| From | Andrea Arcangeli <> | Subject | [PATCH 29/39] autonuma: default mempolicy follow AutoNUMA | Date | Mon, 26 Mar 2012 19:46:16 +0200 |
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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 <aarcange@redhat.com> --- mm/mempolicy.c | 15 +++++++++++++-- 1 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index cfb6c86..f3c03cb 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -1929,10 +1929,21 @@ 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->sched_autonuma) + nid = current->sched_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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