perf python: Make twatch.py work with both python2 and python3

Will be used to test patches allowing to build perf with python3, so
that we make sure that we can build with both versions.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jaroslav Škarvada <jskarvad@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-c2ynv0ozr3eifzsyit6qgh3h@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/python/twatch.py b/tools/perf/python/twatch.py
index c235c22b107ab5531d3f03de1f328f5fc2758a4c..0a29c5c3079f11f543cad4f919ca24f3293b7202 100755 (executable)
--- a/tools/perf/python/twatch.py
+++ b/tools/perf/python/twatch.py
@@ -42,10 +42,10 @@ def main(context_switch = 0, thread = -1):
                        event = evlist.read_on_cpu(cpu)
                        if not event:
                                continue
-                       print "cpu: %2d, pid: %4d, tid: %4d" % (event.sample_cpu,
-                                                               event.sample_pid,
-                                                               event.sample_tid),
-                       print event
+                       print("cpu: {0}, pid: {1}, tid: {2} {3}".format(event.sample_cpu,
+                                                                        event.sample_pid,
+                                                                        event.sample_tid,
+                                                                        event))
 
 if __name__ == '__main__':
     """