From: Peter Zijlstra <peterz@infradead.org>
To: "Liu, Chuansheng" <chuansheng.liu@intel.com>
Cc: "'linux-kernel@vger.kernel.org' (linux-kernel@vger.kernel.org)"
<linux-kernel@vger.kernel.org>, "kay@vrfy.org" <kay@vrfy.org>,
"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
"mingo@elte.hu" <mingo@elte.hu>
Subject: RE: [PATCH] printk: fixing the deadlock when calling printk in nmi handle
Date: Wed, 04 Jul 2012 16:09:17 +0200 [thread overview]
Message-ID: <1341410957.2507.120.camel@laptop> (raw)
In-Reply-To: <1341409177.2507.117.camel@laptop>
On Wed, 2012-07-04 at 15:39 +0200, Peter Zijlstra wrote:
> > Anyway, in nmi handler, calling printk is dangerous. This patch is for this case.
>
> But its ugly and decreases reliability.. Your 'solution' is to
> basically ignore serialization and pray, that's not a solution, that's
> gambling.
If you want to fix it, do something like:
http://marc.info/?l=linux-kernel&m=132446646923333
next prev parent reply other threads:[~2012-07-04 14:09 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-04 13:00 [PATCH] printk: fixing the deadlock when calling printk in nmi handle Liu, Chuansheng
2012-07-04 13:22 ` Peter Zijlstra
2012-07-04 13:30 ` Liu, Chuansheng
2012-07-04 13:39 ` Peter Zijlstra
2012-07-04 14:09 ` Peter Zijlstra [this message]
2012-07-04 14:12 ` Peter Zijlstra
2012-07-04 14:18 ` Liu, Chuansheng
2012-07-04 14:46 ` Liu, Chuansheng
2012-07-04 14:50 ` Peter Zijlstra
2012-07-04 14:52 ` Peter Zijlstra
2012-07-04 15:06 ` Liu, Chuansheng
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