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  1. 06 10月, 2012 2 次提交
    • J
      perf diff: Add option to sort entries based on diff computation · 96c47f19
      由 Jiri Olsa 提交于 
      Adding support to sort hist entries based on the outcome of selected
computation. It's now possible to specify '+' as a first character of
'-c' option value to make such sort.

Example:

  $ perf diff -c ratio -b
  # Event 'cache-misses'
  #
  #   Baseline           Ratio      Shared Object                            Symbol
  #   ........  ..............  .................  ................................
  #
        19.64%            0.69  [kernel.kallsyms]  [k] clear_page
         0.30%            0.17  [kernel.kallsyms]  [k] mm_alloc
         0.04%            0.20  [kernel.kallsyms]  [k] kmem_cache_alloc

  $ perf diff -c +ratio -b
  # Event 'cache-misses'
  #
  #   Baseline           Ratio      Shared Object                            Symbol
  #   ........  ..............  .................  ................................
  #
        19.64%            0.69  [kernel.kallsyms]  [k] clear_page
         0.04%            0.20  [kernel.kallsyms]  [k] kmem_cache_alloc
         0.30%            0.17  [kernel.kallsyms]  [k] mm_alloc
Signed-off-by: NJiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1349448287-18919-4-git-send-email-jolsa@redhat.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      96c47f19
    • J
      perf diff: Add ratio computation way to compare hist entries · 7aaf6b35
      由 Jiri Olsa 提交于 
      Adding -c option to select computation method with the current 'Delta'
computation as default. Current possible values are of this option are:
'delta' and 'ratio'.

Adding 'ratio' as new computation way to compare hist entries.  If
specified the 'Ratio' column is displayed with value 'r' computed as:

  r = A->period / B->period

with:
  - A/B being matching hist entry from first/second file specified
    (or perf.data/perf.data.old) respectively.
  - period being the hist entry period value
Signed-off-by: NJiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1349448287-18919-3-git-send-email-jolsa@redhat.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      7aaf6b35
  3. 05 10月, 2012 5 次提交
  5. 03 10月, 2012 2 次提交
  7. 11 9月, 2012 1 次提交
    • I
      perf tools: Use __maybe_used for unused variables · 1d037ca1
      由 Irina Tirdea 提交于 
      perf defines both __used and __unused variables to use for marking
unused variables. The variable __used is defined to
__attribute__((__unused__)), which contradicts the kernel definition to
__attribute__((__used__)) for new gcc versions. On Android, __used is
also defined in system headers and this leads to warnings like: warning:
'__used__' attribute ignored

__unused is not defined in the kernel and is not a standard definition.
If __unused is included everywhere instead of __used, this leads to
conflicts with glibc headers, since glibc has a variables with this name
in its headers.

The best approach is to use __maybe_unused, the definition used in the
kernel for __attribute__((unused)). In this way there is only one
definition in perf sources (instead of 2 definitions that point to the
same thing: __used and __unused) and it works on both Linux and Android.
This patch simply replaces all instances of __used and __unused with
__maybe_unused.
Signed-off-by: NIrina Tirdea <irina.tirdea@intel.com>
Acked-by: NPekka Enberg <penberg@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1347315303-29906-7-git-send-email-irina.tirdea@intel.com
[ committer note: fixed up conflict with a116e05d in builtin-sched.c ]
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      1d037ca1
  9. 09 9月, 2012 1 次提交
  11. 20 8月, 2012 2 次提交
  13. 20 6月, 2012 1 次提交
    • A
      perf tools: Add sort by src line/number · 409a8be6
      由 Arnaldo Carvalho de Melo 提交于 
      Using addr2line for now, requires debuginfo, needs more work to support
detached debuginfo, aka foo-debuginfo packages.

Example:

	[root@sandy ~]# perf record -a sleep 3
	[ perf record: Woken up 1 times to write data ]
	[ perf record: Captured and wrote 0.555 MB perf.data (~24236 samples) ]
	[root@sandy ~]# perf report -s dso,srcline 2>&1 | grep -v ^# | head -5
	    22.41%  [kernel.kallsyms]  /home/git/linux/drivers/idle/intel_idle.c:280
	     4.79%  [kernel.kallsyms]  /home/git/linux/drivers/cpuidle/cpuidle.c:148
	     4.78%  [kernel.kallsyms]  /home/git/linux/arch/x86/include/asm/atomic64_64.h:121
	     4.49%  [kernel.kallsyms]  /home/git/linux/kernel/sched/core.c:1690
	     4.30%  [kernel.kallsyms]  /home/git/linux/include/linux/seqlock.h:90
	[root@sandy ~]#

[root@sandy ~]# perf top -U -s dso,symbol,srcline
Samples: 1K of event 'cycles', Event count (approx.): 589617389
 18.66%  [kernel]  [k] copy_user_generic_unrolled   /home/git/linux/arch/x86/lib/copy_user_64.S:143
  7.83%  [kernel]  [k] clear_page                   /home/git/linux/arch/x86/lib/clear_page_64.S:39
  6.59%  [kernel]  [k] clear_page                   /home/git/linux/arch/x86/lib/clear_page_64.S:38
  3.66%  [kernel]  [k] page_fault                   /home/git/linux/arch/x86/kernel/entry_64.S:1379
  3.25%  [kernel]  [k] clear_page                   /home/git/linux/arch/x86/lib/clear_page_64.S:40
  3.12%  [kernel]  [k] clear_page                   /home/git/linux/arch/x86/lib/clear_page_64.S:37
  2.74%  [kernel]  [k] clear_page                   /home/git/linux/arch/x86/lib/clear_page_64.S:36
  2.39%  [kernel]  [k] clear_page                   /home/git/linux/arch/x86/lib/clear_page_64.S:43
  2.12%  [kernel]  [k] ioread32                     /home/git/linux/lib/iomap.c:90
  1.51%  [kernel]  [k] copy_user_generic_unrolled   /home/git/linux/arch/x86/lib/copy_user_64.S:144
  1.19%  [kernel]  [k] copy_user_generic_unrolled   /home/git/linux/arch/x86/lib/copy_user_64.S:154
Suggested-by: NAndi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-pdmqbng9twz06jzkbgtuwbp8@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      409a8be6
  15. 31 5月, 2012 1 次提交
  17. 12 4月, 2012 1 次提交
  19. 20 3月, 2012 1 次提交
    • P
      perf report: Add a simple GTK2-based 'perf report' browser · c31a9457
      由 Pekka Enberg 提交于 
      This patch adds a simple GTK2-based browser to 'perf report' that's
based on the TTY-based browser in builtin-report.c.

To launch "perf report" using the new GTK interface just type:

  $ perf report --gtk

The interface is somewhat limited in features at the moment:

  - No callgraph support

  - No KVM guest profiling support

  - No color coding for percentages

  - No sorting from the UI

  - ..and many, many more!

That said, I think this patch a reasonable start to build future features on.
Signed-off-by: NPekka Enberg <penberg@kernel.org>
Cc: Colin Walters <walters@verbum.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1202231952410.6689@tux.localdomain
[ committer note: Added #pragma to make gtk no strict prototype problem go
  away as suggested by Colin Walters modulo avoiding push/pop ]
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      c31a9457
  21. 17 3月, 2012 1 次提交
  23. 09 3月, 2012 1 次提交
  25. 14 2月, 2012 1 次提交
  27. 25 1月, 2012 1 次提交
  29. 07 1月, 2012 1 次提交
  31. 28 11月, 2011 1 次提交
  33. 16 11月, 2011 1 次提交
    • A
      perf python: Fix undefined symbol problem · 0e2a5f10
      由 Arnaldo Carvalho de Melo 提交于 
      Recently we made perf_evsel__init call hists__init, which broke the perf
python binding:

[root@emilia linux]# ./tools/perf/python/twatch.py
Traceback (most recent call last):
  File "./tools/perf/python/twatch.py", line 16, in <module>
    import perf
ImportError: /home/acme/git/build/perf/python/perf.so: undefined symbol: hists__init

Fix it by moving the hists__init function to its only caller, evsel.c.

This way we avoid dragging in other parts of tools/perf/util/ to the
perf python binding.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-5nffmdt5mu6ozxgj54oi4qon@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      0e2a5f10
  35. 02 11月, 2011 1 次提交
  37. 21 10月, 2011 1 次提交
  39. 19 10月, 2011 2 次提交
  41. 17 10月, 2011 1 次提交
  43. 13 10月, 2011 2 次提交
  45. 08 10月, 2011 2 次提交
    • A
      perf annotate browser: Allow navigation to called functions · 34958544
      由 Arnaldo Carvalho de Melo 提交于 
      I.e. when in the annotate TUI window, if Enter is pressed over an
assembly line with a 'callq' it will try to open another TUI window with
that symbol.

This is just a proof of concept and works only on x86_64, more work is
needed to support kernel modules, userland, other arches, etc, but
should already be useful as-is.
Suggested-by: NIngo Molnar <mingo@elte.hu>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-opyvskw5na3qdmkv8vxi3zbr@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      34958544
    • A
      perf top: Reuse the 'report' hist_entry/hists classes · ab81f3fd
      由 Arnaldo Carvalho de Melo 提交于 
      This actually fixes several problems we had in the old 'perf top':

1. Unresolved symbols not show, limitation that came from the old
   "KernelTop" codebase, to solve it we would need to do changes
   that would make sym_entry have most of the hist_entry fields.
2. It was using the number of samples, not the sum of sample->period.

And brings the --sort code that allows us to have all the views in
'perf report', for instance:

[root@emilia ~]# perf top --sort dso
PerfTop: 5903 irqs/sec kernel:77.5% exact: 0.0% [1000Hz cycles], (all, 8 CPUs)
------------------------------------------------------------------------------

    31.59%  libcrypto.so.1.0.0
    21.55%  [kernel]
    18.57%  libpython2.6.so.1.0
     7.04%  libc-2.12.so
     6.99%  _backend_agg.so
     4.72%  sshd
     1.48%  multiarray.so
     1.39%  libfreetype.so.6.3.22
     1.37%  perf
     0.71%  libgobject-2.0.so.0.2200.5
     0.53%  [tg3]
     0.48%  libglib-2.0.so.0.2200.5
     0.44%  libstdc++.so.6.0.13
     0.40%  libcairo.so.2.10800.8
     0.38%  libm-2.12.so
     0.34%  umath.so
     0.30%  libgdk-x11-2.0.so.0.1800.9
     0.22%  libpthread-2.12.so
     0.20%  libgtk-x11-2.0.so.0.1800.9
     0.20%  librt-2.12.so
     0.15%  _path.so
     0.13%  libpango-1.0.so.0.2800.1
     0.11%  libatlas.so.3.0
     0.09%  ft2font.so
     0.09%  libpangoft2-1.0.so.0.2800.1
     0.08%  libX11.so.6.3.0
     0.07%  [vdso]
     0.06%  cyclictest
^C

All the filter lists can be used as well: --dsos, --comms, --symbols,
etc.

The 'perf report' TUI is also reused, being possible to apply all the
zoom operations, do annotation, etc.

This change will allow multiple simplifications in the symbol system as
well, that will be detailed in upcoming changesets.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-xzaaldxq7zhqrrxdxjifk1mh@git.kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      ab81f3fd
  47. 07 10月, 2011 3 次提交
  49. 24 3月, 2011 1 次提交
    • A
      perf session: Pass evsel in event_ops->sample() · 9e69c210
      由 Arnaldo Carvalho de Melo 提交于 
      Resolving the sample->id to an evsel since the most advanced tools,
report and annotate, and the others will too when they evolve to
properly support multi-event perf.data files.

Good also because it does an extra validation, checking that the ID is
valid when present. When that is not the case, the overhead is just a
branch + function call (perf_evlist__id2evsel).

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      9e69c210
  51. 07 3月, 2011 2 次提交
    • A
      perf report tui: Improve multi event session support · 7f0030b2
      由 Arnaldo Carvalho de Melo 提交于 
      When multiple events were used in 'perf record', allow the user to
choose which one is wanted before showing the per event histograms.

Annotations will be performed on the chosen event.

Allow going back and forth from event to event quickly using just the
arrow keys and enter.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
Cc: William Cohen <wcohen@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      7f0030b2
    • A
      perf tools: Improve support for sessions with multiple events · e248de33
      由 Arnaldo Carvalho de Melo 提交于 
      By creating an perf_evlist out of the attributes in the perf.data file
header, so that we can use evlists and evsels when reading recorded
sessions in addition to when we record sessions.

More work is needed to allow tools to allow the user to select which
events are wanted when browsing sessions, be it just one or a subset of
them, aggregated or showed at the same time but with different
indications on the UI to allow seeing workloads thru different views at
the same time.

But the overall goal/trend is to more uniformly use evsels and evlists.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      e248de33
  53. 09 2月, 2011 1 次提交
    • A
      perf annotate: Move locking to struct annotation · ce6f4fab
      由 Arnaldo Carvalho de Melo 提交于 
      Since we'll need it when implementing the live annotate TUI browser.

This also simplifies things a bit by having the list head for the source
code to be in the dynamicly allocated part of struct annotation, that
way we don't have to pass it around, it can be found from the struct
symbol that is passed everywhere.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      ce6f4fab