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cpufreq: intel_pstate: Clarify comment in get_target_pstate_use_performance()

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Make the comment explaining the meaning of the perf_scaled variable
in get_target_pstate_use_performance() more straightforward.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Rafael J. Wysocki 2016-09-30 03:13:34 +02:00
parent f9f4872df6
commit f00593a4bd
1 changed files with 5 additions and 4 deletions
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drivers/cpufreq/intel_pstate.c
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@ -1251,10 +1251,11 @@ static inline int32_t get_target_pstate_use_performance(struct cpudata *cpu)
u64 duration_ns;
/*
* perf_scaled is the average performance during the last sampling
* period scaled by the ratio of the maximum P-state to the P-state
* requested last time (in percent). That measures the system's
* response to the previous P-state selection.
* perf_scaled is the ratio of the average P-state during the last
* sampling period to the P-state requested last time (in percent).
*
* That measures the system's response to the previous P-state
* selection.
*/
max_pstate = cpu->pstate.max_pstate_physical;
current_pstate = cpu->pstate.current_pstate;