linux-kernel - Re: [PATCH tj-percpu 1/3] percpu: kill compile warning in pcpu_populate

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Message-ID: <20090302090758.GC10783@elte.hu>
Date:	Mon, 2 Mar 2009 10:07:58 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Tejun Heo <tj@...nel.org>
Cc:	x86@...nel.org, Johannes Weiner <hannes@...xchg.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Rusty Russell <rusty@...tcorp.com.au>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH tj-percpu 1/3] percpu: kill compile warning in
	pcpu_populate_chunk()


* Tejun Heo <tj@...nel.org> wrote:

> Impact: remove compile warning
> 
> Mark local variable map_end in pcpu_populate_chunk() with
> uninitialized_var().  The variable is always used in tandem with
> map_start and guaranteed to be initialized before use but gcc doesn't
> understand that.
> 
> Signed-off-by: Tejun Heo <tj@...nel.org>
> Reported-by: Ingo Molnar <mingo@...e.hu>
> ---
> This the first of three misc fix patches for #tj-percpu.  Patches are
> also available in the tj-percpu git tree.
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc.git tj-percpu

Pulled, thanks Tejun.

	Ingo
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