Linaro-mm-sig May 2017

linaro-mm-sig@lists.linaro.org

5 participants
2 discussions

Re: [Linaro-mm-sig] [PATCH] dma-buf: avoid scheduling on fence status query v2

by Gustavo Padovan

2017-04-26 Christian König <deathsimple(a)vodafone.de>: > Am 26.04.2017 um 16:46 schrieb Andres Rodriguez: > > When a timeout of zero is specified, the caller is only interested in > > the fence status. > > > > In the current implementation, dma_fence_default_wait will always call > > schedule_timeout() at least once for an unsignaled fence. This adds a > > significant overhead to a fence status query. > > > > Avoid this overhead by returning early if a zero timeout is specified. > > > > v2: move early return after enable_signaling > > > > Signed-off-by: Andres Rodriguez <andresx7(a)gmail.com> > > Reviewed-by: Christian König <christian.koenig(a)amd.com> pushed to drm-misc-next. Thanks all. Gustavo

6 years, 11 months

[PATCH 0/4] DMA-buf: Fine-tuning for four function implementations

by SF Markus Elfring

From: Markus Elfring <elfring(a)users.sourceforge.net> Date: Mon, 8 May 2017 11:05:05 +0200 A few update suggestions were taken into account from static source code analysis. Markus Elfring (4): Combine two function calls into one in dma_buf_debug_show() Improve a size determination in dma_buf_attach() Adjust a null pointer check in dma_buf_attach() Use seq_putc() in two functions drivers/dma-buf/dma-buf.c | 8 +++----- drivers/dma-buf/sync_debug.c | 6 +++--- 2 files changed, 6 insertions(+), 8 deletions(-) -- 2.12.2

6 years, 11 months

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Linaro-mm-sig May 2017