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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-02-10 16:10:44 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-02-10 16:10:44 +0100 |
| commit | 7bc95d4ef1033af808cb0714081cb45cd4ee5669 (patch) | |
| tree | d43620fa7ff300ec8422c8eddc38014e902312bb /Documentation | |
| parent | f52386892fb17b4a70a7a73240c0f04a0a6011a6 (diff) | |
| parent | c488ea461359483976ff7d4838cce5c0138c6b3e (diff) | |
Merge branch 'pm-cpufreq'
* pm-cpufreq: (46 commits)
intel_pstate: provide option to only use intel_pstate with HWP
cpufreq-dt: Drop unnecessary check before cpufreq_cooling_unregister() invocation
cpufreq: Create for_each_governor()
cpufreq: Create for_each_policy()
cpufreq: Drop cpufreq_disabled() check from cpufreq_cpu_{get|put}()
cpufreq: Set cpufreq_cpu_data to NULL before putting kobject
intel_pstate: honor user space min_perf_pct override on resume
intel_pstate: respect cpufreq policy request
intel_pstate: Add num_pstates to sysfs
intel_pstate: expose turbo range to sysfs
intel_pstate: Add support for SkyLake
cpufreq: stats: drop unnecessary locking
cpufreq: stats: don't update stats on false notifiers
cpufreq: stats: don't update stats from show_trans_table()
cpufreq: stats: time_in_state can't be NULL in cpufreq_stats_update()
cpufreq: stats: create sysfs group once we are ready
cpufreq: remove CPUFREQ_UPDATE_POLICY_CPU notifications
cpufreq: stats: drop 'cpu' field of struct cpufreq_stats
cpufreq: Remove (now) unused 'last_cpu' from struct cpufreq_policy
cpufreq: stats: rename 'struct cpufreq_stats' objects as 'stats'
...
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/cpu-freq/intel-pstate.txt | 8 | ||||
| -rw-r--r-- | Documentation/kernel-parameters.txt | 3 |
2 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/cpu-freq/intel-pstate.txt b/Documentation/cpu-freq/intel-pstate.txt index 765d7fc0e692..655750743fb0 100644 --- a/Documentation/cpu-freq/intel-pstate.txt +++ b/Documentation/cpu-freq/intel-pstate.txt @@ -37,6 +37,14 @@ controlling P state selection. These files have been added to no_turbo: limits the driver to selecting P states below the turbo frequency range. + turbo_pct: displays the percentage of the total performance that + is supported by hardware that is in the turbo range. This number + is independent of whether turbo has been disabled or not. + + num_pstates: displays the number of pstates that are supported + by hardware. This number is independent of whether turbo has + been disabled or not. + For contemporary Intel processors, the frequency is controlled by the processor itself and the P-states exposed to software are related to performance levels. The idea that frequency can be set to a single diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 176d4fe4f076..f06f1f609cb7 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1470,6 +1470,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted. no_hwp Do not enable hardware P state control (HWP) if available. + hwp_only + Only load intel_pstate on systems which support + hardware P state control (HWP) if available. intremap= [X86-64, Intel-IOMMU] on enable Interrupt Remapping (default) |