linux-kernel - [PATCH] perf/scripts: tuple was set from long in both branches in python_process

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Date:	Mon, 22 Mar 2010 18:22:54 +0100
From:	Roel Kluin <roel.kluin@...il.com>
To:	Tom Zanussi <tzanussi@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] perf/scripts: tuple was set from long in both branches in
 python_process_event()

Regardless of the sign, the tuple was set from a long.

Signed-off-by: Roel Kluin <roel.kluin@...il.com>
---
 .../util/scripting-engines/trace-event-python.c    |   13 ++++++++-----
 1 files changed, 8 insertions(+), 5 deletions(-)

Was something like this intended?

diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
index 33a414b..1d710b6 100644
--- a/tools/perf/util/scripting-engines/trace-event-python.c
+++ b/tools/perf/util/scripting-engines/trace-event-python.c
@@ -208,7 +208,7 @@ static void python_process_event(int cpu, void *data,
 				 int size __unused,
 				 unsigned long long nsecs, char *comm)
 {
-	PyObject *handler, *retval, *context, *t;
+	PyObject *handler, *retval, *context, *t, *obj;
 	static char handler_name[256];
 	struct format_field *field;
 	unsigned long long val;
@@ -256,16 +256,19 @@ static void python_process_event(int cpu, void *data,
 				offset &= 0xffff;
 			} else
 				offset = field->offset;
-			PyTuple_SetItem(t, n++,
-				PyString_FromString((char *)data + offset));
+			obj = PyString_FromString((char *)data + offset);
 		} else { /* FIELD_IS_NUMERIC */
 			val = read_size(data + field->offset, field->size);
 			if (field->flags & FIELD_IS_SIGNED) {
-				PyTuple_SetItem(t, n++, PyInt_FromLong(val));
+				obj = PyInt_FromLong(val);
 			} else {
-				PyTuple_SetItem(t, n++, PyInt_FromLong(val));
+				if (sizeof(val) > sizeof(Py_ssize_t))
+					val += 1ULL <<
+						(sizeof(Py_ssize_t) * 8);
+				obj = PyLong_FromUnsignedLongLong(val);
 			}
 		}
+		PyTuple_SetItem(t, n++, obj);
 	}
 
 	if (_PyTuple_Resize(&t, n) == -1)

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