linux-kernel - Re: [PATCH 2/4] tracing: add event trace infrastructure

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Message-Id: <20090224203308.8d623e0b.akpm@linux-foundation.org>
Date:	Tue, 24 Feb 2009 20:33:08 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Theodore Tso <tytso@....edu>,
	Arjan van de Ven <arjan@...radead.org>,
	Pekka Paalanen <pq@....fi>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Jason Baron <jbaron@...hat.com>,
	Martin Bligh <mbligh@...gle.com>,
	Mathieu Desnoyers <compudj@...stal.dyndns.org>,
	"Frank Ch. Eigler" <fche@...hat.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Jens Axboe <jens.axboe@...cle.com>,
	Masami Hiramatsu <mhiramat@...hat.com>,
	Steven Rostedt <srostedt@...hat.com>
Subject: Re: [PATCH 2/4] tracing: add event trace infrastructure

On Tue, 24 Feb 2009 23:08:56 -0500 (EST) Steven Rostedt <rostedt@...dmis.org> wrote:

> > Gad, what a lot of stuff.
> > 
> > Use strncpy_from_user()?
> > 
> > Use strstrip()?
> > 
> > Why do we care about leading and trailing whitespace - user error!
> 
> This is because i want:
> 
>  cat available_events > set_event
> 
> to work.

:(

Why on earth do we keep on putting all these pretty-printers and
pretty-parsers into the kernel?  I mean, how hard is it for userspace
to read a text file, do some basic substitutions and print it out again?

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