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Re: [PATCHv2 0/9] perf stat: Separate shadow counters code

Started byArnaldo Carvalho de Melo <acme@kernel.org>
First post2015-06-04 00:30 +0200
Last post2015-06-04 00:50 +0200
Articles 3 — 2 participants

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  Re: [PATCHv2 0/9] perf stat: Separate shadow counters code Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-06-04 00:30 +0200
    Re: [PATCHv2 0/9] perf stat: Separate shadow counters code Jiri Olsa <jolsa@redhat.com> - 2015-06-04 00:40 +0200
      Re: [PATCHv2 0/9] perf stat: Separate shadow counters code Arnaldo Carvalho de Melo <acme@kernel.org> - 2015-06-04 00:50 +0200

#1158102 — Re: [PATCHv2 0/9] perf stat: Separate shadow counters code

FromArnaldo Carvalho de Melo <acme@kernel.org>
Date2015-06-04 00:30 +0200
SubjectRe: [PATCHv2 0/9] perf stat: Separate shadow counters code
Message-ID<pxpkC-6jA-7@gated-at.bofh.it>
Em Wed, Jun 03, 2015 at 07:07:05PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Wed, Jun 03, 2015 at 04:25:50PM +0200, Jiri Olsa escreveu:
> > hi,
> > sending cleanup/move of shadow counters. I need it
> > for my other changes of stat scripting, but I think
> > it can stand alone as a cleanup.
> > 
> > v2 changes:
> >   - move evsel id into 'struct perf_stat'
> >     and change the id functions namespace
> 
> Thanks, applied.

15: struct perf_event_attr setup                             :sh: line 1: 27101 Segmentation fault      (core dumped) PERF_TEST_ATTR=/tmp/tmptb9pWi /home/acme/bin/perf stat -o /tmp/tmptb9pWi/perf.data kill > /dev/null 2>&1
sh: line 1: 27104 Segmentation fault      (core dumped) PERF_TEST_ATTR=/tmp/tmpWgRK9D /home/acme/bin/perf stat -o /tmp/tmpWgRK9D/perf.data -d kill > /dev/null 2>&1
sh: line 1: 27107 Segmentation fault      (core dumped) PERF_TEST_ATTR=/tmp/tmpmCOyBe /home/acme/bin/perf stat -o /tmp/tmpmCOyBe/perf.data -dd kill > /dev/null 2>&1
sh: line 1: 27110 Segmentation fault      (core dumped) PERF_TEST_ATTR=/tmp/tmpJP9x2e /home/acme/bin/perf stat -o /tmp/tmpJP9x2e/perf.data -ddd kill > /dev/null 2>&1
 Ok

Can you please check?

- Arnaldo
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#1158105

FromJiri Olsa <jolsa@redhat.com>
Date2015-06-04 00:40 +0200
Message-ID<pxpuh-6vh-9@gated-at.bofh.it>
In reply to#1158102
On Wed, Jun 03, 2015 at 07:24:53PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Wed, Jun 03, 2015 at 07:07:05PM -0300, Arnaldo Carvalho de Melo escreveu:
> > Em Wed, Jun 03, 2015 at 04:25:50PM +0200, Jiri Olsa escreveu:
> > > hi,
> > > sending cleanup/move of shadow counters. I need it
> > > for my other changes of stat scripting, but I think
> > > it can stand alone as a cleanup.
> > > 
> > > v2 changes:
> > >   - move evsel id into 'struct perf_stat'
> > >     and change the id functions namespace
> > 
> > Thanks, applied.
> 
> 15: struct perf_event_attr setup                             :sh: line 1: 27101 Segmentation fault      (core dumped) PERF_TEST_ATTR=/tmp/tmptb9pWi /home/acme/bin/perf stat -o /tmp/tmptb9pWi/perf.data kill > /dev/null 2>&1
> sh: line 1: 27104 Segmentation fault      (core dumped) PERF_TEST_ATTR=/tmp/tmpWgRK9D /home/acme/bin/perf stat -o /tmp/tmpWgRK9D/perf.data -d kill > /dev/null 2>&1
> sh: line 1: 27107 Segmentation fault      (core dumped) PERF_TEST_ATTR=/tmp/tmpmCOyBe /home/acme/bin/perf stat -o /tmp/tmpmCOyBe/perf.data -dd kill > /dev/null 2>&1
> sh: line 1: 27110 Segmentation fault      (core dumped) PERF_TEST_ATTR=/tmp/tmpJP9x2e /home/acme/bin/perf stat -o /tmp/tmpJP9x2e/perf.data -ddd kill > /dev/null 2>&1
>  Ok
> 
> Can you please check?

arghh.. sry, I remember running tests :-\ really ;-)
it's the -d default events that do not set evsel->name

attached patch fixes it, but I'll send v3 for the first patch

thanks,
jirka


---
diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
index d22791d02db0..dba762da5679 100644
--- a/tools/perf/util/stat.c
+++ b/tools/perf/util/stat.c
@@ -88,7 +88,7 @@ void perf_stat_evsel_id_init(struct perf_evsel *evsel)
 	/* ps->id is 0 hence PERF_STAT_EVSEL_ID__NONE by default */
 
 	for (i = 0; i < PERF_STAT_EVSEL_ID__MAX; i++) {
-		if (!strcmp(evsel->name, id_str[i])) {
+		if (evsel->name && !strcmp(evsel->name, id_str[i])) {
 			ps->id = i;
 			break;
 		}
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#1158115

FromArnaldo Carvalho de Melo <acme@kernel.org>
Date2015-06-04 00:50 +0200
Message-ID<pxpDY-6H6-19@gated-at.bofh.it>
In reply to#1158105
Em Thu, Jun 04, 2015 at 12:38:24AM +0200, Jiri Olsa escreveu:
> On Wed, Jun 03, 2015 at 07:24:53PM -0300, Arnaldo Carvalho de Melo wrote:
> > Em Wed, Jun 03, 2015 at 07:07:05PM -0300, Arnaldo Carvalho de Melo escreveu:
> > > Em Wed, Jun 03, 2015 at 04:25:50PM +0200, Jiri Olsa escreveu:
> > > > hi,
> > > > sending cleanup/move of shadow counters. I need it
> > > > for my other changes of stat scripting, but I think
> > > > it can stand alone as a cleanup.
> > > > 
> > > > v2 changes:
> > > >   - move evsel id into 'struct perf_stat'
> > > >     and change the id functions namespace
> > > 
> > > Thanks, applied.
> > 
> > 15: struct perf_event_attr setup                             :sh: line 1: 27101 Segmentation fault      (core dumped) PERF_TEST_ATTR=/tmp/tmptb9pWi /home/acme/bin/perf stat -o /tmp/tmptb9pWi/perf.data kill > /dev/null 2>&1
> > sh: line 1: 27104 Segmentation fault      (core dumped) PERF_TEST_ATTR=/tmp/tmpWgRK9D /home/acme/bin/perf stat -o /tmp/tmpWgRK9D/perf.data -d kill > /dev/null 2>&1
> > sh: line 1: 27107 Segmentation fault      (core dumped) PERF_TEST_ATTR=/tmp/tmpmCOyBe /home/acme/bin/perf stat -o /tmp/tmpmCOyBe/perf.data -dd kill > /dev/null 2>&1
> > sh: line 1: 27110 Segmentation fault      (core dumped) PERF_TEST_ATTR=/tmp/tmpJP9x2e /home/acme/bin/perf stat -o /tmp/tmpJP9x2e/perf.data -ddd kill > /dev/null 2>&1
> >  Ok
> > 
> > Can you please check?
> 
> arghh.. sry, I remember running tests :-\ really ;-)
> it's the -d default events that do not set evsel->name

> attached patch fixes it, but I'll send v3 for the first patch
> 
> thanks,
> jirka
> 
> 
> ---
> diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
> index d22791d02db0..dba762da5679 100644
> --- a/tools/perf/util/stat.c
> +++ b/tools/perf/util/stat.c
> @@ -88,7 +88,7 @@ void perf_stat_evsel_id_init(struct perf_evsel *evsel)
>  	/* ps->id is 0 hence PERF_STAT_EVSEL_ID__NONE by default */
>  
>  	for (i = 0; i < PERF_STAT_EVSEL_ID__MAX; i++) {
> -		if (!strcmp(evsel->name, id_str[i])) {
> +		if (evsel->name && !strcmp(evsel->name, id_str[i])) {

Why not use perf_evsel__name() then?

>  			ps->id = i;
>  			break;
>  		}
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