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

Arnaldo Carvalho de Melo
2020-03-25T14:22:20Z

Em Wed, Mar 25, 2020 at 02:53:50PM +0100, Jiri Olsa escreveu:
> 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@intel.com>
> > >
> > > Acked-by: Jiri Olsa <jolsa@redhat.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

That is why I tried with el-capacity, which is moved to the parser as
well, I've replaced el-capacity-read, which I don't have in this Kaby
Lake machine, with el-capacity, that is present:

[root@seventh ~]# perf list | grep el-capacity
el-capacity OR cpu/el-capacity/ [Kernel PMU event]
[root@seventh ~]#

- Arnaldo