diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-08-15 02:02:42 +0400 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2013-08-21 06:53:46 +0400 |
| commit | bdf655de47b0d17ee2efc3bea5f617445ff77adc (patch) | |
| tree | 90a2ad1bff0cb718967a151ef735d1d15565210a /drivers/gpu/drm | |
| parent | 4332bf438bbbc31319abed61d2ac6d9932ff980c (diff) | |
| download | linux-bdf655de47b0d17ee2efc3bea5f617445ff77adc.tar.xz | |
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 c2d6d54e10e0..cb0451679e81 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); |