linux-kernel - Re: [PATCH] perf tools: Remove cast of non-varadic function to varadic

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Message-ID: <87mwlo4l1m.fsf@sejong.aot.lge.com>
Date:	Fri, 01 Nov 2013 16:51:17 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc:	Michael Hudson-Doyle <michael.hudson@...aro.org>,
	linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...hat.com>,
	Will Deacon <will.deacon@....com>,
	Jean Pihet <jean.pihet@...aro.org>,
	Namhyung Kim <namhyung.kim@....com>
Subject: Re: [PATCH] perf tools: Remove cast of non-varadic function to varadic

Hi Arnaldo and Michael,

On Thu, 31 Oct 2013 18:09:50 -0200, Arnaldo Carvalho de Melo wrote:
> Em Thu, Oct 31, 2013 at 12:50:25PM -0700, Michael Hudson-Doyle escreveu:
>> 4fb71074a570 (perf ui/hist: Consolidate hpp helpers) introduced a cast of
>> percent_color_snprintf to a function pointer type with varargs.  Change
>> percent_color_snprintf to be varadic and remove the cast.
>> 
>> The symptom of this was all percentages being reported as 0.00% in perf
>> report --stdio output on armhf.
>
> git bisect + visual inspection, right? Anyway, good catch, interesting
> it caused problems on just one arch, or have you tested this in other
> arches?
>
> Namhyung?

Yes, it'll affect the way of passing parameter on some arch's -  I only
tested it on x86_64.  So,

Acked-by: Namhyung Kim <namhyung@...nel.org>

Thanks,
Namhyung
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