From: David Ahern <dsahern@gmail.com>
To: Namhyung Kim <namhyung.kim@lge.com>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Paul Mackerras <paulus@samba.org>, Ingo Molnar <mingo@redhat.com>,
Namhyung Kim <namhyung@gmail.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 07/13] perf evlist: Fix creation of cpu map
Date: Thu, 26 Apr 2012 09:05:23 -0600 [thread overview]
Message-ID: <4F996433.7040003@gmail.com> (raw)
In-Reply-To: <1335417327-11796-8-git-send-email-namhyung.kim@lge.com>
On 4/25/12 11:15 PM, Namhyung Kim wrote:
> Currently, 'perf record -- sleep 1' creates a cpu map for all online
> cpus since it turns out calling cpu_map__new(NULL). Fix it. Also it
> is guaranteed that cpu_list is NULL if PID/TID is given by calling
> perf_target__validate(), so we can make the conditional bit simpler.
>
> This also fixes perf test 7 (Validate) failure on my 6 core machine:
>
> $ cat /sys/devices/system/cpu/online
> 0-11
> $ ./perf test -v 7
> 7: Validate PERF_RECORD_* events& perf_sample fields:
> --- start ---
> perf_evlist__mmap: Operation not permitted
> ---- end ----
> Validate PERF_RECORD_* events& perf_sample fields: FAILED!
Works fine for me with latest tip:
$ cat /sys/devices/system/cpu/online
0-15
$ /tmp/perf/perf test -v 7
7: Validate PERF_RECORD_* events & perf_sample fields:
--- start ---
64740167922229 0 PERF_RECORD_SAMPLE
64740167926354 0 PERF_RECORD_SAMPLE
64740167928389 0 PERF_RECORD_SAMPLE
64740167930832 0 PERF_RECORD_SAMPLE
64740168404145 0 PERF_RECORD_COMM: sleep:16523
64740168424672 0 PERF_RECORD_MMAP 16523/16523: [0x400000(0x6000) @ 0]:
/bin/sleep
64740168441676 0 PERF_RECORD_MMAP 16523/16523: [0x7f83de5bb000(0x224000)
@ 0]: /lib64/ld-2.14.90.so
64740168458460 0 PERF_RECORD_MMAP 16523/16523: [0x7fff009ff000(0x1000) @
0x7fff009ff000]: [vdso]
64740168586358 0 PERF_RECORD_MMAP 16523/16523: [0x7f83de203000(0x3b8000)
@ 0]: /lib64/libc-2.14.90.so
64741168625653 0 PERF_RECORD_EXIT(16523:16523):(16523:16523)
---- end ----
Validate PERF_RECORD_* events & perf_sample fields: Ok
Is the failure a by-product of the other patches in this set?
David
>
> Signed-off-by: Namhyung Kim<namhyung.kim@lge.com>
> ---
> tools/perf/util/evlist.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
> index a43e2c56d1c6..556d98af1a0b 100644
> --- a/tools/perf/util/evlist.c
> +++ b/tools/perf/util/evlist.c
> @@ -608,8 +608,9 @@ int perf_evlist__create_maps(struct perf_evlist *evlist,
> if (evlist->threads == NULL)
> return -1;
>
> - if (target->uid != UINT_MAX ||
> - (target->cpu_list == NULL&& target->tid))
> + if (target->uid != UINT_MAX || target->tid)
> + evlist->cpus = cpu_map__dummy_new();
> + else if (!target->system_wide&& target->cpu_list == NULL)
> evlist->cpus = cpu_map__dummy_new();
> else
> evlist->cpus = cpu_map__new(target->cpu_list);
next prev parent reply other threads:[~2012-04-26 15:05 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-26 5:15 [RFC PATCHSET 00/13] perf tools: Fix cpu/thread map handling v2 Namhyung Kim
2012-04-26 5:15 ` [PATCH 01/13] perf tools: Introduce struct perf_target Namhyung Kim
2012-05-11 6:27 ` [tip:perf/core] " tip-bot for Namhyung Kim
2012-04-26 5:15 ` [PATCH 02/13] perf stat: Convert to " Namhyung Kim
2012-05-11 6:28 ` [tip:perf/core] " tip-bot for Namhyung Kim
2012-04-26 5:15 ` [PATCH 03/13] perf top: " Namhyung Kim
2012-05-11 6:29 ` [tip:perf/core] " tip-bot for Namhyung Kim
2012-04-26 5:15 ` [PATCH 04/13] perf tools: Introduce perf_target__validate() helper Namhyung Kim
2012-05-11 6:30 ` [tip:perf/core] " tip-bot for Namhyung Kim
2012-04-26 5:15 ` [PATCH 05/13] perf tools: Make perf_evlist__create_maps() take struct perf_target Namhyung Kim
2012-05-11 6:31 ` [tip:perf/core] perf evlist: Make create_maps() " tip-bot for Namhyung Kim
2012-04-26 5:15 ` [PATCH 06/13] perf tools: Check more combinations of PID/TID, UID and CPU switches Namhyung Kim
2012-05-11 6:32 ` [tip:perf/core] " tip-bot for Namhyung Kim
2012-04-26 5:15 ` [PATCH 07/13] perf evlist: Fix creation of cpu map Namhyung Kim
2012-04-26 15:05 ` David Ahern [this message]
2012-04-26 21:12 ` Namhyung Kim
2012-04-26 21:22 ` David Ahern
2012-04-27 0:16 ` Namhyung Kim
2012-04-27 15:08 ` Arnaldo Carvalho de Melo
2012-04-27 15:32 ` David Ahern
2012-04-27 16:00 ` Arnaldo Carvalho de Melo
2012-04-27 16:05 ` David Ahern
2012-04-27 16:09 ` Arnaldo Carvalho de Melo
2012-05-02 18:40 ` Arnaldo Carvalho de Melo
2012-05-04 4:05 ` Namhyung Kim
2012-05-04 13:37 ` Arnaldo Carvalho de Melo
2012-05-04 13:53 ` Namhyung Kim
2012-04-26 5:15 ` [PATCH 08/13] perf target: Split out perf_target handling code Namhyung Kim
2012-05-02 18:30 ` Arnaldo Carvalho de Melo
2012-05-03 14:39 ` Namhyung Kim
2012-05-03 15:27 ` Arnaldo Carvalho de Melo
2012-05-03 15:30 ` Namhyung Kim
2012-05-11 6:33 ` [tip:perf/core] " tip-bot for Namhyung Kim
2012-04-26 5:15 ` [PATCH 09/13] perf target: Introduce perf_target_errno Namhyung Kim
2012-05-02 18:59 ` Arnaldo Carvalho de Melo
2012-05-03 14:47 ` Namhyung Kim
2012-05-03 20:34 ` David Ahern
2012-05-03 20:42 ` Arnaldo Carvalho de Melo
2012-05-03 20:49 ` David Ahern
2012-04-26 5:15 ` [PATCH 10/13] perf target: Introduce perf_target__parse_uid() Namhyung Kim
2012-04-26 5:15 ` [PATCH 11/13] perf tools: Introduce perf_target__strerror() Namhyung Kim
2012-04-26 5:15 ` [PATCH 12/13] perf target: Consolidate target task/cpu checking Namhyung Kim
2012-04-26 5:15 ` [PATCH 13/13] perf stat: Use perf_evlist__create_maps Namhyung Kim
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4F996433.7040003@gmail.com \
--to=dsahern@gmail.com \
--cc=a.p.zijlstra@chello.nl \
--cc=acme@ghostprotocols.net \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=namhyung.kim@lge.com \
--cc=namhyung@gmail.com \
--cc=paulus@samba.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).