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drm/msm: Remove exclusive-fence hack 

The workaround was initially necessary due to dma_resv having only a
single exclusive fence slot, yet whe don't necessarily know what order
the gpu scheduler will schedule jobs.  Unfortunately this workaround
also has the result of forcing implicit sync, even when userspace does
not want it.

However, since commit 047a1b877e ("dma-buf & drm/amdgpu: remove
dma_resv workaround") the workaround is no longer needed.  So remove
it.  This effectively reverts commit f1b3f696a0 ("drm/msm: Don't
break exclusive fence ordering")

Signed-off-by: Rob Clark <robdclark@chromium.org>
Patchwork: https://patchwork.freedesktop.org/patch/509457/
Link: https://lore.kernel.org/r/20221101214051.159988-1-robdclark@gmail.com
This commit is contained in:
Rob Clark 2022-11-01 14:40:51 -07:00
parent 7f7a942c0a
commit c901a8cae6
1 changed files with 1 additions and 2 deletions
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3
drivers/gpu/drm/msm/msm_gem_submit.c
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@ -334,8 +334,7 @@ static int submit_fence_sync(struct msm_gem_submit *submit, bool no_implicit)
if (ret)
return ret;
/* exclusive fences must be ordered */
if (no_implicit && !write)
if (no_implicit)
continue;
ret = drm_sched_job_add_implicit_dependencies(&submit->base,