drm/i915/i915_request.c

178 	.wait = i915_fence_wait,
791 		 * wait until the submit_request() is completed before
840 	/* If we cannot wait, dip into our reserves */
1173 	 * (post-wrap) values than they were expecting (and so wait
1205 	struct i915_sw_fence *wait = &to->submit;
1240 	wait = &to->semaphore;
1243 	return i915_sw_fence_await_dma_fence(wait,
1303 	 * So we wait.
1305 	 * However, there is also a second condition for which we need to wait
1310 	 * immediate execution, and so we must wait until it reaches the
1342 	 * it wait upon a semaphore.
1561  * i915_request_await_deps - set this request to (async) wait upon a struct
1582  * i915_request_await_object - set this request to (async) wait upon a bo
1585  * @write: whether the wait is on behalf of a writer
1593  *   request must wait for it to complete (either CPU or in hw, requests
1597  *   request must wait for outstanding read requests to complete.
1907 	 * Only wait for the request if we know it is likely to complete.
1923 	 * required to set up the irq and wait upon it limits the response
1956 	struct request_wait *wait = container_of(cb, typeof(*wait), cb);
1958 	wake_up_process(fetch_and_zero(&wait->tsk));
1962  * i915_request_wait_timeout - wait until execution of request has finished
1963  * @rq: the request to wait upon
1964  * @flags: how to wait
1965  * @timeout: how long to wait in jiffies
1969  * unbounded wait).
1978  * NOTE: This function has the same wait semantics as dma-fence.
1986 	struct request_wait wait;
2000 	 * We must never wait on the GPU while holding a lock as we
2002 	 * serialise wait/reset with an explicit lock, we do want
2012 	 * wait upon an old swapbuffer to throttle itself to remain within a
2017 	 * short wait, we first spin to see if the request would have completed
2049 	wait.tsk = current;
2050 	if (dma_fence_add_callback(&rq->fence, &wait.cb, request_wait_wake))
2091 	if (READ_ONCE(wait.tsk))
2092 		dma_fence_remove_callback(&rq->fence, &wait.cb);
2093 	GEM_BUG_ON(!list_empty(&wait.cb.node));
2102  * i915_request_wait - wait until execution of request has finished
2103  * @rq: the request to wait upon
2104  * @flags: how to wait
2105  * @timeout: how long to wait in jiffies
2109  * unbounded wait).
2116  * NOTE: This function behaves differently from dma-fence wait semantics for
2206 	 *    - a ready request may still need to wait on semaphores