2 # SPDX-License-Identifier: GPL-2.0
4 # -*- coding: utf-8 -*-
8 class tracepoint(perf.evsel):
9 def __init__(self, sys, name):
10 config = perf.tracepoint(sys, name)
11 perf.evsel.__init__(self,
12 type = perf.TYPE_TRACEPOINT,
14 freq = 0, sample_period = 1, wakeup_events = 1,
15 sample_type = perf.SAMPLE_PERIOD | perf.SAMPLE_TID | perf.SAMPLE_CPU | perf.SAMPLE_RAW | perf.SAMPLE_TIME)
18 tp = tracepoint("sched", "sched_switch")
20 threads = perf.thread_map(-1)
22 evlist = perf.evlist(cpus, threads)
28 evlist.poll(timeout = -1)
30 event = evlist.read_on_cpu(cpu)
34 if not isinstance(event, perf.sample_event):
37 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" % (
47 if __name__ == '__main__':