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| author | Francisco Jerez <currojerez@riseup.net> | 2010-09-21 20:49:39 +0200 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2010-10-05 09:59:12 +1000 |
| commit | 8ac3891b48906b38db4b153c2d0d55db2ef81aee (patch) | |
| tree | a01cfeb53235f2d112e2f327e52d603b7ef67f11 /drivers/gpu/drm/nouveau/nouveau_fence.c | |
| parent | 2730723bbc4a8b289fa536fc3555e15947da09c1 (diff) | |
| download | lwn-8ac3891b48906b38db4b153c2d0d55db2ef81aee.tar.gz lwn-8ac3891b48906b38db4b153c2d0d55db2ef81aee.zip | |
drm/nouveau: Provide a means to have arbitrary work run on fence completion.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_fence.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_fence.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c b/drivers/gpu/drm/nouveau/nouveau_fence.c index 62f13189698a..fbb2c3b26239 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fence.c +++ b/drivers/gpu/drm/nouveau/nouveau_fence.c @@ -39,6 +39,9 @@ struct nouveau_fence { uint32_t sequence; bool signalled; + + void (*work)(void *priv, bool signalled); + void *priv; }; static inline struct nouveau_fence * @@ -78,6 +81,10 @@ nouveau_fence_update(struct nouveau_channel *chan) sequence = fence->sequence; fence->signalled = true; list_del(&fence->entry); + + if (unlikely(fence->work)) + fence->work(fence->priv, true); + kref_put(&fence->refcount, nouveau_fence_del); if (sequence == chan->fence.sequence_ack) @@ -148,6 +155,25 @@ nouveau_fence_emit(struct nouveau_fence *fence) } void +nouveau_fence_work(struct nouveau_fence *fence, + void (*work)(void *priv, bool signalled), + void *priv) +{ + BUG_ON(fence->work); + + spin_lock(&fence->channel->fence.lock); + + if (fence->signalled) { + work(priv, true); + } else { + fence->work = work; + fence->priv = priv; + } + + spin_unlock(&fence->channel->fence.lock); +} + +void nouveau_fence_unref(void **sync_obj) { struct nouveau_fence *fence = nouveau_fence(*sync_obj); @@ -268,6 +294,10 @@ nouveau_fence_channel_fini(struct nouveau_channel *chan) list_for_each_entry_safe(fence, tmp, &chan->fence.pending, entry) { fence->signalled = true; list_del(&fence->entry); + + if (unlikely(fence->work)) + fence->work(fence->priv, false); + kref_put(&fence->refcount, nouveau_fence_del); } } |