intel_pstate: Remove sample parameter in intel_pstate_calc_busy

Since commit d37e2b7644 ("intel_pstate: remove unneeded sample buffers")
we use only one sample. So, there is no need to pass the sample
pointer to intel_pstate_calc_busy. Instead, get the pointer from
cpudata. Also, remove the unused SAMPLE_COUNT macro.

While at it, reformat the first line in this function.

Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 4 insertions, 7 deletions

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 099967302bf2..6658bef99352 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -32,8 +32,6 @@
 #include <asm/msr.h>
 #include <asm/cpu_device_id.h>
 
-#define SAMPLE_COUNT            3
-
 #define BYT_RATIOS              0x66a
 #define BYT_VIDS                0x66b
 #define BYT_TURBO_RATIOS        0x66c
@@ -553,14 +551,13 @@ static void intel_pstate_get_cpu_pstates(struct cpudata *cpu)
         intel_pstate_set_pstate(cpu, cpu->pstate.max_pstate);
 }
 
-static inline void intel_pstate_calc_busy(struct cpudata *cpu,
-                                        struct sample *sample)
+static inline void intel_pstate_calc_busy(struct cpudata *cpu)
 {
+        struct sample *sample = &cpu->sample;
         int32_t core_pct;
         int32_t c0_pct;
 
-        core_pct = div_fp(int_tofp((sample->aperf)),
-                        int_tofp((sample->mperf)));
+        core_pct = div_fp(int_tofp(sample->aperf), int_tofp(sample->mperf));
         core_pct = mul_fp(core_pct, int_tofp(100));
         FP_ROUNDUP(core_pct);
 
@@ -592,7 +589,7 @@ static inline void intel_pstate_sample(struct cpudata *cpu)
         cpu->sample.mperf -= cpu->prev_mperf;
         cpu->sample.tsc -= cpu->prev_tsc;
 
-        intel_pstate_calc_busy(cpu, &cpu->sample);
+        intel_pstate_calc_busy(cpu);
 
         cpu->prev_aperf = aperf;
         cpu->prev_mperf = mperf;