From: Thomas Gleixner <tglx@linutronix.de>
To: Roman Zippel <zippel@linux-m68k.org>
Cc: Andrew Morton <akpm@osdl.org>,
LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>
Subject: [patch] hrtimer remove replace state check by BUG_ON
Date: Sun, 12 Mar 2006 17:57:57 +0100 [thread overview]
Message-ID: <1142182678.19916.514.camel@localhost.localdomain> (raw)
In-Reply-To: <1142180796.19916.497.camel@localhost.localdomain>
The rework of the hrtimer code showed a hard to track sporadic problem
on a testers machine. The !hrtimer_active check in the return path of
the timer callback function prevents requeueing of an enqueued timer.
Replace the check by a BUG_ON to get more info about this not yet
verified problem instead of hiding it away.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Index: linux-2.6.16-updates/kernel/hrtimer.c
===================================================================
--- linux-2.6.16-updates.orig/kernel/hrtimer.c
+++ linux-2.6.16-updates/kernel/hrtimer.c
@@ -631,9 +631,10 @@ static inline void run_hrtimer_queue(str
spin_lock_irq(&base->lock);
- if (restart != HRTIMER_NORESTART &&
- !hrtimer_active(timer))
+ if (restart != HRTIMER_NORESTART) {
+ BUG_ON(hrtimer_active(timer));
enqueue_hrtimer(timer, base);
+ }
}
set_curr_timer(base, NULL);
spin_unlock_irq(&base->lock);
next prev parent reply other threads:[~2006-03-12 16:57 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-12 10:37 [patch 0/8] hrtimer updates Thomas Gleixner
2006-03-12 10:37 ` [patch 1/8] hrtimer optimize softirq runqueues Thomas Gleixner
2006-03-12 10:37 ` [patch 2/8] Pass current time to hrtimer_forward() Thomas Gleixner
2006-03-12 10:37 ` [patch 3/8] posix-timer cleanup common_timer_get() Thomas Gleixner
2006-03-12 10:37 ` [patch 4/8] hrtimer simplify nanosleep Thomas Gleixner
2006-03-12 10:37 ` [patch 5/8] hrtimer remove state field Thomas Gleixner
2006-03-12 12:13 ` Roman Zippel
2006-03-12 13:10 ` Thomas Gleixner
2006-03-12 13:26 ` Roman Zippel
2006-03-12 13:35 ` Thomas Gleixner
2006-03-12 13:55 ` Roman Zippel
2006-03-12 14:15 ` Thomas Gleixner
2006-03-12 14:30 ` Roman Zippel
2006-03-12 14:54 ` Thomas Gleixner
2006-03-12 15:17 ` Roman Zippel
2006-03-12 15:41 ` Thomas Gleixner
2006-03-12 16:00 ` Roman Zippel
2006-03-12 16:26 ` Thomas Gleixner
2006-03-12 16:57 ` Thomas Gleixner [this message]
2006-03-16 1:05 ` Roman Zippel
2006-03-16 9:01 ` Thomas Gleixner
2006-03-17 22:07 ` Roman Zippel
2006-03-18 8:46 ` Thomas Gleixner
2006-03-12 10:37 ` [patch 6/8] Remove it_real_value calculation from proc/*/stat Thomas Gleixner
2006-03-12 10:37 ` [patch 7/8] Remove DEFINE_KTIME and ktime_to_clock_t() Thomas Gleixner
2006-03-12 10:37 ` [patch 8/8] Remove nsec_t typedef Thomas Gleixner
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