linux-kernel - Re: [PATCH 19/22 -v7] trace preempt off critical timings

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Message-Id: <1201686038.28547.176.camel@lappy>
Date:	Wed, 30 Jan 2008 10:40:37 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Hellwig <hch@...radead.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	Gregory Haskins <ghaskins@...ell.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Tim Bird <tim.bird@...sony.com>,
	Sam Ravnborg <sam@...nborg.org>,
	"Frank Ch. Eigler" <fche@...hat.com>,
	Jan Kiszka <jan.kiszka@...mens.com>,
	John Stultz <johnstul@...ibm.com>,
	Arjan van de Ven <arjan@...radead.org>,
	Steven Rostedt <srostedt@...hat.com>
Subject: Re: [PATCH 19/22 -v7] trace preempt off critical timings


On Tue, 2008-01-29 at 22:15 -0500, Steven Rostedt wrote:

> +static DEFINE_PER_CPU(int, tracing_cpu);

Is the per-cpu tracing not also needed for irq off tracing?

Also, its not mentioned in the changelog.

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