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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2010-10-14 13:20:40 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2010-10-19 09:19:28 +0100 |
| commit | 202f2fef7a1aa6b2e4fa6e1de3ef582342fd41f0 (patch) | |
| tree | 4094308fc3d12f51920e1889ff0160d78095f0d7 | |
| parent | f0c43d9b7ec1bb9827b3dd5ac5915d22ceed8f6a (diff) | |
| download | kernel_samsung_aries-202f2fef7a1aa6b2e4fa6e1de3ef582342fd41f0.zip kernel_samsung_aries-202f2fef7a1aa6b2e4fa6e1de3ef582342fd41f0.tar.gz kernel_samsung_aries-202f2fef7a1aa6b2e4fa6e1de3ef582342fd41f0.tar.bz2 | |
drm/i915: Avoid taking the mutex for dropping the refcnt upon creation
After allocation a handle for the fresh object, we know that we can
safely drop the refcnt without triggering a free so we do not need the
mutex. Strangely, this mutex acquisition is the one that appears on
driver profiles.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 32ff571..942e4b3 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -244,12 +244,17 @@ i915_gem_create_ioctl(struct drm_device *dev, void *data, return -ENOMEM; ret = drm_gem_handle_create(file_priv, obj, &handle); - /* drop reference from allocate - handle holds it now */ - drm_gem_object_unreference_unlocked(obj); if (ret) { + drm_gem_object_release(obj); + i915_gem_info_remove_obj(dev->dev_private, obj->size); + kfree(obj); return ret; } + /* drop reference from allocate - handle holds it now */ + drm_gem_object_unreference(obj); + trace_i915_gem_object_create(obj); + args->handle = handle; return 0; } @@ -4380,8 +4385,6 @@ struct drm_gem_object * i915_gem_alloc_object(struct drm_device *dev, INIT_LIST_HEAD(&obj->gpu_write_list); obj->madv = I915_MADV_WILLNEED; - trace_i915_gem_object_create(&obj->base); - return &obj->base; } |