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authorPeter Zijlstra <peterz@infradead.org>2013-10-07 11:29:24 +0100
committerIngo Molnar <mingo@kernel.org>2013-10-09 14:47:53 +0200
commit6688cc05473b36a0a3d3971e1adf1712919b32eb (patch)
tree2305dca14e2df669b48138088bd93cf51db37721 /kernel/sched
parent7851a45cd3f6198bf542c30e27b330e8eeb3736c (diff)
downloadop-kernel-dev-6688cc05473b36a0a3d3971e1adf1712919b32eb.zip
op-kernel-dev-6688cc05473b36a0a3d3971e1adf1712919b32eb.tar.gz
mm: numa: Do not group on RO pages
And here's a little something to make sure not the whole world ends up in a single group. As while we don't migrate shared executable pages, we do scan/fault on them. And since everybody links to libc, everybody ends up in the same group. Suggested-by: Rik van Riel <riel@redhat.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Mel Gorman <mgorman@suse.de> Reviewed-by: Rik van Riel <riel@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/1381141781-10992-47-git-send-email-mgorman@suse.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched')
-rw-r--r--kernel/sched/fair.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 5bd309c..35661b8 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1361,9 +1361,10 @@ void task_numa_free(struct task_struct *p)
/*
* Got a PROT_NONE fault for a page on @node.
*/
-void task_numa_fault(int last_cpupid, int node, int pages, bool migrated)
+void task_numa_fault(int last_cpupid, int node, int pages, int flags)
{
struct task_struct *p = current;
+ bool migrated = flags & TNF_MIGRATED;
int priv;
if (!numabalancing_enabled)
@@ -1394,7 +1395,7 @@ void task_numa_fault(int last_cpupid, int node, int pages, bool migrated)
priv = 1;
} else {
priv = cpupid_match_pid(p, last_cpupid);
- if (!priv)
+ if (!priv && !(flags & TNF_NO_GROUP))
task_numa_group(p, last_cpupid);
}
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