drm/ttm: optionally move duplicates to a separate list
This patch adds an optional list_head parameter to ttm_eu_reserve_buffers.
If specified duplicates in the execbuf list are no longer reported as errors,
but moved to this list instead.
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.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_execbuf_util.c b/drivers/gpu/drm/ttm/ttm_execbuf_util.c
index 8ce508e..3820ae9 100644
--- a/drivers/gpu/drm/ttm/ttm_execbuf_util.c
+++ b/drivers/gpu/drm/ttm/ttm_execbuf_util.c
@@ -93,7 +93,8 @@
*/
int ttm_eu_reserve_buffers(struct ww_acquire_ctx *ticket,
- struct list_head *list, bool intr)
+ struct list_head *list, bool intr,
+ struct list_head *dups)
{
struct ttm_bo_global *glob;
struct ttm_validate_buffer *entry;
@@ -117,6 +118,13 @@
__ttm_bo_unreserve(bo);
ret = -EBUSY;
+
+ } else if (ret == -EALREADY && dups) {
+ struct ttm_validate_buffer *safe = entry;
+ entry = list_prev_entry(entry, head);
+ list_del(&safe->head);
+ list_add(&safe->head, dups);
+ continue;
}
if (!ret) {