linux-kernel - Re: [PATCH 1/2] trace,x86: Add tracepoint to x86 timer interrupt handler

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Message-ID: <alpine.LFD.2.02.1109211053430.2723@ionos>
Date:	Wed, 21 Sep 2011 11:01:35 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Vaibhav Nagarnaik <vnagarnaik@...gle.com>
cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Steven Rostedt <rostedt@...dmis.org>,
	Michael Rubin <mrubin@...gle.com>,
	David Sharp <dhsharp@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>, x86@...nel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 1/2] trace,x86: Add tracepoint to x86 timer interrupt
 handler

On Fri, 29 Jul 2011, Vaibhav Nagarnaik wrote:

> The x86 timer interrupt handler is the only handler not traced in the
> irq/irq_handler_{entry|exit} trace events.

Nonsense. The timer irq (irq0) comes via the genirq interrupt handling
and not via a special vector. So it's traced already.
 
Thanks,

	tglx
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