linux-kernel - Re: [PATCH 2/2] ftrace: disable tracing on acpi idle calls

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Message-ID: <20080726124230.GE20713@elte.hu>
Date:	Sat, 26 Jul 2008 14:42:30 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Linus Torvalds <torvalds@...l.org>,
	Steven Rostedt <srostedt@...hat.com>
Subject: Re: [PATCH 2/2] ftrace: disable tracing on acpi idle calls


* Steven Rostedt <rostedt@...dmis.org> wrote:

> The acpi idle waits calls local_irq_save and then uses mwait to go 
> into idle. The tracer gets reenabled at local_irq_save but does not 
> detect that the idle allows for wake ups.
> 
> This patch adds code to disable the tracing when acpi puts the CPU to 
> idle.

applied to tip/tracing/urgent - thanks Steve.

	Ingo
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