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@@ -13,10 +13,11 @@ 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 the kernel mappings and the following debugfs files will be
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- created. This can only be successfully done once per boot. Once
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- memory is successfully removed from each node, the following
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- files are created.
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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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Rashmica Gupta