linux-kernel - Re: [PATCH] perf tools: Add missing Intel CPU events to parser

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Date:   Wed, 25 Mar 2020 14:53:50 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
Cc:     Adrian Hunter <adrian.hunter@...el.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf tools: Add missing Intel CPU events to parser

On Wed, Mar 25, 2020 at 10:15:49AM -0300, Arnaldo Carvalho de Melo wrote:
> Em Wed, Mar 25, 2020 at 11:33:45AM +0100, Jiri Olsa escreveu:
> > On Tue, Mar 24, 2020 at 05:04:43PM +0200, Adrian Hunter wrote:
> > > perf list expects CPU events to be parseable by name, e.g.
> 
> > >     # perf list | grep el-capacity-read
> > >       el-capacity-read OR cpu/el-capacity-read/          [Kernel PMU event]
> 
> > > But the event parser does not recognize them that way, e.g.
> 
> > >     # perf test -v "Parse event"
> > >     <SNIP>
> > >     running test 54 'cycles//u'
> > >     running test 55 'cycles:k'
> > >     running test 0 'cpu/config=10,config1,config2=3,period=1000/u'
> > >     running test 1 'cpu/config=1,name=krava/u,cpu/config=2/u'
> > >     running test 2 'cpu/config=1,call-graph=fp,time,period=100000/,cpu/config=2,call-graph=no,time=0,period=2000/'
> > >     running test 3 'cpu/name='COMPLEX_CYCLES_NAME:orig=cycles,desc=chip-clock-ticks',period=0x1,event=0x2/ukp'
> > >     -> cpu/event=0,umask=0x11/
> > >     -> cpu/event=0,umask=0x13/
> > >     -> cpu/event=0x54,umask=0x1/
> > >     failed to parse event 'el-capacity-read:u,cpu/event=el-capacity-read/u', err 1, str 'parser error'
> > >     event syntax error: 'el-capacity-read:u,cpu/event=el-capacity-read/u'
> > >                            \___ parser error test child finished with 1
> > >     ---- end ----
> > >     Parse event definition strings: FAILED!
> 
> > > Fix by adding missing Intel CPU events to the event parser.
> > > Missing events were found by using:
> 
> > >     grep -r EVENT_ATTR_STR arch/x86/events/intel/core.c
> > > 
> > > Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
> > 
> > Acked-by: Jiri Olsa <jolsa@...hat.com>
> 
> So, I'm not being able to reproduce this, what an I missing?

I think you need to be on some really recent intel
which defines events which we did not covered yet
like el-capacity-write in icelake

jirka