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authorDavid Rientjes <rientjes@google.com>2007-05-02 19:27:09 +0200
committerAndi Kleen <andi@basil.nowhere.org>2007-05-02 19:27:09 +0200
commit14694d736bb66d0ec250d05c81c6e98a19c229c6 (patch)
tree76e752f310859c9904ee772068b2915b138e6572 /Documentation/x86_64
parent8b8ca80e192b10eecc01fc44a2902510af86f73b (diff)
[PATCH] x86-64: split remaining fake nodes equally
Extends the numa=fake x86_64 command-line option to split the remaining system memory into equal-sized nodes. For example: numa=fake=2*512,4* gives two 512M nodes and the remaining system memory is split into four approximately equal chunks. This is beneficial for systems where the exact size of RAM is unknown or not necessarily relevant, but the granularity with which nodes shall be allocated is known. Cc: Andi Kleen <ak@suse.de> Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Paul Jackson <pj@sgi.com> Cc: Christoph Lameter <clameter@engr.sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation/x86_64')
-rw-r--r--Documentation/x86_64/boot-options.txt4
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/x86_64/boot-options.txt b/Documentation/x86_64/boot-options.txt
index 7500aad95f3..12a9aacecaa 100644
--- a/Documentation/x86_64/boot-options.txt
+++ b/Documentation/x86_64/boot-options.txt
@@ -155,7 +155,9 @@ NUMA
depending on the sizes and coefficients listed. For example:
numa=fake=2*512,1024,4*256
gives two 512M nodes, a 1024M node, and four 256M nodes. The
- remaining system RAM is allocated to an additional node.
+ remaining system RAM is allocated to an additional node. If
+ the last character of CMDLINE is a *, the remaining system RAM
+ is instead divided up equally among its coefficient.
numa=hotadd=percent
Only allow hotadd memory to preallocate page structures upto