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46 lines
1.7 KiB
46 lines
1.7 KiB
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: [email protected] |
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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: [email protected] |
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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: [email protected] |
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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: [email protected] |
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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: [email protected] |
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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: [email protected] |
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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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