Commit d7d5a21d authored by Rob Clark's avatar Rob Clark
Browse files

dma-buf/dma-resv: Add a way to set fence deadline 



Add a way to set a deadline on remaining resv fences according to the
requested usage.

Signed-off-by: default avatarRob Clark <robdclark@chromium.org>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
parent 786119ff

drivers/dma-buf/dma-resv.c

+22 −0
Original line number Diff line number Diff line
@@ -684,6 +684,28 @@ long dma_resv_wait_timeout(struct dma_resv *obj, enum dma_resv_usage usage, 
}

EXPORT_SYMBOL_GPL(dma_resv_wait_timeout);



/**

 * dma_resv_set_deadline - Set a deadline on reservation's objects fences

 * @obj: the reservation object

 * @usage: controls which fences to include, see enum dma_resv_usage.

 * @deadline: the requested deadline (MONOTONIC)

 *

 * May be called without holding the dma_resv lock.  Sets @deadline on

 * all fences filtered by @usage.

 */

void dma_resv_set_deadline(struct dma_resv *obj, enum dma_resv_usage usage,

			   ktime_t deadline)

{

	struct dma_resv_iter cursor;

	struct dma_fence *fence;



	dma_resv_iter_begin(&cursor, obj, usage);

	dma_resv_for_each_fence_unlocked(&cursor, fence) {

		dma_fence_set_deadline(fence, deadline);

	}

	dma_resv_iter_end(&cursor);

}

EXPORT_SYMBOL_GPL(dma_resv_set_deadline);



/**

 * dma_resv_test_signaled - Test if a reservation object's fences have been

include/linux/dma-resv.h

+2 −0
Original line number Diff line number Diff line
@@ -479,6 +479,8 @@ int dma_resv_get_singleton(struct dma_resv *obj, enum dma_resv_usage usage, 
int dma_resv_copy_fences(struct dma_resv *dst, struct dma_resv *src);

long dma_resv_wait_timeout(struct dma_resv *obj, enum dma_resv_usage usage,

			   bool intr, unsigned long timeout);

void dma_resv_set_deadline(struct dma_resv *obj, enum dma_resv_usage usage,

			   ktime_t deadline);

bool dma_resv_test_signaled(struct dma_resv *obj, enum dma_resv_usage usage);

void dma_resv_describe(struct dma_resv *obj, struct seq_file *seq);