From: Borislav Petkov <bp@alien8.de>
To: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Borislav Petkov <bp@amd64.org>,
tony.luck@intel.com, tglx@linutronix.de, mingo@redhat.com,
hpa@zytor.com, miaox@cn.fujitsu.com, laijs@cn.fujitsu.com,
wency@cn.fujitsu.com, x86@kernel.org, linux-edac@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 1/2] Replace if statement with WARN_ON_ONCE() in cmci_rediscover().
Date: Mon, 22 Oct 2012 12:14:42 +0200 [thread overview]
Message-ID: <20121022101442.GB8352@liondog.tnic> (raw)
In-Reply-To: <5084AB10.7010807@cn.fujitsu.com>
On Mon, Oct 22, 2012 at 10:10:24AM +0800, Tang Chen wrote:
> I don't why before we just jumped over it. But I think if we have an
> online cpu == dying here, it must be wrong. So I think we should warn
> it, not just jump over it.
Why do we need to warn? What good would that bring us?
AFAICT, the check in cmci_rediscover is there to make sure we absolutely
don't rediscover on the dying cpu. I think it is a safety precaution in
concurrency scenarios between cpu hotplug and mce code.
Thanks.
--
Regards/Gruss,
Boris.
next prev parent reply other threads:[~2012-10-22 10:14 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-19 5:45 [PATCH v2 0/2] Do not change worker's running cpu " Tang Chen
2012-10-19 5:45 ` [PATCH v2 1/2] Replace if statement with WARN_ON_ONCE() " Tang Chen
2012-10-19 14:07 ` Greg KH
2012-10-19 16:40 ` Borislav Petkov
2012-10-22 2:10 ` Tang Chen
2012-10-22 10:14 ` Borislav Petkov [this message]
2012-10-23 1:35 ` Tang Chen
2012-10-23 2:55 ` Tang Chen
2012-10-23 9:52 ` Borislav Petkov
2012-10-23 10:17 ` Miao Xie
2012-10-23 10:20 ` Borislav Petkov
2012-10-23 10:34 ` Miao Xie
2012-10-23 13:14 ` Borislav Petkov
2012-10-23 11:30 ` Tang Chen
2012-10-23 14:17 ` Borislav Petkov
2012-10-23 16:16 ` Luck, Tony
2012-10-24 1:31 ` Tang Chen
2012-10-19 5:45 ` [PATCH v2 2/2] Do not change worker's running cpu " Tang Chen
2012-10-19 16:42 ` Borislav Petkov
2012-10-19 17:21 ` Luck, Tony
2012-10-22 3:33 ` Tang Chen
2012-10-22 10:18 ` Borislav Petkov
2012-10-23 1:30 ` Tang Chen
2012-10-19 7:21 ` [PATCH v2 0/2] " Tang Chen
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