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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2012-04-21 15:23:23 (GMT) |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-05-03 09:18:06 (GMT) |
| commit | 5d82e3e6427d407e5e4713a2f73210b4e7801ad3 (patch) | |
| tree | 15195b0bf801467db545342481d1b793bff09776 /drivers/gpu/drm/i915/i915_gem.c | |
| parent | 38de45c5fc61a4a6b2f0b4b7c9ae9f32f058f420 (diff) | |
| download | linux-fsl-qoriq-5d82e3e6427d407e5e4713a2f73210b4e7801ad3.tar.xz | |
drm/i915: Clarify the semantics of tiling_changed
Rename obj->tiling_changed to obj->fence_dirty so that it is clear that
it flags when the parameters for an active fence (including the
no-fence) register are changed.
Also, do not set this flag when the object does not have a fence
register allocated currently and the gpu does not depend upon the
unfence. This case works exactly like when a tiled object lost its
fence and hence does not need additional handling for the tiling
change in the code.
v2: Use fence_dirty to better express what the flag tracks and add a few
more details to the comments to serve as a reminder of how the GPU also
uses the unfenced register slot.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Add some bikeshed to the commit message about the stricter
use of fence_dirty.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 9e9ea75..38490cd 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -66,7 +66,7 @@ static inline void i915_gem_object_fence_lost(struct drm_i915_gem_object *obj) /* As we do not have an associated fence register, we will force * a tiling change if we ever need to acquire one. */ - obj->tiling_changed = false; + obj->fence_dirty = false; obj->fence_reg = I915_FENCE_REG_NONE; } @@ -2459,7 +2459,7 @@ i915_gem_object_get_fence(struct drm_i915_gem_object *obj) /* Have we updated the tiling parameters upon the object and so * will need to serialise the write to the associated fence register? */ - if (obj->tiling_changed) { + if (obj->fence_dirty) { ret = i915_gem_object_flush_fence(obj); if (ret) return ret; @@ -2468,7 +2468,7 @@ i915_gem_object_get_fence(struct drm_i915_gem_object *obj) /* Just update our place in the LRU if our fence is getting reused. */ if (obj->fence_reg != I915_FENCE_REG_NONE) { reg = &dev_priv->fence_regs[obj->fence_reg]; - if (!obj->tiling_changed) { + if (!obj->fence_dirty) { list_move_tail(®->lru_list, &dev_priv->mm.fence_list); return 0; @@ -2491,7 +2491,7 @@ i915_gem_object_get_fence(struct drm_i915_gem_object *obj) return 0; i915_gem_object_update_fence(obj, reg, enable); - obj->tiling_changed = false; + obj->fence_dirty = false; return 0; } |