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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200325142214.GD14102@kernel.org>
Date:   Wed, 25 Mar 2020 11:22:14 -0300
From:   Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf tools: Add missing Intel CPU events to parser

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@...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

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

- Arnaldo