drm/msm: async commit support

Browse source

Now that flush/wait/complete is decoupled from the "synchronous" part of
atomic commit_tail(), add support to defer flush to a timer that expires
shortly before vblank for async commits.  In this way, multiple atomic
commits (for example, cursor updates) can be coalesced into a single
flush at the end of the frame.

v2: don't hold lock over ->wait_flush(), to avoid locking interaction
    that was causing fps drop when combining page flips or non-async
    atomic commits and lots of legacy cursor updates

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Sean Paul <sean@poorly.run>

...

This commit is contained in:

Rob Clark 2019-08-29 09:45:16 -07:00

parent e35a29d5c4

commit 2d99ced787

4 changed files with 210 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

156

drivers/gpu/drm/msm/msm_atomic.c

View file

1

drivers/gpu/drm/msm/msm_drv.c

View file

4

drivers/gpu/drm/msm/msm_drv.h

View file

50

drivers/gpu/drm/msm/msm_kms.h

View file