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#!/usr/bin/env python3
import os
from runtest import TestBase
class TestCase(TestBase):
def __init__(self):
TestBase.__init__(self, 'fork', serial=True, result="""
# DURATION TID FUNCTION
[ 6532] | /* sched:sched_process_exec (filename=t-fork pid=6532 old_pid=6532) */
[ 6532] | main() {
[ 6532] | fork() {
[ 6532] | /* sched:sched_process_fork (comm=t-fork pid=6532 child_comm=t-fork child_pid=6536) */
144.501 us [ 6532] | } /* fork */
[ 6532] | wait() {
[ 6532] | /* sched:sched_process_wait (comm=t-fork pid=0 prio=120) */
[ 6536] | } /* fork */
[ 6536] | a() {
[ 6536] | b() {
[ 6536] | c() {
1.674 us [ 6536] | getpid();
4.648 us [ 6536] | } /* c */
5.131 us [ 6536] | } /* b */
5.488 us [ 6536] | } /* a */
18.724 us [ 6536] | } /* main */
[ 6536] | /* sched:sched_process_exit (comm=t-fork pid=6536 prio=120) */
50.274 ms [ 6532] | } /* wait */
[ 6532] | a() {
[ 6532] | b() {
[ 6532] | c() {
3.626 us [ 6532] | getpid();
5.851 us [ 6532] | } /* c */
6.217 us [ 6532] | } /* b */
6.522 us [ 6532] | } /* a */
50.451 ms [ 6532] | } /* main */
[ 6532] | /* sched:sched_process_exit (comm=t-fork pid=6532 prio=120) */
""")
def prerun(self, timeout):
if os.geteuid() != 0:
return TestBase.TEST_SKIP
if os.path.exists('/.dockerenv'):
return TestBase.TEST_SKIP
return TestBase.TEST_SUCCESS
def setup(self):
self.option = '-E sched:sched_process_*@kernel --kernel-full --event-full'
def sort(self, output, ignored=''):
""" This function post-processes output of the test to be compared .
It ignores blank and comment (#) lines and remaining functions. """
result = []
before_main = True
for ln in output.split('\n'):
if ln.find(' | main()') > 0:
before_main = False
if before_main:
continue
# ignore blank lines and comments
if ln.strip() == '' or ln.startswith('#'):
continue
# delete event specific info
if ln.find('sched:sched_') > 0:
ln = ln.split('(', 1)[0] + '*/'
func = ln.split('|', 1)[-1]
result.append(func)
return '\n'.join(result)
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