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From: Ingo Molnar <mingo@elte.hu>
To: Takao Indoh <indou.takao@soft.fujitsu.com>
Cc: linux-kernel@vger.kernel.org,
Christoph Hellwig <hch@infradead.org>, Andi Kleen <ak@muc.de>
Subject: Re: [3/4] [PATCH]Diskdump - yet another crash dump function
Date: Thu, 17 Jun 2004 15:11:40 +0200 [thread overview]
Message-ID: <20040617131140.GA26107@elte.hu> (raw)
In-Reply-To: <20040617131016.GA25920@elte.hu>
* Ingo Molnar <mingo@elte.hu> wrote:
> * Takao Indoh <indou.takao@soft.fujitsu.com> wrote:
>
> > It sounds good because change of timer/tasklet code is not needed.
> > But, I wonder whether this method is safe. For example, if kernel
> > crashes because of problem of timer, clearing lists may be dangerous
> > before dumping. Is it possible to clear all timer lists safely?
>
> yes it can be done safely - just INIT_LIST_HEAD() all the timer list
> heads - like init_timers_cpu() does.
obviously this only involves the dumping CPU - no other CPU will run any
kernel code. On SMP you should also clear the timer spinlock of the
dumping CPU's timer base, if the crash happened within the timer code.
Ingo
next prev parent reply other threads:[~2004-06-17 13:12 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-27 9:33 [PATCH]Diskdump - yet another crash dump function Takao Indoh
2004-05-27 12:36 ` [1/4] " Takao Indoh
2004-05-27 12:37 ` [2/4] " Takao Indoh
2004-05-27 13:48 ` Christoph Hellwig
2004-05-28 2:13 ` Takao Indoh
2004-05-27 12:39 ` [3/4] " Takao Indoh
2004-05-27 13:51 ` Christoph Hellwig
2004-05-27 21:04 ` Ingo Molnar
2004-06-17 11:34 ` Takao Indoh
2004-06-17 12:00 ` Christoph Hellwig
2004-06-17 12:45 ` Takao Indoh
2004-06-17 12:13 ` Ingo Molnar
2004-06-17 12:18 ` Christoph Hellwig
2004-06-17 12:32 ` Ingo Molnar
2004-06-17 14:56 ` Jeff Moyer
2004-06-17 15:45 ` Nobuhiro Tachino
2004-06-17 13:04 ` Takao Indoh
2004-06-17 13:10 ` Ingo Molnar
2004-06-17 13:11 ` Ingo Molnar [this message]
2004-06-17 13:15 ` Ingo Molnar
2004-06-17 14:00 ` Takao Indoh
2004-06-17 14:45 ` Nobuhiro Tachino
2004-06-17 14:53 ` Takao Indoh
2004-06-18 12:02 ` Takao Indoh
2004-06-21 20:40 ` Nobuhiro Tachino
2004-06-22 10:19 ` Ingo Molnar
2004-06-23 12:11 ` Takao Indoh
2004-06-23 13:00 ` Takao Indoh
2004-06-21 5:46 ` Keith Owens
2004-06-21 6:25 ` Takao Indoh
2004-06-22 4:21 ` Rob Landley
2004-06-22 7:56 ` Ingo Molnar
2004-05-28 9:38 ` Takao Indoh
2004-05-27 12:40 ` [4/4] " Takao Indoh
2004-05-27 13:34 ` [Document][PATCH]Diskdump " Takao Indoh
2004-06-03 13:10 ` [PATCH]Diskdump " Pavel Machek
2004-06-04 0:44 ` Takao Indoh
2004-06-04 9:33 ` Pavel Machek
[not found] <20pwP-55v-5@gated-at.bofh.it>
[not found] ` <20suK-7C5-11@gated-at.bofh.it>
[not found] ` <20tAB-5c-31@gated-at.bofh.it>
[not found] ` <20AiB-69m-17@gated-at.bofh.it>
2004-05-27 21:31 ` [3/4] " Andi Kleen
2004-05-28 7:38 ` Ingo Molnar
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