Blocking in a worker is ok, that's what the unbound_wq is for. And it
unifies the paths between the blocking and nonblocking commit, giving
me just one path where I have to implement the deadlock avoidance
trickery in the next patch.
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxx>
Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_display.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 010a1f3e000c..5aa7ca1ab592 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12397,6 +12397,8 @@ static void intel_atomic_commit_tail(struct drm_atomic_state *state)
unsigned crtc_vblank_mask = 0;
int i;
+ i915_sw_fence_wait(&intel_state->commit_ready);
+
drm_atomic_helper_wait_for_dependencies(state);
if (intel_state->modeset)
@@ -12564,10 +12566,7 @@ intel_atomic_commit_ready(struct i915_sw_fence *fence,
switch (notify) {
case FENCE_COMPLETE:
- if (state->base.commit_work.func)
- queue_work(system_unbound_wq, &state->base.commit_work);
break;
-
case FENCE_FREE:
{
struct intel_atomic_helper *helper =
@@ -12671,14 +12670,14 @@ static int intel_atomic_commit(struct drm_device *dev,
}
drm_atomic_state_get(state);
- INIT_WORK(&state->commit_work,
- nonblock ? intel_atomic_commit_work : NULL);
+ INIT_WORK(&state->commit_work, intel_atomic_commit_work);
i915_sw_fence_commit(&intel_state->commit_ready);
- if (!nonblock) {
- i915_sw_fence_wait(&intel_state->commit_ready);
+ if (nonblock)
+ queue_work(system_unbound_wq, &state->commit_work);
+ else
intel_atomic_commit_tail(state);
- }
+
return 0;
}
--
2.13.2
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