diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-10-14 15:18:18 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-10-17 09:19:57 +0300 |
| commit | 0853695c3ba46f97dfc0b5885f7b7e640ca212dd (patch) | |
| tree | 6c8c3cbeb836094cb0e45b60a19c7e4419a3f4c2 /drivers/gpu/drm/msm/msm_atomic.c | |
| parent | 1dfdb0ed34b28b086ffc1f9fb9f538ab60298029 (diff) | |
| download | linux-0853695c3ba46f97dfc0b5885f7b7e640ca212dd.tar.xz | |
drm: Add reference counting to drm_atomic_state
drm_atomic_state has a complicated single owner model that tracks the
single reference from allocation through to destruction on another
thread - or perhaps on a local error path. We can simplify this tracking
by using reference counting (at a cost of a few more atomics). This is
even more beneficial when the lifetime of the state becomes more
convoluted than being passed to a single worker thread for the commit.
v2: Double check !intel atomic_commit functions for missing gets
v3: Update kerneldocs
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161014121833.439-27-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/msm/msm_atomic.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_atomic.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c index 73bae382eac3..db193f835298 100644 --- a/drivers/gpu/drm/msm/msm_atomic.c +++ b/drivers/gpu/drm/msm/msm_atomic.c @@ -141,7 +141,7 @@ static void complete_commit(struct msm_commit *c, bool async) kms->funcs->complete_commit(kms, state); - drm_atomic_state_free(state); + drm_atomic_state_put(state); commit_destroy(c); } @@ -256,6 +256,7 @@ int msm_atomic_commit(struct drm_device *dev, * current layout. */ + drm_atomic_state_get(state); if (nonblock) { queue_work(priv->atomic_wq, &c->work); return 0; |