Chris Wilson ecebca79f6 dma-buf/sync-file: Avoid enable fence signaling if poll(.timeout=0) ... If we being polled with a timeout of zero, a nonblocking busy query, we don't need to install any fence callbacks as we will not be waiting. As we only install the callback once, the overhead comes from the atomic bit test that also causes serialisation between threads. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: linux-media@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linaro-mm-sig@lists.linaro.org Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org> Link: http://patchwork.freedesktop.org/patch/msgid/20160829181613.30722-1-chris@chris-wilson.co.uk		2016-09-13 20:09:49 +05:30
..
dma-buf.c	dma-buf: Wait on the reservation object when sync'ing before CPU access	2016-08-16 12:31:35 +05:30
fence-array.c	dma-buf: fix kernel-doc warning and typos	2016-08-17 09:19:28 +05:30
fence.c	dma-buf/fence: make fence context 64 bit v2	2016-06-02 08:27:41 +02:00
Kconfig	dma-buf/sync_file: improve Kconfig description for Sync Files	2016-07-13 19:52:08 +05:30
Makefile	dma-buf/fence: add fence_array fences v6	2016-06-02 09:26:15 +02:00
reservation.c	reservation: fix small comment typo	2016-08-22 09:22:09 +02:00
seqno-fence.c	dma-buf: Minor coding style fixes	2015-05-21 11:29:59 +05:30
sync_file.c	dma-buf/sync-file: Avoid enable fence signaling if poll(.timeout=0)	2016-09-13 20:09:49 +05:30