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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-12-18 03:07:56 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-12-18 14:09:15 +0300 |
| commit | edb1ecad77d44e21a56e9b1bba747174379b2b54 (patch) | |
| tree | 88ec318815dac7d9378466dc82d5b37f8856c63e /drivers/gpu/drm/i915/i915_pmu.c | |
| parent | 54d7195f8c64c83a13bd343e349b1bbf158c8aad (diff) | |
| download | linux-edb1ecad77d44e21a56e9b1bba747174379b2b54.tar.xz | |
drm/i915/pmu: Skip sampling engines if gt is asleep
If the whole GT is asleep, we know that each engine must also be asleep
and so we can quickly return without checking them all.
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/20191218000756.3475668-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_pmu.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_pmu.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c index 5f2adfbf85be..00325471be90 100644 --- a/drivers/gpu/drm/i915/i915_pmu.c +++ b/drivers/gpu/drm/i915/i915_pmu.c @@ -312,6 +312,9 @@ engines_sample(struct intel_gt *gt, unsigned int period_ns) if ((i915->pmu.enable & ENGINE_SAMPLE_MASK) == 0) return; + if (!intel_gt_pm_is_awake(gt)) + return; + for_each_engine(engine, gt, id) { struct intel_engine_pmu *pmu = &engine->pmu; spinlock_t *mmio_lock; |