e72e9355e3
git: https://android.googlesource.com/kernel/common branch: android-4.9 commit: 03fcc2fe71308c2d164b4e6cbfc738c63e670444
61 lines
1.0 KiB
Bash
61 lines
1.0 KiB
Bash
#!/bin/sh
|
|
# description: event tracing - enable/disable with subsystem level files
|
|
|
|
do_reset() {
|
|
echo > set_event
|
|
clear_trace
|
|
}
|
|
|
|
fail() { #msg
|
|
do_reset
|
|
echo $1
|
|
exit $FAIL
|
|
}
|
|
|
|
yield() {
|
|
ping localhost -c 1 || sleep .001 || usleep 1 || sleep 1
|
|
}
|
|
|
|
if [ ! -f set_event -o ! -d events/sched ]; then
|
|
echo "event tracing is not supported"
|
|
exit_unsupported
|
|
fi
|
|
|
|
reset_tracer
|
|
do_reset
|
|
|
|
echo 'sched:*' > set_event
|
|
|
|
yield
|
|
|
|
count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
|
|
if [ $count -lt 3 ]; then
|
|
fail "at least fork, exec and exit events should be recorded"
|
|
fi
|
|
|
|
do_reset
|
|
|
|
echo 1 > events/sched/enable
|
|
|
|
yield
|
|
|
|
count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
|
|
if [ $count -lt 3 ]; then
|
|
fail "at least fork, exec and exit events should be recorded"
|
|
fi
|
|
|
|
do_reset
|
|
|
|
echo 0 > events/sched/enable
|
|
|
|
yield
|
|
|
|
count=`cat trace | grep -v ^# | awk '{ print $5 }' | sort -u | wc -l`
|
|
if [ $count -ne 0 ]; then
|
|
fail "any of scheduler events should not be recorded"
|
|
fi
|
|
|
|
do_reset
|
|
|
|
exit 0
|