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authorDoug Smythies <doug.smythies@gmail.com>2017-08-08 14:05:12 -0700
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-08-11 01:25:53 +0200
commitc587c79f90632df59c61383c6abebb2e07a81911 (patch)
tree71e8938a77a416661fe6544abd282a964601fda1 /drivers
parentaae4e7a8bc44722fe70d58920a36916b1043195e (diff)
downloadlinux-c587c79f90632df59c61383c6abebb2e07a81911.tar.bz2
cpufreq: intel_pstate: report correct CPU frequencies during trace
The intel_pstate CPU frequency scaling driver has always calculated CPU frequency incorrectly. Recent changes have eliminted most of the issues, however the frequency reported in the trace buffer, if used, is incorrect. It remains desireable that cpu->pstate.scaling still be a nice round number for things such as when setting max and min frequencies. So the proposal is to just fix the reported frequency in the trace data. Fixes what remains of [1]. Link: https://bugzilla.kernel.org/show_bug.cgi?id=96521 # [1] Signed-off-by: Doug Smythies <dsmythies@telus.net> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/cpufreq/intel_pstate.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 0566455f233e..65ee4fcace1f 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -1613,8 +1613,7 @@ static inline bool intel_pstate_sample(struct cpudata *cpu, u64 time)
static inline int32_t get_avg_frequency(struct cpudata *cpu)
{
- return mul_ext_fp(cpu->sample.core_avg_perf,
- cpu->pstate.max_pstate_physical * cpu->pstate.scaling);
+ return mul_ext_fp(cpu->sample.core_avg_perf, cpu_khz);
}
static inline int32_t get_avg_pstate(struct cpudata *cpu)