From: "Liu, Hong" <hong.liu@intel.com>
To: george@mvista.com
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 2.6] fix POSIX timers expire before their scheduled time
Date: Thu, 17 Mar 2005 10:20:22 +0800 [thread overview]
Message-ID: <1111026022.2994.54.camel@devlinux-hong> (raw)
POSIX says: POSIX timers should not expire before their scheduled time.
Due to the timer started between jiffies, there are cases that the timer
will expire before its scheduled time.
This patch ensures timers will not expire early.
--- a/kernel/posix-timers.c 2005-03-10 15:46:27.329333664 +0800
+++ b/kernel/posix-timers.c 2005-03-10 15:50:11.884196136 +0800
@@ -957,7 +957,8 @@
&expire_64, &(timr->wall_to_prev))) {
return -EINVAL;
}
- timr->it_timer.expires = (unsigned long)expire_64;
+ timr->it_timer.expires = (unsigned long)expire_64 + 1;
tstojiffie(&new_setting->it_interval, clock->res, &expire_64);
timr->it_incr = (unsigned long)expire_64;
next reply other threads:[~2005-03-17 2:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-17 2:20 Liu, Hong [this message]
2005-03-17 6:29 ` [PATCH 2.6] fix POSIX timers expire before their scheduled time George Anzinger
2005-03-17 6:48 ` Hong Liu
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