From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Alex Newman <posix4e@gmail.com>
Cc: David Ahern <dsahern@gmail.com>, linux-perf-users@vger.kernel.org
Subject: Re: Bug Report
Date: Mon, 11 May 2015 18:42:46 -0300 [thread overview]
Message-ID: <20150511214246.GA29215@kernel.org> (raw)
In-Reply-To: <CAPMERtji+=bZffRL-kFpvkte-P_U3DR3fs+FXe=zS9L91JphhQ@mail.gmail.com>
Em Mon, May 11, 2015 at 10:56:39AM -0700, Alex Newman escreveu:
> Ah sorry for the typo. David, that's correct. But you should be able
> to replicate that the error message is not revealing.
It should be changed to emit better messages like was done for 'perf
trace':
[acme@zoo linux]$ trace usleep 1
Error: No permissions to read /sys/kernel/debug/tracing/events/raw_syscalls/sys_(enter|exit)
Hint: Try 'sudo mount -o remount,mode=755 /sys/kernel/debug'
[acme@zoo linux]$ sudo mount -o remount,mode=755 /sys/kernel/debug
[sudo] password for acme:
[acme@zoo linux]$ trace usleep 1
0.095 ( 0.002 ms): usleep/974 brk( ) = 0x7f2dc04fd000
0.112 ( 0.003 ms): usleep/974 mmap(len: 4096, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS, fd: -1 ) = 0x7f2dbf39e000
0.123 ( 0.006 ms): usleep/974 access(filename: 0x7f2dbf19c270, mode: R ) = -1 ENOENT No such file or directory
0.137 ( 0.006 ms): usleep/974 open(filename: 0x7f2dbf19ab92, flags: CLOEXEC ) = 3
0.141 ( 0.002 ms): usleep/974 fstat(fd: 3, statbuf: 0x7ffffabf0d60 ) = 0
0.146 ( 0.004 ms): usleep/974 mmap(len: 98505, prot: READ, flags: PRIVATE, fd: 3 ) = 0x7f2dbf385000
0.148 ( 0.001 ms): usleep/974 close(fd: 3 ) = 0
0.164 ( 0.007 ms): usleep/974 open(filename: 0x7f2dbf39427a, flags: CLOEXEC ) = 3
0.168 ( 0.002 ms): usleep/974 read(fd: 3, buf: 0x7ffffabf0ef0, count: 832 ) = 832
0.171 ( 0.001 ms): usleep/974 fstat(fd: 3, statbuf: 0x7ffffabf0d90 ) = 0
0.179 ( 0.005 ms): usleep/974 mmap(len: 2147728, prot: EXEC|READ, flags: PRIVATE|DENYWRITE, fd: 3 ) = 0x7f2dbef71000
0.188 ( 0.007 ms): usleep/974 mprotect(start: 0x7f2dbef7c000, len: 2097152 ) = 0
0.194 ( 0.005 ms): usleep/974 mmap(addr: 0x7f2dbf17c000, len: 8192, prot: READ|WRITE, flags: PRIVATE|DENYWRITE|FIXED, fd: 3, off: 45056) = 0x7f2dbf17c000
0.205 ( 0.001 ms): usleep/974 close(fd: 3 ) = 0
0.220 ( 0.007 ms): usleep/974 open(filename: 0x7f2dbf39b33b, flags: CLOEXEC ) = 3
0.223 ( 0.002 ms): usleep/974 read(fd: 3, buf: 0x7ffffabf0ec0, count: 832 ) = 832
0.230 ( 0.002 ms): usleep/974 fstat(fd: 3, statbuf: 0x7ffffabf0d60 ) = 0
0.237 ( 0.006 ms): usleep/974 mmap(len: 3919744, prot: EXEC|READ, flags: PRIVATE|DENYWRITE, fd: 3 ) = 0x7f2dbebb4000
0.247 ( 0.009 ms): usleep/974 mprotect(start: 0x7f2dbed67000, len: 2097152 ) = 0
0.255 ( 0.006 ms): usleep/974 mmap(addr: 0x7f2dbef67000, len: 24576, prot: READ|WRITE, flags: PRIVATE|DENYWRITE|FIXED, fd: 3, off: 1781760) = 0x7f2dbef67000
0.273 ( 0.011 ms): usleep/974 mmap(addr: 0x7f2dbef6d000, len: 16256, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS|FIXED, fd: -1) = 0x7f2dbef6d000
0.281 ( 0.001 ms): usleep/974 close(fd: 3 ) = 0
0.291 ( 0.003 ms): usleep/974 mmap(len: 4096, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS, fd: -1 ) = 0x7f2dbf384000
0.306 ( 0.003 ms): usleep/974 mmap(len: 4096, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS, fd: -1 ) = 0x7f2dbf383000
0.311 ( 0.002 ms): usleep/974 mmap(len: 4096, prot: READ|WRITE, flags: PRIVATE|ANONYMOUS, fd: -1 ) = 0x7f2dbf382000
0.316 ( 0.001 ms): usleep/974 arch_prctl(option: 4098, arg2: 139834458388224, arg3: 139834458382352, arg4: 34, arg5: 4294967295) = 0
0.386 ( 0.006 ms): usleep/974 mprotect(start: 0x7f2dbef67000, len: 16384, prot: READ ) = 0
0.396 ( 0.003 ms): usleep/974 mprotect(start: 0x7f2dbf17c000, len: 4096, prot: READ ) = 0
0.407 ( 0.004 ms): usleep/974 mprotect(start: 0x7f2dbf5a3000, len: 4096, prot: READ ) = 0
0.416 ( 0.005 ms): usleep/974 mprotect(start: 0x7f2dbf39f000, len: 4096, prot: READ ) = 0
0.429 ( 0.012 ms): usleep/974 munmap(addr: 0x7f2dbf385000, len: 98505 ) = 0
0.487 ( 0.002 ms): usleep/974 brk( ) = 0x7f2dc04fd000
0.492 ( 0.004 ms): usleep/974 brk(brk: 0x7f2dc051e000 ) = 0x7f2dc051e000
0.495 ( 0.001 ms): usleep/974 brk( ) = 0x7f2dc051e000
0.573 ( 0.059 ms): usleep/974 nanosleep(rqtp: 0x7ffffabf14e0 ) = 0
0.581 ( 0.000 ms): usleep/974 exit_group(
[acme@zoo linux]$
[acme@zoo linux]$ trace --all-cpus
Error: Operation not permitted.
Hint: Check /proc/sys/kernel/perf_event_paranoid setting.
Hint: For system wide tracing it needs to be set to -1.
Hint: Try: 'sudo sh -c "echo -1 > /proc/sys/kernel/perf_event_paranoid"'
Hint: The current value is 1.
[acme@zoo linux]$
Will try to do it soon,
- Arnaldo
> On Mon, May 11, 2015 at 10:14 AM, David Ahern <dsahern@gmail.com> wrote:
> > On 5/11/15 10:57 AM, Alex Newman wrote:
> >>
> >> Hello mailing list friends,
> >>
> >> I am sorry if this is not the best place for this (where should I
> >> report improvements for perf).
> >>
> >> This command works when I have the correct permissions but if I don't
> >> rather than getting "bad permissions" I get
> >>
> >> posix4e@posix4e-P27GV2:~$ perf stat -e 'ext4:' -a
> >
> >
> > that's an invalid event list; it should never work. Did you mean -e
> > 'ext4:*'?
> >
> > David
> --
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next prev parent reply other threads:[~2015-05-11 21:42 UTC|newest]
Thread overview: 184+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-11 16:57 Bug Report Alex Newman
2015-05-11 17:14 ` David Ahern
2015-05-11 17:56 ` Alex Newman
2015-05-11 21:42 ` Arnaldo Carvalho de Melo [this message]
-- strict thread matches above, loose matches on Subject: below --
2023-08-28 12:51 Bug report Dexter Pontañeles
2023-06-27 16:02 Bug Report Tiago d'Almeida
2022-12-28 2:43 Bug report Jensen Bean
2022-12-28 5:02 ` Eric Sunshine
2022-12-25 17:26 bug report Eyal Post
2022-12-25 18:12 ` Eric Sunshine
2022-12-08 5:29 Bug Report Jensen Bean
2022-12-08 8:31 ` Bagas Sanjaya
[not found] ` <CANqKdC-gHgQHn5DMoOREY52y7PpRLMpNAjX3qeA5iy9z_GXdzw@mail.gmail.com>
2022-12-26 2:15 ` Bagas Sanjaya
2022-11-19 20:20 Jensen Bean
2022-10-03 15:28 Bug report Alastair Douglas
2022-10-03 16:53 ` Junio C Hamano
2022-10-04 10:15 ` Alastair Douglas
2022-10-05 5:46 ` Junio C Hamano
2022-04-20 19:45 Bug Report Daniel Habenicht
2022-04-20 21:30 ` brian m. carlson
2022-04-20 22:34 ` rsbecker
2022-04-21 13:20 ` Daniel Habenicht
2022-04-21 14:39 ` Torsten Bögershausen
[not found] ` <AS1P190MB175022A7F1264807ECA464A8ECF49@AS1P190MB1750.EURP190.PROD.OUTLOOK.COM>
2022-04-21 17:52 ` Torsten Bögershausen
2021-12-01 22:31 Josh Rampersad
2021-11-12 4:22 bug report Theodore Li
2021-11-12 4:29 ` Junio C Hamano
2021-11-12 6:59 ` Theodore Li
2021-11-12 14:05 ` Paul Smith
2020-03-27 11:53 Bug Report James Yeoman
2020-03-27 12:59 ` Pratyush Yadav
2020-03-21 9:38 bug report aaa
2020-03-22 8:13 ` Leon Romanovsky
[not found] <CA+2sEepTyrK-iH+VBHVF1i9DuYVzDkTNxuM0-yoWbkC9N4f8HA@mail.gmail.com>
2019-04-15 15:18 ` Nick Steinhauser
2018-09-08 9:50 Bug report 李 武刚
2018-09-19 20:46 ` Nicolas Iooss
2018-09-06 20:23 Jianliang Wu
2018-09-07 9:43 ` Luiz Augusto von Dentz
2017-08-30 21:25 Aleksandar Pavic
2017-08-31 6:36 ` Kevin Daudt
2017-08-31 14:19 ` Dov Grobgeld
2017-08-31 14:55 ` Aleksandar Pavic
2017-08-31 16:23 ` Stephan Beyer
2017-09-02 8:49 ` Jeff King
2016-12-22 20:07 Ing. Ricardo Brisighelli
2016-12-23 13:15 ` Wei Liu
2016-05-13 5:04 bug report 李本超
2016-05-13 5:23 ` Pranit Bauva
2016-05-13 5:58 ` 李本超
2016-05-13 6:37 ` Pranit Bauva
2016-05-13 6:57 ` 李本超
2016-05-13 7:10 ` Pranit Bauva
2016-05-13 7:41 ` 李本超
2016-05-13 8:10 ` Jeff King
2016-05-13 12:05 ` 李本超
2016-04-03 0:25 Bug Report Benjamin Sandeen
2016-04-03 2:20 ` Eric N. Vander Weele
2016-04-03 2:22 ` Jacob Keller
2015-01-27 14:43 bug report Albert Akhriev
2015-01-27 14:50 ` Jeff King
2014-08-05 5:08 Zhu, Zhengyun
2014-08-05 16:05 ` Vasily Tarasov
2013-05-24 22:32 Bug Report Rajiv Shah
2013-05-28 11:07 ` Bryn M. Reeves
[not found] <CAC34_pT9zwZDnUjo1bTUZabD02M48=_+77-mNCA5adWTgxuYgg@mail.gmail.com>
2013-04-08 5:20 ` Kirk Fraser
2013-03-04 5:44 Roberto CORRADO
2012-10-05 10:13 Bug report Муковников Михаил
2012-10-05 10:32 ` Konstantin Khomoutov
2012-10-05 10:47 ` Carlos Martín Nieto
2012-10-05 11:03 ` Муковников Михаил
2012-10-05 10:52 ` Муковников Михаил
2012-10-04 4:35 John Whitney
2012-10-04 14:19 ` Phil Hord
2012-10-04 16:10 ` John Whitney
2012-10-06 13:31 ` Jeff King
2012-10-07 2:23 ` John Whitney
2012-10-07 23:52 ` Jeff King
2012-10-09 17:17 ` John Whitney
2012-10-09 19:00 ` John Whitney
2012-10-04 15:21 ` Andrew Wong
2012-10-04 16:16 ` John Whitney
2012-10-04 16:28 ` John Whitney
2012-10-04 17:01 ` Andrew Wong
2012-09-01 23:24 bug report Manoel Pedro
2012-08-20 22:31 Bug report mr.shroom
2012-08-20 22:43 ` Randy Dunlap
2012-08-20 23:16 ` Alan Cox
2012-08-21 9:37 ` Borislav Petkov
2012-08-01 10:46 artem rus
2011-10-28 15:55 Hendrik Knackstedt
2011-07-19 17:34 Bug Report Charles Opondo
2011-07-20 15:38 ` Bjorn Helgaas
2011-04-05 4:48 bug report Larry D'Anna
2011-04-05 6:17 ` Helmut Hullen
[not found] <mailman.1.1244602801.14549.users@nilfs.org>
[not found] ` <mailman.1.1244602801.14549.users-JrjvKiOkagjYtjvyW6yDsg@public.gmane.org>
2009-06-11 17:51 ` Bug Report Dipl.-Ing. Michael Niederle
2009-06-12 6:44 ` Ryusuke Konishi
2009-04-03 23:44 bug report Jeremy
2008-11-03 18:30 Todor Gyumyushev
2008-09-25 14:08 Todor Gyumyushev
2008-09-24 9:41 Todor Gyumyushev
2008-09-24 16:38 ` Simon Holm Thøgersen
2008-09-24 17:55 ` Todor Gyumyushev
2008-09-24 18:25 ` Simon Holm Thøgersen
2008-09-29 1:36 ` Tejun Heo
2008-09-29 8:30 ` Todor Gyumyushev
2008-09-30 11:47 ` Tejun Heo
2008-07-26 15:17 Bug report Jachin Spencer
2008-07-27 1:11 ` Pavel Roskin
2008-06-06 19:59 bug report Zsiros Attila
2008-06-07 1:44 ` Oliver Pinter
2008-06-07 1:45 ` Oliver Pinter
2008-06-07 5:56 ` Andrew Morton
2008-06-07 8:47 ` Ilpo Järvinen
2008-06-07 12:50 ` Oliver Pinter
2008-06-07 15:09 ` Phil Oester
2008-06-07 18:53 ` Oliver Pinter
2008-06-08 11:56 ` Zsiros Attila
2008-06-09 17:04 ` Oliver Pinter
2007-09-06 17:05 Bug Report Mark Goodall
2007-09-07 0:23 ` Barry Naujok
2007-09-18 2:27 ` Barry Naujok
2006-07-09 2:04 BUG report Antonio Mignolli
2006-07-12 10:56 ` Markus Rechberger
2005-10-21 8:42 bug report Ian Pratt
2005-10-21 11:28 ` David F Barrera
2005-10-20 16:47 Stephan Böni
2005-10-20 12:47 Stephan Böni
2005-10-20 15:28 ` David F Barrera
2005-05-26 1:09 Jerry DeLisle
2005-05-26 2:12 ` Jerry DeLisle
2005-04-11 14:07 Bug report studdugie
2005-04-11 15:30 ` Vladimir Saveliev
2005-04-12 13:57 ` studdugie
2005-04-13 12:49 ` Vladimir Saveliev
2005-04-14 4:45 ` David Masover
2005-04-14 9:15 ` Vladimir Saveliev
2004-12-25 13:00 Ioannis Fikouras
2004-11-14 12:38 Bug Report Alan Erola
2004-11-29 18:31 ` bug report Muhtar Mahsut
2004-11-30 0:39 ` Greg KH
2004-12-18 11:11 ` Brian Kreulen
2004-12-18 12:06 ` Brian Kreulen
2005-08-21 20:06 ` John Saylor
2005-08-21 20:45 ` Kay Sievers
2006-01-11 11:08 ` Michael Mey
2006-01-11 11:17 ` Kay Sievers
2004-03-03 10:47 Bug report Manivannan Shanmugam
2004-02-21 2:48 Grahame M. Kelly
2004-02-24 9:22 ` Vitaly Fertman
2004-01-13 19:09 BUG REPORT Luca T.
2004-01-13 21:18 ` David D. Huff Jr.
2004-01-14 10:17 ` Vitaly Fertman
2003-11-23 2:09 bug report Stephan Reichel
2003-11-23 12:19 ` Vitaly Fertman
2003-11-25 0:44 ` Stephan Reichel
2003-11-25 0:54 ` Carl-Daniel Hailfinger
2003-11-25 10:54 ` Vitaly Fertman
2003-11-23 12:20 ` Redeeman
2003-08-02 18:10 Russell Whitaker
[not found] ` <3F424BB1.8050400@metavize.com>
2003-08-19 23:44 ` Russell Whitaker
2003-04-28 20:40 robs
2003-04-29 5:49 ` Oleg Drokin
2003-04-29 8:20 ` robs
2003-04-29 8:43 ` Oleg Drokin
2003-04-29 8:41 ` robs
2003-04-29 8:45 ` Oleg Drokin
2002-12-02 19:40 Howard Shane
2002-10-04 15:01 Sander Kamphuis
2002-10-04 15:32 ` Paulo Andre'
2002-10-04 15:35 ` Adrian Bunk
2002-07-12 5:12 Bug Report service
2002-04-24 9:15 bug report Pan,Gaoyong
2002-03-04 16:04 Vitaly Fertman
2001-11-27 15:04 Bug (?) report Matteo Sasso
2001-11-27 15:51 ` Tommy Reynolds
2001-11-10 19:01 Bug Report Logoth Dragon
2001-11-10 19:08 ` Alan Cox
2001-08-02 9:38 Bug report Daniel Glozman
2001-03-22 20:58 Craig Cummings
2001-03-22 21:43 ` Tim Walberg
2001-02-01 22:09 Anders S. Buch
2001-02-03 1:44 ` Jens Axboe
1999-06-07 8:54 Alexander Larsson
1999-06-07 13:53 ` Dan Malek
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