Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
62 lines
1.1 KiB
Bash
62 lines
1.1 KiB
Bash
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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# description: event tracing - restricts events based on pid
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# requires: set_event set_event_pid events/sched
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# flags: instance
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do_reset() {
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echo > set_event
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echo > set_event_pid
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echo 0 > options/event-fork
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clear_trace
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}
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fail() { #msg
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do_reset
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echo $1
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exit_fail
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}
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echo 0 > options/event-fork
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echo 1 > events/sched/sched_switch/enable
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yield
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count=`cat trace | grep sched_switch | wc -l`
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if [ $count -eq 0 ]; then
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fail "sched_switch events are not recorded"
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fi
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do_reset
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read mypid rest < /proc/self/stat
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echo $mypid > set_event_pid
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grep -q $mypid set_event_pid
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echo 'sched:sched_switch' > set_event
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yield
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count=`cat trace | grep sched_switch | grep -v "pid=$mypid" | wc -l`
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if [ $count -ne 0 ]; then
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fail "sched_switch events from other task are recorded"
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fi
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do_reset
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echo $mypid > set_event_pid
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echo 1 > options/event-fork
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echo 1 > events/sched/sched_switch/enable
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yield
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count=`cat trace | grep sched_switch | grep -v "pid=$mypid" | wc -l`
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if [ $count -eq 0 ]; then
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fail "sched_switch events from other task are not recorded"
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fi
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do_reset
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exit 0
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