[GIT PULL 0/9] perf/core improvements and fixes

[GIT PULL 0/9] perf/core improvements and fixes

[Arnaldo Carvalho de Melo]

Hi Ingo,

	This is a signed tag, please lemme know if everything went well.

	The --uid feature works for root, we still need to sort out that
paranoia with some threads owned by a user that prevents 'perf --uid
non-root-user' to work for 'non-root-user'.

	http://git.kernel.org/?p=linux/kernel/git/acme/linux.git;a=tag;h=ce9600c4c664ce7f97e8aa5e756b0b4ea5b017c7
looks ok to me, need just to improve on the commit log message, I'll get
used to it :-)

- Arnaldo

The following changes since commit 172d1b0b73256551f100fc00c69e356d047103f5:

  perf tools: Fix compile error on x86_64 Ubuntu (2012-01-08 13:34:55 -0200)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux perf-core-for-mingo

for you to fetch changes up to f8f4b2872295dca88339ec0c403b2217b1197353:

  perf tools: Fix strlen() bug in perf_event__synthesize_event_type() (2012-01-24 20:31:34 -0200)

----------------------------------------------------------------
perf/core improvements and fixes

----------------------------------------------------------------
Arnaldo Carvalho de Melo (2):
      perf tools: Add fprintf methods for thread_map and cpu_map classes
      perf tools: Introduce per user view

David Daney (1):
      perf tools: Fix broken build by defining _GNU_SOURCE in Makefile

Jan Beulich (4):
      perf bench: Make "default" memcpy() selection actually use glibc's implementation
      perf bench: Also allow measuring alternative memcpy implementations
      perf bench: Also allow measuring memset()
      perf bench: Allow passing an iteration count to "bench mem mem{cpy,set}"

Srikar Dronamraju (1):
      perf probe: Usability fixes

Stephane Eranian (1):
      perf tools: Fix strlen() bug in perf_event__synthesize_event_type()

 tools/perf/Documentation/perf-record.txt     |    4 +
 tools/perf/Documentation/perf-top.txt        |    4 +
 tools/perf/Makefile                          |   11 +-
 tools/perf/bench/bench.h                     |    1 +
 tools/perf/bench/mem-memcpy-x86-64-asm-def.h |    8 +
 tools/perf/bench/mem-memcpy-x86-64-asm.S     |    6 +-
 tools/perf/bench/mem-memcpy.c                |   11 +-
 tools/perf/bench/mem-memset-arch.h           |   12 +
 tools/perf/bench/mem-memset-x86-64-asm-def.h |   12 +
 tools/perf/bench/mem-memset-x86-64-asm.S     |    6 +
 tools/perf/bench/mem-memset.c                |  298 ++++++++++++++++++++++++++
 tools/perf/builtin-bench.c                   |    3 +
 tools/perf/builtin-probe.c                   |    2 -
 tools/perf/builtin-record.c                  |   12 +-
 tools/perf/builtin-stat.c                    |    2 +-
 tools/perf/builtin-test.c                    |    8 +-
 tools/perf/builtin-top.c                     |   22 ++-
 tools/perf/perf.h                            |    1 +
 tools/perf/util/cpumap.c                     |   11 +
 tools/perf/util/cpumap.h                     |    4 +
 tools/perf/util/evlist.c                     |    6 +-
 tools/perf/util/evlist.h                     |    2 +-
 tools/perf/util/header.c                     |    2 +-
 tools/perf/util/hist.h                       |    1 +
 tools/perf/util/include/asm/dwarf2.h         |    4 +-
 tools/perf/util/probe-event.c                |    8 +-
 tools/perf/util/python.c                     |   10 +-
 tools/perf/util/symbol.c                     |    1 -
 tools/perf/util/thread_map.c                 |  109 +++++++++-
 tools/perf/util/thread_map.h                 |    7 +-
 tools/perf/util/top.c                        |    3 +
 tools/perf/util/top.h                        |    2 +
 tools/perf/util/trace-event-parse.c          |    3 +-
 tools/perf/util/ui/browsers/hists.c          |    5 +-
 tools/perf/util/ui/helpline.c                |    1 -
 tools/perf/util/usage.c                      |   39 ++++
 tools/perf/util/util.h                       |    3 +-
 37 files changed, 597 insertions(+), 47 deletions(-)
 create mode 100644 tools/perf/bench/mem-memset-arch.h
 create mode 100644 tools/perf/bench/mem-memset-x86-64-asm-def.h
 create mode 100644 tools/perf/bench/mem-memset-x86-64-asm.S
 create mode 100644 tools/perf/bench/mem-memset.c

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Ingo Molnar]

* Arnaldo Carvalho de Melo <acme@infradead.org> wrote:

> Hi Ingo,
> 
> 	This is a signed tag, please lemme know if everything went well.
> 
> 	The --uid feature works for root, we still need to 
> sort out that paranoia with some threads owned by a user that 
> prevents 'perf --uid non-root-user' to work for 
> 'non-root-user'.

Just wondering what detail causes that failure - the whole point 
of --uid mingo would be to enable nonprivileged users to do 
'session wide' profiling, *especially* if paranoia is high.

So what does --uid do which perf record --pid 1234 wouldnt 
already do? By all means --uid ought to be a fancy way of doing 
a whole bunch of perf record --pid 1234 profiling sessions, at 
once.

[ Btw, we should probably alias --user to --uid as well, as that 
  might be the intuitive thing people would typically use? ]

> 	http://git.kernel.org/?p=linux/kernel/git/acme/linux.git;a=tag;h=ce9600c4c664ce7f97e8aa5e756b0b4ea5b017c7
> looks ok to me, need just to improve on the commit log message, I'll get
> used to it :-)
> 
> - Arnaldo
> 
> The following changes since commit 172d1b0b73256551f100fc00c69e356d047103f5:
> 
>   perf tools: Fix compile error on x86_64 Ubuntu (2012-01-08 13:34:55 -0200)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux perf-core-for-mingo
> 
> for you to fetch changes up to f8f4b2872295dca88339ec0c403b2217b1197353:
> 
>   perf tools: Fix strlen() bug in perf_event__synthesize_event_type() (2012-01-24 20:31:34 -0200)
> 
> ----------------------------------------------------------------
> perf/core improvements and fixes
> 
> ----------------------------------------------------------------

Anyway, pulled, thanks a lot Arnaldo!

One detail: don't we want some of these fixes cherry-picked into 
perf/urgent as well?

Thanks,

	Ingo

[GIT PULL 0/9] perf/core improvements and fixes

[Arnaldo Carvalho de Melo]

From: Arnaldo Carvalho de Melo <acme@redhat.com>

Hi Ingo,

	Please consider pulling,

Thanks,

- Arnaldo

The following changes since commit ef34eb4da3eb62a1511592adf7c76d74faca0b14:

  Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2012-09-08 13:26:02 +0200)

are available in the git repository at:


  git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux tags/perf-core-for-mingo

for you to fetch changes up to 6c7f631261064762a8ba1ee34fc2b76d117ef3fa:

  perf symbols: Remove BIONIC wrapper around libgen.h (2012-09-08 17:15:16 -0300)

----------------------------------------------------------------
perf/core improvements and fixes

. Don't pass const char pointers to basename, so that we can unconditionally
  use libgen.h and thus avoid ifdef BIONIC lines, from David Ahern

. Fix assert/BUG_ON when NDEBUG is defined, from Irina Tirdea.

. Refactor hist formatting so that it can be reused with the GTK browser,
  From Namhyung Kim

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

----------------------------------------------------------------
David Ahern (3):
      perf annotate: Make a copy of filename for passing to basename
      perf probe: Make a copy of exec path for passing to basename
      perf symbols: Remove BIONIC wrapper around libgen.h

Irina Tirdea (1):
      perf bench: fix assert when NDEBUG is defined

Namhyung Kim (5):
      perf hists: Introduce perf_hpp for hist period printing
      perf hists: Handle field separator properly
      perf hists: Use perf_hpp__format->width to calculate the column widths
      perf hists browser: Use perf_hpp__format functions
      perf gtk/browser: Use perf_hpp__format functions

 tools/perf/Makefile                    |    2 +
 tools/perf/bench/sched-pipe.c          |    6 +-
 tools/perf/builtin-diff.c              |    1 +
 tools/perf/ui/browsers/hists.c         |   96 ++++++--
 tools/perf/ui/gtk/browser.c            |  101 +++++++--
 tools/perf/ui/gtk/gtk.h                |    1 +
 tools/perf/ui/gtk/setup.c              |    1 +
 tools/perf/ui/hist.c                   |  389 ++++++++++++++++++++++++++++++++
 tools/perf/ui/setup.c                  |    8 +-
 tools/perf/ui/stdio/hist.c             |  239 ++++----------------
 tools/perf/ui/tui/setup.c              |    4 +
 tools/perf/util/annotate.c             |    9 +-
 tools/perf/util/hist.c                 |   33 ---
 tools/perf/util/hist.h                 |   37 +++
 tools/perf/util/include/linux/kernel.h |    4 +
 tools/perf/util/probe-event.c          |   12 +-
 tools/perf/util/symbol.h               |    2 -
 17 files changed, 665 insertions(+), 280 deletions(-)
 create mode 100644 tools/perf/ui/hist.c

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Ingo Molnar]

* Arnaldo Carvalho de Melo <acme@infradead.org> wrote:

> From: Arnaldo Carvalho de Melo <acme@redhat.com>
> 
> Hi Ingo,
> 
> 	Please consider pulling,
> 
> Thanks,
> 
> - Arnaldo
> 
> The following changes since commit ef34eb4da3eb62a1511592adf7c76d74faca0b14:
> 
>   Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2012-09-08 13:26:02 +0200)
> 
> are available in the git repository at:
> 
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux tags/perf-core-for-mingo
> 
> for you to fetch changes up to 6c7f631261064762a8ba1ee34fc2b76d117ef3fa:
> 
>   perf symbols: Remove BIONIC wrapper around libgen.h (2012-09-08 17:15:16 -0300)
> 
> ----------------------------------------------------------------
> perf/core improvements and fixes
> 
> . Don't pass const char pointers to basename, so that we can unconditionally
>   use libgen.h and thus avoid ifdef BIONIC lines, from David Ahern
> 
> . Fix assert/BUG_ON when NDEBUG is defined, from Irina Tirdea.
> 
> . Refactor hist formatting so that it can be reused with the GTK browser,
>   From Namhyung Kim
> 
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
> 
> ----------------------------------------------------------------
> David Ahern (3):
>       perf annotate: Make a copy of filename for passing to basename
>       perf probe: Make a copy of exec path for passing to basename
>       perf symbols: Remove BIONIC wrapper around libgen.h
> 
> Irina Tirdea (1):
>       perf bench: fix assert when NDEBUG is defined
> 
> Namhyung Kim (5):
>       perf hists: Introduce perf_hpp for hist period printing
>       perf hists: Handle field separator properly
>       perf hists: Use perf_hpp__format->width to calculate the column widths
>       perf hists browser: Use perf_hpp__format functions
>       perf gtk/browser: Use perf_hpp__format functions
> 
>  tools/perf/Makefile                    |    2 +
>  tools/perf/bench/sched-pipe.c          |    6 +-
>  tools/perf/builtin-diff.c              |    1 +
>  tools/perf/ui/browsers/hists.c         |   96 ++++++--
>  tools/perf/ui/gtk/browser.c            |  101 +++++++--
>  tools/perf/ui/gtk/gtk.h                |    1 +
>  tools/perf/ui/gtk/setup.c              |    1 +
>  tools/perf/ui/hist.c                   |  389 ++++++++++++++++++++++++++++++++
>  tools/perf/ui/setup.c                  |    8 +-
>  tools/perf/ui/stdio/hist.c             |  239 ++++----------------
>  tools/perf/ui/tui/setup.c              |    4 +
>  tools/perf/util/annotate.c             |    9 +-
>  tools/perf/util/hist.c                 |   33 ---
>  tools/perf/util/hist.h                 |   37 +++
>  tools/perf/util/include/linux/kernel.h |    4 +
>  tools/perf/util/probe-event.c          |   12 +-
>  tools/perf/util/symbol.h               |    2 -
>  17 files changed, 665 insertions(+), 280 deletions(-)
>  create mode 100644 tools/perf/ui/hist.c

Pulled, thanks Arnaldo!

	Ingo

[GIT PULL 0/9] perf/core improvements and fixes

[Arnaldo Carvalho de Melo]

Hi Ingo,

	Please consider pulling,

- Arnaldo

The following changes since commit 8f7c1d07ade50dcdea7ec779b277e891f5c8292a:

  Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2012-10-26 10:30:49 +0200)

are available in the git repository at:


  git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux tags/perf-core-for-mingo

for you to fetch changes up to 1f16c5754d3a4008c29f3bf67b4f1271313ba385:

  perf stat: Add --pre and --post command (2012-10-26 11:22:25 -0200)

----------------------------------------------------------------
perf/core improvements:

. perf inject changes to allow showing where a task sleeps, from Andrew Vagin.

. Makefile improvements from Namhyung Kim.

. Add --pre and --post command hooks in 'stat', from Peter Zijlstra.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

----------------------------------------------------------------
Andrew Vagin (3):
      perf inject: Work with files
      perf inject: Merge sched_stat_* and sched_switch events
      perf inject: Mark a dso if it's used

Namhyung Kim (5):
      tools lib traceevent: Do not generate dependency for system header files
      perf tools: Cleanup doc related targets
      perf tools: Convert invocation of MAKE into SUBDIR
      perf tools: Always show CHK message when doing try-cc
      perf tools: Fix LIBELF_MMAP checking

Peter Zijlstra (1):
      perf stat: Add --pre and --post command

 tools/lib/traceevent/Makefile            |    2 +-
 tools/perf/Documentation/perf-inject.txt |   11 ++
 tools/perf/Documentation/perf-stat.txt   |    5 +
 tools/perf/Makefile                      |   51 ++------
 tools/perf/builtin-inject.c              |  189 ++++++++++++++++++++++++++++--
 tools/perf/builtin-stat.c                |   42 ++++++-
 tools/perf/config/utilities.mak          |    3 +-
 tools/perf/util/build-id.c               |   10 +-
 tools/perf/util/build-id.h               |    4 +
 9 files changed, 256 insertions(+), 61 deletions(-)

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Ingo Molnar]

* Arnaldo Carvalho de Melo <acme@infradead.org> wrote:

> Hi Ingo,
> 
> 	Please consider pulling,
> 
> - Arnaldo
> 
> The following changes since commit 8f7c1d07ade50dcdea7ec779b277e891f5c8292a:
> 
>   Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2012-10-26 10:30:49 +0200)
> 
> are available in the git repository at:
> 
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux tags/perf-core-for-mingo
> 
> for you to fetch changes up to 1f16c5754d3a4008c29f3bf67b4f1271313ba385:
> 
>   perf stat: Add --pre and --post command (2012-10-26 11:22:25 -0200)
> 
> ----------------------------------------------------------------
> perf/core improvements:
> 
> . perf inject changes to allow showing where a task sleeps, from Andrew Vagin.
> 
> . Makefile improvements from Namhyung Kim.

These are really useful: there used to be a couple of seconds of 
wait time at the beginning of every perf build - these are now 
nicely explained with the various CHK entries.

> 
> . Add --pre and --post command hooks in 'stat', from Peter Zijlstra.
> 
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
> 
> ----------------------------------------------------------------
> Andrew Vagin (3):
>       perf inject: Work with files
>       perf inject: Merge sched_stat_* and sched_switch events
>       perf inject: Mark a dso if it's used
> 
> Namhyung Kim (5):
>       tools lib traceevent: Do not generate dependency for system header files
>       perf tools: Cleanup doc related targets
>       perf tools: Convert invocation of MAKE into SUBDIR
>       perf tools: Always show CHK message when doing try-cc
>       perf tools: Fix LIBELF_MMAP checking
> 
> Peter Zijlstra (1):
>       perf stat: Add --pre and --post command
> 
>  tools/lib/traceevent/Makefile            |    2 +-
>  tools/perf/Documentation/perf-inject.txt |   11 ++
>  tools/perf/Documentation/perf-stat.txt   |    5 +
>  tools/perf/Makefile                      |   51 ++------
>  tools/perf/builtin-inject.c              |  189 ++++++++++++++++++++++++++++--
>  tools/perf/builtin-stat.c                |   42 ++++++-
>  tools/perf/config/utilities.mak          |    3 +-
>  tools/perf/util/build-id.c               |   10 +-
>  tools/perf/util/build-id.h               |    4 +
>  9 files changed, 256 insertions(+), 61 deletions(-)

Pulled, thanks Arnaldo!

	Ingo

Re: [GIT PULL 0/9] perf/core improvements and fixes

[David Ahern]

On 10/26/12 8:54 AM, Ingo Molnar wrote:
>> perf/core improvements:
>>
>> . perf inject changes to allow showing where a task sleeps, from Andrew Vagin.
>>
>> . Makefile improvements from Namhyung Kim.
>
> These are really useful: there used to be a couple of seconds of
> wait time at the beginning of every perf build - these are now
> nicely explained with the various CHK entries.

PERF-VERSION-GEN and specifically the git commands are the cause of more 
delay than the config checks, especially when doing the build in a VM 
with the kernel source on an NFS mount.

David

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Namhyung Kim]

2012-10-26 (금), 09:06 -0600, David Ahern:
> On 10/26/12 8:54 AM, Ingo Molnar wrote:
> >> perf/core improvements:
> >>
> >> . perf inject changes to allow showing where a task sleeps, from Andrew Vagin.
> >>
> >> . Makefile improvements from Namhyung Kim.
> >
> > These are really useful: there used to be a couple of seconds of
> > wait time at the beginning of every perf build - these are now
> > nicely explained with the various CHK entries.

Kudos to Jiri who did the real work!

> 
> PERF-VERSION-GEN and specifically the git commands are the cause of more 
> delay than the config checks, especially when doing the build in a VM 
> with the kernel source on an NFS mount.

And I see a strange delay when compiling builtin-sched.o.  After
building perf tools, I deleted builtin-{sched,test,script}.o to rebuild
the only since they are largest ones.

  namhyung@leonhard:perf$ ls -lS *.c | head -3
  -rw-r--r-- 1 namhyung namhyung 45522 2012-10-27 00:20 builtin-sched.c
  -rw-r--r-- 1 namhyung namhyung 36372 2012-10-27 00:20 builtin-test.c
  -rw-r--r-- 1 namhyung namhyung 35555 2012-10-27 00:20 builtin-script.c

  namhyung@leonhard:perf$ rm builtin-{sched,test,script}.o


And then building each file with time command shows this:

  namhyung@leonhard:perf$ time make builtin-script.o &> /dev/null

  real	0m4.577s
  user	0m2.755s
  sys	0m1.655s

  namhyung@leonhard:perf$ time make builtin-test.o &> /dev/null

  real	0m4.486s
  user	0m2.707s
  sys	0m1.658s

  namhyung@leonhard:perf$ time make builtin-sched.o &> /dev/null

  real	0m16.936s
  user	0m15.157s
  sys	0m1.635s

You can see it easily when building perf without -j option. But I have
no idea why it takes so long..

Thanks,
Namhyung

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Borislav Petkov]

On Sat, Oct 27, 2012 at 12:31:42AM +0900, Namhyung Kim wrote:
> And I see a strange delay when compiling builtin-sched.o.  After
> building perf tools, I deleted builtin-{sched,test,script}.o to rebuild
> the only since they are largest ones.
> 
>   namhyung@leonhard:perf$ ls -lS *.c | head -3
>   -rw-r--r-- 1 namhyung namhyung 45522 2012-10-27 00:20 builtin-sched.c
>   -rw-r--r-- 1 namhyung namhyung 36372 2012-10-27 00:20 builtin-test.c
>   -rw-r--r-- 1 namhyung namhyung 35555 2012-10-27 00:20 builtin-script.c
> 
>   namhyung@leonhard:perf$ rm builtin-{sched,test,script}.o
> 
> 
> And then building each file with time command shows this:
> 
>   namhyung@leonhard:perf$ time make builtin-script.o &> /dev/null
> 
>   real	0m4.577s
>   user	0m2.755s
>   sys	0m1.655s
> 
>   namhyung@leonhard:perf$ time make builtin-test.o &> /dev/null
> 
>   real	0m4.486s
>   user	0m2.707s
>   sys	0m1.658s
> 
>   namhyung@leonhard:perf$ time make builtin-sched.o &> /dev/null
> 
>   real	0m16.936s
>   user	0m15.157s
>   sys	0m1.635s
> 
> You can see it easily when building perf without -j option. But I have
> no idea why it takes so long..

Well, you can trace that workload with perf itself, no, and see the
hotspots.

:-)

-- 
Regards/Gruss,
Boris.

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Arnaldo Carvalho de Melo]

Em Fri, Oct 26, 2012 at 05:34:32PM +0200, Borislav Petkov escreveu:
> On Sat, Oct 27, 2012 at 12:31:42AM +0900, Namhyung Kim wrote:
> > You can see it easily when building perf without -j option. But I have
> > no idea why it takes so long..
 
> Well, you can trace that workload with perf itself, no, and see the
> hotspots.

Right, perf'ing perf is a favourite pastime, right?

- Arnaldo

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Arnaldo Carvalho de Melo]

Em Fri, Oct 26, 2012 at 04:54:51PM +0200, Ingo Molnar escreveu:
> * Arnaldo Carvalho de Melo <acme@infradead.org> wrote:
> > . Makefile improvements from Namhyung Kim.
> 
> These are really useful: there used to be a couple of seconds of 
> wait time at the beginning of every perf build - these are now 
> nicely explained with the various CHK entries.

The optimal way, I guess, would be to have some cache file with the
results of such feature tests, that would be created and then used till
the build fails using its findings, which would trigger a new feature
check round, followed by an automatic rebuild.

That would be tricky because we would have to have an automated way of
discovering if the build failed due to missing packages or if it failed
due to some ordinary coding mistake.

- Arnaldo

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Borislav Petkov]

On Fri, Oct 26, 2012 at 09:31:15AM -0700, Arnaldo Carvalho de Melo wrote:
> Right, perf'ing perf is a favourite pastime, right?

Sure, can I get "perfing perf" on a T-shirt please?

-- 
Regards/Gruss,
    Boris.

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Namhyung Kim]

2012-10-26 (금), 19:20 +0200, Borislav Petkov:
> On Fri, Oct 26, 2012 at 09:31:15AM -0700, Arnaldo Carvalho de Melo wrote:
> > Right, perf'ing perf is a favourite pastime, right?
> 
> Sure, can I get "perfing perf" on a T-shirt please?

Well, guys, this is not perfing perf.  It's about perfing make and/or
gcc.  Anyway I'd also like to get a "perfing perf" T-shirt. ;)

Thanks,
Namhyung

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Ingo Molnar]

* Arnaldo Carvalho de Melo <acme@infradead.org> wrote:

> Em Fri, Oct 26, 2012 at 04:54:51PM +0200, Ingo Molnar escreveu:
> > * Arnaldo Carvalho de Melo <acme@infradead.org> wrote:
> > > . Makefile improvements from Namhyung Kim.
> > 
> > These are really useful: there used to be a couple of 
> > seconds of wait time at the beginning of every perf build - 
> > these are now nicely explained with the various CHK entries.
> 
> The optimal way, I guess, would be to have some cache file 
> with the results of such feature tests, that would be created 
> and then used till the build fails using its findings, which 
> would trigger a new feature check round, followed by an 
> automatic rebuild.
> 
> That would be tricky because we would have to have an 
> automated way of discovering if the build failed due to 
> missing packages or if it failed due to some ordinary coding 
> mistake.

The feature tests aren't a big problem right now - but making it 
*visible* is really useful. It also tells us which feature test 
fails, etc.

Thanks,

	Ingo

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Arnaldo Carvalho de Melo]

Em Sat, Oct 27, 2012 at 06:16:31PM +0900, Namhyung Kim escreveu:
> 2012-10-26 (금), 19:20 +0200, Borislav Petkov:
> > On Fri, Oct 26, 2012 at 09:31:15AM -0700, Arnaldo Carvalho de Melo wrote:
> > > Right, perf'ing perf is a favourite pastime, right?
> > 
> > Sure, can I get "perfing perf" on a T-shirt please?
> 
> Well, guys, this is not perfing perf.  It's about perfing make and/or
> gcc.  Anyway I'd also like to get a "perfing perf" T-shirt. ;)

Well, building perf faster will allow us to perf perf faster. ;-)

- Arnaldo

Re: [GIT PULL 0/9] perf/core improvements and fixes

[stephane eranian]

On Fri, Oct 26, 2012 at 5:31 PM, Namhyung Kim <namhyung@kernel.org> wrote:
> 2012-10-26 (금), 09:06 -0600, David Ahern:
>> On 10/26/12 8:54 AM, Ingo Molnar wrote:
>> >> perf/core improvements:
>> >>
>> >> . perf inject changes to allow showing where a task sleeps, from Andrew Vagin.
>> >>
>> >> . Makefile improvements from Namhyung Kim.
>> >
>> > These are really useful: there used to be a couple of seconds of
>> > wait time at the beginning of every perf build - these are now
>> > nicely explained with the various CHK entries.
>
> Kudos to Jiri who did the real work!
>
>>
>> PERF-VERSION-GEN and specifically the git commands are the cause of more
>> delay than the config checks, especially when doing the build in a VM
>> with the kernel source on an NFS mount.
>
> And I see a strange delay when compiling builtin-sched.o.  After
> building perf tools, I deleted builtin-{sched,test,script}.o to rebuild
> the only since they are largest ones.
>
Yes, I see that delay on copiling builtin-sched.c on my IVB system.
Don't know why it takes a significant number of seconds to compile
this file. It did not use to be like that a few revisions back. It takes
about 8 seconds on my OC'd IVB (> 4GHz).  I don't see much code
in that file.

>   namhyung@leonhard:perf$ ls -lS *.c | head -3
>   -rw-r--r-- 1 namhyung namhyung 45522 2012-10-27 00:20 builtin-sched.c
>   -rw-r--r-- 1 namhyung namhyung 36372 2012-10-27 00:20 builtin-test.c
>   -rw-r--r-- 1 namhyung namhyung 35555 2012-10-27 00:20 builtin-script.c
>
>   namhyung@leonhard:perf$ rm builtin-{sched,test,script}.o
>
>
> And then building each file with time command shows this:
>
>   namhyung@leonhard:perf$ time make builtin-script.o &> /dev/null
>
>   real  0m4.577s
>   user  0m2.755s
>   sys   0m1.655s
>
>   namhyung@leonhard:perf$ time make builtin-test.o &> /dev/null
>
>   real  0m4.486s
>   user  0m2.707s
>   sys   0m1.658s
>
>   namhyung@leonhard:perf$ time make builtin-sched.o &> /dev/null
>
>   real  0m16.936s
>   user  0m15.157s
>   sys   0m1.635s
>
> You can see it easily when building perf without -j option. But I have
> no idea why it takes so long..
>
> Thanks,
> Namhyung
>
>

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Ingo Molnar]

* Ingo Molnar <mingo@kernel.org> wrote:

> 
> * Arnaldo Carvalho de Melo <acme@infradead.org> wrote:
> 
> > Em Fri, Oct 26, 2012 at 04:54:51PM +0200, Ingo Molnar escreveu:
> > > * Arnaldo Carvalho de Melo <acme@infradead.org> wrote:
> > > > . Makefile improvements from Namhyung Kim.
> > > 
> > > These are really useful: there used to be a couple of 
> > > seconds of wait time at the beginning of every perf build - 
> > > these are now nicely explained with the various CHK entries.
> > 
> > The optimal way, I guess, would be to have some cache file 
> > with the results of such feature tests, that would be created 
> > and then used till the build fails using its findings, which 
> > would trigger a new feature check round, followed by an 
> > automatic rebuild.
> > 
> > That would be tricky because we would have to have an 
> > automated way of discovering if the build failed due to 
> > missing packages or if it failed due to some ordinary coding 
> > mistake.
> 
> The feature tests aren't a big problem right now - but making 
> it *visible* is really useful. It also tells us which feature 
> test fails, etc.

Btw., there's another thing that would be nice in addition to 
simplifying the PERF-VERSION-GEN script: to be able to run the 
CHK tests in parallel, like the object file runes.

Right now the CHK tests are serialized and they take several 
seconds to build and run. A parallel make rule would reduce
that to about a second I think.

Thanks,

	Ingo

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Peter Zijlstra]

On Tue, 2012-10-30 at 09:18 +0100, Ingo Molnar wrote:
> > > The optimal way, I guess, would be to have some cache file 
> > > with the results of such feature tests, that would be created 
> > > and then used till the build fails using its findings, which 
> > > would trigger a new feature check round, followed by an 
> > > automatic rebuild. 

autoconf!! ;-)

/me runs

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Ingo Molnar]

* Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:

> On Tue, 2012-10-30 at 09:18 +0100, Ingo Molnar wrote:
> > > > The optimal way, I guess, would be to have some cache file 
> > > > with the results of such feature tests, that would be created 
> > > > and then used till the build fails using its findings, which 
> > > > would trigger a new feature check round, followed by an 
> > > > automatic rebuild. 

I did not write that.

I think making the feature tests parallel would be enough to 
speed it all up - caching brings in a new set of problems. The 
tests are mostly independent and the feature test makefile rules 
could be parallelized like the object file rules.

> autoconf!! ;-)
> 
> /me runs

hey, we build perf much faster than autoconf's 'configure' 
script finishes running ;-)

Thanks,

	Ingo

[GIT PULL 0/9] perf/core improvements and fixes

[Jiri Olsa]

hi Ingo,
please consider pulling

thanks,
jirka


The following changes since commit e450f90e8c7d0bf70519223c1b848446ae63f313:

  Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf into perf/core (2014-05-22 11:37:40 +0200)

are available in the git repository at:


  git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git tags/perf-core-for-mingo

for you to fetch changes up to 34cfec19bd8496279d283498b97069d9a0f7e130:

  tools lib traceevent: Added support for __get_bitmask() macro (2014-05-28 15:08:26 +0200)

----------------------------------------------------------------
perf/core improvements and fixes:

. Added support for __get_bitmask() macro to traceevent library (Steven Rostedt)

. Allow overriding sysfs and proc finding with env var (Cody P Schafer)

. Consider header files outside perf directory in tags target (Sebastian Andrzej Siewior)

. Add warning when disabling perl scripting support due to missing devel files (Arnaldo Carvalho de Melo)

. Warn the user when trace command is not available (Arnaldo Carvalho de Melo)

. Pass protection and flags bits through mmap2 interface (Peter Zijlstra)

. Update perf tool mmap2 interface with protection and flag bits (Don Zickus)

. Re-enable mmap interface (Don Zickus)

. Add mem-mode documentation to report command (Don Zickus)

Signed-off-by: Jiri Olsa <jolsa@kernel.org>

----------------------------------------------------------------
Arnaldo Carvalho de Melo (2):
      perf trace: Warn the user when not available
      perf tools: Add warning when disabling perl scripting support due to missing devel files

Cody P Schafer (1):
      perf tools: Allow overriding sysfs and proc finding with env var

Don Zickus (3):
      Revert "perf: Disable PERF_RECORD_MMAP2 support"
      perf tools: Update mmap2 interface with protection and flag bits
      perf report: Add mem-mode documentation to report command

Peter Zijlstra (1):
      perf: Pass protection and flags bits through mmap2 interface

Sebastian Andrzej Siewior (1):
      perf tools: Consider header files outside perf directory in tags target

Steven Rostedt (Red Hat) (1):
      tools lib traceevent: Added support for __get_bitmask() macro

 include/uapi/linux/perf_event.h                    |   1 +
 kernel/events/core.c                               |  37 ++++++-
 tools/lib/api/fs/fs.c                              |  43 +++++++-
 tools/lib/traceevent/event-parse.c                 | 113 +++++++++++++++++++++
 tools/lib/traceevent/event-parse.h                 |   7 ++
 tools/perf/Documentation/perf-report.txt           |  22 ++++
 tools/perf/Makefile.perf                           |   9 +-
 tools/perf/config/Makefile                         |   1 +
 tools/perf/perf.c                                  |   8 +-
 tools/perf/tests/dwarf-unwind.c                    |   2 +-
 tools/perf/util/event.c                            |  59 +++++++----
 tools/perf/util/event.h                            |   2 +
 tools/perf/util/evsel.c                            |   1 +
 tools/perf/util/machine.c                          |   4 +-
 tools/perf/util/map.c                              |   4 +-
 tools/perf/util/map.h                              |   4 +-
 .../perf/util/scripting-engines/trace-event-perl.c |   1 +
 .../util/scripting-engines/trace-event-python.c    |   1 +
 18 files changed, 286 insertions(+), 33 deletions(-)

[GIT PULL 0/9] perf/core improvements and fixes

[Jiri Olsa]

hi Ingo,
please consider pulling

thanks,
jirka


The following changes since commit 9b261365dd73a5014b49033327ad881708e81f33:

  Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf into perf/core (2014-06-03 20:22:40 +0200)

are available in the git repository at:


  git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git tags/perf-core-for-mingo

for you to fetch changes up to fc9cabeabf42d76854059e7bce81a02645e7e5ca:

  perf tools: Fix 'make help' message error (2014-06-03 21:35:12 +0200)

----------------------------------------------------------------
perf/core improvements and fixes:

. Warn the user when trace command is not available (Arnaldo Carvalho de Melo)

. Add warning when disabling perl scripting support due to missing devel files (Arnaldo Carvalho de Melo)

. Consider header files outside perf directory in tags target (Sebastian Andrzej Siewior)

. Allow overriding sysfs and proc finding with env var (Cody P Schafer)

. Fix "==" into "=" in ui_browser__warning assignment (zhangdianfang)

. Factor elide bool handling in sort code (Jiri Olsa)

. Fix poll return value propagation (Jiri Olsa)

. Fix 'make help' message error (Jianyu Zhan)

Signed-off-by: Jiri Olsa <jolsa@kernel.org>

----------------------------------------------------------------
Arnaldo Carvalho de Melo (2):
      perf trace: Warn the user when not available
      perf tools: Add warning when disabling perl scripting support due to missing devel files

Cody P Schafer (1):
      perf tools: Allow overriding sysfs and proc finding with env var

Jianyu Zhan (1):
      perf tools: Fix 'make help' message error

Jiri Olsa (3):
      perf tools: Remove elide setup for SORT_MODE__MEMORY mode
      perf tools: Move elide bool into perf_hpp_fmt struct
      perf record: Fix poll return value propagation

Sebastian Andrzej Siewior (1):
      perf tools: Consider header files outside perf directory in tags target

zhangdianfang (1):
      perf tools: Fix "==" into "=" in ui_browser__warning assignment

 tools/lib/api/fs/fs.c          |  43 ++++++++++++++++-
 tools/perf/Makefile.perf       |  13 ++++--
 tools/perf/builtin-record.c    |   6 ++-
 tools/perf/config/Makefile     |   3 +-
 tools/perf/perf.c              |   8 +++-
 tools/perf/ui/browser.c        |   2 +-
 tools/perf/ui/browsers/hists.c |   8 ++--
 tools/perf/util/hist.h         |   8 +++-
 tools/perf/util/sort.c         | 103 ++++++++++++++++++++++-------------------
 tools/perf/util/sort.h         |   2 +-
 10 files changed, 132 insertions(+), 64 deletions(-)

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Ingo Molnar]

* Jiri Olsa <jolsa@kernel.org> wrote:

> hi Ingo,
> please consider pulling
> 
> thanks,
> jirka
> 
> 
> The following changes since commit 9b261365dd73a5014b49033327ad881708e81f33:
> 
>   Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf into perf/core (2014-06-03 20:22:40 +0200)
> 
> are available in the git repository at:
> 
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git tags/perf-core-for-mingo
> 
> for you to fetch changes up to fc9cabeabf42d76854059e7bce81a02645e7e5ca:
> 
>   perf tools: Fix 'make help' message error (2014-06-03 21:35:12 +0200)
> 
> ----------------------------------------------------------------
> perf/core improvements and fixes:
> 
> . Warn the user when trace command is not available (Arnaldo Carvalho de Melo)
> 
> . Add warning when disabling perl scripting support due to missing devel files (Arnaldo Carvalho de Melo)
> 
> . Consider header files outside perf directory in tags target (Sebastian Andrzej Siewior)
> 
> . Allow overriding sysfs and proc finding with env var (Cody P Schafer)
> 
> . Fix "==" into "=" in ui_browser__warning assignment (zhangdianfang)
> 
> . Factor elide bool handling in sort code (Jiri Olsa)
> 
> . Fix poll return value propagation (Jiri Olsa)
> 
> . Fix 'make help' message error (Jianyu Zhan)
> 
> Signed-off-by: Jiri Olsa <jolsa@kernel.org>
> 
> ----------------------------------------------------------------
> Arnaldo Carvalho de Melo (2):
>       perf trace: Warn the user when not available
>       perf tools: Add warning when disabling perl scripting support due to missing devel files
> 
> Cody P Schafer (1):
>       perf tools: Allow overriding sysfs and proc finding with env var
> 
> Jianyu Zhan (1):
>       perf tools: Fix 'make help' message error
> 
> Jiri Olsa (3):
>       perf tools: Remove elide setup for SORT_MODE__MEMORY mode
>       perf tools: Move elide bool into perf_hpp_fmt struct
>       perf record: Fix poll return value propagation
> 
> Sebastian Andrzej Siewior (1):
>       perf tools: Consider header files outside perf directory in tags target
> 
> zhangdianfang (1):
>       perf tools: Fix "==" into "=" in ui_browser__warning assignment
> 
>  tools/lib/api/fs/fs.c          |  43 ++++++++++++++++-
>  tools/perf/Makefile.perf       |  13 ++++--
>  tools/perf/builtin-record.c    |   6 ++-
>  tools/perf/config/Makefile     |   3 +-
>  tools/perf/perf.c              |   8 +++-
>  tools/perf/ui/browser.c        |   2 +-
>  tools/perf/ui/browsers/hists.c |   8 ++--
>  tools/perf/util/hist.h         |   8 +++-
>  tools/perf/util/sort.c         | 103 ++++++++++++++++++++++-------------------
>  tools/perf/util/sort.h         |   2 +-
>  10 files changed, 132 insertions(+), 64 deletions(-)

Pulled, thanks a lot Jiri!

	Ingo

[GIT PULL 0/9] perf/core improvements and fixes

[Jiri Olsa]

hi Ingo,
please consider pulling

thanks,
jirka


The following changes since commit 4ba96195051be30160af6d5f5f83f9a055ab1f23:

  Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf into perf/core (2014-06-13 08:19:06 +0200)

are available in the git repository at:


  git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git tags/perf-core-for-mingo

for you to fetch changes up to 26d664a30d08002ac0a4dbd09217ea084da07bc9:

  perf symbols: Get kernel start address by symbol name (2014-06-19 18:18:38 +0200)

----------------------------------------------------------------
perf/core improvements and fixes:

. Updates from trace-cmd for traceevent plugin_kvm plus args cleanup (Steven Rostedt)

. Fix kernel start address lookup in report code (Simon Que)

. Fix segfault in cumulative.callchain report (Jiri Olsa)

Signed-off-by: Jiri Olsa <jolsa@kernel.org>

----------------------------------------------------------------
Jan Kiszka (3):
      tools lib traceevent: Report unknown VMX exit reasons with code
      tools lib traceevent: Factor out print_exit_reason in kvm plugin
      tools lib traceevent: Fix and cleanup kvm_nested_vmexit tracepoints

Jiri Olsa (1):
      perf tools: Fix segfault in cumulative.callchain report

Simon Que (1):
      perf symbols: Get kernel start address by symbol name

Steven Rostedt (3):
      tools lib traceevent: Fix format in plugin_kvm
      tools lib traceevent: Clean up format of args in cfg80211 plugin
      tools lib traceevent: Clean up format of args in jbd2 plugin

Steven Rostedt (Red Hat) (1):
      tools lib traceevent: Add back in kvm plugins nested_vmexit events

 tools/lib/traceevent/plugin_cfg80211.c |  3 +-
 tools/lib/traceevent/plugin_jbd2.c     |  6 ++--
 tools/lib/traceevent/plugin_kvm.c      | 64 +++++++++++++++++++++++++++++-----
 tools/perf/ui/browsers/hists.c         | 21 ++++++++---
 tools/perf/util/machine.c              | 54 ++++++++++++----------------
 5 files changed, 97 insertions(+), 51 deletions(-)

[GIT PULL 0/9] perf/core improvements and fixes

[Arnaldo Carvalho de Melo]

Hi Ingo,

	Please consider pulling,

- Arnaldo

The following changes since commit f1d800bf615b84ca253af372d2dac8cdef743a20:

  Merge tag 'perf-ebpf-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2015-08-08 10:05:17 +0200)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo

for you to fetch changes up to 4605bb55b91449a1a953a51f0334d3bc02351adb:

  perf evlist: Be more specific on -F/--freq (2015-08-10 17:20:26 -0300)

----------------------------------------------------------------
perf/core improvements and fixes:

User visible:

- Introduce 'srcfile' sort key: (Andi Kleen)

  # perf record -F 10000 usleep 1
  # perf report --stdio --dsos '[kernel.vmlinux]' -s srcfile
  <SNIP>
  # Overhead  Source File
      26.49%  copy_page_64.S
       5.49%  signal.c
       0.51%  msr.h
  #

  It can be combined with other fields, for instance, experiment with
  '-s srcfile,symbol'.

  There are some oddities in some distros and with some specific DSOs, being
  investigated, so your mileage may vary.

- Update the column width for the "srcline" sort key (Arnaldo Carvalho de Melo)

- Support per-event 'freq' term: (Namhyung Kim)

  $ perf record -e 'cpu/instructions,freq=1234/',cycles -c 1000 sleep 1
  $ perf evlist -F
  cpu/instructions,freq=1234/: sample_freq=1234
  cycles: sample_period=1000
  $

Infrastructure:

- Move perf_counts struct and functions into separate object (Jiri Olsa)

- Unset perf_event_attr::freq when period term is set (Jiri Olsa)

- Move callchain option parsing code to util.c (Kan Liang)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

----------------------------------------------------------------
Andi Kleen (2):
      perf tools: Support full source file paths for srcline
      perf report: Add support for srcfile sort key

Arnaldo Carvalho de Melo (2):
      perf hists: hist_entry__cmp() may use he_tmp.hists, initialize it
      perf hists: Update the column width for the "srcline" sort key

Jiri Olsa (2):
      perf stat: Move perf_counts struct and functions into separate object
      perf tools: Unset perf_event_attr::freq when period term is set

Kan Liang (1):
      perf callchain: Move option parsing code to util.c

Namhyung Kim (2):
      perf record: Support per-event freq term
      perf evlist: Be more specific on -F/--freq

 tools/perf/Documentation/perf-record.txt |  1 +
 tools/perf/Documentation/perf-report.txt |  4 ++
 tools/perf/Documentation/perf-script.txt |  3 ++
 tools/perf/builtin-report.c              |  2 +
 tools/perf/builtin-script.c              |  2 +
 tools/perf/builtin-stat.c                |  1 +
 tools/perf/util/Build                    |  1 +
 tools/perf/util/callchain.c              | 89 +------------------------------
 tools/perf/util/callchain.h              |  1 +
 tools/perf/util/counts.c                 | 52 ++++++++++++++++++
 tools/perf/util/counts.h                 | 37 +++++++++++++
 tools/perf/util/evsel.c                  | 14 ++++-
 tools/perf/util/evsel.h                  |  4 +-
 tools/perf/util/hist.c                   |  9 ++++
 tools/perf/util/hist.h                   |  1 +
 tools/perf/util/parse-events.c           |  6 +++
 tools/perf/util/parse-events.h           |  1 +
 tools/perf/util/parse-events.l           |  1 +
 tools/perf/util/pmu.c                    |  2 +-
 tools/perf/util/python-ext-sources       |  2 +-
 tools/perf/util/sort.c                   | 52 ++++++++++++++++++
 tools/perf/util/sort.h                   |  2 +
 tools/perf/util/srcline.c                |  6 ++-
 tools/perf/util/stat.c                   | 49 -----------------
 tools/perf/util/stat.h                   | 30 -----------
 tools/perf/util/util.c                   | 90 ++++++++++++++++++++++++++++++++
 tools/perf/util/util.h                   |  3 ++
 27 files changed, 292 insertions(+), 173 deletions(-)
 create mode 100644 tools/perf/util/counts.c
 create mode 100644 tools/perf/util/counts.h

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Ingo Molnar]

* Arnaldo Carvalho de Melo <acme@kernel.org> wrote:

> Hi Ingo,
> 
> 	Please consider pulling,
> 
> - Arnaldo
> 
> The following changes since commit f1d800bf615b84ca253af372d2dac8cdef743a20:
> 
>   Merge tag 'perf-ebpf-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2015-08-08 10:05:17 +0200)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo
> 
> for you to fetch changes up to 4605bb55b91449a1a953a51f0334d3bc02351adb:
> 
>   perf evlist: Be more specific on -F/--freq (2015-08-10 17:20:26 -0300)
> 
> ----------------------------------------------------------------
> perf/core improvements and fixes:
> 
> User visible:
> 
> - Introduce 'srcfile' sort key: (Andi Kleen)
> 
>   # perf record -F 10000 usleep 1
>   # perf report --stdio --dsos '[kernel.vmlinux]' -s srcfile
>   <SNIP>
>   # Overhead  Source File
>       26.49%  copy_page_64.S
>        5.49%  signal.c
>        0.51%  msr.h
>   #
> 
>   It can be combined with other fields, for instance, experiment with
>   '-s srcfile,symbol'.
> 
>   There are some oddities in some distros and with some specific DSOs, being
>   investigated, so your mileage may vary.
> 
> - Update the column width for the "srcline" sort key (Arnaldo Carvalho de Melo)
> 
> - Support per-event 'freq' term: (Namhyung Kim)
> 
>   $ perf record -e 'cpu/instructions,freq=1234/',cycles -c 1000 sleep 1
>   $ perf evlist -F
>   cpu/instructions,freq=1234/: sample_freq=1234
>   cycles: sample_period=1000
>   $
> 
> Infrastructure:
> 
> - Move perf_counts struct and functions into separate object (Jiri Olsa)
> 
> - Unset perf_event_attr::freq when period term is set (Jiri Olsa)
> 
> - Move callchain option parsing code to util.c (Kan Liang)
> 
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
> 
> ----------------------------------------------------------------
> Andi Kleen (2):
>       perf tools: Support full source file paths for srcline
>       perf report: Add support for srcfile sort key
> 
> Arnaldo Carvalho de Melo (2):
>       perf hists: hist_entry__cmp() may use he_tmp.hists, initialize it
>       perf hists: Update the column width for the "srcline" sort key
> 
> Jiri Olsa (2):
>       perf stat: Move perf_counts struct and functions into separate object
>       perf tools: Unset perf_event_attr::freq when period term is set
> 
> Kan Liang (1):
>       perf callchain: Move option parsing code to util.c
> 
> Namhyung Kim (2):
>       perf record: Support per-event freq term
>       perf evlist: Be more specific on -F/--freq
> 
>  tools/perf/Documentation/perf-record.txt |  1 +
>  tools/perf/Documentation/perf-report.txt |  4 ++
>  tools/perf/Documentation/perf-script.txt |  3 ++
>  tools/perf/builtin-report.c              |  2 +
>  tools/perf/builtin-script.c              |  2 +
>  tools/perf/builtin-stat.c                |  1 +
>  tools/perf/util/Build                    |  1 +
>  tools/perf/util/callchain.c              | 89 +------------------------------
>  tools/perf/util/callchain.h              |  1 +
>  tools/perf/util/counts.c                 | 52 ++++++++++++++++++
>  tools/perf/util/counts.h                 | 37 +++++++++++++
>  tools/perf/util/evsel.c                  | 14 ++++-
>  tools/perf/util/evsel.h                  |  4 +-
>  tools/perf/util/hist.c                   |  9 ++++
>  tools/perf/util/hist.h                   |  1 +
>  tools/perf/util/parse-events.c           |  6 +++
>  tools/perf/util/parse-events.h           |  1 +
>  tools/perf/util/parse-events.l           |  1 +
>  tools/perf/util/pmu.c                    |  2 +-
>  tools/perf/util/python-ext-sources       |  2 +-
>  tools/perf/util/sort.c                   | 52 ++++++++++++++++++
>  tools/perf/util/sort.h                   |  2 +
>  tools/perf/util/srcline.c                |  6 ++-
>  tools/perf/util/stat.c                   | 49 -----------------
>  tools/perf/util/stat.h                   | 30 -----------
>  tools/perf/util/util.c                   | 90 ++++++++++++++++++++++++++++++++
>  tools/perf/util/util.h                   |  3 ++
>  27 files changed, 292 insertions(+), 173 deletions(-)
>  create mode 100644 tools/perf/util/counts.c
>  create mode 100644 tools/perf/util/counts.h

Pulled, thanks a lot Arnaldo!

	Ingo

[GIT PULL 0/9] perf/core improvements and fixes

[Arnaldo Carvalho de Melo]

Hi Ingo,

	Please consider pulling,

- Arnaldo

The following changes since commit 82819ffb42fb45197bacf3223191deca31d3eb91:

  perf/x86/msr: Fix the MSR driver build (2015-08-21 08:17:01 +0200)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo

for you to fetch changes up to 1c0bd0e891aaed0219010bfe79b32e1b0b82d662:

  perf probe: Try to use symbol table if searching debug info failed (2015-08-21 12:57:20 -0300)

----------------------------------------------------------------
perf/core improvements and fixes:

User visible:

- Fix segfault using 'perf script --show-mmap-events', affects
  only current perf/core (Adrian Hunter).

- /proc/kcore requires CAP_SYS_RAWIO message too noisy, make it
  debug only (Adrian Hunter)

- Fix Intel PT timestamp handling (Adrian Hunter)

- Add Intel BTS support, with a call-graph script to show it and
  PT in use in a GUI using 'perf script' python scripting with
  postgresql and Qt (Adrian Hunter)

- Add checks for returned EVENT_ERROR type in libtraceevent, fixing
  a bug that surfaced on arm64 systems (Dean Nelson)

- Fallback to using kallsyms when libdw fails to handle a vmlinux file,
  that can happen, for instance, when perf is statically linked and
  then libdw fails to load libebl_{arch}.so (Wang Nan)

Infrastructure:

- Initialize reference counts in map__clone() (Arnaldo Carvalho de Melo)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

----------------------------------------------------------------
Adrian Hunter (6):
      perf script: Fix segfault using --show-mmap-events
      perf tools: /proc/kcore requires CAP_SYS_RAWIO message too noisy
      perf tools: Fix Intel PT timestamp handling
      perf tools: Add Intel BTS support
      perf tools: Put itrace options into an asciidoc include
      perf tools: Add example call-graph script

Arnaldo Carvalho de Melo (1):
      perf tools: Initialize reference counts in map__clone()

Dean Nelson (1):
      tools lib traceevent: Add checks for returned EVENT_ERROR type

Wang Nan (1):
      perf probe: Try to use symbol table if searching debug info failed

 tools/lib/traceevent/event-parse.c                 |   9 +
 tools/perf/Documentation/intel-bts.txt             |  86 ++
 tools/perf/Documentation/itrace.txt                |  22 +
 tools/perf/Documentation/perf-inject.txt           |  23 +-
 tools/perf/Documentation/perf-report.txt           |  23 +-
 tools/perf/Documentation/perf-script.txt           |  23 +-
 tools/perf/arch/x86/util/Build                     |   1 +
 tools/perf/arch/x86/util/auxtrace.c                |  49 +-
 tools/perf/arch/x86/util/intel-bts.c               | 458 ++++++++++
 tools/perf/arch/x86/util/pmu.c                     |   3 +
 .../scripts/python/call-graph-from-postgresql.py   | 327 ++++++++
 tools/perf/scripts/python/export-to-postgresql.py  |  47 ++
 tools/perf/util/Build                              |   1 +
 tools/perf/util/annotate.c                         |   1 +
 tools/perf/util/auxtrace.c                         |   3 +
 tools/perf/util/auxtrace.h                         |   1 +
 tools/perf/util/evlist.c                           |   2 +-
 tools/perf/util/intel-bts.c                        | 933 +++++++++++++++++++++
 tools/perf/util/intel-bts.h                        |  43 +
 tools/perf/util/intel-pt.c                         |   2 +-
 tools/perf/util/map.c                              |  13 +-
 tools/perf/util/pmu.c                              |   4 -
 tools/perf/util/probe-event.c                      |   7 +-
 tools/perf/util/symbol.c                           |   4 +-
 24 files changed, 2004 insertions(+), 81 deletions(-)
 create mode 100644 tools/perf/Documentation/intel-bts.txt
 create mode 100644 tools/perf/Documentation/itrace.txt
 create mode 100644 tools/perf/arch/x86/util/intel-bts.c
 create mode 100644 tools/perf/scripts/python/call-graph-from-postgresql.py
 create mode 100644 tools/perf/util/intel-bts.c
 create mode 100644 tools/perf/util/intel-bts.h

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Ingo Molnar]

* Arnaldo Carvalho de Melo <acme@kernel.org> wrote:

> Hi Ingo,
> 
> 	Please consider pulling,
> 
> - Arnaldo
> 
> The following changes since commit 82819ffb42fb45197bacf3223191deca31d3eb91:
> 
>   perf/x86/msr: Fix the MSR driver build (2015-08-21 08:17:01 +0200)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo
> 
> for you to fetch changes up to 1c0bd0e891aaed0219010bfe79b32e1b0b82d662:
> 
>   perf probe: Try to use symbol table if searching debug info failed (2015-08-21 12:57:20 -0300)
> 
> ----------------------------------------------------------------
> perf/core improvements and fixes:
> 
> User visible:
> 
> - Fix segfault using 'perf script --show-mmap-events', affects
>   only current perf/core (Adrian Hunter).
> 
> - /proc/kcore requires CAP_SYS_RAWIO message too noisy, make it
>   debug only (Adrian Hunter)
> 
> - Fix Intel PT timestamp handling (Adrian Hunter)
> 
> - Add Intel BTS support, with a call-graph script to show it and
>   PT in use in a GUI using 'perf script' python scripting with
>   postgresql and Qt (Adrian Hunter)
> 
> - Add checks for returned EVENT_ERROR type in libtraceevent, fixing
>   a bug that surfaced on arm64 systems (Dean Nelson)
> 
> - Fallback to using kallsyms when libdw fails to handle a vmlinux file,
>   that can happen, for instance, when perf is statically linked and
>   then libdw fails to load libebl_{arch}.so (Wang Nan)
> 
> Infrastructure:
> 
> - Initialize reference counts in map__clone() (Arnaldo Carvalho de Melo)
> 
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
> 
> ----------------------------------------------------------------
> Adrian Hunter (6):
>       perf script: Fix segfault using --show-mmap-events
>       perf tools: /proc/kcore requires CAP_SYS_RAWIO message too noisy
>       perf tools: Fix Intel PT timestamp handling
>       perf tools: Add Intel BTS support
>       perf tools: Put itrace options into an asciidoc include
>       perf tools: Add example call-graph script
> 
> Arnaldo Carvalho de Melo (1):
>       perf tools: Initialize reference counts in map__clone()
> 
> Dean Nelson (1):
>       tools lib traceevent: Add checks for returned EVENT_ERROR type
> 
> Wang Nan (1):
>       perf probe: Try to use symbol table if searching debug info failed
> 
>  tools/lib/traceevent/event-parse.c                 |   9 +
>  tools/perf/Documentation/intel-bts.txt             |  86 ++
>  tools/perf/Documentation/itrace.txt                |  22 +
>  tools/perf/Documentation/perf-inject.txt           |  23 +-
>  tools/perf/Documentation/perf-report.txt           |  23 +-
>  tools/perf/Documentation/perf-script.txt           |  23 +-
>  tools/perf/arch/x86/util/Build                     |   1 +
>  tools/perf/arch/x86/util/auxtrace.c                |  49 +-
>  tools/perf/arch/x86/util/intel-bts.c               | 458 ++++++++++
>  tools/perf/arch/x86/util/pmu.c                     |   3 +
>  .../scripts/python/call-graph-from-postgresql.py   | 327 ++++++++
>  tools/perf/scripts/python/export-to-postgresql.py  |  47 ++
>  tools/perf/util/Build                              |   1 +
>  tools/perf/util/annotate.c                         |   1 +
>  tools/perf/util/auxtrace.c                         |   3 +
>  tools/perf/util/auxtrace.h                         |   1 +
>  tools/perf/util/evlist.c                           |   2 +-
>  tools/perf/util/intel-bts.c                        | 933 +++++++++++++++++++++
>  tools/perf/util/intel-bts.h                        |  43 +
>  tools/perf/util/intel-pt.c                         |   2 +-
>  tools/perf/util/map.c                              |  13 +-
>  tools/perf/util/pmu.c                              |   4 -
>  tools/perf/util/probe-event.c                      |   7 +-
>  tools/perf/util/symbol.c                           |   4 +-
>  24 files changed, 2004 insertions(+), 81 deletions(-)
>  create mode 100644 tools/perf/Documentation/intel-bts.txt
>  create mode 100644 tools/perf/Documentation/itrace.txt
>  create mode 100644 tools/perf/arch/x86/util/intel-bts.c
>  create mode 100644 tools/perf/scripts/python/call-graph-from-postgresql.py
>  create mode 100644 tools/perf/util/intel-bts.c
>  create mode 100644 tools/perf/util/intel-bts.h

Pulled, thanks a lot Arnaldo!

	Ingo

[GIT PULL 0/9] perf/core improvements and fixes

[Arnaldo Carvalho de Melo]

Hi Ingo,

	Please consider pulling,

- Arnaldo

The following changes since commit 96f3eda67fcf2598e9d2794398e0e7ab35138ea6:

  perf/x86/intel: Fix static checker warning in lbr enable (2015-09-18 09:24:57 +0200)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo

for you to fetch changes up to e803cf97a4f90d31bcc2c9a1ea20fe9cdc12b2f9:

  perf record: Synthesize COMM event for a command line workload (2015-09-22 22:43:12 -0300)

----------------------------------------------------------------
perf/core improvements and fixes:

User visible:

- Fix a segfault in 'perf probe' when removing uprobe events (Masami Hiramatsu)

- Synthesize COMM event for workloads started from the command line in 'perf
  record' so that we can have the pid->comm mapping before we get the real
  PERF_RECORD_COMM switching from perf to the workload (Namhyung Kim)

- Fix build tools/vm/ due to removal of tools/lib/api/fs/debugfs.h
  (Arnaldo Carvalho de Melo)

Developer stuff:

- Fix the make tarball targets by including the recently added err.h header in
  the perf MANIFEST file (Jiri Olsa)

- Don't assume that the event parser returns a non empty evlist (Wang Nan)

- Add way to disambiguate feature detection state files, needed to use
  tools/build feature detection for multiple components in a single O= output
  dir, which will be the case with tools/perf/ and tools/lib/bpf/
  (Arnaldo Carvalho de Melo)

- Fixup FEATURE_{TESTS,DISPLAY} inversion in tools/lib/bpf/ (Arnaldo Carvalho de Melo)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

----------------------------------------------------------------
Arnaldo Carvalho de Melo (5):
      tools build: Fixup feature detection display function name
      tools lib bpf: Fix up FEATURE_{TESTS,DISPLAY} usage
      tools build: Allow setting the feature detection user
      tools lib bpf: Use FEATURE_USER to allow building in the same dir as perf
      tools vm: Fix build due to removal of tools/lib/api/fs/debugfs.h

Jiri Olsa (1):
      perf tools: Add include/err.h into MANIFEST

Masami Hiramatsu (1):
      perf probe: Fix a segfault when removing uprobe events

Namhyung Kim (1):
      perf record: Synthesize COMM event for a command line workload

Wang Nan (1):
      perf tools: Don't assume that the parser returns non empty evsel list

 tools/build/Makefile.feature   |  9 +++++----
 tools/lib/bpf/Makefile         |  5 +++--
 tools/perf/MANIFEST            |  1 +
 tools/perf/builtin-probe.c     |  7 +++++--
 tools/perf/builtin-record.c    | 15 ++++++++++++++-
 tools/perf/util/event.c        |  2 +-
 tools/perf/util/event.h        |  5 +++++
 tools/perf/util/parse-events.c | 16 ++++++++++++++++
 tools/vm/page-types.c          |  6 +++---
 9 files changed, 53 insertions(+), 13 deletions(-)

[PATCH 1/9] perf probe: Fix a segfault when removing uprobe events

[Arnaldo Carvalho de Melo]

From: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>

Fix a segfault bug and a small mistake in perf probe -d.

Since the "ulist" in perf_del_probe_events is never initialized,
strlist__add(ulist, *) always causes a segfault when removing
uprobe events by perf probe -d.

Also, the "str" local variable is never released if fail to
allocate the "klist". This fixes it too.

This has been introduced by the commit e607f1426b58 ("perf probe:
Print deleted events in cmd_probe()").

Reported-by: Milian Wolff <milian.wolff@kdab.com>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20150916125241.4446.44805.stgit@localhost.localdomain
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/builtin-probe.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
index 94385ee89dc8..f7882ae9ebc6 100644
--- a/tools/perf/builtin-probe.c
+++ b/tools/perf/builtin-probe.c
@@ -380,8 +380,11 @@ static int perf_del_probe_events(struct strfilter *filter)
 		goto out;
 
 	klist = strlist__new(NULL, NULL);
-	if (!klist)
-		return -ENOMEM;
+	ulist = strlist__new(NULL, NULL);
+	if (!klist || !ulist) {
+		ret = -ENOMEM;
+		goto out;
+	}
 
 	ret = probe_file__get_events(kfd, filter, klist);
 	if (ret == 0) {
-- 
2.1.0

[PATCH 2/9] perf tools: Don't assume that the parser returns non empty evsel list

[Arnaldo Carvalho de Melo]

From: Wang Nan <wangnan0@huawei.com>

Don't blindly retrieve and use a last element in the lists returned by
parse_events__scanner(), as it may have collected no entries, i.e.
return an empty list.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Ahern <dsahern@gmail.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kaixu Xia <xiakaixu@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1441523623-152703-2-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/parse-events.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 0fde5293a38e..61c2bc20926d 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -827,6 +827,11 @@ void parse_events__set_leader(char *name, struct list_head *list)
 {
 	struct perf_evsel *leader;
 
+	if (list_empty(list)) {
+		WARN_ONCE(true, "WARNING: failed to set leader: empty list");
+		return;
+	}
+
 	__perf_evlist__set_leader(list);
 	leader = list_entry(list->next, struct perf_evsel, node);
 	leader->group_name = name ? strdup(name) : NULL;
@@ -1176,6 +1181,11 @@ int parse_events(struct perf_evlist *evlist, const char *str,
 	if (!ret) {
 		struct perf_evsel *last;
 
+		if (list_empty(&data.list)) {
+			WARN_ONCE(true, "WARNING: event parser found nothing");
+			return -1;
+		}
+
 		perf_evlist__splice_list_tail(evlist, &data.list);
 		evlist->nr_groups += data.nr_groups;
 		last = perf_evlist__last(evlist);
@@ -1285,6 +1295,12 @@ foreach_evsel_in_last_glob(struct perf_evlist *evlist,
 	struct perf_evsel *last = NULL;
 	int err;
 
+	/*
+	 * Don't return when list_empty, give func a chance to report
+	 * error when it found last == NULL.
+	 *
+	 * So no need to WARN here, let *func do this.
+	 */
 	if (evlist->nr_entries > 0)
 		last = perf_evlist__last(evlist);
 
-- 
2.1.0

[PATCH 3/9] tools build: Fixup feature detection display function name

[Arnaldo Carvalho de Melo]

From: Arnaldo Carvalho de Melo <acme@redhat.com>

Cut'n'paste mistake, it should eval the name of the function
defined right next to it, in the next line, fix it.

Before:

  $ make -C tools/lib/bpf/
  make: Entering directory '/home/git/linux/tools/lib/bpf'

  Auto-detecting system features:
  ...                        libelf: [ on  ]
  ...             libelf-getphdrnum: [ on  ]
  ...                   libelf-mmap: [ on  ]
  ...                           bpf: [ on  ]
  <SNIP>

After:

  $ make -C tools/lib/bpf/
  make: Entering directory '/home/git/linux/tools/lib/bpf'

  Auto-detecting system features:
  ...                        libelf: [ on  ]
  ...             libelf-getphdrnum: [ OFF ]
  ...                   libelf-mmap: [ OFF ]
  ...                           bpf: [ on  ]
  <SNIP>

Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: pi3orama@163.com
Fixes: 58d4f00ff13f ("perf build: Fix feature_check name clash")
Link: http://lkml.kernel.org/n/tip-dzu1c4sruukgfq5d5b1c4r30@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/build/Makefile.feature | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature
index c8fe6d177119..690d5614edd4 100644
--- a/tools/build/Makefile.feature
+++ b/tools/build/Makefile.feature
@@ -140,7 +140,7 @@ ifneq ("$(FEATURE_DUMP)","$(FEATURE_DUMP_FILE)")
   feature_display := 1
 endif
 
-feature_display_check = $(eval $(feature_check_code))
+feature_display_check = $(eval $(feature_check_display_code))
 define feature_display_check_code
   ifneq ($(feature-$(1)), 1)
     feature_display := 1
-- 
2.1.0

[PATCH 4/9] tools lib bpf: Fix up FEATURE_{TESTS,DISPLAY} usage

[Arnaldo Carvalho de Melo]

From: Arnaldo Carvalho de Melo <acme@redhat.com>

When libbpf was introduced it wrongly asked for the "libelf" and "bpf"
feature tests to be performed (via FEATURE_TESTS), while asking that
"libbpf", "libelf-mmap", "libelf-getphdrnum" and "bpf" to have the
result of its respective tests to be displayed (via FEATURE_DISPLAY).

Due to another recently bug fixed in the tools/build/ infrastructure
("tools build: Fixup feature detection display function name") the
results for the entries in the FEATURE_DISPLAY, for this case, were
appearing as all succeeding, when two of them (the ones only on the
DISPLAY) were not even being performed.

Before:

  $ make -C tools/lib/bpf/
  make: Entering directory '/home/git/linux/tools/lib/bpf'
  Auto-detecting system features:
  ...                        libelf: [ on  ]
  ...             libelf-getphdrnum: [ OFF ]
  ...                   libelf-mmap: [ OFF ]
  ...                           bpf: [ on  ]
  <SNIP>

After, with FEATURE_TESTS == FEATURE_DISPLAY:

  Auto-detecting system features:
  ...                        libelf: [ on  ]
  ...             libelf-getphdrnum: [ on  ]
  ...                   libelf-mmap: [ on  ]
  ...                           bpf: [ on  ]
  <SNIP>

I just inverted, so that it tests the four features but displays just
the libelf and mmap ones, to make it more compact. So it becomes:

  $ make -C tools/lib/bpf/
  make: Entering directory '/home/git/linux/tools/lib/bpf'

  Auto-detecting system features:
  ...                        libelf: [ on  ]
  ...                           bpf: [ on  ]

Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: pi3orama@163.com
Fixes: 1b76c13e4b36 ("bpf tools: Introduce 'bpf' library and add bpf feature check")
Link: http://lkml.kernel.org/n/tip-y4bd59e6j9rzzojiyeqrg2jq@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/lib/bpf/Makefile | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile
index f68d23a0b487..604c12081b4b 100644
--- a/tools/lib/bpf/Makefile
+++ b/tools/lib/bpf/Makefile
@@ -64,8 +64,8 @@ srctree := $(patsubst %/,%,$(dir $(srctree)))
 #$(info Determined 'srctree' to be $(srctree))
 endif
 
-FEATURE_DISPLAY = libelf libelf-getphdrnum libelf-mmap bpf
-FEATURE_TESTS = libelf bpf
+FEATURE_TESTS = libelf libelf-getphdrnum libelf-mmap bpf
+FEATURE_DISPLAY = libelf bpf
 
 INCLUDES = -I. -I$(srctree)/tools/include -I$(srctree)/arch/$(ARCH)/include/uapi -I$(srctree)/include/uapi
 FEATURE_CHECK_CFLAGS-bpf = $(INCLUDES)
-- 
2.1.0

[PATCH 5/9] tools build: Allow setting the feature detection user

[Arnaldo Carvalho de Melo]

From: Arnaldo Carvalho de Melo <acme@redhat.com>

We will use the tools/build/ autodetection in the eBPF patchkit
and it is currently sharing the output directory with perf, that
also uses the feature detection logic.

As we keep state in the output directory, so that we can avoid running
all the tests again, we need to have different filenames for the files
used in this state, allow doing that via the FEATURE_USER variable, to
be set alongside the existing FEATURE_{TEST,DISPLAY} variables.

v2: Fix comment describing the FEATURE_DUMP filename to make sure where
    it is created, precisely at $(OUTPUT)FEATURE-DUMP$(FEATURE_USER).
    Pointed out by Jiri.

Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/n/tip-fdbev0vrn3x6idqc3ajbnvcb@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/build/Makefile.feature | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature
index 690d5614edd4..72817e4d5e70 100644
--- a/tools/build/Makefile.feature
+++ b/tools/build/Makefile.feature
@@ -121,8 +121,9 @@ define feature_print_text_code
     MSG = $(shell printf '...%30s: %s' $(1) $(2))
 endef
 
+FEATURE_DUMP_FILENAME = $(OUTPUT)FEATURE-DUMP$(FEATURE_USER)
 FEATURE_DUMP := $(foreach feat,$(FEATURE_DISPLAY),feature-$(feat)($(feature-$(feat))))
-FEATURE_DUMP_FILE := $(shell touch $(OUTPUT)FEATURE-DUMP; cat $(OUTPUT)FEATURE-DUMP)
+FEATURE_DUMP_FILE := $(shell touch $(FEATURE_DUMP_FILENAME); cat $(FEATURE_DUMP_FILENAME))
 
 ifeq ($(dwarf-post-unwind),1)
   FEATURE_DUMP += dwarf-post-unwind($(dwarf-post-unwind-text))
@@ -131,12 +132,12 @@ endif
 # The $(feature_display) controls the default detection message
 # output. It's set if:
 # - detected features differes from stored features from
-#   last build (in FEATURE-DUMP file)
+#   last build (in $(FEATURE_DUMP_FILENAME) file)
 # - one of the $(FEATURE_DISPLAY) is not detected
 # - VF is enabled
 
 ifneq ("$(FEATURE_DUMP)","$(FEATURE_DUMP_FILE)")
-  $(shell echo "$(FEATURE_DUMP)" > $(OUTPUT)FEATURE-DUMP)
+  $(shell echo "$(FEATURE_DUMP)" > $(FEATURE_DUMP_FILENAME))
   feature_display := 1
 endif
 
-- 
2.1.0

[PATCH 6/9] tools lib bpf: Use FEATURE_USER to allow building in the same dir as perf

[Arnaldo Carvalho de Melo]

From: Arnaldo Carvalho de Melo <acme@redhat.com>

When building tools/lib/bpf as part of the tools/perf/ build process,
which will happend when we introduce a patch wiring that up, we end up
stomping on the feature detection caching mechanism, that uses a file in
the output directory (O=) that is shared by libbpf and perf to check if
something changed from one build to another that requires redoing the
feature detection process.

By using the recently introduced FEATURE_USER tools/build/ knob, we can
avoid that:

Before, every make invokation would run the feature detection:

  $ make O=/tmp/build/perf -C tools/perf
  make: Entering directory '/home/git/linux/tools/perf'
  Auto-detecting system features:
  ...                         dwarf: [ on  ]
  ...                         glibc: [ on  ]
  <SNIP>
  ...                     get_cpuid: [ on  ]
  ...                           bpf: [ on  ]

    GEN      perf-archive
    GEN      perf-with-kcore

  Auto-detecting system features:
  ...                        libelf: [ on  ]
  ...                           bpf: [ on  ]
  <SNIP>

After:

  $ make O=/tmp/build/perf -C tools/perf
  make: Entering directory '/home/git/linux/tools/perf'
    BUILD:   Doing 'make -j4' parallel build
  make: Leaving directory '/home/git/linux/tools/perf'
  $

Because we now have two different feature detection state files:

  $ ls -la /tmp/build/perf/FEATURE-DUMP*
  -rw-rw-r--. 1 acme acme 338 Sep 21 17:25 /tmp/build/perf/FEATURE-DUMP
  -rw-rw-r--. 1 acme acme  33 Sep 21 17:25 /tmp/build/perf/FEATURE-DUMP.libbpf
  $

Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: pi3orama@163.com
Fixes: 1b76c13e4b36 ("bpf tools: Introduce 'bpf' library and add bpf feature check")
Link: http://lkml.kernel.org/n/tip-s6ev9wfqy7pvvs58emys2g90@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/lib/bpf/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile
index 604c12081b4b..e630f9fc4fb6 100644
--- a/tools/lib/bpf/Makefile
+++ b/tools/lib/bpf/Makefile
@@ -64,6 +64,7 @@ srctree := $(patsubst %/,%,$(dir $(srctree)))
 #$(info Determined 'srctree' to be $(srctree))
 endif
 
+FEATURE_USER = .libbpf
 FEATURE_TESTS = libelf libelf-getphdrnum libelf-mmap bpf
 FEATURE_DISPLAY = libelf bpf
 
-- 
2.1.0

[PATCH 7/9] perf tools: Add include/err.h into MANIFEST

[Arnaldo Carvalho de Melo]

From: Jiri Olsa <jolsa@kernel.org>

Otherwise the tarpkg is incomplete (tarpkg tests fails).

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wang Nan <wangnan0@huawei.com>
Fixes: 01ca9fd41d6f ("tools: Add err.h with ERR_PTR PTR_ERR interface")
Link: http://lkml.kernel.org/r/1442846143-8556-1-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/MANIFEST | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/MANIFEST b/tools/perf/MANIFEST
index 2a958a80c763..9e6bdf5b2df6 100644
--- a/tools/perf/MANIFEST
+++ b/tools/perf/MANIFEST
@@ -50,6 +50,7 @@ tools/include/linux/poison.h
 tools/include/linux/rbtree.h
 tools/include/linux/rbtree_augmented.h
 tools/include/linux/types.h
+tools/include/linux/err.h
 include/asm-generic/bitops/arch_hweight.h
 include/asm-generic/bitops/const_hweight.h
 include/asm-generic/bitops/fls64.h
-- 
2.1.0

[PATCH 8/9] tools vm: Fix build due to removal of tools/lib/api/fs/debugfs.h

[Arnaldo Carvalho de Melo]

From: Arnaldo Carvalho de Melo <acme@redhat.com>

There were some changes in how this debugfs mounting helper is
implemented/exported and we forgot to check if there were other users
besides perf, fix it.

Need to do a make -C tools/ everytime we do changes to
tools/{lib,include} and other places where we're moving things from
tools/perf/ to be used by other tools/ living code.

Fixed:

  $ make -C tools/vm
  make: Entering directory '/home/git/linux/tools/vm'
  make -C ../lib/api
  make[1]: Entering directory '/home/git/linux/tools/lib/api'
    CC       fd/array.o
    LD       fd/libapi-in.o
    CC       fs/fs.o
    CC       fs/tracing_path.o
    LD       fs/libapi-in.o
    CC       cpu.o
    LD       libapi-in.o
    AR       libapi.a
  make[1]: Leaving directory '/home/git/linux/tools/lib/api'
  gcc -Wall -Wextra -I../lib/ -o page-types page-types.c ../lib/api/libapi.a
  make: Leaving directory '/home/git/linux/tools/vm'
  $

Reported-by: Vinson Lee <vlee@twopensource.com>
Tested-by: Vinson Lee <vlee@twopensource.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Raphael Beamonte <raphael.beamonte@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: David Ahern <dsahern@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Fixes: 60a1133a5b39 ("tools lib api fs: Remove debugfs, tracefs and findfs objects")
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/vm/page-types.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/vm/page-types.c b/tools/vm/page-types.c
index 7f73fa32a590..bcf5ec760eb9 100644
--- a/tools/vm/page-types.c
+++ b/tools/vm/page-types.c
@@ -42,7 +42,7 @@
 #include <sys/mman.h>
 #include "../../include/uapi/linux/magic.h"
 #include "../../include/uapi/linux/kernel-page-flags.h"
-#include <api/fs/debugfs.h>
+#include <api/fs/fs.h>
 
 #ifndef MAX_PATH
 # define MAX_PATH 256
@@ -188,7 +188,7 @@ static int		kpageflags_fd;
 static int		opt_hwpoison;
 static int		opt_unpoison;
 
-static char		*hwpoison_debug_fs;
+static const char	*hwpoison_debug_fs;
 static int		hwpoison_inject_fd;
 static int		hwpoison_forget_fd;
 
@@ -487,7 +487,7 @@ static void prepare_hwpoison_fd(void)
 {
 	char buf[MAX_PATH + 1];
 
-	hwpoison_debug_fs = debugfs_mount(NULL);
+	hwpoison_debug_fs = debugfs__mount();
 	if (!hwpoison_debug_fs) {
 		perror("mount debugfs");
 		exit(EXIT_FAILURE);
-- 
2.1.0

[PATCH 9/9] perf record: Synthesize COMM event for a command line workload

[Arnaldo Carvalho de Melo]

From: Namhyung Kim <namhyung@kernel.org>

When perf creates a new child to profile, the events are enabled on
exec().  And in this case, it doesn't synthesize any event for the
child since they'll be generated during exec().  But there's an window
between the enabling and the event generation.

It used to be overcome since samples are only in kernel (so we always
have the map) and the comm is overridden by a later COMM event.
However it won't work if events are processed and displayed before the
COMM event overrides like in 'perf script'.  This leads to those early
samples (like native_write_msr_safe) not having a comm but pid (like
':15328').

So it needs to synthesize COMM event for the child explicitly before
enabling so that it can have a correct comm.  But at this time, the
comm will be "perf" since it's not exec-ed yet.

Committer note:

Before this patch:

  # perf record usleep 1
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.017 MB perf.data (7 samples) ]
  # perf script --show-task-events
    :4429  4429 27909.079372:          1 cycles:  ffffffff8105f45a native_write_msr_safe (/lib/modules/4.
    :4429  4429 27909.079375:          1 cycles:  ffffffff8105f45a native_write_msr_safe (/lib/modules/4.
    :4429  4429 27909.079376:         10 cycles:  ffffffff8105f45a native_write_msr_safe (/lib/modules/4.
    :4429  4429 27909.079377:        223 cycles:  ffffffff8105f45a native_write_msr_safe (/lib/modules/4.
    :4429  4429 27909.079378:       6571 cycles:  ffffffff8105f45a native_write_msr_safe (/lib/modules/4.
   usleep  4429 27909.079380: PERF_RECORD_COMM exec: usleep:4429/4429
   usleep  4429 27909.079381:     185403 cycles:  ffffffff810a72d3 flush_signal_handlers (/lib/modules/4.
   usleep  4429 27909.079444:    2241110 cycles:      7fc575355be3 _dl_start (/usr/lib64/ld-2.20.so)
   usleep  4429 27909.079875: PERF_RECORD_EXIT(4429:4429):(4429:4429)

After:

  # perf record usleep 1
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.017 MB perf.data (7 samples) ]
  # perf script --show-task
     perf     0     0.000000: PERF_RECORD_COMM: perf:8446/8446
     perf  8446 30154.038944:          1 cycles:  ffffffff8105f45a native_write_msr_safe (/lib/modules/4.
     perf  8446 30154.038948:          1 cycles:  ffffffff8105f45a native_write_msr_safe (/lib/modules/4.
     perf  8446 30154.038949:          9 cycles:  ffffffff8105f45a native_write_msr_safe (/lib/modules/4.
     perf  8446 30154.038950:        230 cycles:  ffffffff8105f45a native_write_msr_safe (/lib/modules/4.
     perf  8446 30154.038951:       6772 cycles:  ffffffff8105f45a native_write_msr_safe (/lib/modules/4.
   usleep  8446 30154.038952: PERF_RECORD_COMM exec: usleep:8446/8446
   usleep  8446 30154.038954:     196923 cycles:  ffffffff81766440 _raw_spin_lock (/lib/modules/4.3.0-rc1
   usleep  8446 30154.039021:    2292130 cycles:      7f609a173dc4 memcpy (/usr/lib64/ld-2.20.so)
   usleep  8446 30154.039349: PERF_RECORD_EXIT(8446:8446):(8446:8446)
  #

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1442881495-2928-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/builtin-record.c | 15 ++++++++++++++-
 tools/perf/util/event.c     |  2 +-
 tools/perf/util/event.h     |  5 +++++
 3 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 142eeb341b29..a01c8ae1ee07 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -636,8 +636,21 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
 	/*
 	 * Let the child rip
 	 */
-	if (forks)
+	if (forks) {
+		union perf_event event;
+		/*
+		 * Some H/W events are generated before COMM event
+		 * which is emitted during exec(), so perf script
+		 * cannot see a correct process name for those events.
+		 * Synthesize COMM event to prevent it.
+		 */
+		perf_event__synthesize_comm(tool, &event,
+					    rec->evlist->workload.pid,
+					    process_synthesized_event,
+					    machine);
+
 		perf_evlist__start_workload(rec->evlist);
+	}
 
 	if (opts->initial_delay) {
 		usleep(opts->initial_delay * 1000);
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 497157affc9c..6214ad47d554 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -167,7 +167,7 @@ static int perf_event__prepare_comm(union perf_event *event, pid_t pid,
 	return 0;
 }
 
-static pid_t perf_event__synthesize_comm(struct perf_tool *tool,
+pid_t perf_event__synthesize_comm(struct perf_tool *tool,
 					 union perf_event *event, pid_t pid,
 					 perf_event__handler_t process,
 					 struct machine *machine)
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index f729df5e25e6..be5cbc7be889 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -478,6 +478,11 @@ int perf_event__synthesize_sample(union perf_event *event, u64 type,
 				  const struct perf_sample *sample,
 				  bool swapped);
 
+pid_t perf_event__synthesize_comm(struct perf_tool *tool,
+				  union perf_event *event, pid_t pid,
+				  perf_event__handler_t process,
+				  struct machine *machine);
+
 int perf_event__synthesize_mmap_events(struct perf_tool *tool,
 				       union perf_event *event,
 				       pid_t pid, pid_t tgid,
-- 
2.1.0

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Ingo Molnar]

* Arnaldo Carvalho de Melo <acme@kernel.org> wrote:

> Hi Ingo,
> 
> 	Please consider pulling,
> 
> - Arnaldo
> 
> The following changes since commit 96f3eda67fcf2598e9d2794398e0e7ab35138ea6:
> 
>   perf/x86/intel: Fix static checker warning in lbr enable (2015-09-18 09:24:57 +0200)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo
> 
> for you to fetch changes up to e803cf97a4f90d31bcc2c9a1ea20fe9cdc12b2f9:
> 
>   perf record: Synthesize COMM event for a command line workload (2015-09-22 22:43:12 -0300)
> 
> ----------------------------------------------------------------
> perf/core improvements and fixes:
> 
> User visible:
> 
> - Fix a segfault in 'perf probe' when removing uprobe events (Masami Hiramatsu)
> 
> - Synthesize COMM event for workloads started from the command line in 'perf
>   record' so that we can have the pid->comm mapping before we get the real
>   PERF_RECORD_COMM switching from perf to the workload (Namhyung Kim)
> 
> - Fix build tools/vm/ due to removal of tools/lib/api/fs/debugfs.h
>   (Arnaldo Carvalho de Melo)
> 
> Developer stuff:
> 
> - Fix the make tarball targets by including the recently added err.h header in
>   the perf MANIFEST file (Jiri Olsa)
> 
> - Don't assume that the event parser returns a non empty evlist (Wang Nan)
> 
> - Add way to disambiguate feature detection state files, needed to use
>   tools/build feature detection for multiple components in a single O= output
>   dir, which will be the case with tools/perf/ and tools/lib/bpf/
>   (Arnaldo Carvalho de Melo)
> 
> - Fixup FEATURE_{TESTS,DISPLAY} inversion in tools/lib/bpf/ (Arnaldo Carvalho de Melo)
> 
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
> 
> ----------------------------------------------------------------
> Arnaldo Carvalho de Melo (5):
>       tools build: Fixup feature detection display function name
>       tools lib bpf: Fix up FEATURE_{TESTS,DISPLAY} usage
>       tools build: Allow setting the feature detection user
>       tools lib bpf: Use FEATURE_USER to allow building in the same dir as perf
>       tools vm: Fix build due to removal of tools/lib/api/fs/debugfs.h
> 
> Jiri Olsa (1):
>       perf tools: Add include/err.h into MANIFEST
> 
> Masami Hiramatsu (1):
>       perf probe: Fix a segfault when removing uprobe events
> 
> Namhyung Kim (1):
>       perf record: Synthesize COMM event for a command line workload
> 
> Wang Nan (1):
>       perf tools: Don't assume that the parser returns non empty evsel list
> 
>  tools/build/Makefile.feature   |  9 +++++----
>  tools/lib/bpf/Makefile         |  5 +++--
>  tools/perf/MANIFEST            |  1 +
>  tools/perf/builtin-probe.c     |  7 +++++--
>  tools/perf/builtin-record.c    | 15 ++++++++++++++-
>  tools/perf/util/event.c        |  2 +-
>  tools/perf/util/event.h        |  5 +++++
>  tools/perf/util/parse-events.c | 16 ++++++++++++++++
>  tools/vm/page-types.c          |  6 +++---
>  9 files changed, 53 insertions(+), 13 deletions(-)

Pulled, thanks a lot Arnaldo!

	Ingo

[GIT PULL 0/9] perf/core improvements and fixes

[Arnaldo Carvalho de Melo]

Hi Ingo,

	Please consider pulling,

- Arnaldo

The following changes since commit e7a7865cc0da306542db0b9205cb0a467f59e33d:

  perf symbols: Fix dso__load_sym to put dso (2015-12-10 16:29:32 -0300)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo

for you to fetch changes up to 93b0ba3c60da89043ce2b9f601cd2b3da408903b:

  perf tools: Clear struct machine during machine__init() (2015-12-11 09:32:41 -0300)

----------------------------------------------------------------
perf/core improvements and fixes:

User visible:

- Fix 'perf top' annotation in --stdio (Namhyung Kim)

- Support hw breakpoint events (mem:0xAddress) in the default output mode in
  'perf script' (Wang Nan)

Infrastructure:

- Do not hold the hists lock while emitting one specific warning (Namhyung Kim)

- Fetch map names from correct strtab, worked so far because llvm/clang
  uses just one string table (Wang Nan)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

----------------------------------------------------------------
Namhyung Kim (4):
      perf top: Do not convert address for perf_top__record_precise_ip()
      perf top: Access hists->lock only if needed
      perf top: Fix annotation on --stdio
      perf top: Cleanup condition in perf_top__record_precise_ip()

Wang Nan (5):
      tools lib bpf: Check return value of strdup when reading map names
      tools lib bpf: Fetch map names from correct strtab
      perf data: Add u32_hex data type
      perf script: Add support for PERF_TYPE_BREAKPOINT
      perf tools: Clear struct machine during machine__init()

 tools/lib/bpf/libbpf.c            | 24 +++++++++++++-----
 tools/perf/builtin-script.c       | 14 +++++++++++
 tools/perf/builtin-top.c          | 52 +++++++++++++++++----------------------
 tools/perf/util/data-convert-bt.c |  2 ++
 tools/perf/util/machine.c         |  1 +
 5 files changed, 57 insertions(+), 36 deletions(-)

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Ingo Molnar]

* Arnaldo Carvalho de Melo <acme@kernel.org> wrote:

> Hi Ingo,
> 
> 	Please consider pulling,
> 
> - Arnaldo
> 
> The following changes since commit e7a7865cc0da306542db0b9205cb0a467f59e33d:
> 
>   perf symbols: Fix dso__load_sym to put dso (2015-12-10 16:29:32 -0300)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo
> 
> for you to fetch changes up to 93b0ba3c60da89043ce2b9f601cd2b3da408903b:
> 
>   perf tools: Clear struct machine during machine__init() (2015-12-11 09:32:41 -0300)
> 
> ----------------------------------------------------------------
> perf/core improvements and fixes:
> 
> User visible:
> 
> - Fix 'perf top' annotation in --stdio (Namhyung Kim)
> 
> - Support hw breakpoint events (mem:0xAddress) in the default output mode in
>   'perf script' (Wang Nan)
> 
> Infrastructure:
> 
> - Do not hold the hists lock while emitting one specific warning (Namhyung Kim)
> 
> - Fetch map names from correct strtab, worked so far because llvm/clang
>   uses just one string table (Wang Nan)
> 
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
> 
> ----------------------------------------------------------------
> Namhyung Kim (4):
>       perf top: Do not convert address for perf_top__record_precise_ip()
>       perf top: Access hists->lock only if needed
>       perf top: Fix annotation on --stdio
>       perf top: Cleanup condition in perf_top__record_precise_ip()
> 
> Wang Nan (5):
>       tools lib bpf: Check return value of strdup when reading map names
>       tools lib bpf: Fetch map names from correct strtab
>       perf data: Add u32_hex data type
>       perf script: Add support for PERF_TYPE_BREAKPOINT
>       perf tools: Clear struct machine during machine__init()
> 
>  tools/lib/bpf/libbpf.c            | 24 +++++++++++++-----
>  tools/perf/builtin-script.c       | 14 +++++++++++
>  tools/perf/builtin-top.c          | 52 +++++++++++++++++----------------------
>  tools/perf/util/data-convert-bt.c |  2 ++
>  tools/perf/util/machine.c         |  1 +
>  5 files changed, 57 insertions(+), 36 deletions(-)

Pulled, thanks a lot Arnaldo!

	Ingo

[GIT PULL 0/9] perf/core improvements and fixes

[Arnaldo Carvalho de Melo]

Hi Ingo,

	Please consider pulling,

- Arnaldo

Test results at the end of this message, as usual.

The following changes since commit 3906a13a6b4e78fbc0def03a808f091f0dff1b44:

  Merge tag 'perf-core-for-mingo-4.12-20170327' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2017-03-28 07:44:43 +0200)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo-4.12-20170331

for you to fetch changes up to fd5cead23f54697310bd565aa2a23ae5128080a0:

  perf trace: Beautify statx syscall 'flag' and 'mask' arguments (2017-03-31 14:42:31 -0300)

----------------------------------------------------------------
perf/core improvements and fixes:

New features:

- Beautify the statx syscall arguments in 'perf trace' (Arnaldo Carvalho de Melo)

    e.g.:

  System wide strace like session:

  # trace -e statx
   16612.967 ( 0.028 ms): statx/4562 statx(dfd: CWD, filename: /tmp/statx, flags: SYMLINK_NOFOLLOW, mask: TYPE|MODE|NLINK|UID|GID|ATIME|MTIME|CTIME|INO|SIZE|BLOCKS|BTIME, buffer: 0x7ffef195d660) = 0
   36050.891 ( 0.007 ms): statx/4576 statx(dfd: CWD, filename: /etc/passwd, flags: SYMLINK_NOFOLLOW|STATX_DONT_SYNC, mask: BTIME, buffer: 0x7ffda9bf50f0) = 0
  ^C#

User visible:

- Handle unpaired raw_syscalls:sys_exit events in 'perf trace', i.e. we
  shouldn't try to calculate duration or print the timestamp for a missing
  matching raw_syscalls:sys_enter (Arnaldo Carvalho de Melo)

- Do not print "cycles: 0" in perf report LBR lines in platforms not
  supporting 'cycles', such as Intel's Broadwell (Jin Yao)

- Handle missing $HOME env var (Jiri Olsa)

- Map 8-bit registers (al, bl, etc), not supported in uprobes_events, to
  the next best thing (ax, bx, etc) supported (Ravi Bangoria)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

----------------------------------------------------------------
Arnaldo Carvalho de Melo (4):
      perf tools: Remove support for command aliases
      perf trace: Handle unpaired raw_syscalls:sys_exit event
      tools include uapi: Grab copies of stat.h and fcntl.h
      perf trace: Beautify statx syscall 'flag' and 'mask' arguments

Colin Ian King (1):
      perf utils: Fix spelling mistake: "Invalud" -> "Invalid"

Jin Yao (1):
      perf report: Drop cycles 0 for LBR print

Jiri Olsa (1):
      perf tools: Do not fail in case of empty HOME env variable

Ravi Bangoria (2):
      perf/sdt/x86: Add renaming logic for (missing) 8 bit registers
      perf/sdt/x86: Move OP parser to tools/perf/arch/x86/

 tools/include/linux/types.h                       |   1 +
 tools/include/uapi/linux/fcntl.h                  |  72 +++++++++
 tools/include/uapi/linux/stat.h                   | 176 ++++++++++++++++++++
 tools/perf/Build                                  |   1 +
 tools/perf/MANIFEST                               |   2 +
 tools/perf/arch/x86/entry/syscalls/syscall_64.tbl |   1 +
 tools/perf/arch/x86/util/perf_regs.c              | 187 ++++++++++++++++++----
 tools/perf/builtin-help.c                         |  13 --
 tools/perf/builtin-trace.c                        |  57 ++++---
 tools/perf/check-headers.sh                       |   2 +
 tools/perf/perf.c                                 |  97 +----------
 tools/perf/trace/beauty/Build                     |   1 +
 tools/perf/trace/beauty/beauty.h                  |  24 +++
 tools/perf/trace/beauty/statx.c                   |  72 +++++++++
 tools/perf/util/Build                             |   1 -
 tools/perf/util/alias.c                           |  78 ---------
 tools/perf/util/cache.h                           |   1 -
 tools/perf/util/callchain.c                       | 111 ++++++++-----
 tools/perf/util/config.c                          |  54 ++++---
 tools/perf/util/help-unknown-cmd.c                |   8 +-
 tools/perf/util/hist.c                            |   2 +-
 tools/perf/util/perf_regs.c                       |   6 +-
 tools/perf/util/perf_regs.h                       |  11 +-
 tools/perf/util/probe-file.c                      | 132 +++++----------
 24 files changed, 707 insertions(+), 403 deletions(-)
 create mode 100644 tools/include/uapi/linux/fcntl.h
 create mode 100644 tools/include/uapi/linux/stat.h
 create mode 100644 tools/perf/trace/beauty/Build
 create mode 100644 tools/perf/trace/beauty/beauty.h
 create mode 100644 tools/perf/trace/beauty/statx.c
 delete mode 100644 tools/perf/util/alias.c

Test results:

The first ones are container (docker) based builds of tools/perf with and
without libelf support, objtool where it is supported and samples/bpf/, ditto.
Where clang is available, it is also used to build perf with/without libelf.

For this specific pull request the samples/bpf/ was disabled, as 'make headers_install'
is failing with the following error, in this case in fedora:rawhide:

    INSTALL usr/include/uapi/ (0 file)
  /git/linux/scripts/Makefile.headersinst:62: *** Missing generated UAPI file ./arch/x86/include/generated/uapi/asm/unistd_32.h.  Stop.
  make[1]: *** [/git/linux/Makefile:1151: headers_install] Error 2
  make[1]: Leaving directory '/tmp/build/linux'
  make: *** [Makefile:152: sub-make] Error 2
  make: Leaving directory '/git/linux'

I'll investigate later, perf and objtool builds just fine, with clang and gcc.

Several are cross builds, the ones with -x-ARCH, and the android one, and those
may not have all the features built, due to lack of multi-arch devel packages,
available and being used so far on just a few, like
debian:experimental-x-{arm64,mipsel}.

The 'perf test' one will perform a variety of tests exercising
tools/perf/util/, tools/lib/{bpf,traceevent,etc}, as well as run perf commands
with a variety of command line event specifications to then intercept the
sys_perf_event syscall to check that the perf_event_attr fields are set up as
expected, among a variety of other unit tests.

Then there is the 'make -C tools/perf build-test' ones, that build tools/perf/
with a variety of feature sets, exercising the build with an incomplete set of
features as well as with a complete one. It is planned to have it run on each
of the containers mentioned above, using some container orchestration
infrastructure. Get in contact if interested in helping having this in place.

  # dm
   1 alpine:3.4: Ok
   2 alpine:3.5: Ok
   3 alpine:edge: Ok
   4 android-ndk:r12b-arm: Ok
   5 archlinux:latest: Ok
   6 centos:5: Ok
   7 centos:6: Ok
   8 centos:7: Ok
   9 debian:7: Ok
  10 debian:8: Ok
  11 debian:9: Ok
  12 debian:experimental: Ok
  13 debian:experimental-x-arm64: Ok
  14 debian:experimental-x-mips: Ok
  15 debian:experimental-x-mips64: Ok
  16 debian:experimental-x-mipsel: Ok
  17 fedora:20: Ok
  18 fedora:21: Ok
  19 fedora:22: Ok
  20 fedora:23: Ok
  21 fedora:24: Ok
  22 fedora:24-x-ARC-uClibc: Ok
  23 fedora:25: Ok
  24 fedora:rawhide: Ok
  25 mageia:5: Ok
  26 opensuse:13.2: Ok
  27 opensuse:42.1: Ok
  28 opensuse:tumbleweed: Ok
  29 ubuntu:12.04.5: Ok
  30 ubuntu:14.04.4: Ok
  31 ubuntu:14.04.4-x-linaro-arm64: Ok
  32 ubuntu:15.10: Ok
  33 ubuntu:16.04: Ok
  34 ubuntu:16.04-x-arm: Ok
  35 ubuntu:16.04-x-arm64: Ok
  36 ubuntu:16.04-x-powerpc: Ok
  37 ubuntu:16.04-x-powerpc64: Ok
  38 ubuntu:16.04-x-s390: Ok
  39 ubuntu:16.10: Ok
  40 ubuntu:17.04: Ok
  #
 
  # uname -a
  Linux jouet 4.11.0-rc2+ #5 SMP Mon Mar 20 18:12:29 -03 2017 x86_64 x86_64 x86_64 GNU/Linux
  # 'perf test tsc' already fixed by peterz in tip
  # perf test
   1: vmlinux symtab matches kallsyms            : Ok
   2: Detect openat syscall event                : Ok
   3: Detect openat syscall event on all cpus    : Ok
   4: Read samples using the mmap interface      : Ok
   5: Parse event definition strings             : Ok
   6: Simple expression parser                   : Ok
   7: PERF_RECORD_* events & perf_sample fields  : Ok
   8: Parse perf pmu format                      : Ok
   9: DSO data read                              : Ok
  10: DSO data cache                             : Ok
  11: DSO data reopen                            : Ok
  12: Roundtrip evsel->name                      : Ok
  13: Parse sched tracepoints fields             : Ok
  14: syscalls:sys_enter_openat event fields     : Ok
  15: Setup struct perf_event_attr               : Ok
  16: Match and link multiple hists              : Ok
  17: 'import perf' in python                    : Ok
  18: Breakpoint overflow signal handler         : Ok
  19: Breakpoint overflow sampling               : Ok
  20: Number of exit events of a simple workload : Ok
  21: Software clock events period values        : Ok
  22: Object code reading                        : Ok
  23: Sample parsing                             : Ok
  24: Use a dummy software event to keep tracking: Ok
  25: Parse with no sample_id_all bit set        : Ok
  26: Filter hist entries                        : Ok
  27: Lookup mmap thread                         : Ok
  28: Share thread mg                            : Ok
  29: Sort output of hist entries                : Ok
  30: Cumulate child hist entries                : Ok
  31: Track with sched_switch                    : Ok
  32: Filter fds with revents mask in a fdarray  : Ok
  33: Add fd to a fdarray, making it autogrow    : Ok
  34: kmod_path__parse                           : Ok
  35: Thread map                                 : Ok
  36: LLVM search and compile                    :
  36.1: Basic BPF llvm compile                    : Ok
  36.2: kbuild searching                          : Ok
  36.3: Compile source for BPF prologue generation: Ok
  36.4: Compile source for BPF relocation         : Ok
  37: Session topology                           : Ok
  38: BPF filter                                 :
  38.1: Basic BPF filtering                      : Ok
  38.2: BPF pinning                              : Ok
  38.3: BPF prologue generation                  : Ok
  38.4: BPF relocation checker                   : Ok
  39: Synthesize thread map                      : Ok
  40: Remove thread map                          : Ok
  41: Synthesize cpu map                         : Ok
  42: Synthesize stat config                     : Ok
  43: Synthesize stat                            : Ok
  44: Synthesize stat round                      : Ok
  45: Synthesize attr update                     : Ok
  46: Event times                                : Ok
  47: Read backward ring buffer                  : Ok
  48: Print cpu map                              : Ok
  49: Probe SDT events                           : Ok
  50: is_printable_array                         : Ok
  51: Print bitmap                               : Ok
  52: perf hooks                                 : Ok
  53: builtin clang support                      : Skip (not compiled in)
  54: unit_number__scnprintf                     : Ok
  55: x86 rdpmc                                  : Ok
  56: Convert perf time to TSC                   : FAILED!
  57: DWARF unwind                               : Ok
  58: x86 instruction decoder - new instructions : Ok
  59: Intel cqm nmi context read                 : Skip

  $ make -C tools/perf build-test
  make_no_libdw_dwarf_unwind_O: make NO_LIBDW_DWARF_UNWIND=1
                make_minimal_O: make NO_LIBPERL=1 NO_LIBPYTHON=1 NO_NEWT=1 NO_GTK2=1 NO_DEMANGLE=1 NO_LIBELF=1 NO_LIBUNWIND=1 NO_BACKTRACE=1 NO_LIBNUMA=1 NO_LIBAUDIT=1 NO_LIBBIONIC=1 NO_LIBDW_DWARF_UNWIND=1 NO_AUXTRACE=1 NO_LIBBPF=1 NO_LIBCRYPTO=1 NO_SDT=1 NO_JVMTI=1
                make_no_gtk2_O: make NO_GTK2=1
                make_no_newt_O: make NO_NEWT=1
                  make_debug_O: make DEBUG=1
           make_no_backtrace_O: make NO_BACKTRACE=1
         make_with_clangllvm_O: make LIBCLANGLLVM=1
                   make_tags_O: make tags
            make_no_demangle_O: make NO_DEMANGLE=1
            make_install_bin_O: make install-bin
           make_no_libpython_O: make NO_LIBPYTHON=1
               make_no_slang_O: make NO_SLANG=1
            make_no_auxtrace_O: make NO_AUXTRACE=1
       make_util_pmu_bison_o_O: make util/pmu-bison.o
                  make_no_ui_O: make NO_NEWT=1 NO_SLANG=1 NO_GTK2=1
             make_no_scripts_O: make NO_LIBPYTHON=1 NO_LIBPERL=1
              make_no_libbpf_O: make NO_LIBBPF=1
        make_with_babeltrace_O: make LIBBABELTRACE=1
             make_util_map_o_O: make util/map.o
                 make_static_O: make LDFLAGS=-static
                   make_help_O: make help
                   make_pure_O: make
                 make_perf_o_O: make perf.o
             make_no_libnuma_O: make NO_LIBNUMA=1
             make_no_libperl_O: make NO_LIBPERL=1
           make_no_libunwind_O: make NO_LIBUNWIND=1
           make_no_libbionic_O: make NO_LIBBIONIC=1
                    make_doc_O: make doc
              make_no_libelf_O: make NO_LIBELF=1
              make_clean_all_O: make clean all
         make_install_prefix_O: make install prefix=/tmp/krava
            make_no_libaudit_O: make NO_LIBAUDIT=1
                make_install_O: make install
   make_install_prefix_slash_O: make install prefix=/tmp/krava/
  OK
  make: Leaving directory '/home/acme/git/linux/tools/perf'
  $

[GIT PULL 0/9] perf/core improvements and fixes

[Arnaldo Carvalho de Melo]

Hi Ingo,

	Please consider pulling,

- Arnaldo

Test results at the end of this message, as usual.

The following changes since commit 3906a13a6b4e78fbc0def03a808f091f0dff1b44:

  Merge tag 'perf-core-for-mingo-4.12-20170327' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2017-03-28 07:44:43 +0200)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo-4.12-20170331

for you to fetch changes up to fd5cead23f54697310bd565aa2a23ae5128080a0:

  perf trace: Beautify statx syscall 'flag' and 'mask' arguments (2017-03-31 14:42:31 -0300)

----------------------------------------------------------------
perf/core improvements and fixes:

New features:

- Beautify the statx syscall arguments in 'perf trace' (Arnaldo Carvalho de Melo)

    e.g.:

  System wide strace like session:

  # trace -e statx
   16612.967 ( 0.028 ms): statx/4562 statx(dfd: CWD, filename: /tmp/statx, flags: SYMLINK_NOFOLLOW, mask: TYPE|MODE|NLINK|UID|GID|ATIME|MTIME|CTIME|INO|SIZE|BLOCKS|BTIME, buffer: 0x7ffef195d660) = 0
   36050.891 ( 0.007 ms): statx/4576 statx(dfd: CWD, filename: /etc/passwd, flags: SYMLINK_NOFOLLOW|STATX_DONT_SYNC, mask: BTIME, buffer: 0x7ffda9bf50f0) = 0
  ^C#

User visible:

- Handle unpaired raw_syscalls:sys_exit events in 'perf trace', i.e. we
  shouldn't try to calculate duration or print the timestamp for a missing
  matching raw_syscalls:sys_enter (Arnaldo Carvalho de Melo)

- Do not print "cycles: 0" in perf report LBR lines in platforms not
  supporting 'cycles', such as Intel's Broadwell (Jin Yao)

- Handle missing $HOME env var (Jiri Olsa)

- Map 8-bit registers (al, bl, etc), not supported in uprobes_events, to
  the next best thing (ax, bx, etc) supported (Ravi Bangoria)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

----------------------------------------------------------------
Arnaldo Carvalho de Melo (4):
      perf tools: Remove support for command aliases
      perf trace: Handle unpaired raw_syscalls:sys_exit event
      tools include uapi: Grab copies of stat.h and fcntl.h
      perf trace: Beautify statx syscall 'flag' and 'mask' arguments

Colin Ian King (1):
      perf utils: Fix spelling mistake: "Invalud" -> "Invalid"

Jin Yao (1):
      perf report: Drop cycles 0 for LBR print

Jiri Olsa (1):
      perf tools: Do not fail in case of empty HOME env variable

Ravi Bangoria (2):
      perf/sdt/x86: Add renaming logic for (missing) 8 bit registers
      perf/sdt/x86: Move OP parser to tools/perf/arch/x86/

 tools/include/linux/types.h                       |   1 +
 tools/include/uapi/linux/fcntl.h                  |  72 +++++++++
 tools/include/uapi/linux/stat.h                   | 176 ++++++++++++++++++++
 tools/perf/Build                                  |   1 +
 tools/perf/MANIFEST                               |   2 +
 tools/perf/arch/x86/entry/syscalls/syscall_64.tbl |   1 +
 tools/perf/arch/x86/util/perf_regs.c              | 187 ++++++++++++++++++----
 tools/perf/builtin-help.c                         |  13 --
 tools/perf/builtin-trace.c                        |  57 ++++---
 tools/perf/check-headers.sh                       |   2 +
 tools/perf/perf.c                                 |  97 +----------
 tools/perf/trace/beauty/Build                     |   1 +
 tools/perf/trace/beauty/beauty.h                  |  24 +++
 tools/perf/trace/beauty/statx.c                   |  72 +++++++++
 tools/perf/util/Build                             |   1 -
 tools/perf/util/alias.c                           |  78 ---------
 tools/perf/util/cache.h                           |   1 -
 tools/perf/util/callchain.c                       | 111 ++++++++-----
 tools/perf/util/config.c                          |  54 ++++---
 tools/perf/util/help-unknown-cmd.c                |   8 +-
 tools/perf/util/hist.c                            |   2 +-
 tools/perf/util/perf_regs.c                       |   6 +-
 tools/perf/util/perf_regs.h                       |  11 +-
 tools/perf/util/probe-file.c                      | 132 +++++----------
 24 files changed, 707 insertions(+), 403 deletions(-)
 create mode 100644 tools/include/uapi/linux/fcntl.h
 create mode 100644 tools/include/uapi/linux/stat.h
 create mode 100644 tools/perf/trace/beauty/Build
 create mode 100644 tools/perf/trace/beauty/beauty.h
 create mode 100644 tools/perf/trace/beauty/statx.c
 delete mode 100644 tools/perf/util/alias.c

Test results:

The first ones are container (docker) based builds of tools/perf with and
without libelf support, objtool where it is supported and samples/bpf/, ditto.
Where clang is available, it is also used to build perf with/without libelf.

For this specific pull request the samples/bpf/ was disabled, as 'make headers_install'
is failing with the following error, in this case in fedora:rawhide:

    INSTALL usr/include/uapi/ (0 file)
  /git/linux/scripts/Makefile.headersinst:62: *** Missing generated UAPI file ./arch/x86/include/generated/uapi/asm/unistd_32.h.  Stop.
  make[1]: *** [/git/linux/Makefile:1151: headers_install] Error 2
  make[1]: Leaving directory '/tmp/build/linux'
  make: *** [Makefile:152: sub-make] Error 2
  make: Leaving directory '/git/linux'

I'll investigate later, perf and objtool builds just fine, with clang and gcc.

Several are cross builds, the ones with -x-ARCH, and the android one, and those
may not have all the features built, due to lack of multi-arch devel packages,
available and being used so far on just a few, like
debian:experimental-x-{arm64,mipsel}.

The 'perf test' one will perform a variety of tests exercising
tools/perf/util/, tools/lib/{bpf,traceevent,etc}, as well as run perf commands
with a variety of command line event specifications to then intercept the
sys_perf_event syscall to check that the perf_event_attr fields are set up as
expected, among a variety of other unit tests.

Then there is the 'make -C tools/perf build-test' ones, that build tools/perf/
with a variety of feature sets, exercising the build with an incomplete set of
features as well as with a complete one. It is planned to have it run on each
of the containers mentioned above, using some container orchestration
infrastructure. Get in contact if interested in helping having this in place.

  # dm
   1 alpine:3.4: Ok
   2 alpine:3.5: Ok
   3 alpine:edge: Ok
   4 android-ndk:r12b-arm: Ok
   5 archlinux:latest: Ok
   6 centos:5: Ok
   7 centos:6: Ok
   8 centos:7: Ok
   9 debian:7: Ok
  10 debian:8: Ok
  11 debian:9: Ok
  12 debian:experimental: Ok
  13 debian:experimental-x-arm64: Ok
  14 debian:experimental-x-mips: Ok
  15 debian:experimental-x-mips64: Ok
  16 debian:experimental-x-mipsel: Ok
  17 fedora:20: Ok
  18 fedora:21: Ok
  19 fedora:22: Ok
  20 fedora:23: Ok
  21 fedora:24: Ok
  22 fedora:24-x-ARC-uClibc: Ok
  23 fedora:25: Ok
  24 fedora:rawhide: Ok
  25 mageia:5: Ok
  26 opensuse:13.2: Ok
  27 opensuse:42.1: Ok
  28 opensuse:tumbleweed: Ok
  29 ubuntu:12.04.5: Ok
  30 ubuntu:14.04.4: Ok
  31 ubuntu:14.04.4-x-linaro-arm64: Ok
  32 ubuntu:15.10: Ok
  33 ubuntu:16.04: Ok
  34 ubuntu:16.04-x-arm: Ok
  35 ubuntu:16.04-x-arm64: Ok
  36 ubuntu:16.04-x-powerpc: Ok
  37 ubuntu:16.04-x-powerpc64: Ok
  38 ubuntu:16.04-x-s390: Ok
  39 ubuntu:16.10: Ok
  40 ubuntu:17.04: Ok
  #
 
  # uname -a
  Linux jouet 4.11.0-rc2+ #5 SMP Mon Mar 20 18:12:29 -03 2017 x86_64 x86_64 x86_64 GNU/Linux
  # 'perf test tsc' already fixed by peterz in tip
  # perf test
   1: vmlinux symtab matches kallsyms            : Ok
   2: Detect openat syscall event                : Ok
   3: Detect openat syscall event on all cpus    : Ok
   4: Read samples using the mmap interface      : Ok
   5: Parse event definition strings             : Ok
   6: Simple expression parser                   : Ok
   7: PERF_RECORD_* events & perf_sample fields  : Ok
   8: Parse perf pmu format                      : Ok
   9: DSO data read                              : Ok
  10: DSO data cache                             : Ok
  11: DSO data reopen                            : Ok
  12: Roundtrip evsel->name                      : Ok
  13: Parse sched tracepoints fields             : Ok
  14: syscalls:sys_enter_openat event fields     : Ok
  15: Setup struct perf_event_attr               : Ok
  16: Match and link multiple hists              : Ok
  17: 'import perf' in python                    : Ok
  18: Breakpoint overflow signal handler         : Ok
  19: Breakpoint overflow sampling               : Ok
  20: Number of exit events of a simple workload : Ok
  21: Software clock events period values        : Ok
  22: Object code reading                        : Ok
  23: Sample parsing                             : Ok
  24: Use a dummy software event to keep tracking: Ok
  25: Parse with no sample_id_all bit set        : Ok
  26: Filter hist entries                        : Ok
  27: Lookup mmap thread                         : Ok
  28: Share thread mg                            : Ok
  29: Sort output of hist entries                : Ok
  30: Cumulate child hist entries                : Ok
  31: Track with sched_switch                    : Ok
  32: Filter fds with revents mask in a fdarray  : Ok
  33: Add fd to a fdarray, making it autogrow    : Ok
  34: kmod_path__parse                           : Ok
  35: Thread map                                 : Ok
  36: LLVM search and compile                    :
  36.1: Basic BPF llvm compile                    : Ok
  36.2: kbuild searching                          : Ok
  36.3: Compile source for BPF prologue generation: Ok
  36.4: Compile source for BPF relocation         : Ok
  37: Session topology                           : Ok
  38: BPF filter                                 :
  38.1: Basic BPF filtering                      : Ok
  38.2: BPF pinning                              : Ok
  38.3: BPF prologue generation                  : Ok
  38.4: BPF relocation checker                   : Ok
  39: Synthesize thread map                      : Ok
  40: Remove thread map                          : Ok
  41: Synthesize cpu map                         : Ok
  42: Synthesize stat config                     : Ok
  43: Synthesize stat                            : Ok
  44: Synthesize stat round                      : Ok
  45: Synthesize attr update                     : Ok
  46: Event times                                : Ok
  47: Read backward ring buffer                  : Ok
  48: Print cpu map                              : Ok
  49: Probe SDT events                           : Ok
  50: is_printable_array                         : Ok
  51: Print bitmap                               : Ok
  52: perf hooks                                 : Ok
  53: builtin clang support                      : Skip (not compiled in)
  54: unit_number__scnprintf                     : Ok
  55: x86 rdpmc                                  : Ok
  56: Convert perf time to TSC                   : FAILED!
  57: DWARF unwind                               : Ok
  58: x86 instruction decoder - new instructions : Ok
  59: Intel cqm nmi context read                 : Skip

  $ make -C tools/perf build-test
  make_no_libdw_dwarf_unwind_O: make NO_LIBDW_DWARF_UNWIND=1
                make_minimal_O: make NO_LIBPERL=1 NO_LIBPYTHON=1 NO_NEWT=1 NO_GTK2=1 NO_DEMANGLE=1 NO_LIBELF=1 NO_LIBUNWIND=1 NO_BACKTRACE=1 NO_LIBNUMA=1 NO_LIBAUDIT=1 NO_LIBBIONIC=1 NO_LIBDW_DWARF_UNWIND=1 NO_AUXTRACE=1 NO_LIBBPF=1 NO_LIBCRYPTO=1 NO_SDT=1 NO_JVMTI=1
                make_no_gtk2_O: make NO_GTK2=1
                make_no_newt_O: make NO_NEWT=1
                  make_debug_O: make DEBUG=1
           make_no_backtrace_O: make NO_BACKTRACE=1
         make_with_clangllvm_O: make LIBCLANGLLVM=1
                   make_tags_O: make tags
            make_no_demangle_O: make NO_DEMANGLE=1
            make_install_bin_O: make install-bin
           make_no_libpython_O: make NO_LIBPYTHON=1
               make_no_slang_O: make NO_SLANG=1
            make_no_auxtrace_O: make NO_AUXTRACE=1
       make_util_pmu_bison_o_O: make util/pmu-bison.o
                  make_no_ui_O: make NO_NEWT=1 NO_SLANG=1 NO_GTK2=1
             make_no_scripts_O: make NO_LIBPYTHON=1 NO_LIBPERL=1
              make_no_libbpf_O: make NO_LIBBPF=1
        make_with_babeltrace_O: make LIBBABELTRACE=1
             make_util_map_o_O: make util/map.o
                 make_static_O: make LDFLAGS=-static
                   make_help_O: make help
                   make_pure_O: make
                 make_perf_o_O: make perf.o
             make_no_libnuma_O: make NO_LIBNUMA=1
             make_no_libperl_O: make NO_LIBPERL=1
           make_no_libunwind_O: make NO_LIBUNWIND=1
           make_no_libbionic_O: make NO_LIBBIONIC=1
                    make_doc_O: make doc
              make_no_libelf_O: make NO_LIBELF=1
              make_clean_all_O: make clean all
         make_install_prefix_O: make install prefix=/tmp/krava
            make_no_libaudit_O: make NO_LIBAUDIT=1
                make_install_O: make install
   make_install_prefix_slash_O: make install prefix=/tmp/krava/
  OK
  make: Leaving directory '/home/acme/git/linux/tools/perf'
  $

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Ingo Molnar]

* Arnaldo Carvalho de Melo <acme@kernel.org> wrote:

> Hi Ingo,
> 
> 	Please consider pulling,
> 
> - Arnaldo
> 
> Test results at the end of this message, as usual.
> 
> The following changes since commit 3906a13a6b4e78fbc0def03a808f091f0dff1b44:
> 
>   Merge tag 'perf-core-for-mingo-4.12-20170327' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2017-03-28 07:44:43 +0200)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo-4.12-20170331
> 
> for you to fetch changes up to fd5cead23f54697310bd565aa2a23ae5128080a0:
> 
>   perf trace: Beautify statx syscall 'flag' and 'mask' arguments (2017-03-31 14:42:31 -0300)
> 
> ----------------------------------------------------------------
> perf/core improvements and fixes:
> 
> New features:
> 
> - Beautify the statx syscall arguments in 'perf trace' (Arnaldo Carvalho de Melo)
> 
>     e.g.:
> 
>   System wide strace like session:
> 
>   # trace -e statx
>    16612.967 ( 0.028 ms): statx/4562 statx(dfd: CWD, filename: /tmp/statx, flags: SYMLINK_NOFOLLOW, mask: TYPE|MODE|NLINK|UID|GID|ATIME|MTIME|CTIME|INO|SIZE|BLOCKS|BTIME, buffer: 0x7ffef195d660) = 0
>    36050.891 ( 0.007 ms): statx/4576 statx(dfd: CWD, filename: /etc/passwd, flags: SYMLINK_NOFOLLOW|STATX_DONT_SYNC, mask: BTIME, buffer: 0x7ffda9bf50f0) = 0
>   ^C#
> 
> User visible:
> 
> - Handle unpaired raw_syscalls:sys_exit events in 'perf trace', i.e. we
>   shouldn't try to calculate duration or print the timestamp for a missing
>   matching raw_syscalls:sys_enter (Arnaldo Carvalho de Melo)
> 
> - Do not print "cycles: 0" in perf report LBR lines in platforms not
>   supporting 'cycles', such as Intel's Broadwell (Jin Yao)
> 
> - Handle missing $HOME env var (Jiri Olsa)
> 
> - Map 8-bit registers (al, bl, etc), not supported in uprobes_events, to
>   the next best thing (ax, bx, etc) supported (Ravi Bangoria)
> 
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
> 
> ----------------------------------------------------------------
> Arnaldo Carvalho de Melo (4):
>       perf tools: Remove support for command aliases
>       perf trace: Handle unpaired raw_syscalls:sys_exit event
>       tools include uapi: Grab copies of stat.h and fcntl.h
>       perf trace: Beautify statx syscall 'flag' and 'mask' arguments
> 
> Colin Ian King (1):
>       perf utils: Fix spelling mistake: "Invalud" -> "Invalid"
> 
> Jin Yao (1):
>       perf report: Drop cycles 0 for LBR print
> 
> Jiri Olsa (1):
>       perf tools: Do not fail in case of empty HOME env variable
> 
> Ravi Bangoria (2):
>       perf/sdt/x86: Add renaming logic for (missing) 8 bit registers
>       perf/sdt/x86: Move OP parser to tools/perf/arch/x86/
> 
>  tools/include/linux/types.h                       |   1 +
>  tools/include/uapi/linux/fcntl.h                  |  72 +++++++++
>  tools/include/uapi/linux/stat.h                   | 176 ++++++++++++++++++++
>  tools/perf/Build                                  |   1 +
>  tools/perf/MANIFEST                               |   2 +
>  tools/perf/arch/x86/entry/syscalls/syscall_64.tbl |   1 +
>  tools/perf/arch/x86/util/perf_regs.c              | 187 ++++++++++++++++++----
>  tools/perf/builtin-help.c                         |  13 --
>  tools/perf/builtin-trace.c                        |  57 ++++---
>  tools/perf/check-headers.sh                       |   2 +
>  tools/perf/perf.c                                 |  97 +----------
>  tools/perf/trace/beauty/Build                     |   1 +
>  tools/perf/trace/beauty/beauty.h                  |  24 +++
>  tools/perf/trace/beauty/statx.c                   |  72 +++++++++
>  tools/perf/util/Build                             |   1 -
>  tools/perf/util/alias.c                           |  78 ---------
>  tools/perf/util/cache.h                           |   1 -
>  tools/perf/util/callchain.c                       | 111 ++++++++-----
>  tools/perf/util/config.c                          |  54 ++++---
>  tools/perf/util/help-unknown-cmd.c                |   8 +-
>  tools/perf/util/hist.c                            |   2 +-
>  tools/perf/util/perf_regs.c                       |   6 +-
>  tools/perf/util/perf_regs.h                       |  11 +-
>  tools/perf/util/probe-file.c                      | 132 +++++----------
>  24 files changed, 707 insertions(+), 403 deletions(-)
>  create mode 100644 tools/include/uapi/linux/fcntl.h
>  create mode 100644 tools/include/uapi/linux/stat.h
>  create mode 100644 tools/perf/trace/beauty/Build
>  create mode 100644 tools/perf/trace/beauty/beauty.h
>  create mode 100644 tools/perf/trace/beauty/statx.c
>  delete mode 100644 tools/perf/util/alias.c

Pulled, thanks a lot Arnaldo!

	Ingo

Re: [GIT PULL 0/9] perf/core improvements and fixes

[Ingo Molnar]

* Arnaldo Carvalho de Melo <acme@kernel.org> wrote:

> Hi Ingo,
> 
> 	Please consider pulling,
> 
> - Arnaldo
> 
> Test results at the end of this message, as usual.
> 
> The following changes since commit 3906a13a6b4e78fbc0def03a808f091f0dff1b44:
> 
>   Merge tag 'perf-core-for-mingo-4.12-20170327' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2017-03-28 07:44:43 +0200)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo-4.12-20170331
> 
> for you to fetch changes up to fd5cead23f54697310bd565aa2a23ae5128080a0:
> 
>   perf trace: Beautify statx syscall 'flag' and 'mask' arguments (2017-03-31 14:42:31 -0300)
> 
> ----------------------------------------------------------------
> perf/core improvements and fixes:
> 
> New features:
> 
> - Beautify the statx syscall arguments in 'perf trace' (Arnaldo Carvalho de Melo)
> 
>     e.g.:
> 
>   System wide strace like session:
> 
>   # trace -e statx
>    16612.967 ( 0.028 ms): statx/4562 statx(dfd: CWD, filename: /tmp/statx, flags: SYMLINK_NOFOLLOW, mask: TYPE|MODE|NLINK|UID|GID|ATIME|MTIME|CTIME|INO|SIZE|BLOCKS|BTIME, buffer: 0x7ffef195d660) = 0
>    36050.891 ( 0.007 ms): statx/4576 statx(dfd: CWD, filename: /etc/passwd, flags: SYMLINK_NOFOLLOW|STATX_DONT_SYNC, mask: BTIME, buffer: 0x7ffda9bf50f0) = 0
>   ^C#
> 
> User visible:
> 
> - Handle unpaired raw_syscalls:sys_exit events in 'perf trace', i.e. we
>   shouldn't try to calculate duration or print the timestamp for a missing
>   matching raw_syscalls:sys_enter (Arnaldo Carvalho de Melo)
> 
> - Do not print "cycles: 0" in perf report LBR lines in platforms not
>   supporting 'cycles', such as Intel's Broadwell (Jin Yao)
> 
> - Handle missing $HOME env var (Jiri Olsa)
> 
> - Map 8-bit registers (al, bl, etc), not supported in uprobes_events, to
>   the next best thing (ax, bx, etc) supported (Ravi Bangoria)
> 
> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
> 
> ----------------------------------------------------------------
> Arnaldo Carvalho de Melo (4):
>       perf tools: Remove support for command aliases
>       perf trace: Handle unpaired raw_syscalls:sys_exit event
>       tools include uapi: Grab copies of stat.h and fcntl.h
>       perf trace: Beautify statx syscall 'flag' and 'mask' arguments
> 
> Colin Ian King (1):
>       perf utils: Fix spelling mistake: "Invalud" -> "Invalid"
> 
> Jin Yao (1):
>       perf report: Drop cycles 0 for LBR print
> 
> Jiri Olsa (1):
>       perf tools: Do not fail in case of empty HOME env variable
> 
> Ravi Bangoria (2):
>       perf/sdt/x86: Add renaming logic for (missing) 8 bit registers
>       perf/sdt/x86: Move OP parser to tools/perf/arch/x86/
> 
>  tools/include/linux/types.h                       |   1 +
>  tools/include/uapi/linux/fcntl.h                  |  72 +++++++++
>  tools/include/uapi/linux/stat.h                   | 176 ++++++++++++++++++++
>  tools/perf/Build                                  |   1 +
>  tools/perf/MANIFEST                               |   2 +
>  tools/perf/arch/x86/entry/syscalls/syscall_64.tbl |   1 +
>  tools/perf/arch/x86/util/perf_regs.c              | 187 ++++++++++++++++++----
>  tools/perf/builtin-help.c                         |  13 --
>  tools/perf/builtin-trace.c                        |  57 ++++---
>  tools/perf/check-headers.sh                       |   2 +
>  tools/perf/perf.c                                 |  97 +----------
>  tools/perf/trace/beauty/Build                     |   1 +
>  tools/perf/trace/beauty/beauty.h                  |  24 +++
>  tools/perf/trace/beauty/statx.c                   |  72 +++++++++
>  tools/perf/util/Build                             |   1 -
>  tools/perf/util/alias.c                           |  78 ---------
>  tools/perf/util/cache.h                           |   1 -
>  tools/perf/util/callchain.c                       | 111 ++++++++-----
>  tools/perf/util/config.c                          |  54 ++++---
>  tools/perf/util/help-unknown-cmd.c                |   8 +-
>  tools/perf/util/hist.c                            |   2 +-
>  tools/perf/util/perf_regs.c                       |   6 +-
>  tools/perf/util/perf_regs.h                       |  11 +-
>  tools/perf/util/probe-file.c                      | 132 +++++----------
>  24 files changed, 707 insertions(+), 403 deletions(-)
>  create mode 100644 tools/include/uapi/linux/fcntl.h
>  create mode 100644 tools/include/uapi/linux/stat.h
>  create mode 100644 tools/perf/trace/beauty/Build
>  create mode 100644 tools/perf/trace/beauty/beauty.h
>  create mode 100644 tools/perf/trace/beauty/statx.c
>  delete mode 100644 tools/perf/util/alias.c

Pulled, thanks a lot Arnaldo!

	Ingo