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  1. 25 5月, 2021 1 次提交
    • A
      perf script: Find script file relative to exec path · 6ea4b5db
      由 Adrian Hunter 提交于 
      Allow perf script to find a script in the exec path.

Example:

Before:

 $ perf record -a -e intel_pt/branch=0/ sleep 0.1
 [ perf record: Woken up 1 times to write data ]
 [ perf record: Captured and wrote 0.954 MB perf.data ]
 $ perf script intel-pt-events.py 2>&1 | head -3
   Error: Couldn't find script `intel-pt-events.py'
   See perf script -l for available scripts.
 $ perf script -s intel-pt-events.py 2>&1 | head -3
 Can't open python script "intel-pt-events.py": No such file or directory
 $ perf script ~/libexec/perf-core/scripts/python/intel-pt-events.py 2>&1 | head -3
   Error: Couldn't find script `/home/ahunter/libexec/perf-core/scripts/python/intel-pt-events.py'
   See perf script -l for available scripts.
 $

After:

 $ perf script intel-pt-events.py 2>&1 | head -3
 Intel PT Power Events and PTWRITE
            perf  8123/8123  [000]       551.230753986     cbr:  42  freq: 4219 MHz  (156%)                0 [unknown] ([unknown])
            perf  8123/8123  [001]       551.230808216     cbr:  42  freq: 4219 MHz  (156%)                0 [unknown] ([unknown])
 $ perf script -s intel-pt-events.py 2>&1 | head -3
 Intel PT Power Events and PTWRITE
            perf  8123/8123  [000]       551.230753986     cbr:  42  freq: 4219 MHz  (156%)                0 [unknown] ([unknown])
            perf  8123/8123  [001]       551.230808216     cbr:  42  freq: 4219 MHz  (156%)                0 [unknown] ([unknown])
 $ perf script ~/libexec/perf-core/scripts/python/intel-pt-events.py 2>&1 | head -3
 Intel PT Power Events and PTWRITE
            perf  8123/8123  [000]       551.230753986     cbr:  42  freq: 4219 MHz  (156%)                0 [unknown] ([unknown])
            perf  8123/8123  [001]       551.230808216     cbr:  42  freq: 4219 MHz  (156%)                0 [unknown] ([unknown])
 $
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Acked-by: NJiri Olsa <jolsa@redhat.com>
Link: http://lore.kernel.org/lkml/20210524065718.11421-1-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      6ea4b5db
  3. 24 3月, 2021 1 次提交
  5. 03 11月, 2020 1 次提交
    • A
      perf scripting python: Avoid declaring function pointers with a visibility attribute · d0e7b0c7
      由 Arnaldo Carvalho de Melo 提交于 
      To avoid this:

  util/scripting-engines/trace-event-python.c: In function 'python_start_script':
  util/scripting-engines/trace-event-python.c:1595:2: error: 'visibility' attribute ignored [-Werror=attributes]
   1595 |  PyMODINIT_FUNC (*initfunc)(void);
        |  ^~~~~~~~~~~~~~

That started breaking when building with PYTHON=python3 and these gcc
versions (I haven't checked with the clang ones, maybe it breaks there
as well):

  # export PERF_TARBALL=http://192.168.86.5/perf/perf-5.9.0.tar.xz
  # dm  fedora:33 fedora:rawhide
     1   107.80 fedora:33         : Ok   gcc (GCC) 10.2.1 20201005 (Red Hat 10.2.1-5), clang version 11.0.0 (Fedora 11.0.0-1.fc33)
     2    92.47 fedora:rawhide    : Ok   gcc (GCC) 10.2.1 20201016 (Red Hat 10.2.1-6), clang version 11.0.0 (Fedora 11.0.0-1.fc34)
  #

Avoid that by ditching that 'initfunc' function pointer with its:

    #define Py_EXPORTED_SYMBOL _attribute_ ((visibility ("default")))
    #define PyMODINIT_FUNC Py_EXPORTED_SYMBOL PyObject*

And just call PyImport_AppendInittab() at the end of the ifdef python3
block with the functions that were being attributed to that initfunc.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      d0e7b0c7
  7. 14 10月, 2020 2 次提交
  9. 06 5月, 2020 1 次提交
  11. 03 4月, 2020 1 次提交
  13. 10 3月, 2020 1 次提交
    • K
      perf tools: Add hw_idx in struct branch_stack · 42bbabed
      由 Kan Liang 提交于 
      The low level index of raw branch records for the most recent branch can
be recorded in a sample with PERF_SAMPLE_BRANCH_HW_INDEX
branch_sample_type. Extend struct branch_stack to support it.

However, if the PERF_SAMPLE_BRANCH_HW_INDEX is not applied, only nr and
entries[] will be output by kernel. The pointer of entries[] could be
wrong, since the output format is different with new struct
branch_stack.  Add a variable no_hw_idx in struct perf_sample to
indicate whether the hw_idx is output.  Add get_branch_entry() to return
corresponding pointer of entries[0].

To make dummy branch sample consistent as new branch sample, add hw_idx
in struct dummy_branch_stack for cs-etm and intel-pt.

Apply the new struct branch_stack for synthetic events as well.

Extend test case sample-parsing to support new struct branch_stack.

Committer notes:

Renamed get_branch_entries() to perf_sample__branch_entries() to have
proper namespacing and pave the way for this to be moved to libperf,
eventually.

Add 'static' to that inline as it is in a header.

Add 'hw_idx' to 'struct dummy_branch_stack' in cs-etm.c to fix the build
on arm64.
Signed-off-by: NKan Liang <kan.liang@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Pavel Gerasimov <pavel.gerasimov@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Vitaly Slobodskoy <vitaly.slobodskoy@intel.com>
Link: http://lore.kernel.org/lkml/20200228163011.19358-2-kan.liang@linux.intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      42bbabed
  15. 26 11月, 2019 1 次提交
  17. 12 11月, 2019 2 次提交
  19. 05 11月, 2019 1 次提交
  21. 18 10月, 2019 1 次提交
  23. 20 9月, 2019 2 次提交
  25. 01 9月, 2019 1 次提交
  27. 30 8月, 2019 1 次提交
  29. 23 8月, 2019 2 次提交
  31. 30 7月, 2019 6 次提交
  33. 10 7月, 2019 3 次提交
  35. 25 6月, 2019 1 次提交
  37. 05 6月, 2019 1 次提交
  39. 02 4月, 2019 1 次提交
  41. 02 3月, 2019 1 次提交
  43. 06 2月, 2019 2 次提交
  45. 25 1月, 2019 2 次提交
    • T
      perf script python: Use PyBytes for attr in trace-event-python · 72e0b15c
      由 Tony Jones 提交于 
      With Python3.  PyUnicode_FromStringAndSize is unsafe to call on attr and will
return NULL.  Use _PyBytes_FromStringAndSize (as with raw_buf).

Below is the observed behavior without the fix.  Note it is first necessary
to apply the prior fix (Add trace_context extension module to sys,modules):

  # ldd /usr/bin/perf | grep -i python
          libpython3.6m.so.1.0 => /usr/lib64/libpython3.6m.so.1.0 (0x00007f8e1dfb2000)

  # perf record -e raw_syscalls:sys_enter /bin/false
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.018 MB perf.data (21 samples) ]

  # perf script -g python | cat
  generated Python script: perf-script.py

  # perf script -s ./perf-script.py
  in trace_begin
  Segmentation fault (core dumped)
Signed-off-by: NTony Jones <tonyj@suse.de>
Acked-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jaroslav Škarvada <jskarvad@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com>
Fixes: 66dfdff0 ("perf tools: Add Python 3 support")
Link: http://lkml.kernel.org/r/20190124005229.16146-3-tonyj@suse.deSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      72e0b15c
    • T
      perf script python: Add trace_context extension module to sys.modules · cc437642
      由 Tony Jones 提交于 
      In Python3, the result of PyModule_Create (called from
scripts/python/Perf-Trace-Util/Context.c) is not automatically added to
sys.modules.  See: https://bugs.python.org/issue4592

Below is the observed behavior without the fix:

  # ldd /usr/bin/perf | grep -i python
	libpython3.6m.so.1.0 => /usr/lib64/libpython3.6m.so.1.0 (0x00007f8e1dfb2000)

  # perf record /bin/false
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.015 MB perf.data (17 samples) ]

  # perf script -g python | cat
  generated Python script: perf-script.py

  # perf script -s ./perf-script.py
  Traceback (most recent call last):
    File "./perf-script.py", line 18, in <module>
      from perf_trace_context import *
  ModuleNotFoundError: No module named 'perf_trace_context'
  Error running python script ./perf-script.py
  #

Committer notes:

To build with python3 use:

  $ make -C tools/perf PYTHON=python3

Use a non-const variable to pass the 'name' arg to
PyImport_AppendInittab(), as python2.6 has that as 'char *', which ends
up trowing this in some environments:

   CC       /tmp/build/perf/util/parse-branch-options.o
  util/scripting-engines/trace-event-python.c: In function 'python_start_script':
  util/scripting-engines/trace-event-python.c:1520:2: error: passing argument 1 of 'PyImport_AppendInittab' discards 'const' qualifier from pointer target type [-Werror]
    PyImport_AppendInittab("perf_trace_context", initfunc);
    ^
  In file included from /usr/include/python2.6/Python.h:130:0,
                   from util/scripting-engines/trace-event-python.c:22:
  /usr/include/python2.6/import.h:54:17: note: expected 'char *' but argument is of type 'const char *'
   PyAPI_FUNC(int) PyImport_AppendInittab(char *name, void (*initfunc)(void));
                   ^
  cc1: all warnings being treated as errors
Signed-off-by: NTony Jones <tonyj@suse.de>
Acked-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jaroslav Škarvada <jskarvad@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com>
Fixes: 66dfdff0 ("perf tools: Add Python 3 support")
Link: http://lkml.kernel.org/r/20190124005229.16146-2-tonyj@suse.deSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      cc437642
  47. 18 12月, 2018 2 次提交
  49. 20 9月, 2018 2 次提交