linux-kernel - Re: [tip:tracing/core] tracing/filters: Provide basic regex support

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Date:	Mon, 28 Sep 2009 10:50:51 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	linux-kernel@...r.kernel.org, mingo@...hat.com, hpa@...or.com,
	tzanussi@...il.com, lizf@...fujitsu.com, tglx@...utronix.de,
	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:tracing/core] tracing/filters: Provide basic regex support

On Sat, Sep 26, 2009 at 06:10:05AM -0400, Steven Rostedt wrote:
> On Fri, 2009-09-25 at 06:19 +0000, tip-bot for Frederic Weisbecker
> wrote:
> > Commit-ID:  1889d20922d14a97b2099fa4d47587217c0ba48b
> > Gitweb:     http://git.kernel.org/tip/1889d20922d14a97b2099fa4d47587217c0ba48b
> > Author:     Frederic Weisbecker <fweisbec@...il.com>
> > AuthorDate: Thu, 24 Sep 2009 21:10:44 +0200
> > Committer:  Frederic Weisbecker <fweisbec@...il.com>
> > CommitDate: Thu, 24 Sep 2009 21:39:27 +0200
> > 
> > tracing/filters: Provide basic regex support
> > 
> > This patch provides basic support for regular expressions in filters.
> > 
> > It supports the following types of regexp:
> > 
> > - *match_beginning
> > - *match_middle*
> > - match_end*
> > - !don't match
> > 
> > Example:
> > 	cd /debug/tracing/events/bkl/lock_kernel
> > 	echo 'file == "*reiserfs*"' > filter
> > 	echo 1 > enable
> 
> Darn! I need to keep up with my email more. Someone asked me at my
> ftrace tutorial if the filters can take regex's.  I told them that I
> don't think so. Of course, my tutorial was on 2.6.31 so I was still
> correct. But it would have been nice if I told them that it will in
> 2.6.32 or 33.
> 
> -- Steve


Hehe :-)

That said I guess it should be more for .33 than .32 I guess.

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