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authorTvrtko Ursulin <tvrtko.ursulin@intel.com>2017-11-21 18:18:46 +0000
committerTvrtko Ursulin <tvrtko.ursulin@intel.com>2017-11-22 11:25:00 +0000
commitfeff0dc6cdc527f8a6fd170d8de7966f56890fc0 (patch)
treed161e7caedcb4e0b7bbb65159cd1ef417acc8f01 /drivers/gpu/drm/i915/i915_gem.c
parentb46a33e271ed81bd765c632b972c49d5b44729c7 (diff)
drm/i915/pmu: Suspend sampling when GPU is idle
If only a subset of events is enabled we can afford to suspend the sampling timer when the GPU is idle and so save some cycles and power. v2: Rebase and limit timer even more. v3: Rebase. v4: Rebase. v5: Skip action if perf PMU failed to register. v6: Checkpatch cleanup. v7: * Add a common helper to start the timer if needed. (Chris Wilson) * Add comment explaining bitwise logic in pmu_needs_timer. v8: Fix some comments styles. (Chris Wilson) v9: Rebase. v10: Move function declarations to i915_pmu.h. v11: Rename functions to i915_pmu_gt_(un)parked. (Chris Wilson) Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20171121181852.16128-3-tvrtko.ursulin@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem.c')
-rw-r--r--drivers/gpu/drm/i915/i915_gem.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 792e6dc7e19b..21ca680e9e63 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -3372,6 +3372,7 @@ i915_gem_idle_work_handler(struct work_struct *work)
intel_engines_park(dev_priv);
i915_gem_timelines_mark_idle(dev_priv);
+ i915_pmu_gt_parked(dev_priv);
GEM_BUG_ON(!dev_priv->gt.awake);
dev_priv->gt.awake = false;