linux-kernel - Re: Warning from ring buffer code (Was: Re: linux-next: tip tree build warning)

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Date:	Sat, 12 Sep 2009 09:39:06 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	Steven Rostedt <srostedt@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Warning from ring buffer code (Was: Re: linux-next: tip tree
	build warning)


* Stephen Rothwell <sfr@...b.auug.org.au> wrote:

> Hi Steve,
> 
> On Tue, 04 Aug 2009 12:24:49 -0400 Steven Rostedt <srostedt@...hat.com> wrote:
> >
> > On Tue, 2009-08-04 at 16:16 +1000, Stephen Rothwell wrote:
> > > 
> > > Today's linux-next build (powerpc ppc64_defconfig) produced these warnings:
> > > 
> > > kernel/trace/ring_buffer.c: In function 'rb_head_page_set':
> > > kernel/trace/ring_buffer.c:704: warning: initialization makes pointer from integer without a cast
> > > kernel/trace/ring_buffer.c:704: warning: initialization makes pointer from integer without a cast
> > > kernel/trace/ring_buffer.c: In function 'rb_head_page_replace':
> > > kernel/trace/ring_buffer.c:797: warning: initialization makes integer from pointer without a cast
> > > 
> > > Introduced by commit 77ae365eca895061c8bf2b2e3ae1d9ea62869739
> > > ("ring-buffer: make lockless").
> > 
> > Thanks, I'll take a look at it.
> 
> Now that this is in Linus' tree, can we have a fix for the waning, 
> please?

The first warning got fixed 1.5 months ago - the second one at line 
797 is still there but harmless - you can ignore it for now, it will 
be fixed.

	Ingo
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