linux-kernel - Re: [PATCH 5/6][v4]: perf: Create a sysfs entry for Power event format

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Message-ID: <20130227012736.GD5819@concordia>
Date:	Wed, 27 Feb 2013 12:27:37 +1100
From:	Michael Ellerman <michael@...erman.id.au>
To:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Andi Kleen <ak@...ux.intel.com>, robert.richter@....com,
	Anton Blanchard <anton@....ibm.com>,
	linux-kernel@...r.kernel.org,
	Stephane Eranian <eranian@...gle.com>, linuxppc-dev@...abs.org,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Jiri Olsa <jolsa@...hat.com>
Subject: Re: [PATCH 5/6][v4]: perf: Create a sysfs entry for Power event
 format

On Tue, Jan 22, 2013 at 10:26:13PM -0800, Sukadev Bhattiprolu wrote:
> 
> [PATCH 5/6][v4]: perf: Create a sysfs entry for Power event format
> 
> Create a sysfs entry, '/sys/bus/event_source/devices/cpu/format/event'
> which describes the format of a POWER cpu.

> diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c
> index fa476d5..4ae044b 100644
> --- a/arch/powerpc/perf/core-book3s.c
> +++ b/arch/powerpc/perf/core-book3s.c
> @@ -1315,6 +1315,18 @@ ssize_t power_events_sysfs_show(struct device *dev,
>  	return sprintf(page, "event=0x%02llx\n", pmu_attr->id);
>  }
>  
> +PMU_FORMAT_ATTR(event, "config:0-20");

Just noticed, it's 20 bits, which is 0-19.

cheers
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