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drm/i915/pmu: "Frequency" is reported as accumulated cycles 

We report "frequencies" (actual-frequency, requested-frequency) as the
number of accumulated cycles so that the average frequency over that
period may be determined by the user. This means the units we report to
the user are Mcycles (or just M), not MHz.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191109105356.5273-1-chris@chris-wilson.co.uk
(cherry picked from commit e88866ef02)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
This commit is contained in:
Chris Wilson 2019-11-09 10:53:56 +00:00 committed by Joonas Lahtinen
parent d231c15aff
commit a7d87b70d6
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/i915_pmu.c
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@ -878,8 +878,8 @@ create_event_attributes(struct i915_pmu *pmu)
const char *name;
const char *unit;
} events[] = {
__event(I915_PMU_ACTUAL_FREQUENCY, "actual-frequency", "MHz"),
__event(I915_PMU_REQUESTED_FREQUENCY, "requested-frequency", "MHz"),
__event(I915_PMU_ACTUAL_FREQUENCY, "actual-frequency", "M"),
__event(I915_PMU_REQUESTED_FREQUENCY, "requested-frequency", "M"),
__event(I915_PMU_INTERRUPTS, "interrupts", NULL),
__event(I915_PMU_RC6_RESIDENCY, "rc6-residency", "ns"),
};