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Lines 56-62
static u64 energy_divisor;
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| 56 |
struct sample { |
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struct sample { |
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int32_t core_pct_busy; |
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int32_t core_pct_busy; |
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u64 aperf; |
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u64 aperf; |
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u64 mperf; |
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u64 mperf; |
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unsigned long long tsc; |
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int freq; |
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int freq; |
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}; |
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}; |
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Lines 96-101
struct cpudata {
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u64 prev_aperf; |
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u64 prev_aperf; |
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u64 prev_mperf; |
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u64 prev_mperf; |
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unsigned long long prev_tsc; |
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int sample_ptr; |
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int sample_ptr; |
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struct sample samples[SAMPLE_COUNT]; |
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struct sample samples[SAMPLE_COUNT]; |
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}; |
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}; |
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Lines 548-577
static inline void intel_pstate_calc_busy(struct cpudata *cpu,
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struct sample *sample) |
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struct sample *sample) |
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{ |
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{ |
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u64 core_pct; |
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u64 core_pct; |
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core_pct = div64_u64(int_tofp(sample->aperf * 100), |
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u64 c0_pct; |
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sample->mperf); |
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sample->freq = fp_toint(cpu->pstate.max_pstate * core_pct * 1000); |
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sample->core_pct_busy = core_pct; |
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core_pct = div64_u64(sample->aperf * 100, sample->mperf); |
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c0_pct = div64_u64(sample->mperf * 100, sample->tsc); |
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sample->freq = fp_toint( |
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mul_fp(int_tofp(cpu->pstate.max_pstate), |
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int_tofp(core_pct * 1000))); |
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sample->core_pct_busy = mul_fp(int_tofp(core_pct), |
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div_fp(int_tofp(c0_pct + 1), int_tofp(100))); |
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} |
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} |
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static inline void intel_pstate_sample(struct cpudata *cpu) |
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static inline void intel_pstate_sample(struct cpudata *cpu) |
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{ |
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{ |
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u64 aperf, mperf; |
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u64 aperf, mperf; |
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unsigned long long tsc; |
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rdmsrl(MSR_IA32_APERF, aperf); |
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rdmsrl(MSR_IA32_APERF, aperf); |
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rdmsrl(MSR_IA32_MPERF, mperf); |
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rdmsrl(MSR_IA32_MPERF, mperf); |
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tsc = native_read_tsc(); |
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cpu->sample_ptr = (cpu->sample_ptr + 1) % SAMPLE_COUNT; |
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cpu->sample_ptr = (cpu->sample_ptr + 1) % SAMPLE_COUNT; |
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cpu->samples[cpu->sample_ptr].aperf = aperf; |
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cpu->samples[cpu->sample_ptr].aperf = aperf; |
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cpu->samples[cpu->sample_ptr].mperf = mperf; |
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cpu->samples[cpu->sample_ptr].mperf = mperf; |
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cpu->samples[cpu->sample_ptr].tsc = tsc; |
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cpu->samples[cpu->sample_ptr].aperf -= cpu->prev_aperf; |
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cpu->samples[cpu->sample_ptr].aperf -= cpu->prev_aperf; |
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cpu->samples[cpu->sample_ptr].mperf -= cpu->prev_mperf; |
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cpu->samples[cpu->sample_ptr].mperf -= cpu->prev_mperf; |
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cpu->samples[cpu->sample_ptr].tsc -= cpu->prev_tsc; |
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intel_pstate_calc_busy(cpu, &cpu->samples[cpu->sample_ptr]); |
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intel_pstate_calc_busy(cpu, &cpu->samples[cpu->sample_ptr]); |
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cpu->prev_aperf = aperf; |
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cpu->prev_aperf = aperf; |
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cpu->prev_mperf = mperf; |
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cpu->prev_mperf = mperf; |
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cpu->prev_tsc = tsc; |
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} |
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} |
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static inline void intel_pstate_set_sample_time(struct cpudata *cpu) |
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static inline void intel_pstate_set_sample_time(struct cpudata *cpu) |
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