linux-kernel - [tip:perf/core] perf/scripts: Remove unnecessary PyTuple resizes

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Message-ID: <tip-44ad9cd8f0893b9ae0ac729a7dc2a1ebcd170ac6@git.kernel.org>
Date:	Thu, 25 Feb 2010 10:08:27 GMT
From:	tip-bot for Tom Zanussi <tzanussi@...il.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, acme@...hat.com, paulus@...ba.org,
	hpa@...or.com, mingo@...hat.com, tzanussi@...il.com,
	a.p.zijlstra@...llo.nl, fweisbec@...il.com, rostedt@...dmis.org,
	k-keiichi@...jp.nec.com, tglx@...utronix.de, mingo@...e.hu
Subject: [tip:perf/core] perf/scripts: Remove unnecessary PyTuple resizes

Commit-ID:  44ad9cd8f0893b9ae0ac729a7dc2a1ebcd170ac6
Gitweb:     http://git.kernel.org/tip/44ad9cd8f0893b9ae0ac729a7dc2a1ebcd170ac6
Author:     Tom Zanussi <tzanussi@...il.com>
AuthorDate: Mon, 22 Feb 2010 01:12:59 -0600
Committer:  Frederic Weisbecker <fweisbec@...il.com>
CommitDate: Thu, 25 Feb 2010 04:07:49 +0100

perf/scripts: Remove unnecessary PyTuple resizes

If we know the size of a tuple in advance, there's no need to resize
it - start out with the known size in the first place.

Signed-off-by: Tom Zanussi <tzanussi@...il.com>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Keiichi KII <k-keiichi@...jp.nec.com>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
LKML-Reference: <1266822779.6426.4.camel@...picana>
Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
---
 .../util/scripting-engines/trace-event-python.c    |   13 +++++--------
 1 files changed, 5 insertions(+), 8 deletions(-)

diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
index d402f64..33a414b 100644
--- a/tools/perf/util/scripting-engines/trace-event-python.c
+++ b/tools/perf/util/scripting-engines/trace-event-python.c
@@ -68,7 +68,7 @@ static void define_value(enum print_arg_type field_type,
 	if (field_type == PRINT_SYMBOL)
 		handler_name = "define_symbolic_value";
 
-	t = PyTuple_New(MAX_FIELDS);
+	t = PyTuple_New(4);
 	if (!t)
 		Py_FatalError("couldn't create Python tuple");
 
@@ -79,9 +79,6 @@ static void define_value(enum print_arg_type field_type,
 	PyTuple_SetItem(t, n++, PyInt_FromLong(value));
 	PyTuple_SetItem(t, n++, PyString_FromString(field_str));
 
-	if (_PyTuple_Resize(&t, n) == -1)
-		Py_FatalError("error resizing Python tuple");
-
 	handler = PyDict_GetItemString(main_dict, handler_name);
 	if (handler && PyCallable_Check(handler)) {
 		retval = PyObject_CallObject(handler, t);
@@ -116,7 +113,10 @@ static void define_field(enum print_arg_type field_type,
 	if (field_type == PRINT_SYMBOL)
 		handler_name = "define_symbolic_field";
 
-	t = PyTuple_New(MAX_FIELDS);
+	if (field_type == PRINT_FLAGS)
+		t = PyTuple_New(3);
+	else
+		t = PyTuple_New(2);
 	if (!t)
 		Py_FatalError("couldn't create Python tuple");
 
@@ -125,9 +125,6 @@ static void define_field(enum print_arg_type field_type,
 	if (field_type == PRINT_FLAGS)
 		PyTuple_SetItem(t, n++, PyString_FromString(delim));
 
-	if (_PyTuple_Resize(&t, n) == -1)
-		Py_FatalError("error resizing Python tuple");
-
 	handler = PyDict_GetItemString(main_dict, handler_name);
 	if (handler && PyCallable_Check(handler)) {
 		retval = PyObject_CallObject(handler, t);
--
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