linux-stable.git/tools/perf/util/scripting-engines/trace-event-python.c, branch linux-5.2.y

perf tools, tools lib traceevent: Rename "pevent" member of struct tep_event to "tep"

2019-04-01T18:18:10+00:00

The member "pevent" of the struct tep_event is renamed to "tep". This
makes the struct consistent with the chosen naming convention:

  tep (trace event parser), instead of the old pevent.

Signed-off-by: Tzvetomir Stoyanov 
Cc: Andrew Morton 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Link: http://lore.kernel.org/linux-trace-devel/20190401132111.13727-3-tstoyanov@vmware.com
Link: http://lkml.kernel.org/r/20190401164344.627724996@goodmis.org
Signed-off-by: Steven Rostedt (VMware) 
Signed-off-by: Arnaldo Carvalho de Melo

perf db-export: Add calls parent_id to enable creation of call trees

2019-03-01T17:50:47+00:00

The call_path can be used to find the parent symbol for a call but not
the exact parent call. To do that add parent_id to the call_return
export. This enables the creation of a call tree from the exported data.

Signed-off-by: Adrian Hunter 
Cc: Jiri Olsa 
Link: https://lkml.kernel.org/n/tip-6j7tzdxo67cox6kan7k22oo6@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add missing include for symbols.h

2019-02-06T13:00:38+00:00

Several places were using definitions found in symbols.h but not
including it, getting it by sheer luck from some other headers that now
are in the process of removing that include because they don't need it
or because simply having struct forward declarations is enough, fix it.

Cc: Adrian Hunter 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Link: https://lkml.kernel.org/n/tip-xbcvvx296d70kpg9wb0qmeq9@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

pref tools: Add missing map.h includes

2019-02-06T13:00:38+00:00

Lots of places get the map.h file indirectly, and since we're going to
remove it from machine.h, then those need to include it directly, do it
now, before we remove that dep.

Cc: Adrian Hunter 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Link: https://lkml.kernel.org/n/tip-ob8jehdjda8h5jsrv9dqj9tf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf script python: Use PyBytes for attr in trace-event-python

2019-01-25T14:12:10+00:00

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: Tony Jones 
Acked-by: Jiri Olsa 
Tested-by: Arnaldo Carvalho de Melo 
Cc: Jaroslav Škarvada 
Cc: Jonathan Corbet 
Cc: Ravi Bangoria 
Cc: Seeteena Thoufeek 
Fixes: 66dfdff03d19 ("perf tools: Add Python 3 support")
Link: http://lkml.kernel.org/r/20190124005229.16146-3-tonyj@suse.de
Signed-off-by: Arnaldo Carvalho de Melo

perf script python: Add trace_context extension module to sys.modules

2019-01-25T14:12:10+00:00

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 
      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: Tony Jones 
Acked-by: Jiri Olsa 
Tested-by: Arnaldo Carvalho de Melo 
Cc: Jaroslav Škarvada 
Cc: Jonathan Corbet 
Cc: Ravi Bangoria 
Cc: Seeteena Thoufeek 
Fixes: 66dfdff03d19 ("perf tools: Add Python 3 support")
Link: http://lkml.kernel.org/r/20190124005229.16146-2-tonyj@suse.de
Signed-off-by: Arnaldo Carvalho de Melo

tools lib traceevent, perf tools: Rename 'struct tep_event_format' to 'struct tep_event'

2018-12-17T17:56:02+00:00

In order to make libtraceevent into a proper library, variables, data
structures and functions require a unique prefix to prevent name space
conflicts.

This renames 'struct tep_event_format' to 'struct tep_event', which
describes more closely the purpose of the struct.

Signed-off-by: Tzvetomir Stoyanov 
Cc: Adrian Hunter 
Cc: Andrew Morton 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Link: http://lkml.kernel.org/r/20181130154647.436403995@goodmis.org
Signed-off-by: Steven Rostedt (VMware) 
[ Fixup conflict with 6e33c250a88f ("tools lib traceevent: Fix compile warnings in tools/lib/traceevent/event-parse.c") ]
Signed-off-by: Arnaldo Carvalho de Melo

perf script: Use fallbacks for branch stacks

2018-12-17T17:54:18+00:00

Branch stacks do not necessarily have the same cpumode as the 'ip'. Use
the fallback functions in those cases.

This patch depends on patch "perf tools: Add fallback functions for cases
where cpumode is insufficient".

Signed-off-by: Adrian Hunter 
Cc: Andi Kleen 
Cc: David S. Miller 
Cc: Jiri Olsa 
Cc: Leo Yan 
Cc: Mathieu Poirier 
Cc: stable@vger.kernel.org # 4.19
Link: http://lkml.kernel.org/r/20181106210712.12098-4-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo

tools lib traceevent, perf tools: Rename enum print_arg_type to enum tep_print_arg_type

2018-09-19T20:17:44+00:00

In order to make libtraceevent into a proper library, variables, data
structures and functions require a unique prefix to prevent name space
conflicts. That prefix will be "tep_". This renames enum print_arg_type to
enum tep_print_arg_type and add prefix TEP_ to all its members.

Signed-off-by: Tzvetomir Stoyanov (VMware) 
Cc: Andrew Morton 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Tzvetomir Stoyanov (VMware) 
Cc: linux-trace-devel@vger.kernel.org
Link: http://lkml.kernel.org/r/20180919185723.533960748@goodmis.org
Signed-off-by: Steven Rostedt (VMware) 
Signed-off-by: Arnaldo Carvalho de Melo

tools lib traceevent, perf tools: Add prefix tep_ to all print_* structures

2018-09-19T20:16:34+00:00

In order to make libtraceevent into a proper library, variables, data
structures and functions require a unique prefix to prevent name space
conflicts. That prefix will be "tep_". This adds prefix tep_ to all
print_* structures

Signed-off-by: Tzvetomir Stoyanov (VMware) 
Cc: Andrew Morton 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Tzvetomir Stoyanov (VMware) 
Cc: linux-trace-devel@vger.kernel.org
Link: http://lkml.kernel.org/r/20180919185723.381753268@goodmis.org
Signed-off-by: Steven Rostedt (VMware) 
Signed-off-by: Arnaldo Carvalho de Melo