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 <[e-mail]>
Reviewed-by: Ian Rogers <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Namhyung Kim <[e-mail]>

tools/perf/python/tracepoint.py

···
 
 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)