diff options
Diffstat (limited to 'tools/perf/python/perf_live.py')
| -rwxr-xr-x | tools/perf/python/perf_live.py | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/tools/perf/python/perf_live.py b/tools/perf/python/perf_live.py index 616b5f657463..99e73d58a96f 100755 --- a/tools/perf/python/perf_live.py +++ b/tools/perf/python/perf_live.py @@ -33,10 +33,16 @@ class LiveSession: # Poll for events with 100ms timeout try: self.evlist.poll(100) + # CPython's PyErr_SetFromErrno() invokes PyErr_CheckSignals() on + # EINTR, converting SIGINT into KeyboardInterrupt, which inherits + # from BaseException rather than InterruptedError/OSError, so + # Ctrl-C exits the loop and triggers finally: self.evlist.close() + # while non-fatal signals retry poll(). except InterruptedError: continue for cpu in self.cpus: - for _ in range(1000): # Limit to 1000 events per CPU per poll to prevent starvation + # Limit to 1000 events per CPU per poll to prevent starvation + for _ in range(1000): try: event = self.evlist.read_on_cpu(cpu) except TypeError as e: @@ -53,7 +59,5 @@ class LiveSession: if event.type == perf.RECORD_SAMPLE: self.sample_callback(event) - except KeyboardInterrupt: - pass finally: self.evlist.close() |