linux-kernel - Re: [PATCH] perf: Support for Openembedded/Yocto -dbg packages

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Date:	Wed, 18 Sep 2013 11:08:44 -0300
From:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Waiman Long <Waiman.Long@...com>,
	Stephane Eranian <eranian@...gle.com>,
	Jiri Olsa <jolsa@...hat.com>, David Ahern <dsahern@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] perf: Support for Openembedded/Yocto -dbg packages

Em Wed, Sep 18, 2013 at 03:29:03PM +0200, Ingo Molnar escreveu:
> * Arnaldo Carvalho de Melo <acme@...stprotocols.net> wrote:
> > Em Wed, Sep 18, 2013 at 12:18:01PM +0200, Peter Zijlstra escreveu:
> > > len += snprintf(str + len, size - len, ...);
> > > len += snprintf(str + len, size - len, ...);

> > And avoid snprintf like the plague, use scnprintf instead...  See
> > e7f01d1e3d8d501deb8abeaa269d5d48a703b8b0 for details :-)

> Hm, could we do:

> 	#define snprintf scnprintf
> or:
> 	#define snprintf(x...) BUILD_BUG()
> ?

Yes, I prefer the later, with a short explanation, will do.

- Arnaldo
 
> I don't think there's any valid code, except printf wrappers (which we 
> don't have in perf), where the semantics of snprintf() would be needed.
> 
> Thanks,
> 
> 	Ingo
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