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Commit d1ede145 authored by Ben Skeggs's avatar Ben Skeggs Committed by Dave Airlie
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drm/ttm: export some functions useful to drivers using ttm 



These are functions required by nouveau which will be merged later.

Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 9062fa66

drivers/gpu/drm/ttm/ttm_bo.c

+4 −0
Original line number Original line Diff line number Diff line
@@ -185,6 +185,7 @@ int ttm_bo_wait_unreserved(struct ttm_buffer_object *bo, bool interruptible) 
	}

	}

	return 0;

	return 0;

}

}

EXPORT_SYMBOL(ttm_bo_wait_unreserved);





static void ttm_bo_add_to_lru(struct ttm_buffer_object *bo)

static void ttm_bo_add_to_lru(struct ttm_buffer_object *bo)

{

{
@@ -946,6 +947,7 @@ int ttm_bo_wait_cpu(struct ttm_buffer_object *bo, bool no_wait) 
	return wait_event_interruptible(bo->event_queue,

	return wait_event_interruptible(bo->event_queue,

					atomic_read(&bo->cpu_writers) == 0);

					atomic_read(&bo->cpu_writers) == 0);

}

}

EXPORT_SYMBOL(ttm_bo_wait_cpu);





int ttm_bo_move_buffer(struct ttm_buffer_object *bo,

int ttm_bo_move_buffer(struct ttm_buffer_object *bo,

			struct ttm_placement *placement,

			struct ttm_placement *placement,
@@ -1727,12 +1729,14 @@ int ttm_bo_synccpu_write_grab(struct ttm_buffer_object *bo, bool no_wait) 
	ttm_bo_unreserve(bo);

	ttm_bo_unreserve(bo);

	return ret;

	return ret;

}

}

EXPORT_SYMBOL(ttm_bo_synccpu_write_grab);





void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo)

void ttm_bo_synccpu_write_release(struct ttm_buffer_object *bo)

{

{

	if (atomic_dec_and_test(&bo->cpu_writers))

	if (atomic_dec_and_test(&bo->cpu_writers))

		wake_up_all(&bo->event_queue);

		wake_up_all(&bo->event_queue);

}

}

EXPORT_SYMBOL(ttm_bo_synccpu_write_release);





/**

/**

 * A buffer object shrink method that tries to swap out the first

 * A buffer object shrink method that tries to swap out the first