#! /usr/bin/python
# -*- 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 main():
tp = tracepoint("sched", "sched_switch")
cpus = perf.cpu_map()
threads = perf.thread_map(-1)
evlist = perf.evlist(cpus, threads)
evlist.add(tp)
evlist.open()
evlist.mmap()
while True:
evlist.poll(timeout = -1)
for cpu in cpus:
event = evlist.read_on_cpu(cpu)
if not event:
continue
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" % (
event.sample_time,
event.prev_comm,
event.prev_pid,
event.prev_prio,
event.prev_state,
event.next_comm,
event.next_pid,
event.next_prio)
if __name__ == '__main__':
main()
-next plumbings
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
- use-after-free in algif_aead
- modular aesni regression when pcbc is modular but absent
- bug causing IO page faults in ccp
- double list add in ccp
- NULL pointer dereference in qat (two patches)
- panic in chcr
- NULL pointer dereference in chcr
- out-of-bound access in chcr
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: chcr - Fix key length for RFC4106
crypto: algif_aead - Fix kernel panic on list_del
crypto: aesni - Fix failure when pcbc module is absent
crypto: ccp - Fix double add when creating new DMA command
crypto: ccp - Fix DMA operations when IOMMU is enabled
crypto: chcr - Check device is allocated before use
crypto: chcr - Fix panic on dma_unmap_sg
crypto: qat - zero esram only for DH85x devices
crypto: qat - fix bar discovery for c62x