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authorRashmica Gupta <rashmica.g@gmail.com>2018-08-03 09:06:01 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2018-08-10 15:12:32 +0300
commit24576a70e7dfa703617a5e7ae8e6cbd66cfb6e5d (patch)
tree2d6165064f906ff72fcd93d7b16020d214a0bf18 /Documentation/ABI
parentd3da701d3308ce1fa457f32c6c9e2102aedea030 (diff)
downloadlinux-24576a70e7dfa703617a5e7ae8e6cbd66cfb6e5d.tar.xz
Documentation: Update documentation on ppc-memtrace
Signed-off-by: Rashmica Gupta <rashmica.g@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/ppc-memtrace9
1 files changed, 5 insertions, 4 deletions
diff --git a/Documentation/ABI/testing/ppc-memtrace b/Documentation/ABI/testing/ppc-memtrace
index 2e8b93741270..9606aed33137 100644
--- a/Documentation/ABI/testing/ppc-memtrace
+++ b/Documentation/ABI/testing/ppc-memtrace
@@ -13,10 +13,11 @@ Contact: linuxppc-dev@lists.ozlabs.org
Description: Write an integer containing the size in bytes of the memory
you want removed from each NUMA node to this file - it must be
aligned to the memblock size. This amount of RAM will be removed
- from the kernel mappings and the following debugfs files will be
- created. This can only be successfully done once per boot. Once
- memory is successfully removed from each node, the following
- files are created.
+ from each NUMA node in the kernel mappings and the following
+ debugfs files will be created. Once memory is successfully
+ removed from each node, the following files are created. To
+ re-add memory to the kernel, echo 0 into this file (it will be
+ automatically onlined).
What: /sys/kernel/debug/powerpc/memtrace/<node-id>
Date: Aug 2017