drm/v3d: Drop the wait for L2T flush to complete.

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According to Dave, once you've started an L2T flush, all L2T accesses
will be blocked until the flush completes.  This fixes a consistent
3-4ms stall between the ioctl and running the job, and 3DMMES Taiji
goes from 27fps to 110fps.

v2: Leave a note about why we don't need to wait for completion.

Signed-off-by: Eric Anholt <eric@anholt.net>
Fixes: 57692c94dc ("drm/v3d: Introduce a new DRM driver for Broadcom V3D V3.x+")
Reviewed-by: Dave Emett <david.emett@broadcom.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181203222438.25417-4-eric@anholt.net

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This commit is contained in:

Eric Anholt 2018-12-03 14:24:36 -08:00

parent 2e6dc3bd80

commit 51c1b6f9eb

1 changed files with 4 additions and 4 deletions

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drivers/gpu/drm/v3d/v3d_gem.c

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