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mm: sched: numa: Control enabling and disabling of NUMA balancing

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This patch adds Kconfig options and kernel parameters to allow the
enabling and disabling of automatic NUMA balancing. The existance
of such a switch was and is very important when debugging problems
related to transparent hugepages and we should have the same for
automatic NUMA placement.

Signed-off-by: Mel Gorman <[email protected]>
This commit is contained in:
Mel Gorman 2012-11-22 11:16:36 +00:00
commit 1a687c2e9a
7 changed files with 101 additions and 17 deletions
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3
Documentation/kernel-parameters.txt
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@ -1996,6 +1996,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
nr_uarts= [SERIAL] maximum number of UARTs to be registered.
numa_balancing= [KNL,X86] Enable or disable automatic NUMA balancing.
Allowed values are enable and disable
numa_zonelist_order= [KNL, BOOT] Select zonelist order for NUMA.
one of ['zone', 'node', 'default'] can be specified
This can be set from sysctl after boot.