| commit | edee52c927ef30d5b0ae871375567f3484f23cee | [log] [tgz] |
|---|---|---|
| author | Chris Wilson <chris@chris-wilson.co.uk> | Mon Mar 23 09:28:37 2020 +0000 |
| committer | Chris Wilson <chris@chris-wilson.co.uk> | Mon Mar 23 12:51:19 2020 +0000 |
| tree | 75360a8c8992fd12b85aa187ce1a7d245570fe78 | |
| parent | e9037e7f9a1681fca32e45e82d7b7f714b49a9e6 [diff] |
drm/i915/gt: Delay release of engine-pm after last retirement Keep the engine-pm awake until the next jiffie, to avoid immediate ping-pong under moderate load. (Forcing the idle barrier excerbates the moderate load, dramatically increasing the driver overhead.) On the other hand, delaying the idle-barrier slightly incurs longer rc6-off and so more power consumption. Closes: https://gitlab.freedesktop.org/drm/intel/issues/848 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200323092841.22240-4-chris@chris-wilson.co.uk