linux-kernel - Re: [RFC PATCH] perf tool: Add a global variable "const char *input

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Date:	Thu, 20 Sep 2012 12:05:51 -0300
From:	Arnaldo Carvalho de Melo <acme@...hat.com>
To:	Feng Tang <feng.tang@...el.com>
Cc:	mingo@...e.hu, a.p.zijlstra@...llo.nl, andi@...stfloor.org,
	namhyung@...nel.org, dsahern@...il.com,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH] perf tool: Add a global variable "const char
 *input_name"

Em Thu, Sep 20, 2012 at 10:19:39PM +0800, Feng Tang escreveu:
> Currently many perf ommands annotate/evlist/report/script/lock etc
> all support "-i" option to chose a specific perf data, and all
> of them create a local "input_name" to save the file name for
> that perf data.
> 
> So adding a global variable could unify all those local ones, and
> it will also be useful for other codes which need to know the file name.

But I think the input_name should be passed as a parameter to whoever
needs it. Think about 'perf diff', for instance, it deals with two
perf.data files.

In general I think we should _remove_ more globals :-)

- Arnaldo
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