On Wed, Feb 19, 2014 at 07:19:15PM +0100, Rui Tiago Cação Matos wrote: > On 19 February 2014 13:35, Daniel Stone <dan...@fooishbar.org> wrote: > > Can this be CLOCK_MONOTONIC_COARSE instead, to avoid griefing HPET and > > thus causing much higher power usage? > > Makes sense and indeed the X server seems to use _COARSE if it's > available and has good enough resolution: > > http://cgit.freedesktop.org/xorg/xserver/tree/os/utils.c#n440 > > Perhaps libevdev should do something like that too?
Note that this doesn't affect clock_gettime like the server's code does, it only affects the timestamps of the events as reported by the kernel. It's a wrapper around the EVIOCSCLOCKID ioctl and that only allows for CLOCK_MONOTONIC and CLOCK_REALTIME (as of 3.14-rc3). So using _COARSE here would merely yield -EINVAL. Cheers, Peter _______________________________________________ wayland-devel mailing list wayland-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/wayland-devel
