Commit 35d67ee3 authored by Rajneesh Bhardwaj's avatar Rajneesh Bhardwaj Committed by Christian König
Browse files

drm/ttm: Use init_on_free to delay release TTM BOs 



Delay release TTM BOs when the kernel default setting is init_on_free.
This offloads the overhead of clearing the system memory to the work
item and potentially a different CPU. This could be very beneficial when
the application does a lot of malloc/free style allocations of system
memory.

Signed-off-by: default avatarRajneesh Bhardwaj <rajneesh.bhardwaj@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com&gt;.>
Link: https://patchwork.freedesktop.org/patch/msgid/20230708011355.853-1-rajneesh.bhardwaj@amd.com


Signed-off-by: default avatarChristian König <christian.koenig@amd.com>
parent 45a4ff62

drivers/gpu/drm/ttm/ttm_bo.c

+1 −0
Original line number Diff line number Diff line
@@ -345,6 +345,7 @@ static void ttm_bo_release(struct kref *kref) 


		if (!dma_resv_test_signaled(bo->base.resv,

					    DMA_RESV_USAGE_BOOKKEEP) ||

		    (want_init_on_free() && (bo->ttm != NULL)) ||

		    !dma_resv_trylock(bo->base.resv)) {

			/* The BO is not idle, resurrect it for delayed destroy */

			ttm_bo_flush_all_fences(bo);