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| author | Jiri Olsa <jolsa@kernel.org> | 2016-07-10 14:07:58 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-07-12 22:17:54 +0300 |
| commit | 1075fbb22f095c857930190e30fd3ae422d424b6 (patch) | |
| tree | a339b96b07b678b2f921f51c93e32eb278bd1d90 | |
| parent | 85e37de3a993b9e407398f792b996acad27f4cdc (diff) | |
| download | linux-1075fbb22f095c857930190e30fd3ae422d424b6.tar.xz | |
perf python: Add perf.tracepoint method
To get id of the tracepoint from subsystem and name strings. The
interface is:
id = perf.tracepoint(sys, name)
In case of error -1 is returned.
It will be used to get python tracepoint event's config value for
tracepoint event.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1468148882-10362-7-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/python.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c index fc277e486d17..45fdd4a68721 100644 --- a/tools/perf/util/python.c +++ b/tools/perf/util/python.c @@ -2,6 +2,7 @@ #include <structmember.h> #include <inttypes.h> #include <poll.h> +#include <linux/err.h> #include "evlist.h" #include "evsel.h" #include "event.h" @@ -1076,7 +1077,32 @@ static struct { { .name = NULL, }, }; +static PyObject *pyrf__tracepoint(struct pyrf_evsel *pevsel, + PyObject *args, PyObject *kwargs) +{ + struct event_format *tp_format; + static char *kwlist[] = { "sys", "name", NULL }; + char *sys = NULL; + char *name = NULL; + + if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|ss", kwlist, + &sys, &name)) + return NULL; + + tp_format = trace_event__tp_format(sys, name); + if (IS_ERR(tp_format)) + return PyInt_FromLong(-1); + + return PyInt_FromLong(tp_format->id); +} + static PyMethodDef perf__methods[] = { + { + .ml_name = "tracepoint", + .ml_meth = (PyCFunction) pyrf__tracepoint, + .ml_flags = METH_VARARGS | METH_KEYWORDS, + .ml_doc = PyDoc_STR("Get tracepoint config.") + }, { .ml_name = NULL, } }; |