linux-kernel - Re: [PATCH v21 16/19] perf, tools: Make alias matching case-insensitive

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Date:   Tue, 4 Oct 2016 10:19:11 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>,
        peterz@...radead.org, maddy@...ux.vnet.ibm.com,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        Jiri Olsa <jolsa@...nel.org>, Andi Kleen <andi@...stfloor.org>
Subject: Re: [PATCH v21 16/19] perf, tools: Make alias matching
 case-insensitive

On Mon, Oct 03, 2016 at 09:47:06PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Thu, Sep 15, 2016 at 03:24:53PM -0700, Sukadev Bhattiprolu escreveu:
> > From: Andi Kleen <ak@...ux.intel.com>
> > 
> > Make alias matching the events parser case-insensitive. This is useful
> > with the JSON events. perf uses lower case events, but the CPU manuals
> > generally use upper case event names. The JSON files use lower
> > case by default too. But if we search case insensitively then
> > users can cut-n-paste the upper case event names.
> > 
> > So the following works:
> > 
> > % perf stat -e BR_INST_EXEC.TAKEN_INDIRECT_NEAR_CALL true
> > 
> >  Performance counter stats for 'true':
> > 
> >                305      BR_INST_EXEC.TAKEN_INDIRECT_NEAR_CALL
> > 
> >        0.000492799 seconds time elapsed
> 
> So now trying to figure this out:
> 
> [acme@...et linux]$ perf stat -e br_inst_exec.all_direct_near_call true
> event syntax error: 'br_inst_exec.all_direct_near_call'
>                      \___ 'period' is not usable in 'perf stat'
> Run 'perf list' for a list of valid events

looks like you need also this one:
  155128eaa62f Allow period= in perf stat CPU event descriptions.

jirka