Hi Chris, On 29 August 2016 at 23:56, Gustavo Padovan <gustavo@xxxxxxxxxxx> wrote: > Hi Chris, > > 2016-08-29 Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>: > >> 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@xxxxxxxxxxxxxxxxxx> >> Cc: Sumit Semwal <sumit.semwal@xxxxxxxxxx> >> Cc: Gustavo Padovan <gustavo@xxxxxxxxxxx> >> Cc: linux-media@xxxxxxxxxxxxxxx >> Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx >> Cc: linaro-mm-sig@xxxxxxxxxxxxxxxx >> --- >> drivers/dma-buf/sync_file.c | 3 ++- >> 1 file changed, 2 insertions(+), 1 deletion(-) > > Indeed, we can shortcut this. > > Reviewed-by: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx> > > Gustavo Thanks; pushed to drm-misc. Best, Sumit. -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
