From 8177a420ed7c16c171ed3c3aec5b0676db38c247 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Fri, 23 Mar 2012 20:56:34 +0100 Subject: mm: numa: Structures for Migrate On Fault per NUMA migration rate limiting This defines the per-node data used by Migrate On Fault in order to rate limit the migration. The rate limiting is applied independently to each destination node. Signed-off-by: Andrea Arcangeli Signed-off-by: Mel Gorman --- include/linux/mmzone.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'include/linux/mmzone.h') diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index a23923ba8263..28601fdfcdb2 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -717,6 +717,19 @@ typedef struct pglist_data { struct task_struct *kswapd; /* Protected by lock_memory_hotplug() */ int kswapd_max_order; enum zone_type classzone_idx; +#ifdef CONFIG_NUMA_BALANCING + /* + * Lock serializing the per destination node AutoNUMA memory + * migration rate limiting data. + */ + spinlock_t numabalancing_migrate_lock; + + /* Rate limiting time interval */ + unsigned long numabalancing_migrate_next_window; + + /* Number of pages migrated during the rate limiting time interval */ + unsigned long numabalancing_migrate_nr_pages; +#endif } pg_data_t; #define node_present_pages(nid) (NODE_DATA(nid)->node_present_pages) -- cgit v1.2.1