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(parent: 8d90009) | patch
drm/nouveau: fix __nouveau_fence_wait performance
authorMarcin Slusarz <marcin.slusarz@gmail.com>
Wed, 9 Mar 2011 13:22:19 +0000 (14:22 +0100)
committerBen Skeggs <bskeggs@redhat.com>
Mon, 14 Mar 2011 06:35:16 +0000 (16:35 +1000)
commite95c00b5dea1963436874a678c8e162586ef1973
tree1ff63be39ccd22175d4fa61683865664181fef38tree | snapshot
parent8d900099db134058314507c5a835e4077bfa7980commit | diff
drm/nouveau: fix __nouveau_fence_wait performance

Commit 7156001d692be441cda60f4731aece0ea3b2c79f ("drm/nouveau: remove
cpu_writers lock") turned on lazy waits. Unfortunately
__nouveau_fence_wait was not optimized for this case and on HZ=100
kernel wasted up to 10 ms per call.

Depending on application, it led to 10-30% FPS regression.

Fix it.

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
drivers/gpu/drm/nouveau/nouveau_fence.c diff | blob | history
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