mirror of
https://github.com/torvalds/linux.git
synced 2026-10-07 22:37:45 -04:00
Chris Wilson
f2cb60e9a3
The timestamp and the cb_list are mutually exclusive, the cb_list can only be added to prior to being signaled (and once signaled we drain), while the timestamp is only valid upon being signaled. Both the timestamp and the cb_list are only valid while the fence is alive, and as soon as no references are held can be replaced by the rcu_head. By reusing the union for the timestamp, we squeeze the base dma_fence struct to 64 bytes on x86-64. v2: Sort the union chronologically Suggested-by: Christian König <[email protected]> Signed-off-by: Chris Wilson <[email protected]> Cc: Christian König <[email protected]> Acked-by: Christian König <[email protected]>. Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]