From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>, Wang Nan <wangnan0@huawei.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Ingo Molnar <mingo@kernel.org>, David Ahern <dsahern@gmail.com>,
Namhyung Kim <namhyung@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Intel PT not work on 4.5.0-rc
Date: Tue, 1 Mar 2016 15:24:55 -0300 [thread overview]
Message-ID: <20160301182455.GB3604@kernel.org> (raw)
In-Reply-To: <20160301182035.GA3604@kernel.org>
Em Tue, Mar 01, 2016 at 03:20:35PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Tue, Mar 01, 2016 at 12:59:21PM -0300, Arnaldo Carvalho de Melo escreveu:
> > Anyway, 'strace' shows the 4 pairs of mmaps, but it still doesn't work, rebooting:
>
> After I reboot, all works:
>
> [root@jouet ~]# perf record -e intel_pt//u -a sleep 0.001
> [ perf record: Woken up 1 times to write data ]
> [ perf record: Captured and wrote 1.119 MB perf.data ]
> [root@jouet ~]# perf script | head -10
> perf 3797 [002] 8136.590828: 1 branches:u: 0 [unknown] ([unknown]) => 7fcb3f240707 __GI___ioctl (/usr/lib64/libc-2.22.so)
> perf 3797 [002] 8136.590828: 1 branches:u: 7fcb3f24070f __GI___ioctl (/usr/lib64/libc-2.22.so) => 497e56 perf_evsel__enable (/home/acme/bin/perf)
> perf 3797 [002] 8136.590828: 1 branches:u: 497e58 perf_evsel__enable (/home/acme/bin/perf) => 497e20 perf_evsel__enable (/home/acme/bin/perf)
> perf 3797 [002] 8136.590828: 1 branches:u: 497e27 perf_evsel__enable (/home/acme/bin/perf) => 497e80 perf_evsel__enable (/home/acme/bin/perf)
> perf 3797 [002] 8136.590828: 1 branches:u: 497e87 perf_evsel__enable (/home/acme/bin/perf) => 497e14 perf_evsel__enable (/home/acme/bin/perf)
> perf 3797 [002] 8136.590828: 1 branches:u: 497e1b perf_evsel__enable (/home/acme/bin/perf) => 497e29 perf_evsel__enable (/home/acme/bin/perf)
> perf 3797 [002] 8136.590828: 1 branches:u: 497e51 perf_evsel__enable (/home/acme/bin/perf) => 421d00 ioctl@plt (/home/acme/bin/perf)
> perf 3797 [002] 8136.590828: 1 branches:u: 421d00 ioctl@plt (/home/acme/bin/perf) => 7fcb3f240700 __GI___ioctl (/usr/lib64/libc-2.22.so)
> perf 3797 [002] 8136.590828: 1 branches:u: 7fcb3f240705 __GI___ioctl (/usr/lib64/libc-2.22.so) => 0 [unknown] ([unknown])
> perf 3797 [002] 8136.590834: 1 branches:u: 0 [unknown] ([unknown]) => 7fcb3f240707 __GI___ioctl (/usr/lib64/libc-2.22.so)
> [root@jouet ~]#
> [root@jouet ~]# perf report -D | tail -20
> . 0020: 00 00 00 00 00 00 00 00 07 14 b9 72 66 07 00 00 ...........rf...
> . 0030: 03 00 00 00 00 00 00 00 1e 00 00 00 00 00 00 00 ................
>
> 3 8136592790535 0x11e688 [0x40]: PERF_RECORD_AUX offset: 0x28 size: 0x28 flags: 0 []
>
> Aggregated stats: (excludes AUX area (e.g. instruction trace) decoded / synthesized events)
> TOTAL events: 8859
> MMAP events: 120
> COMM events: 509
> EXIT events: 1
> FORK events: 507
> MMAP2 events: 7673
> AUX events: 8
> ITRACE_START events: 4
> SWITCH_CPU_WIDE events: 26
> FINISHED_ROUND events: 2
> AUXTRACE_INFO events: 1
> AUXTRACE events: 8
> intel_pt//u stats:
> dummy:u stats:
> [root@jouet ~]#
>
> Trying a suspend/resume now...
Scrap that theory, it still works after two suspend/resume cycles :-\
- ARnaldo
next prev parent reply other threads:[~2016-03-01 18:25 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-25 14:21 Arnaldo Carvalho de Melo
2016-02-25 21:59 ` Adrian Hunter
2016-03-01 15:40 ` Adrian Hunter
2016-03-01 15:59 ` Arnaldo Carvalho de Melo
2016-03-01 18:20 ` Arnaldo Carvalho de Melo
2016-03-01 18:24 ` Arnaldo Carvalho de Melo [this message]
2016-03-01 19:12 ` Arnaldo Carvalho de Melo
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=20160301182455.GB3604@kernel.org \
--to=acme@kernel.org \
--cc=adrian.hunter@intel.com \
--cc=alexander.shishkin@linux.intel.com \
--cc=dsahern@gmail.com \
--cc=jolsa@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=namhyung@kernel.org \
--cc=wangnan0@huawei.com \
/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
Powered by JetHome