From: Oleg Nesterov <oleg@tv-sign.ru>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@osdl.org>, Linus Torvalds <torvalds@osdl.org>,
LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>
Subject: Re: PATCH? hrtimer_wakeup: fix a theoretical race wrt rt_mutex_slowlock()
Date: Mon, 6 Nov 2006 17:15:02 +0300 [thread overview]
Message-ID: <20061106141502.GA164@oleg> (raw)
In-Reply-To: <Pine.LNX.4.58.0611060729370.14553@gandalf.stny.rr.com>
On 11/06, Steven Rostedt wrote:
>
> Acked-by: Steven Rostedt <rostedt@goodmis.org>
Thanks.
But on the other hand we probably have a similar code (set condition +
wake_up_process()) in other places too, and __wake_up(wait_queue_head_t)
has (in theory) the same problem. Probably we can add something like
smp_wmb_unless_spin_lock_implies_memory_barrier_on_this_arch()
somewhere in try_to_wake_up(). I dunno.
Oleg.
next prev parent reply other threads:[~2006-11-06 13:12 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-05 19:34 PATCH? hrtimer_wakeup: fix a theoretical race wrt rt_mutex_slowlock() Oleg Nesterov
2006-11-05 22:29 ` Linus Torvalds
2006-11-05 22:53 ` Steven Rostedt
2006-11-05 23:08 ` Oleg Nesterov
2006-11-06 3:08 ` Linus Torvalds
2006-11-06 12:09 ` Oleg Nesterov
2006-11-06 12:26 ` Steven Rostedt
2006-11-05 22:53 ` Oleg Nesterov
2006-11-06 8:57 ` Benjamin Herrenschmidt
2006-11-06 12:35 ` Steven Rostedt
2006-11-06 20:53 ` Benjamin Herrenschmidt
2006-11-06 21:17 ` Steven Rostedt
2006-11-06 21:41 ` Benjamin Herrenschmidt
2006-11-06 12:31 ` Steven Rostedt
2006-11-06 14:15 ` Oleg Nesterov [this message]
2006-11-06 14:11 ` Steven Rostedt
2006-11-06 15:05 ` Steven Rostedt
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