diff options
| author | Dirk Brandewie <dirk.j.brandewie@intel.com> | 2014-02-12 10:01:03 -0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-02-13 02:11:18 +0100 |
| commit | 709c078e176bd47227e89bb34de7c64b57aaaeab (patch) | |
| tree | b7d11870565827e4fb6f56a2e7110f8889c42b87 | |
| parent | fcb6a15c2e7e76d493e6f91ea889ab40e1c643a4 (diff) | |
intel_pstate: Remove energy reporting from pstate_sample tracepoint
Remove the reporting of energy since it does not provide any useful
information about the state of the driver and will be a maintainance
headache going forward since the RAPL energy units register is not
architectural and subject to change between micro-architectures
References: https://bugzilla.kernel.org/show_bug.cgi?id=69831
Fixes: b69880f9ccf7 (intel_pstate: Add trace point to report internal state.)
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/cpufreq/intel_pstate.c | 9 | ||||
| -rw-r--r-- | include/trace/events/power.h | 7 |
2 files changed, 1 insertions, 15 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 79606f473f4..c788abf1c45 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -51,8 +51,6 @@ static inline int32_t div_fp(int32_t x, int32_t y) return div_s64((int64_t)x << FRAC_BITS, (int64_t)y); } -static u64 energy_divisor; - struct sample { int32_t core_pct_busy; u64 aperf; @@ -630,12 +628,10 @@ static void intel_pstate_timer_func(unsigned long __data) { struct cpudata *cpu = (struct cpudata *) __data; struct sample *sample; - u64 energy; intel_pstate_sample(cpu); sample = &cpu->samples[cpu->sample_ptr]; - rdmsrl(MSR_PKG_ENERGY_STATUS, energy); intel_pstate_adjust_busy_pstate(cpu); @@ -644,7 +640,6 @@ static void intel_pstate_timer_func(unsigned long __data) cpu->pstate.current_pstate, sample->mperf, sample->aperf, - div64_u64(energy, energy_divisor), sample->freq); intel_pstate_set_sample_time(cpu); @@ -926,7 +921,6 @@ static int __init intel_pstate_init(void) int cpu, rc = 0; const struct x86_cpu_id *id; struct cpu_defaults *cpu_info; - u64 units; if (no_load) return -ENODEV; @@ -960,9 +954,6 @@ static int __init intel_pstate_init(void) if (rc) goto out; - rdmsrl(MSR_RAPL_POWER_UNIT, units); - energy_divisor = 1 << ((units >> 8) & 0x1f); /* bits{12:8} */ - intel_pstate_debug_expose_params(); intel_pstate_sysfs_expose_params(); diff --git a/include/trace/events/power.h b/include/trace/events/power.h index 9e9475c85de..e5bf9a76f16 100644 --- a/include/trace/events/power.h +++ b/include/trace/events/power.h @@ -42,7 +42,6 @@ TRACE_EVENT(pstate_sample, u32 state, u64 mperf, u64 aperf, - u32 energy, u32 freq ), @@ -51,7 +50,6 @@ TRACE_EVENT(pstate_sample, state, mperf, aperf, - energy, freq ), @@ -61,7 +59,6 @@ TRACE_EVENT(pstate_sample, __field(u32, state) __field(u64, mperf) __field(u64, aperf) - __field(u32, energy) __field(u32, freq) ), @@ -72,17 +69,15 @@ TRACE_EVENT(pstate_sample, __entry->state = state; __entry->mperf = mperf; __entry->aperf = aperf; - __entry->energy = energy; __entry->freq = freq; ), - TP_printk("core_busy=%lu scaled=%lu state=%lu mperf=%llu aperf=%llu energy=%lu freq=%lu ", + TP_printk("core_busy=%lu scaled=%lu state=%lu mperf=%llu aperf=%llu freq=%lu ", (unsigned long)__entry->core_busy, (unsigned long)__entry->scaled_busy, (unsigned long)__entry->state, (unsigned long long)__entry->mperf, (unsigned long long)__entry->aperf, - (unsigned long)__entry->energy, (unsigned long)__entry->freq ) |