perf python tracepoint.py: Change the COMM using setproctitle if available

Otherwise when debugging we see just "python" in perf, top, etc.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20250312203141.285263-4-acme@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

diff --git a/tools/perf/python/tracepoint.py b/tools/perf/python/tracepoint.py
index 38b2b6d11f64566a6dcbd9df5b2227f2c287604f..15b0c82689966f230bc7ce0f7f2dac552a8db8a6 100755 (executable)
--- a/tools/perf/python/tracepoint.py
+++ b/tools/perf/python/tracepoint.py
@@ -5,7 +5,15 @@
 
 import perf
 
+def change_proctitle():
+    try:
+        import setproctitle
+        setproctitle.setproctitle("tracepoint.py")
+    except:
+        print("Install the setproctitle python package to help with top and friends")
+
 def main():
+    change_proctitle()
     cpus    = perf.cpu_map()
     threads = perf.thread_map(-1)
     evlist = perf.parse_events("sched:sched_switch", cpus, threads)