diff options
Diffstat (limited to 'tools/perf/scripts/python/flamegraph.py')
| -rwxr-xr-x | tools/perf/scripts/python/flamegraph.py | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/tools/perf/scripts/python/flamegraph.py b/tools/perf/scripts/python/flamegraph.py index 4f82dfea0a70..e49ff242b779 100755 --- a/tools/perf/scripts/python/flamegraph.py +++ b/tools/perf/scripts/python/flamegraph.py @@ -94,6 +94,11 @@ class FlameGraphCLI: return child def process_event(self, event): + # ignore events where the event name does not match + # the one specified by the user + if self.args.event_name and event.get("ev_name") != self.args.event_name: + return + pid = event.get("sample", {}).get("pid", 0) # event["dso"] sometimes contains /usr/lib/debug/lib/modules/*/vmlinux # for user-space processes; let's use pid for kernel or user-space distinction @@ -130,7 +135,10 @@ class FlameGraphCLI: else: output = subprocess.check_output(["perf", "report", "--header-only"]) - return output.decode("utf-8") + result = output.decode("utf-8") + if self.args.event_name: + result += "\nFocused event: " + self.args.event_name + return result except Exception as err: # pylint: disable=broad-except print("Error reading report header: {}".format(err), file=sys.stderr) return "" @@ -241,6 +249,11 @@ if __name__ == "__main__": default=False, action="store_true", help="allow unprompted downloading of HTML template") + parser.add_argument("-e", "--event", + default="", + dest="event_name", + type=str, + help="specify the event to generate flamegraph for") cli_args = parser.parse_args() cli = FlameGraphCLI(cli_args) |