[PATCH 26/40] autonuma: default mempolicy follow AutoNUMA
From: Andrea Arcangeli <hidden>
Date: 2012-06-28 13:06:29
Also in:
lkml
Subsystem:
memory management, memory management - memory policy and migration, the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
If the task has already been moved to an autonuma_node try to allocate memory from it even if it's temporarily not the local node. Chances are it's where most of its memory is already located and where it will run in the future. Signed-off-by: Andrea Arcangeli <redacted> --- mm/mempolicy.c | 15 +++++++++++++-- 1 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 1d771e4..86c0df0 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c@@ -1945,10 +1945,21 @@ retry_cpuset: */ if (pol->mode == MPOL_INTERLEAVE) page = alloc_page_interleave(gfp, order, interleave_nodes(pol)); - else + else { + int nid; +#ifdef CONFIG_AUTONUMA + nid = -1; + if (current->task_autonuma) + nid = current->task_autonuma->autonuma_node; + if (nid < 0) + nid = numa_node_id(); +#else + nid = numa_node_id(); +#endif page = __alloc_pages_nodemask(gfp, order, - policy_zonelist(gfp, pol, numa_node_id()), + policy_zonelist(gfp, pol, nid), policy_nodemask(gfp, pol)); + } if (unlikely(!put_mems_allowed(cpuset_mems_cookie) && !page)) goto retry_cpuset; --
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