 @@ struct governor_attr { size_t count); }; +static inline bool cpufreq_can_do_remote_dvfs(struct cpufreq_policy *policy) +{ + /* + * Allow remote callbacks if: + * - dvfs_possible_from_any_cpu flag is set + * - the local and remote CPUs share cpufreq policy + */ + return policy->dvfs_possible_from_any_cpu || + cpumask_test_cpu(smp_processor_id(), policy->cpus); +} + /********************************************************************* * FREQUENCY TABLE HELPERS * *********************************************************************/ |