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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-08-15 00:02:42 +0200 |
|---|---|---|
| committer | Chanho Park <chanho61.park@samsung.com> | 2014-11-21 19:12:24 +0900 |
| commit | 9c6b5ed8e6b674b076c9d500e81ce6e45a88da56 (patch) | |
| tree | 59534d8fc92736b191c460b106759371bf34cd85 /drivers/gpu/drm | |
| parent | 40c3e8bfa246528c23e700c946e1f3e74c15dc27 (diff) | |
| download | linux-3.10-9c6b5ed8e6b674b076c9d500e81ce6e45a88da56.tar.gz linux-3.10-9c6b5ed8e6b674b076c9d500e81ce6e45a88da56.tar.bz2 linux-3.10-9c6b5ed8e6b674b076c9d500e81ce6e45a88da56.zip | |
drm/prime: shrink critical section protected by prime lock
When exporting a gem object as a dma-buf the critical section for the
per-fd prime lock is just the adding (and in case of errors, removing)
of the handle to the per-fd lookup cache.
So restrict the critical section to just that part of the function.
This simplifies later reordering.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/drm_prime.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index 3a92bed08b9..cf38430749f 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -310,7 +310,6 @@ int drm_gem_prime_handle_to_fd(struct drm_device *dev, if (!obj) return -ENOENT; - mutex_lock(&file_priv->prime.lock); /* re-export the original imported object */ if (obj->import_attach) { dmabuf = obj->import_attach->dmabuf; @@ -332,6 +331,7 @@ int drm_gem_prime_handle_to_fd(struct drm_device *dev, } obj->export_dma_buf = dmabuf; + mutex_lock(&file_priv->prime.lock); /* if we've exported this buffer the cheat and add it to the import list * so we get the correct handle back */ @@ -363,13 +363,13 @@ out_have_obj: fail_rm_handle: drm_prime_remove_buf_handle_locked(&file_priv->prime, dmabuf); + mutex_unlock(&file_priv->prime.lock); fail_put_dmabuf: /* clear NOT to be checked when releasing dma_buf */ obj->export_dma_buf = NULL; dma_buf_put(dmabuf); out: drm_gem_object_unreference_unlocked(obj); - mutex_unlock(&file_priv->prime.lock); return ret; } EXPORT_SYMBOL(drm_gem_prime_handle_to_fd); |