AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-12-22 11:09:48 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

drm/i915: Skip barriers inside waits

Browse Source 
Attaching to the i915_active barrier is a two stage process, and a flush
is only effective when the barrier is activation. Thus it is possible
for us to see a barrier, and attempt to flush, only for our flush to
have no effect. As such, before attempting to activate signaling on the
fence we need to double check it is a fence!

Fixes: d13a317700 ("drm/i915: Flush idle barriers when waiting")
Closes: https://gitlab.freedesktop.org/drm/intel/issues/1333
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200227085723.1961649-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2020-02-27 08:57:04 +00:00
parent 69edc390a5
commit c0e3101882
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/i915/i915_active.c
View File

@ -453,6 +453,9 @@ static void enable_signaling(struct i915_active_fence *active)
{
struct dma_fence *fence;
if (unlikely(is_barrier(active)))
return;
fence = i915_active_fence_get(active);
if (!fence)
return;