[PATCH 15/40] autonuma: knuma_migrated per NUMA node queues

[Andrea Arcangeli <aarcange@redhat.com>]

This implements the knuma_migrated queues. The pages are added to
these queues through the NUMA hinting page faults (memory follow CPU
algorithm with false sharing evaluation) and knuma_migrated then is
waken with a certain hysteresis to migrate the memory in round robin
from all remote nodes to its local node.

The head that belongs to the local node that knuma_migrated runs on,
for now must be empty and it's not being used.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
---
 include/linux/mmzone.h |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 2427706..d53b26a 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -697,6 +697,12 @@ typedef struct pglist_data {
 	struct task_struct *kswapd;
 	int kswapd_max_order;
 	enum zone_type classzone_idx;
+#ifdef CONFIG_AUTONUMA
+	spinlock_t autonuma_lock;
+	struct list_head autonuma_migrate_head[MAX_NUMNODES];
+	unsigned long autonuma_nr_migrate_pages;
+	wait_queue_head_t autonuma_knuma_migrated_wait;
+#endif
 } pg_data_t;
 
 #define node_present_pages(nid)	(NODE_DATA(nid)->node_present_pages)