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authorChristian König <christian.koenig@amd.com>2014-12-03 15:46:48 +0100
committerAlex Deucher <alexander.deucher@amd.com>2014-12-03 18:26:52 -0500
commitaa35071c590461f95d0179cc8e730d49d610f773 (patch)
tree72f9c722700be9a265857bff56f3843c7f0e298d /include/drm
parent5e5c21cac1001089007260c48b0c89ebaace0e71 (diff)
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>
Diffstat (limited to 'include/drm')
-rw-r--r--include/drm/ttm/ttm_execbuf_util.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/include/drm/ttm/ttm_execbuf_util.h b/include/drm/ttm/ttm_execbuf_util.h
index 460441714413..b620c317c772 100644
--- a/include/drm/ttm/ttm_execbuf_util.h
+++ b/include/drm/ttm/ttm_execbuf_util.h
@@ -68,6 +68,7 @@ extern void ttm_eu_backoff_reservation(struct ww_acquire_ctx *ticket,
* non-blocking reserves should be tried.
* @list: thread private list of ttm_validate_buffer structs.
* @intr: should the wait be interruptible
+ * @dups: [out] optional list of duplicates.
*
* Tries to reserve bos pointed to by the list entries for validation.
* If the function returns 0, all buffers are marked as "unfenced",
@@ -83,6 +84,11 @@ extern void ttm_eu_backoff_reservation(struct ww_acquire_ctx *ticket,
* calling process receives a signal while waiting. In that case, no
* buffers on the list will be reserved upon return.
*
+ * If dups is non NULL all buffers already reserved by the current thread
+ * (e.g. duplicates) are added to this list, otherwise -EALREADY is returned
+ * on the first already reserved buffer and all buffers from the list are
+ * unreserved again.
+ *
* Buffers reserved by this function should be unreserved by
* a call to either ttm_eu_backoff_reservation() or
* ttm_eu_fence_buffer_objects() when command submission is complete or
@@ -90,7 +96,8 @@ extern void ttm_eu_backoff_reservation(struct ww_acquire_ctx *ticket,
*/
extern 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);
/**
* function ttm_eu_fence_buffer_objects.

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