diff options
| -rw-r--r-- | drivers/gpu/drm/xe/xe_exec_queue.c | 33 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_exec_queue.h | 2 |
2 files changed, 33 insertions, 2 deletions
diff --git a/drivers/gpu/drm/xe/xe_exec_queue.c b/drivers/gpu/drm/xe/xe_exec_queue.c index 3ce4582504f9..6d3b44cbc4c7 100644 --- a/drivers/gpu/drm/xe/xe_exec_queue.c +++ b/drivers/gpu/drm/xe/xe_exec_queue.c @@ -837,10 +837,12 @@ int xe_exec_queue_destroy_ioctl(struct drm_device *dev, void *data, static void xe_exec_queue_last_fence_lockdep_assert(struct xe_exec_queue *q, struct xe_vm *vm) { - if (q->flags & EXEC_QUEUE_FLAG_VM) + if (q->flags & EXEC_QUEUE_FLAG_VM) { lockdep_assert_held(&vm->lock); - else + } else { xe_vm_assert_held(vm); + lockdep_assert_held(&q->hwe->hw_engine_group->mode_sem); + } } /** @@ -895,6 +897,33 @@ struct dma_fence *xe_exec_queue_last_fence_get(struct xe_exec_queue *q, } /** + * xe_exec_queue_last_fence_get_for_resume() - Get last fence + * @q: The exec queue + * @vm: The VM the engine does a bind or exec for + * + * Get last fence, takes a ref. Only safe to be called in the context of + * resuming the hw engine group's long-running exec queue, when the group + * semaphore is held. + * + * Returns: last fence if not signaled, dma fence stub if signaled + */ +struct dma_fence *xe_exec_queue_last_fence_get_for_resume(struct xe_exec_queue *q, + struct xe_vm *vm) +{ + struct dma_fence *fence; + + lockdep_assert_held_write(&q->hwe->hw_engine_group->mode_sem); + + if (q->last_fence && + test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &q->last_fence->flags)) + xe_exec_queue_last_fence_put_unlocked(q); + + fence = q->last_fence ? q->last_fence : dma_fence_get_stub(); + dma_fence_get(fence); + return fence; +} + +/** * xe_exec_queue_last_fence_set() - Set last fence * @q: The exec queue * @vm: The VM the engine does a bind or exec for diff --git a/drivers/gpu/drm/xe/xe_exec_queue.h b/drivers/gpu/drm/xe/xe_exec_queue.h index 99139368ba6e..90c7f73eab88 100644 --- a/drivers/gpu/drm/xe/xe_exec_queue.h +++ b/drivers/gpu/drm/xe/xe_exec_queue.h @@ -77,6 +77,8 @@ void xe_exec_queue_last_fence_put(struct xe_exec_queue *e, struct xe_vm *vm); void xe_exec_queue_last_fence_put_unlocked(struct xe_exec_queue *e); struct dma_fence *xe_exec_queue_last_fence_get(struct xe_exec_queue *e, struct xe_vm *vm); +struct dma_fence *xe_exec_queue_last_fence_get_for_resume(struct xe_exec_queue *e, + struct xe_vm *vm); void xe_exec_queue_last_fence_set(struct xe_exec_queue *e, struct xe_vm *vm, struct dma_fence *fence); int xe_exec_queue_last_fence_test_dep(struct xe_exec_queue *q, |