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| author |   Rob Clark <robdclark@chromium.org> | 2020-10-23 09:51:15 -0700 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2020-11-04 16:00:56 -0800 |
| commit | 77c406038e830a4b6219b14a116cd2a6ac9f4908 (patch) | |
| tree | 50a5d003abeab7443938590e20904ba885158978 /drivers/gpu/drm/msm/msm_ringbuffer.h | |
| parent | drm/msm: Add priv->mm_lock to protect active/inactive lists (diff) | |
| download | linux-dev-77c406038e830a4b6219b14a116cd2a6ac9f4908.tar.xz linux-dev-77c406038e830a4b6219b14a116cd2a6ac9f4908.zip | |
drm/msm: Document and rename preempt_lock
Before adding another lock, give ring->lock a more descriptive name.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/msm/msm_ringbuffer.h')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_ringbuffer.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/msm_ringbuffer.h b/drivers/gpu/drm/msm/msm_ringbuffer.h index 0987d6bf848c..4956d1bc5d0e 100644 --- a/drivers/gpu/drm/msm/msm_ringbuffer.h +++ b/drivers/gpu/drm/msm/msm_ringbuffer.h @@ -46,7 +46,12 @@ struct msm_ringbuffer { struct msm_rbmemptrs *memptrs; uint64_t memptrs_iova; struct msm_fence_context *fctx; - spinlock_t lock; + + /* + * preempt_lock protects preemption and serializes wptr updates against + * preemption. Can be aquired from irq context. + */ + spinlock_t preempt_lock; }; struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int id, |