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drm/i915: Show support for accurate sw PMU busyness tracking

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Expose whether or not we support the PMU software tracking in our
scheduler capabilities, so userspace can query at runtime.

v2: Use I915_SCHEDULER_CAP_ENGINE_BUSY_STATS for a less ambiguous
capability name.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190703143702.11339-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2019-07-03 15:37:02 +01:00
parent 0c159ffef6
commit bf73fc0fa9
3 changed files with 6 additions and 6 deletions
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4
drivers/gpu/drm/i915/i915_pmu.c
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@@ -102,10 +102,8 @@ static bool pmu_needs_timer(struct drm_i915_private *i915, bool gpu_active)
/*
* Also there is software busyness tracking available we do not
* need the timer for I915_SAMPLE_BUSY counter.
*
* Use RCS as proxy for all engines.
*/
else if (intel_engine_supports_stats(i915->engine[RCS0]))
else if (i915->caps.scheduler & I915_SCHEDULER_CAP_ENGINE_BUSY_STATS)
enable &= ~BIT(I915_SAMPLE_BUSY);
/*