linux-kernel - Re: [RFC][PATCH 2/2] [PATCH 2/2] tracing: Make event based trace

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Message-ID: <1290082487.30543.99.camel@gandalf.stny.rr.com>
Date:	Thu, 18 Nov 2010 07:14:47 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Darren Hart <dvhart@...ux.intel.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"jason.wessel" <jason.wessel@...driver.com>,
	Ted Ts'o <tytso@....edu>
Subject: Re: [RFC][PATCH 2/2] [PATCH 2/2] tracing: Make event based
 trace_printk()

On Thu, 2010-11-18 at 06:58 -0500, Mathieu Desnoyers wrote:
> * Steven Rostedt (rostedt@...dmis.org) wrote:
> > From: Steven Rostedt <srostedt@...hat.com>
> > 
> > Add the trace_printk() that places the usage in the
> > /debug/tracing/events/printk directory.
> > 
> > Adding a trace_printk() into sched.c at line 2181, we have:
> 
> I'm curious: how do you handle two trace_printk on the same line ?
> 
> It might be OK to let the interface activate both at once, but nothing should
> crash per se.

You get 2181, and 2181-1

-- Steve


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