linux-kernel - Re: [PATCH v2 4/6] trace: Add tracepoints to reschedule interrupt handler

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Message-ID: <1311855170.2617.169.camel@laptop>
Date:	Thu, 28 Jul 2011 14:12:50 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Vaibhav Nagarnaik <vnagarnaik@...gle.com>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Michael Rubin <mrubin@...gle.com>,
	David Sharp <dhsharp@...gle.com>, linux-kernel@...r.kernel.org,
	x86@...nel.org
Subject: Re: [PATCH v2 4/6] trace: Add tracepoints to reschedule interrupt
 handler

On Wed, 2011-07-27 at 11:57 -0700, Vaibhav Nagarnaik wrote:
> @@ -2578,6 +2579,7 @@ static void sched_ttwu_pending(void)
>         struct rq *rq = this_rq();
>         struct task_struct *list = xchg(&rq->wake_list, NULL);
>  
> +       trace_reschedule_interrupt_entry(0);
>         if (!list)
>                 return;
>  
> @@ -2610,6 +2612,7 @@ void scheduler_ipi(void)
>         irq_enter();
>         sched_ttwu_do_pending(list);
>         irq_exit();
> +       trace_reschedule_interrupt_exit(0);
>  } 

That's just wrong..

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