linux-kernel - Re: [PATCH 2/2] perf tools: Make Power7 events available for perf

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Message-ID: <20130619161446.GB13326@us.ibm.com>
Date:	Wed, 19 Jun 2013 09:14:46 -0700
From:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
To:	Runzhen Wang <runzhen@...ux.vnet.ibm.com>
Cc:	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	michael@...erman.id.au, paulus@...ba.org, acme@...hat.com,
	xiaoguangrong@...ux.vnet.ibm.com, icycoder@...il.com
Subject: Re: [PATCH 2/2] perf tools: Make Power7 events available for perf

Runzhen Wang [runzhen@...ux.vnet.ibm.com] wrote:
| Power7 supports over 530 different perf events but only a small
| subset of these can be specified by name, for the remaining
| events, we must specify them by their raw code:
| 
|         perf stat -e r2003c <application>
| 
| This patch makes all the POWER7 events available in sysfs.
| So we can instead specify these as:
| 
|         perf stat -e 'cpu/PM_CMPLU_STALL_DFU/' <application>
| 
| where PM_CMPLU_STALL_DFU is the r2003c in previous example.
| 
| Before this patch is applied, the size of power7-pmu.o is:
| 
| $ size arch/powerpc/perf/power7-pmu.o
|    text	   data	    bss	    dec	    hex	filename
|    3073	   2720	      0	   5793	   16a1	arch/powerpc/perf/power7-pmu.o
| 
| and after the patch is applied, it is:
| 
| $ size arch/powerpc/perf/power7-pmu.o
|    text	   data	    bss	    dec	    hex	filename
|   14451	  31112	      0	  45563	   b1fb	arch/powerpc/perf/power7-pmu.o
| 
| Signed-off-by: Runzhen Wang <runzhen@...ux.vnet.ibm.com>

Reviewed-by: Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>

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