linux-kernel - Re: [PATCH v2 1/2] Replace if statement with WARN_ON_ONCE() in cmci

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Message-ID: <20121019140720.GA27454@kroah.com>
Date:	Fri, 19 Oct 2012 07:07:20 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Tang Chen <tangchen@...fujitsu.com>
Cc:	stable@...r.kernel.org, tony.luck@...el.com, bp@...64.org,
	tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
	miaox@...fujitsu.com, laijs@...fujitsu.com, wency@...fujitsu.com,
	x86@...nel.org, linux-edac@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] Replace if statement with WARN_ON_ONCE() in
 cmci_rediscover().

On Fri, Oct 19, 2012 at 01:45:27PM +0800, Tang Chen wrote:
> cmci_rediscover() is only called by the CPU_POST_DEAD event handler,
> which means the corresponding cpu has already dead. As a result, it
> won't be accessed in the for_each_online_cpu loop.
> So, we could change the if(cpu == dying) statement into a WARN_ON_ONCE().
> 
> Signed-off-by: Tang Chen <tangchen@...fujitsu.com>
> ---
>  arch/x86/kernel/cpu/mcheck/mce_intel.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)

<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read Documentation/stable_kernel_rules.txt
for how to do this properly.

</formletter>
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