#endif
#define MAX_ORDER_NR_PAGES (1 << (MAX_ORDER - 1))
+/*
+ * PAGE_ALLOC_COSTLY_ORDER is the order at which allocations are deemed
+ * costly to service. That is between allocation orders which should
+ * coelesce naturally under reasonable reclaim pressure and those which
+ * will not.
+ */
+#define PAGE_ALLOC_COSTLY_ORDER 3
+
struct free_area {
struct list_head free_list;
unsigned long nr_free;
struct per_cpu_pageset {
struct per_cpu_pages pcp[2]; /* 0: hot. 1: cold */
+#ifdef CONFIG_NUMA
+ s8 expire;
+#endif
#ifdef CONFIG_SMP
s8 stat_threshold;
s8 vm_stat_diff[NR_VM_ZONE_STAT_ITEMS];
* ---------------------------
* parisc, ia64, sparc <4G
* s390 <2G
- * arm26 <48M
* arm Various
* alpha Unlimited or 0-16MB.
*
*/
ZONE_HIGHMEM,
#endif
+ ZONE_MOVABLE,
MAX_NR_ZONES
};
+ defined(CONFIG_ZONE_DMA32) \
+ 1 \
+ defined(CONFIG_HIGHMEM) \
+ + 1 \
)
#if __ZONE_COUNT < 2
#define ZONES_SHIFT 0
#endif
};
+#ifdef CONFIG_NUMA
+/*
+ * Only custom zonelists like MPOL_BIND need to be filtered as part of
+ * policies. As described in the comment for struct zonelist_cache, these
+ * zonelists will not have a zlcache so zlcache_ptr will not be set. Use
+ * that to determine if the zonelists needs to be filtered or not.
+ */
+static inline int alloc_should_filter_zonelist(struct zonelist *zonelist)
+{
+ return !zonelist->zlcache_ptr;
+}
+#else
+static inline int alloc_should_filter_zonelist(struct zonelist *zonelist)
+{
+ return 0;
+}
+#endif /* CONFIG_NUMA */
+
#ifdef CONFIG_ARCH_POPULATES_NODE_MAP
struct node_active_region {
unsigned long start_pfn;
return (!!zone->present_pages);
}
+extern int movable_zone;
+
+static inline int zone_movable_is_highmem(void)
+{
+#if defined(CONFIG_HIGHMEM) && defined(CONFIG_ARCH_POPULATES_NODE_MAP)
+ return movable_zone == ZONE_HIGHMEM;
+#else
+ return 0;
+#endif
+}
+
static inline int is_highmem_idx(enum zone_type idx)
{
#ifdef CONFIG_HIGHMEM
- return (idx == ZONE_HIGHMEM);
+ return (idx == ZONE_HIGHMEM ||
+ (idx == ZONE_MOVABLE && zone_movable_is_highmem()));
#else
return 0;
#endif
static inline int is_highmem(struct zone *zone)
{
#ifdef CONFIG_HIGHMEM
- return zone == zone->zone_pgdat->node_zones + ZONE_HIGHMEM;
+ int zone_idx = zone - zone->zone_pgdat->node_zones;
+ return zone_idx == ZONE_HIGHMEM ||
+ (zone_idx == ZONE_MOVABLE && zone_movable_is_highmem());
#else
return 0;
#endif
int sysctl_min_slab_ratio_sysctl_handler(struct ctl_table *, int,
struct file *, void __user *, size_t *, loff_t *);
+extern int numa_zonelist_order_handler(struct ctl_table *, int,
+ struct file *, void __user *, size_t *, loff_t *);
+extern char numa_zonelist_order[];
+#define NUMA_ZONELIST_ORDER_LEN 16 /* string buffer size */
+
#include <linux/topology.h>
/* Returns the number of the current Node. */
#ifndef numa_node_id