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v0.8.1
https://github.com/torvalds/linux
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Tip revision: fd6988496e79a6a4bdb514a4655d2920209eb85d authored by Linus Torvalds on 29 December 2019, 23:29:16 UTC
Linux 5.5-rc4
Tip revision: fd69884
clear_select_events.tc
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: Generic dynamic event - selective clear (compatibility)

[ -f dynamic_events ] || exit_unsupported

grep -q "place: \[<module>:\]<symbol>" README || exit_unsupported
grep -q "place (kretprobe): \[<module>:\]<symbol>" README || exit_unsupported

grep -q "s:\[synthetic/\]" README || exit_unsupported

[ -f synthetic_events ] || exit_unsupported
[ -f kprobe_events ] || exit_unsupported

echo 0 > events/enable
echo > dynamic_events

PLACE=_do_fork

setup_events() {
echo "p:myevent1 $PLACE" >> dynamic_events
echo "s:latency1 u64 lat; pid_t pid;" >> dynamic_events
echo "r:myevent2 $PLACE" >> dynamic_events
echo "s:latency2 u64 lat; pid_t pid;" >> dynamic_events

grep -q myevent1 dynamic_events
grep -q myevent2 dynamic_events
grep -q latency1 dynamic_events
grep -q latency2 dynamic_events
}

setup_events
echo > synthetic_events

grep -q myevent1 dynamic_events
grep -q myevent2 dynamic_events
! grep -q latency1 dynamic_events
! grep -q latency2 dynamic_events

echo > dynamic_events

setup_events
echo > kprobe_events

! grep -q myevent1 dynamic_events
! grep -q myevent2 dynamic_events
grep -q latency1 dynamic_events
grep -q latency2 dynamic_events

echo > dynamic_events
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