Re: [Intel-gfx] [PATCH] drm: make drm_file use keyed wakeups

2020-04-28 Thread Daniel Vetter
On Fri, Apr 24, 2020 at 04:51:03PM +0200, Kenny Levinsen wrote: > Some processes, such as systemd, are only polling for EPOLLERR|EPOLLHUP. > As drm_file uses unkeyed wakeups, such a poll receives many spurious > wakeups from uninteresting events. > > Use keyed wakeups to allow the wakeup target to

[Intel-gfx] [PATCH] drm: make drm_file use keyed wakeups

2020-04-24 Thread Kenny Levinsen
Some processes, such as systemd, are only polling for EPOLLERR|EPOLLHUP. As drm_file uses unkeyed wakeups, such a poll receives many spurious wakeups from uninteresting events. Use keyed wakeups to allow the wakeup target to more efficiently discard these uninteresting events. Signed-off-by: Kenn