diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-01-25 13:22:28 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-01-25 14:27:22 +0000 |
| commit | eb8d0f5af4ec2d172baf8b4b9a2199cd916b4e54 (patch) | |
| tree | 28293a5cdfd09863ce764d181c5039cce25b79a2 /drivers/gpu/drm/i915/i915_gem_fence_reg.h | |
| parent | fe62365f9f80a1c1d438c54fba21f5108a182de8 (diff) | |
drm/i915: Remove GPU reset dependence on struct_mutex
Now that the submission backends are controlled via their own spinlocks,
with a wave of a magic wand we can lift the struct_mutex requirement
around GPU reset. That is we allow the submission frontend (userspace)
to keep on submitting while we process the GPU reset as we can suspend
the backend independently.
The major change is around the backoff/handoff strategy for performing
the reset. With no mutex deadlock, we no longer have to coordinate with
any waiter, and just perform the reset immediately.
Testcase: igt/gem_mmap_gtt/hang # regresses
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190125132230.22221-3-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_fence_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_fence_reg.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_fence_reg.h b/drivers/gpu/drm/i915/i915_gem_fence_reg.h index 99a31ded4dfd..09dcaf14121b 100644 --- a/drivers/gpu/drm/i915/i915_gem_fence_reg.h +++ b/drivers/gpu/drm/i915/i915_gem_fence_reg.h @@ -50,4 +50,3 @@ struct drm_i915_fence_reg { }; #endif - |