linux-kernel - Re: [PATCH 1/1 tip] perf top: Move hard coded list to /etc/perfconfig/symbols.skip

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Message-ID: <20090802195533.GE24486@elte.hu>
Date:	Sun, 2 Aug 2009 21:55:33 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Ray Lee <ray-lk@...rabbit.org>
Cc:	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Mike Galbraith <efault@....de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/1 tip] perf top: Move hard coded list to
	/etc/perfconfig/symbols.skip


* Ray Lee <ray-lk@...rabbit.org> wrote:

> On Mon, Jul 27, 2009 at 5:10 PM, Arnaldo Carvalho de
> Melo<acme@...hat.com> wrote:
> > This also paves the way to add more symbol lists to be filtered out,
> > spinlock anyone?
> 
> Generally, the way I've found is best to handle things like this is to either:
> 
> A. Have a fall-back list to use if the file isn't found, or
> B. Start with the fall-back list of symbols to filter, then add to
> them via /etc/... and ~/.perf/...
> 
> I like approaching things from the 'everything works even in a
> broken/hasty installation' point of view, and it's paid off for me.
> Sane defaults are a wonderfully useful thing.

Agreed.

Also, i'd not pollute /etc just yet, please lets define a good 
default built-in list like we have now, and perhaps enable the 
extension of it via .perf/config.

Tools should work well by default.

	Ingo
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