3d5cbd4cbf
This reverts commit ab9895b78e.
From Greg's reversion:
"Looks like some of the Android build systems do NOT have /usr/bin/env so
revert this change until that happens.
Specifically the following builds fail without this change reverted:
kernel_kasan_aarch64 on aosp_kernel-common-android-mainline
kernel_virt_kasan_aarch64 on aosp_kernel-common-android-mainline
kernel_virt_kasan_x86_64 on aosp_kernel-common-android-mainline
kernel_kasan_x86_64 on aosp_kernel-common-android-mainline"
'env' should not fail. Let's have another go at applying this.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Change-Id: I8f56ed40e8bb24474d6c454ff6d1982c86d9adc3
49 lines
1.5 KiB
Python
Executable File
49 lines
1.5 KiB
Python
Executable File
#! /usr/bin/env python
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# SPDX-License-Identifier: GPL-2.0
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# -*- python -*-
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# -*- coding: utf-8 -*-
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import perf
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class tracepoint(perf.evsel):
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def __init__(self, sys, name):
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config = perf.tracepoint(sys, name)
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perf.evsel.__init__(self,
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type = perf.TYPE_TRACEPOINT,
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config = config,
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freq = 0, sample_period = 1, wakeup_events = 1,
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sample_type = perf.SAMPLE_PERIOD | perf.SAMPLE_TID | perf.SAMPLE_CPU | perf.SAMPLE_RAW | perf.SAMPLE_TIME)
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def main():
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tp = tracepoint("sched", "sched_switch")
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cpus = perf.cpu_map()
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threads = perf.thread_map(-1)
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evlist = perf.evlist(cpus, threads)
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evlist.add(tp)
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evlist.open()
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evlist.mmap()
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while True:
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evlist.poll(timeout = -1)
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for cpu in cpus:
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event = evlist.read_on_cpu(cpu)
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if not event:
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continue
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if not isinstance(event, perf.sample_event):
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continue
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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" % (
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event.sample_time,
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event.prev_comm,
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event.prev_pid,
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event.prev_prio,
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event.prev_state,
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event.next_comm,
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event.next_pid,
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event.next_prio)
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if __name__ == '__main__':
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main()
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