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Commit 7c5ee536 authored by Matthew Garrett's avatar Matthew Garrett Committed by Dave Airlie
Browse files

ttm: Provide an API for starting and stopping the delayed workqueue 



We want to be able to prevent the delayed workqueue from changing state
while we're reclocking, so add an API to block and unblock it.

Signed-off-by: default avatarMatthew Garrett <mjg@redhat.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 8f5b5e63

drivers/gpu/drm/ttm/ttm_bo.c

+14 −0
Original line number Diff line number Diff line
@@ -604,6 +604,20 @@ void ttm_bo_unref(struct ttm_buffer_object **p_bo) 
}

EXPORT_SYMBOL(ttm_bo_unref);



int ttm_bo_lock_delayed_workqueue(struct ttm_bo_device *bdev)

{

	return cancel_delayed_work_sync(&bdev->wq);

}

EXPORT_SYMBOL(ttm_bo_lock_delayed_workqueue);



void ttm_bo_unlock_delayed_workqueue(struct ttm_bo_device *bdev, int resched)

{

	if (resched)

		schedule_delayed_work(&bdev->wq,

				      ((HZ / 100) < 1) ? 1 : HZ / 100);

}

EXPORT_SYMBOL(ttm_bo_unlock_delayed_workqueue);



static int ttm_bo_evict(struct ttm_buffer_object *bo, bool interruptible,

			bool no_wait_reserve, bool no_wait_gpu)

{

include/drm/ttm/ttm_bo_api.h

+17 −0
Original line number Diff line number Diff line
@@ -361,6 +361,23 @@ extern int ttm_bo_validate(struct ttm_buffer_object *bo, 
 */

extern void ttm_bo_unref(struct ttm_buffer_object **bo);



/**

 * ttm_bo_lock_delayed_workqueue

 *

 * Prevent the delayed workqueue from running.

 * Returns

 * True if the workqueue was queued at the time

 */

extern int ttm_bo_lock_delayed_workqueue(struct ttm_bo_device *bdev);



/**

 * ttm_bo_unlock_delayed_workqueue

 *

 * Allows the delayed workqueue to run.

 */

extern void ttm_bo_unlock_delayed_workqueue(struct ttm_bo_device *bdev,

					    int resched);



/**

 * ttm_bo_synccpu_write_grab

 *