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mm: numa: Migrate on reference policy

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This is the simplest possible policy that still does something of note.
When a pte_numa is faulted, it is moved immediately. Any replacement
policy must at least do better than this and in all likelihood this
policy regresses normal workloads.

Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: Rik van Riel <riel@redhat.com>
This commit is contained in:
Mel Gorman
2012-11-02 18:19:13 +00:00
parent 03c5a6e163
commit 5606e3877a
2 changed files with 37 additions and 2 deletions
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include/uapi/linux/mempolicy.h
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@@ -67,6 +67,7 @@ enum mpol_rebind_step {
#define MPOL_F_LOCAL (1 << 1) /* preferred local allocation */
#define MPOL_F_REBINDING (1 << 2) /* identify policies in rebinding */
#define MPOL_F_MOF (1 << 3) /* this policy wants migrate on fault */
#define MPOL_F_MORON (1 << 4) /* Migrate On pte_numa Reference On Node */
#endif /* _UAPI_LINUX_MEMPOLICY_H */