3 # -*- coding: utf-8 -*-
7 class tracepoint(perf.evsel):
8 def __init__(self, sys, name):
9 config = perf.tracepoint(sys, name)
10 perf.evsel.__init__(self,
11 type = perf.TYPE_TRACEPOINT,
13 freq = 0, sample_period = 1, wakeup_events = 1,
14 sample_type = perf.SAMPLE_PERIOD | perf.SAMPLE_TID | perf.SAMPLE_CPU | perf.SAMPLE_RAW | perf.SAMPLE_TIME)
17 tp = tracepoint("sched", "sched_switch")
19 threads = perf.thread_map(-1)
21 evlist = perf.evlist(cpus, threads)
27 evlist.poll(timeout = -1)
29 event = evlist.read_on_cpu(cpu)
33 if not isinstance(event, perf.sample_event):
36 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" % (
46 if __name__ == '__main__':