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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-10-28 15:58:29 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-10-28 22:53:43 +0300 |
| commit | f8a7fde4561067a8ebc956b27afeb530ac97cb9d (patch) | |
| tree | ac1978967ea8db445c219bfa9a95972a1b45a209 /drivers/gpu/drm/i915/intel_ringbuffer.c | |
| parent | 2e36991a8aa2fb5b06eee7958cced0665ea6f35d (diff) | |
| download | linux-f8a7fde4561067a8ebc956b27afeb530ac97cb9d.tar.xz | |
drm/i915: Defer active reference until required
We only need the active reference to keep the object alive after the
handle has been deleted (so as to prevent a synchronous gem_close). Why
then pay the price of a kref on every execbuf when we can insert that
final active ref just in time for the handle deletion?
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161028125858.23563-6-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 8ef735faa603..8eee9675d3bf 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -1762,14 +1762,19 @@ static void cleanup_phys_status_page(struct intel_engine_cs *engine) static void cleanup_status_page(struct intel_engine_cs *engine) { struct i915_vma *vma; + struct drm_i915_gem_object *obj; vma = fetch_and_zero(&engine->status_page.vma); if (!vma) return; + obj = vma->obj; + i915_vma_unpin(vma); - i915_gem_object_unpin_map(vma->obj); - i915_vma_put(vma); + i915_vma_close(vma); + + i915_gem_object_unpin_map(obj); + __i915_gem_object_release_unless_active(obj); } static int init_status_page(struct intel_engine_cs *engine) @@ -1967,7 +1972,11 @@ intel_engine_create_ring(struct intel_engine_cs *engine, int size) void intel_ring_free(struct intel_ring *ring) { - i915_vma_put(ring->vma); + struct drm_i915_gem_object *obj = ring->vma->obj; + + i915_vma_close(ring->vma); + __i915_gem_object_release_unless_active(obj); + kfree(ring); } |