diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_breadcrumbs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_breadcrumbs.c | 32 |
1 files changed, 11 insertions, 21 deletions
diff --git a/drivers/gpu/drm/i915/intel_breadcrumbs.c b/drivers/gpu/drm/i915/intel_breadcrumbs.c index cacaa1d04d17..3cbffd400b1b 100644 --- a/drivers/gpu/drm/i915/intel_breadcrumbs.c +++ b/drivers/gpu/drm/i915/intel_breadcrumbs.c @@ -27,8 +27,6 @@ #include "i915_drv.h" -#define task_asleep(tsk) ((tsk)->state & TASK_NORMAL && !(tsk)->on_rq) - static void irq_enable(struct intel_engine_cs *engine) { if (!engine->irq_enable) @@ -82,7 +80,7 @@ static inline bool __request_completed(const struct i915_request *rq) return i915_seqno_passed(__hwsp_seqno(rq), rq->fence.seqno); } -bool intel_engine_breadcrumbs_irq(struct intel_engine_cs *engine) +void intel_engine_breadcrumbs_irq(struct intel_engine_cs *engine) { struct intel_breadcrumbs *b = &engine->breadcrumbs; struct intel_context *ce, *cn; @@ -106,16 +104,6 @@ bool intel_engine_breadcrumbs_irq(struct intel_engine_cs *engine) GEM_BUG_ON(!test_bit(I915_FENCE_FLAG_SIGNAL, &rq->fence.flags)); - clear_bit(I915_FENCE_FLAG_SIGNAL, &rq->fence.flags); - - /* - * We may race with direct invocation of - * dma_fence_signal(), e.g. i915_request_retire(), - * in which case we can skip processing it ourselves. - */ - if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, - &rq->fence.flags)) - continue; /* * Queue for execution after dropping the signaling @@ -123,6 +111,14 @@ bool intel_engine_breadcrumbs_irq(struct intel_engine_cs *engine) * more signalers to the same context or engine. */ i915_request_get(rq); + + /* + * We may race with direct invocation of + * dma_fence_signal(), e.g. i915_request_retire(), + * so we need to acquire our reference to the request + * before we cancel the breadcrumb. + */ + clear_bit(I915_FENCE_FLAG_SIGNAL, &rq->fence.flags); list_add_tail(&rq->signal_link, &signal); } @@ -148,19 +144,13 @@ bool intel_engine_breadcrumbs_irq(struct intel_engine_cs *engine) dma_fence_signal(&rq->fence); i915_request_put(rq); } - - return !list_empty(&signal); } -bool intel_engine_signal_breadcrumbs(struct intel_engine_cs *engine) +void intel_engine_signal_breadcrumbs(struct intel_engine_cs *engine) { - bool result; - local_irq_disable(); - result = intel_engine_breadcrumbs_irq(engine); + intel_engine_breadcrumbs_irq(engine); local_irq_enable(); - - return result; } static void signal_irq_work(struct irq_work *work) |