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authorShawn Bohrer <shawn.bohrer@gmail.com>2010-10-27 15:34:54 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-27 18:03:18 -0700
commit95aac7b1cd224f568fb83937044cd303ff11b029 (patch)
tree24c08cfe031ecc0549cf3f7900e992a27044c4ad /include
parent231f3d393f63f6e3b505afa179999bba491d0f08 (diff)
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epoll: make epoll_wait() use the hrtimer range feature
This make epoll use hrtimers for the timeout value which prevents epoll_wait() from timing out up to a millisecond early. This mirrors the behavior of select() and poll(). Signed-off-by: Shawn Bohrer <shawn.bohrer@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Davide Libenzi <davidel@xmailserver.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/poll.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/poll.h b/include/linux/poll.h
index 600cc1fde64..56e76af7810 100644
--- a/include/linux/poll.h
+++ b/include/linux/poll.h
@@ -73,6 +73,8 @@ extern void poll_initwait(struct poll_wqueues *pwq);
extern void poll_freewait(struct poll_wqueues *pwq);
extern int poll_schedule_timeout(struct poll_wqueues *pwq, int state,
ktime_t *expires, unsigned long slack);
+extern long select_estimate_accuracy(struct timespec *tv);
+
static inline int poll_schedule(struct poll_wqueues *pwq, int state)
{