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From: Andrea Arcangeli <andrea@suse.de>
To: Hannes Reinecke <Hannes.Reinecke@suse.de>
Cc: Dave Hansen <haveblue@us.ibm.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Dumb question: BKL on reboot ?
Date: Fri, 22 Aug 2003 15:57:11 +0200	[thread overview]
Message-ID: <20030822135711.GN29612@dualathlon.random> (raw)
In-Reply-To: <3F45BA87.1060902@suse.de>

> >This can't be the lock_kernel, you see, there's no lock_kernel
> >invocation at all in the machine_restart_smp path.
> 
> Oh? sys_reboot() does call lock_kernel(). kernel/sys.c:303.

yes, I know, I meant that it's not spinning on the lock, sys_reboot gets
through lock_kernel w/o problems. It gets the lock successfully.

> Agreed, this smp_processor_id() == 0 thing is interesting. I'll try you 
> suggestion and see how far I'll progress.

thanks, that's the right fix as far as I can tell and the lock_kernel
would better stay to serialize concurrent sys_reboot.

Andrea

  reply	other threads:[~2003-08-23 18:02 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-08-20 10:22 Hannes Reinecke
2003-08-20 18:29 ` Andrew Morton
2003-08-20 18:35   ` David S. Miller
2003-08-20 20:23     ` Dave Hansen
2003-08-21  8:05       ` Hannes Reinecke
2003-08-21 15:41         ` Andrea Arcangeli
2003-08-21 15:55           ` Hannes Reinecke
2003-08-21 16:39             ` Andrea Arcangeli
2003-08-21 16:58               ` Andrea Arcangeli
2003-08-22  6:39               ` Hannes Reinecke
2003-08-22 13:57                 ` Andrea Arcangeli [this message]
2003-08-24 21:43                 ` Andrea Arcangeli
2003-08-21 15:33       ` Andrea Arcangeli
     [not found] <3F434BD1.9050704@suse.de.suse.lists.linux.kernel>
2003-08-20 10:49 ` Andi Kleen
2003-08-20 11:51   ` Hannes Reinecke
2003-08-20 12:03     ` Andi Kleen

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