diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2009-03-24 13:18:16 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-06 09:30:32 +0200 |
| commit | c7138f37f905bb7987b1f9f5a8ee73667db39f25 (patch) | |
| tree | 8d1c2bf404f1179d35e8b35b0166c7bf0b39840e /include/linux/input-polldev.h | |
| parent | f66c6b2066b44d4ab8e8ac1ee4cae543738fe2ac (diff) | |
perf_counter: fix perf_poll()
Impact: fix kerneltop 100% CPU usage
Only return a poll event when there's actually been one, poll_wait()
doesn't actually wait for the waitq you pass it, it only enqueues
you on it.
Only once all FDs have been iterated and none of thm returned a
poll-event will it schedule().
Also make it return POLL_HUP when there's not mmap() area to read from.
Further, fix a silly bug in the write code.
Reported-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arjan van de Ven <arjan@infradead.org>
Orig-LKML-Reference: <1237897096.24918.181.camel@twins>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/input-polldev.h')
0 files changed, 0 insertions, 0 deletions