diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_request.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_request.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c index e9c2094ab8ea..82094b9f5ba7 100644 --- a/drivers/gpu/drm/i915/i915_request.c +++ b/drivers/gpu/drm/i915/i915_request.c @@ -783,6 +783,12 @@ emit_semaphore_wait(struct i915_request *to, GEM_BUG_ON(!from->timeline->has_initial_breadcrumb); GEM_BUG_ON(INTEL_GEN(to->i915) < 8); + /* Just emit the first semaphore we see as request space is limited. */ + if (to->sched.semaphores & from->engine->mask) + return i915_sw_fence_await_dma_fence(&to->submit, + &from->fence, 0, + I915_FENCE_GFP); + /* We need to pin the signaler's HWSP until we are finished reading. */ err = i915_timeline_read_hwsp(from, to, &hwsp_offset); if (err) @@ -814,7 +820,8 @@ emit_semaphore_wait(struct i915_request *to, *cs++ = 0; intel_ring_advance(to, cs); - to->sched.flags |= I915_SCHED_HAS_SEMAPHORE; + to->sched.semaphores |= from->engine->mask; + to->sched.flags |= I915_SCHED_HAS_SEMAPHORE_CHAIN; return 0; } @@ -1126,7 +1133,7 @@ void i915_request_add(struct i915_request *request) * far in the distance past over useful work, we keep a history * of any semaphore use along our dependency chain. */ - if (!(request->sched.flags & I915_SCHED_HAS_SEMAPHORE)) + if (!(request->sched.flags & I915_SCHED_HAS_SEMAPHORE_CHAIN)) attr.priority |= I915_PRIORITY_NOSEMAPHORE; /* |