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
910 B
Bash
32 lines
910 B
Bash
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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# description: ftrace - function profiler with function graph tracing
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# requires: function_profile_enabled set_ftrace_filter function_graph:tracer
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# The function graph tracer can now be run along side of the function
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# profiler. But there was a bug that caused the combination of the two
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# to crash. It also required the function graph tracer to be started
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# first.
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#
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# This test triggers that bug
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#
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# We need both function_graph and profiling to run this test
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fail() { # mesg
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echo $1
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exit_fail
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}
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echo "Enabling function graph tracer:"
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echo function_graph > current_tracer
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echo "enable profiler"
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# Older kernels do not allow function_profile to be enabled with
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# function graph tracer. If the below fails, mark it as unsupported
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echo 1 > function_profile_enabled || exit_unsupported
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# Let it run for a bit to make sure nothing explodes
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sleep 1
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exit 0
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