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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2019-08-22 07:09:12 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-08-22 08:53:40 +0100 |
| commit | e2ccc50a3a6c90cace6a9aef40072e558dd13863 (patch) | |
| tree | a66f4aa9b6f2825955aca14a3cf6cef705a056ac /drivers/gpu/drm/i915/i915_vma.h | |
| parent | drm/i915: Generalise the clflush dma-worker (diff) | |
| download | linux-dev-e2ccc50a3a6c90cace6a9aef40072e558dd13863.tar.xz linux-dev-e2ccc50a3a6c90cace6a9aef40072e558dd13863.zip | |
drm/i915: Track ggtt fence reservations under its own mutex
We can reduce the locking for fence registers from the dev->struct_mutex
to a local mutex. We could introduce a mutex for the sole purpose of
tracking the fence acquisition, except there is a little bit of overlap
with the fault tracking, so use the i915_ggtt.mutex as it covers both.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190822060914.2671-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_vma.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_vma.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_vma.h b/drivers/gpu/drm/i915/i915_vma.h index 9e7d8f4154b2..cf6c0437091d 100644 --- a/drivers/gpu/drm/i915/i915_vma.h +++ b/drivers/gpu/drm/i915/i915_vma.h @@ -426,8 +426,8 @@ int __must_check i915_vma_put_fence(struct i915_vma *vma); static inline void __i915_vma_unpin_fence(struct i915_vma *vma) { - GEM_BUG_ON(vma->fence->pin_count <= 0); - vma->fence->pin_count--; + GEM_BUG_ON(atomic_read(&vma->fence->pin_count) <= 0); + atomic_dec(&vma->fence->pin_count); } /** |