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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-08-12 20:48:03 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-08-12 21:29:16 +0300 |
| commit | 3d6792cf0a93d34e939acda7e35a649d83440274 (patch) | |
| tree | b74a297f3e3c4c83674e5ececc8e59224f0225c7 /drivers/gpu/drm/i915/i915_vma.c | |
| parent | cf1c97dcb96cb2622a0b0524b6931bd7bd7d2344 (diff) | |
| download | linux-3d6792cf0a93d34e939acda7e35a649d83440274.tar.xz | |
drm/i915: Forgo last_fence active request tracking
We were using the last_fence to track the last request that used this
vma that might be interpreted by a fence register and forced ourselves
to wait for this request before modifying any fence register that
overlapped our vma. Due to requirement that we need to track any XY_BLT
command, linear or tiled, this in effect meant that we have to track the
vma for its active lifespan anyway, so we can forgo the explicit
last_fence tracking and just use the whole vma->active.
Another solution would be to pipeline the register updates, and would
help resolve some long running stalls for gen3 (but only gen 2 and 3!)
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190812174804.26180-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_vma.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_vma.c | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c index 4183b0e10324..8be1bbef40e5 100644 --- a/drivers/gpu/drm/i915/i915_vma.c +++ b/drivers/gpu/drm/i915/i915_vma.c @@ -120,7 +120,6 @@ vma_create(struct drm_i915_gem_object *obj, i915_active_init(vm->i915, &vma->active, __i915_vma_active, __i915_vma_retire); - INIT_ACTIVE_REQUEST(&vma->last_fence); /* Declare ourselves safe for use inside shrinkers */ if (IS_ENABLED(CONFIG_LOCKDEP)) { @@ -802,8 +801,6 @@ static void __i915_vma_destroy(struct i915_vma *vma) GEM_BUG_ON(vma->node.allocated); GEM_BUG_ON(vma->fence); - GEM_BUG_ON(i915_active_request_isset(&vma->last_fence)); - mutex_lock(&vma->vm->mutex); list_del(&vma->vm_link); mutex_unlock(&vma->vm->mutex); @@ -928,9 +925,6 @@ int i915_vma_move_to_active(struct i915_vma *vma, obj->read_domains |= I915_GEM_GPU_DOMAINS; obj->mm.dirty = true; - if (flags & EXEC_OBJECT_NEEDS_FENCE) - __i915_active_request_set(&vma->last_fence, rq); - GEM_BUG_ON(!i915_vma_is_active(vma)); return 0; } @@ -961,14 +955,7 @@ int i915_vma_unbind(struct i915_vma *vma) * before we are finished). */ __i915_vma_pin(vma); - ret = i915_active_wait(&vma->active); - if (ret) - goto unpin; - - ret = i915_active_request_retire(&vma->last_fence, - &vma->vm->i915->drm.struct_mutex); -unpin: __i915_vma_unpin(vma); if (ret) return ret; |