Re: [PATCH 4/4] input: evdev: only wake poll on EV_SYN

On Tue, Mar 22, 2011 at 06:04:04PM -0700, Jeff Brown wrote:

On SMP systems, it is possible for an evdev client blocked on poll()
to wake up and read events from the evdev ring buffer at the same
rate as they are enqueued.  This can result in high CPU usage,
particularly for MT devices, because the client ends up reading
events one at a time instead of reading complete packets.  This patch
ensures that the client only wakes from poll() when a complete packet
is ready to be read.

Doesn't this only help with very first packet after a pause in event
stream?

-- 
Dmitry