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>
32 lines
817 B
Bash
32 lines
817 B
Bash
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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# description: Snapshot and tracing_cpumask
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# requires: trace_marker tracing_cpumask snapshot
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# flags: instance
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# This testcase is constrived to reproduce a problem that the cpu buffers
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# become unavailable which is due to 'record_disabled' of array_buffer and
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# max_buffer being messed up.
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# Store origin cpumask
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ORIG_CPUMASK=`cat tracing_cpumask`
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# Stop tracing all cpu
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echo 0 > tracing_cpumask
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# Take a snapshot of the main buffer
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echo 1 > snapshot
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# Restore origin cpumask, note that there should be some cpus being traced
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echo ${ORIG_CPUMASK} > tracing_cpumask
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# Set tracing on
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echo 1 > tracing_on
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# Write a log into buffer
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echo "test input 1" > trace_marker
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# Ensure the log writed so that cpu buffers are still available
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grep -q "test input 1" trace
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exit 0
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