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authorPhilippe Longepe <philippe.longepe@linux.intel.com>2016-03-06 10:34:06 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-03-11 02:04:58 +0300
commit8fa520af50817d5f30d293f507c937f561b3e6b9 (patch)
tree8b6bf612d99d0b3ab9b8da0dae478b7bddd63cfc /drivers/cpufreq
parent7349ec0470b62820ae226e30770b9d84a53ced9d (diff)
downloadlinux-8fa520af50817d5f30d293f507c937f561b3e6b9.tar.xz
intel_pstate: Remove freq calculation from intel_pstate_calc_busy()
Use a helper function to compute the average pstate and call it only where it is needed (only when tracing or in intel_pstate_get). Signed-off-by: Philippe Longepe <philippe.longepe@linux.intel.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq')
-rw-r--r--drivers/cpufreq/intel_pstate.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 95cc21713bb4..4acb904908d1 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -881,12 +881,6 @@ static inline void intel_pstate_calc_busy(struct cpudata *cpu)
core_pct = int_tofp(sample->aperf) * int_tofp(100);
core_pct = div64_u64(core_pct, int_tofp(sample->mperf));
- sample->freq = fp_toint(
- mul_fp(int_tofp(
- cpu->pstate.max_pstate_physical *
- cpu->pstate.scaling / 100),
- core_pct));
-
sample->core_pct_busy = (int32_t)core_pct;
}
@@ -920,6 +914,12 @@ static inline void intel_pstate_sample(struct cpudata *cpu, u64 time)
cpu->prev_tsc = tsc;
}
+static inline int32_t get_avg_frequency(struct cpudata *cpu)
+{
+ return div64_u64(cpu->pstate.max_pstate_physical * cpu->sample.aperf *
+ cpu->pstate.scaling, cpu->sample.mperf);
+}
+
static inline int32_t get_target_pstate_use_cpu_load(struct cpudata *cpu)
{
struct sample *sample = &cpu->sample;
@@ -1015,7 +1015,7 @@ static inline void intel_pstate_adjust_busy_pstate(struct cpudata *cpu)
sample->mperf,
sample->aperf,
sample->tsc,
- sample->freq);
+ get_avg_frequency(cpu));
}
static void intel_pstate_update_util(struct update_util_data *data, u64 time,
@@ -1104,7 +1104,7 @@ static unsigned int intel_pstate_get(unsigned int cpu_num)
if (!cpu)
return 0;
sample = &cpu->sample;
- return sample->freq;
+ return get_avg_frequency(cpu);
}
static int intel_pstate_set_policy(struct cpufreq_policy *policy)