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

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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
This commit is contained in:
Chris Wilson 2019-11-09 10:53:56 +00:00
parent e8887bb3eb
commit e88866ef02
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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@ -908,8 +908,8 @@ create_event_attributes(struct i915_pmu *pmu)
const char *name; const char *name;
const char *unit; const char *unit;
} events[] = { } events[] = {
__event(I915_PMU_ACTUAL_FREQUENCY, "actual-frequency", "MHz"), __event(I915_PMU_ACTUAL_FREQUENCY, "actual-frequency", "M"),
__event(I915_PMU_REQUESTED_FREQUENCY, "requested-frequency", "MHz"), __event(I915_PMU_REQUESTED_FREQUENCY, "requested-frequency", "M"),
__event(I915_PMU_INTERRUPTS, "interrupts", NULL), __event(I915_PMU_INTERRUPTS, "interrupts", NULL),
__event(I915_PMU_RC6_RESIDENCY, "rc6-residency", "ns"), __event(I915_PMU_RC6_RESIDENCY, "rc6-residency", "ns"),
}; };