linux-kernel - Re: [PATCH 2/4] perf stat: add compile-time option to disable --big-num

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Date:	Thu, 20 Sep 2012 22:17:33 +0300
From:	Irina Tirdea <irina.tirdea@...il.com>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	mingo@...hat.com, acme@...stprotocols.net, a.p.zijlstra@...llo.nl,
	rostedt@...dmis.org, paulus@...ba.org, dsahern@...il.com,
	namhyung.kim@....com, linux-kernel@...r.kernel.org,
	Irina Tirdea <irina.tirdea@...el.com>
Subject: Re: [PATCH 2/4] perf stat: add compile-time option to disable --big-num

On Fri, Sep 14, 2012 at 8:40 AM, Ingo Molnar <mingo@...nel.org> wrote:
>
> * Irina Tirdea <irina.tirdea@...il.com> wrote:
>
>> From: Irina Tirdea <irina.tirdea@...el.com>
>>
>> In printf's format, ' is used to group the output with thousands' grouping
>> characters for decimal conversion. Bionic does not support ' for printf.
>
> Please try to solve compatibility without affecting the default
> output and big num is the default perf stat output.

Understood.

> Could the big num output be implemented within perf, without
> relying on glibc's printf implementation?
>

Yes. I'll write a function that does the grouping instead of using
printf and send it for review instead of this patch.

Thanks,
Irina
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