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>
75 lines
1.5 KiB
Bash
75 lines
1.5 KiB
Bash
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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# description: event trigger - test poll wait on histogram
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# requires: set_event events/sched/sched_process_free/trigger events/sched/sched_process_free/hist
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# flags: instance
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POLL=${FTRACETEST_ROOT}/poll
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if [ ! -x ${POLL} ]; then
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echo "poll program is not compiled!"
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exit_unresolved
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fi
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EVENT=events/sched/sched_process_free/
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# Check poll ops is supported. Before implementing poll on hist file, it
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# returns soon with POLLIN | POLLOUT, but not POLLPRI.
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# This must wait >1 sec and return 1 (timeout).
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set +e
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${POLL} -I -t 1000 ${EVENT}/hist
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ret=$?
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set -e
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if [ ${ret} != 1 ]; then
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echo "poll on hist file is not supported"
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exit_unsupported
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fi
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# Test POLLIN
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echo > trace
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echo 'hist:key=comm if comm =="sleep"' > ${EVENT}/trigger
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echo 1 > ${EVENT}/enable
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# This sleep command will exit after 2 seconds.
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sleep 2 &
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BGPID=$!
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# if timeout happens, poll returns 1.
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${POLL} -I -t 4000 ${EVENT}/hist
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echo 0 > tracing_on
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if [ -d /proc/${BGPID} ]; then
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echo "poll exits too soon"
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kill -KILL ${BGPID} ||:
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exit_fail
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fi
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if ! grep -qw "sleep" trace; then
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echo "poll exits before event happens"
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exit_fail
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fi
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# Test POLLPRI
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echo > trace
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echo 1 > tracing_on
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# This sleep command will exit after 2 seconds.
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sleep 2 &
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BGPID=$!
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# if timeout happens, poll returns 1.
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${POLL} -P -t 4000 ${EVENT}/hist
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echo 0 > tracing_on
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if [ -d /proc/${BGPID} ]; then
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echo "poll exits too soon"
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kill -KILL ${BGPID} ||:
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exit_fail
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fi
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if ! grep -qw "sleep" trace; then
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echo "poll exits before event happens"
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exit_fail
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fi
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exit_pass
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