linux-kernel - Re: [PATCH 3/4] perf: Support for irq exclusion

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Message-ID: <20100521140623.GK30108@nowhere>
Date:	Fri, 21 May 2010 16:06:25 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Paul Mackerras <paulus@...ba.org>
Subject: Re: [PATCH 3/4] perf: Support for irq exclusion

On Fri, May 21, 2010 at 04:05:14PM +0200, Frederic Weisbecker wrote:
> Provide exclude_softirq and exclude_hardirq support in perf
> event attributes. This brings the final pieces to subscribe
> to any desired context granularity of profiling or tracing.
> 
> Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
> Cc: Ingo Molnar <mingo@...e.hu>
> Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
> Cc: Paul Mackerras <paulus@...ba.org>
> ---
>  include/linux/perf_event.h |    8 +++++---
>  kernel/perf_event.c        |   42 +++++++++++++++++++++++++++++++-----------
>  2 files changed, 36 insertions(+), 14 deletions(-)
> 
> diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
> index d939fc7..ca55ec5 100644
> --- a/include/linux/perf_event.h
> +++ b/include/linux/perf_event.h
> @@ -213,10 +213,12 @@ struct perf_event_attr {
>  				 *
>  				 *  See also PERF_RECORD_MISC_EXACT_IP
>  				 */
> -				precise_ip     :  2, /* skid constraint       */
> -				exclude_task   :  1, /* don't count task context */
> +				precise_ip	:  2, /* skid constraint */
> +				exclude_task	:  1, /* don't count task context */
> +				exclude_softirq	:  1, /* don't count softirq */
> +				exclude_hardirq	:  1, /* don't count hardirq */
>  
> -				__reserved_1   : 46;
> +				__reserved_1	: 45;


Should be 44.

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