diff options
Diffstat (limited to '')
| -rwxr-xr-x | tools/perf/python/tracepoint.py | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/tools/perf/python/tracepoint.py b/tools/perf/python/tracepoint.py index eb76f6516247..15b0c8268996 100755 --- a/tools/perf/python/tracepoint.py +++ b/tools/perf/python/tracepoint.py @@ -1,28 +1,35 @@ -#! /usr/bin/python +#! /usr/bin/env python # SPDX-License-Identifier: GPL-2.0 # -*- python -*- # -*- coding: utf-8 -*- import perf -class tracepoint(perf.evsel): - def __init__(self, sys, name): - config = perf.tracepoint(sys, name) - perf.evsel.__init__(self, - type = perf.TYPE_TRACEPOINT, - config = config, - freq = 0, sample_period = 1, wakeup_events = 1, - sample_type = perf.SAMPLE_PERIOD | perf.SAMPLE_TID | perf.SAMPLE_CPU | perf.SAMPLE_RAW | perf.SAMPLE_TIME) +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(): - tp = tracepoint("sched", "sched_switch") + change_proctitle() cpus = perf.cpu_map() threads = perf.thread_map(-1) + evlist = perf.parse_events("sched:sched_switch", cpus, threads) + # Disable tracking of mmaps and similar that are unnecessary. + for ev in evlist: + ev.tracking = False + # Configure evsels with default record options. + evlist.config() + # Simplify the sample_type and read_format of evsels + for ev in evlist: + ev.sample_type = ev.sample_type & ~perf.SAMPLE_IP + ev.read_format = 0 - evlist = perf.evlist(cpus, threads) - evlist.add(tp) evlist.open() evlist.mmap() + evlist.enable(); while True: evlist.poll(timeout = -1) @@ -34,7 +41,7 @@ def main(): if not isinstance(event, perf.sample_event): continue - print "time %u prev_comm=%s prev_pid=%d prev_prio=%d prev_state=0x%x ==> next_comm=%s next_pid=%d next_prio=%d" % ( + print("time %u prev_comm=%s prev_pid=%d prev_prio=%d prev_state=0x%x ==> next_comm=%s next_pid=%d next_prio=%d" % ( event.sample_time, event.prev_comm, event.prev_pid, @@ -42,7 +49,7 @@ def main(): event.prev_state, event.next_comm, event.next_pid, - event.next_prio) + event.next_prio)) if __name__ == '__main__': main() |