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perf python: Initialize 'page_size' variable

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The commit 0c1fe6b:

 'perf tools: Have the page size value available for all tools'

Broke the python binding because the global variable 'page_size' is
initialized on the main() routine, that is not called when using
just the python binding, causing evlist.mmap() to fail because it
expects that variable to be initialized to the system's page size.

Fix it by initializing it on the binding init routine.

Reported-by: David Ahern <dsahern@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.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-vrvp3azmbfzexnpmkhmvtzzc@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2012-10-16 14:51:04 -03:00
parent 0089fa9831
commit 0da2e9c248
1 changed files with 2 additions and 0 deletions
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2
tools/perf/util/python.c
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@ -1015,6 +1015,8 @@ PyMODINIT_FUNC initperf(void)
pyrf_cpu_map__setup_types() < 0) pyrf_cpu_map__setup_types() < 0)
return; return;
page_size = sysconf(_SC_PAGE_SIZE);
Py_INCREF(&pyrf_evlist__type); Py_INCREF(&pyrf_evlist__type);
PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type); PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);