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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-03-28 00:11:53 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-03-28 23:12:14 +0200 |
| commit | 694cb173475a048a05daebf27cc8fdb7865c158b (patch) | |
| tree | 8c447a2f29340a0da3bd9149ea80f0c3dde6b40b /drivers/cpufreq | |
| parent | 7aec5b50e97dd3e2e6ad8a87ccfd62ba8f49a105 (diff) | |
| download | linux-stable-694cb173475a048a05daebf27cc8fdb7865c158b.tar.gz linux-stable-694cb173475a048a05daebf27cc8fdb7865c158b.tar.bz2 linux-stable-694cb173475a048a05daebf27cc8fdb7865c158b.zip | |
cpufreq: intel_pstate: Skip unnecessary PID resets on init
PID controller parameters only need to be initialized if the
get_target_pstate_use_performance() P-state selection routine
is going to be used. It is not necessary to initialize them
otherwise, so don't do that.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/intel_pstate.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index b631ab02f170..ee61db93163c 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -1911,12 +1911,12 @@ static int intel_pstate_init_cpu(unsigned int cpunum) intel_pstate_disable_ee(cpunum); intel_pstate_hwp_enable(cpu); + } else if (pstate_funcs.get_target_pstate == get_target_pstate_use_performance) { + intel_pstate_pid_reset(cpu); } intel_pstate_get_cpu_pstates(cpu); - intel_pstate_pid_reset(cpu); - pr_debug("controlling: cpu %d\n", cpunum); return 0; |