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@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Keiichi KII <k-keiichi@bx.jp.nec.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <1266822779.6426.4.camel@tropicana>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>

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 d402f64f9b46..33a414bbba3e 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);