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Date: Wed, 23 Jan 2019 16:52:24 -0800 From: Tony Jones <tonyj@...e.de> To: linux-kernel@...r.kernel.org Cc: Seeteena Thoufeek <s1seetee@...ux.vnet.ibm.com>, Ravi Bangoria <ravi.bangoria@...ux.ibm.com>, Arnaldo Carvalho de Melo <acme@...nel.org>, Jiri Olsa <jolsa@...nel.org>, Jonathan Corbet <corbet@....net>, linux-perf-users@...r.kernel.org, Tony Jones <tonyj@...e.de>, Jaroslav Škarvada <jskarvad@...hat.com> Subject: [PATCH 1/6] perf script python: Add trace_context extension module to sys,modules 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 Signed-off-By: Tony Jones <tonyj@...e.de> Cc: Jaroslav Škarvada <jskarvad@...hat.com> Fixes: 66dfdff03d196e51322c6a85c0d8db8bb2bdd655 --- tools/perf/util/scripting-engines/trace-event-python.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c index 87ef16a1b17e..40300d8e80a7 100644 --- a/tools/perf/util/scripting-engines/trace-event-python.c +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -1494,6 +1494,7 @@ static void _free_command_line(wchar_t **command_line, int num) static int python_start_script(const char *script, int argc, const char **argv) { struct tables *tables = &tables_global; + PyMODINIT_FUNC (*initfunc)(void); #if PY_MAJOR_VERSION < 3 const char **command_line; #else @@ -1504,24 +1505,25 @@ static int python_start_script(const char *script, int argc, const char **argv) FILE *fp; #if PY_MAJOR_VERSION < 3 + initfunc = initperf_trace_context; command_line = malloc((argc + 1) * sizeof(const char *)); command_line[0] = script; for (i = 1; i < argc + 1; i++) command_line[i] = argv[i - 1]; #else + initfunc = PyInit_perf_trace_context; command_line = malloc((argc + 1) * sizeof(wchar_t *)); command_line[0] = Py_DecodeLocale(script, NULL); for (i = 1; i < argc + 1; i++) command_line[i] = Py_DecodeLocale(argv[i - 1], NULL); #endif + PyImport_AppendInittab("perf_trace_context", initfunc); Py_Initialize(); #if PY_MAJOR_VERSION < 3 - initperf_trace_context(); PySys_SetArgv(argc + 1, (char **)command_line); #else - PyInit_perf_trace_context(); PySys_SetArgv(argc + 1, command_line); #endif -- 2.20.1
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