drm/ttm: remove TTM_BO_PRIV_FLAG_MOVING
Instead of using the flag just remember the fence of the last move operation.
This avoids waiting for command submissions pipelined after the move, but
before accessing the BO with the CPU again.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index c3c615c..caa657d 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -149,6 +149,7 @@
ttm_tt_destroy(bo->ttm);
atomic_dec(&bo->glob->bo_count);
+ fence_put(bo->moving);
if (bo->resv == &bo->ttm_resv)
reservation_object_fini(&bo->ttm_resv);
mutex_destroy(&bo->wu_mutex);
@@ -1138,7 +1139,7 @@
bo->mem.page_alignment = page_alignment;
bo->mem.bus.io_reserved_vm = false;
bo->mem.bus.io_reserved_count = 0;
- bo->priv_flags = 0;
+ bo->moving = NULL;
bo->mem.placement = (TTM_PL_FLAG_SYSTEM | TTM_PL_FLAG_CACHED);
bo->persistent_swap_storage = persistent_swap_storage;
bo->acc_size = acc_size;
@@ -1585,7 +1586,6 @@
return -EBUSY;
reservation_object_add_excl_fence(resv, NULL);
- clear_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags);
return 0;
}
EXPORT_SYMBOL(ttm_bo_wait);