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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
(cherry picked from commit e88866ef02)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
(cherry picked from commit a7d87b70d6)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Chris Wilson 2019-11-09 10:53:56 +00:00 committed by Rodrigo Vivi
parent 1aa4df7e41
commit add3eeed36
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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@ -843,8 +843,8 @@ 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"),
};