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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2020-07-31 11:50:15 +0300 |
|---|---|---|
| committer | Joonas Lahtinen <joonas.lahtinen@linux.intel.com> | 2020-09-07 13:29:19 +0300 |
| commit | af5c6fcf403288e8656143549881c3eb716cae53 (patch) | |
| tree | 8a12a03af03dd1becd50589b590b2dfff7123e2b /drivers/gpu/drm/i915/i915_active.h | |
| parent | 9ff33bbcda259a7d1d4df8c977b32cf431972387 (diff) | |
| download | linux-af5c6fcf403288e8656143549881c3eb716cae53.tar.xz | |
drm/i915: Provide a fastpath for waiting on vma bindings
Before we can execute a request, we must wait for all of its vma to be
bound. This is a frequent operation for which we can optimise away a
few atomic operations (notably a cmpxchg) in lieu of the RCU protection.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Thomas Hellström <thomas.hellstrom@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200731085015.32368-7-chris@chris-wilson.co.uk
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_active.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_active.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_active.h b/drivers/gpu/drm/i915/i915_active.h index b9e0394e2975..fb165d3f01cf 100644 --- a/drivers/gpu/drm/i915/i915_active.h +++ b/drivers/gpu/drm/i915/i915_active.h @@ -231,4 +231,19 @@ struct i915_active *i915_active_create(void); struct i915_active *i915_active_get(struct i915_active *ref); void i915_active_put(struct i915_active *ref); +static inline int __i915_request_await_exclusive(struct i915_request *rq, + struct i915_active *active) +{ + struct dma_fence *fence; + int err = 0; + + fence = i915_active_fence_get(&active->excl); + if (fence) { + err = i915_request_await_dma_fence(rq, fence); + dma_fence_put(fence); + } + + return err; +} + #endif /* _I915_ACTIVE_H_ */ |