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From: Jiri Olsa <jolsa@kernel.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: lkml <linux-kernel@vger.kernel.org>,
	David Ahern <dsahern@gmail.com>, Ingo Molnar <mingo@kernel.org>,
	Namhyung Kim <namhyung@kernel.org>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: [PATCH 06/10] perf python: Add perf.tracepoint method
Date: Sun, 10 Jul 2016 13:07:58 +0200
Message-ID: <1468148882-10362-7-git-send-email-jolsa@kernel.org> (raw)
In-Reply-To: <1468148882-10362-1-git-send-email-jolsa@kernel.org>

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.

Link: http://lkml.kernel.org/n/tip-ssizvbkk2lds6bti2z69tikh@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 tools/perf/util/python.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

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, }
 };
 
-- 
2.4.11

  parent reply index

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-07-10 11:07 [PATCH 00/10] perf python: Add support to access tracepoint fields Jiri Olsa
2016-07-10 11:07 ` [PATCH 01/10] perf tools: Make perf_evlist__event2evsel public Jiri Olsa
2016-07-13  7:24   ` [tip:perf/core] perf evlist: Make event2evsel public tip-bot for Jiri Olsa
2016-07-10 11:07 ` [PATCH 02/10] perf tools: Introduce trace_event__tp_format_id function Jiri Olsa
2016-07-13  7:25   ` [tip:perf/core] perf tools: Introduce trace_event__tp_format_id() tip-bot for Jiri Olsa
2016-07-10 11:07 ` [PATCH 03/10] perf python: Init perf_event_attr::size in perf.evsel constructor Jiri Olsa
2016-07-13  7:25   ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-07-10 11:07 ` [PATCH 04/10] perf python: Fix pyrf_evlist__read_on_cpu event consuming Jiri Olsa
2016-07-13  7:26   ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-07-10 11:07 ` [PATCH 05/10] perf python: Put perf.event objects into dictionary Jiri Olsa
2016-07-13  7:26   ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-07-10 11:07 ` Jiri Olsa [this message]
2016-07-13  7:27   ` [tip:perf/core] perf python: Add perf.tracepoint method tip-bot for Jiri Olsa
2016-07-10 11:07 ` [PATCH 07/10] perf python: Add struct evsel into struct pyrf_event Jiri Olsa
2016-07-13  7:27   ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-07-10 11:08 ` [PATCH 08/10] perf python: Add support to resolve tracepoint fields Jiri Olsa
2016-07-13  7:27   ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-07-10 11:08 ` [PATCH 09/10] perf python: Add tracepoint example Jiri Olsa
2016-07-13  7:28   ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-07-10 11:08 ` [PATCH 10/10] perf script python: Fix string vs byte array resolving Jiri Olsa
2016-07-11 15:54   ` Steven Rostedt
2016-07-12  8:11     ` Jiri Olsa
2016-07-12 12:37       ` Steven Rostedt
2016-07-12 12:52         ` Jiri Olsa
2016-07-12 13:00           ` Steven Rostedt
2016-07-12 13:35             ` Jiri Olsa
2016-07-12 13:48               ` Steven Rostedt
2016-07-12 19:27                 ` Arnaldo Carvalho de Melo
2016-07-12 19:48                   ` Steven Rostedt
2016-07-13  9:06                     ` Jiri Olsa

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