Hi Chris, 2016-08-29 Chris Wilson <ch...@chris-wilson.co.uk>:
> 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 <ch...@chris-wilson.co.uk> > Cc: Sumit Semwal <sumit.sem...@linaro.org> > Cc: Gustavo Padovan <gust...@padovan.org> > Cc: linux-media@vger.kernel.org > Cc: dri-de...@lists.freedesktop.org > Cc: linaro-mm-...@lists.linaro.org > --- > drivers/dma-buf/sync_file.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) Indeed, we can shortcut this. Reviewed-by: Gustavo Padovan <gustavo.pado...@collabora.co.uk> Gustavo -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
