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>
47 lines
1.7 KiB
Plaintext
47 lines
1.7 KiB
Plaintext
What: /sys/kernel/debug/powerpc/memtrace
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Date: Aug 2017
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KernelVersion: 4.14
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Contact: linuxppc-dev@lists.ozlabs.org
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Description: This folder contains the relevant debugfs files for the
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hardware trace macro to use. CONFIG_PPC64_HARDWARE_TRACING
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must be set.
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What: /sys/kernel/debug/powerpc/memtrace/enable
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Date: Aug 2017
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KernelVersion: 4.14
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Contact: linuxppc-dev@lists.ozlabs.org
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Description: Write an integer containing the size in bytes of the memory
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you want removed from each NUMA node to this file - it must be
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aligned to the memblock size. This amount of RAM will be removed
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from each NUMA node in the kernel mappings and the following
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debugfs files will be created. Once memory is successfully
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removed from each node, the following files are created. To
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re-add memory to the kernel, echo 0 into this file (it will be
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automatically onlined).
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What: /sys/kernel/debug/powerpc/memtrace/<node-id>
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Date: Aug 2017
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KernelVersion: 4.14
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Contact: linuxppc-dev@lists.ozlabs.org
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Description: This directory contains information about the removed memory
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from the specific NUMA node.
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What: /sys/kernel/debug/powerpc/memtrace/<node-id>/size
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Date: Aug 2017
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KernelVersion: 4.14
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Contact: linuxppc-dev@lists.ozlabs.org
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Description: This contains the size of the memory removed from the node.
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What: /sys/kernel/debug/powerpc/memtrace/<node-id>/start
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Date: Aug 2017
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KernelVersion: 4.14
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Contact: linuxppc-dev@lists.ozlabs.org
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Description: This contains the start address of the removed memory.
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What: /sys/kernel/debug/powerpc/memtrace/<node-id>/trace
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Date: Aug 2017
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KernelVersion: 4.14
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Contact: linuxppc-dev@lists.ozlabs.org
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Description: This is where the hardware trace macro will output the trace
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it generates.
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