Merge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux...

[karo-tx-linux.git] / include / linux / mmzone.h

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 73b64a38b984a985259c468049cff50a6c44fdd3..c74092eebf5c9da5a052168b8885c75290efa2d2 100644 (file)
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -15,7 +15,7 @@
 #include <linux/seqlock.h>
 #include <linux/nodemask.h>
 #include <linux/pageblock-flags.h>
-#include <generated/bounds.h>
+#include <linux/page-flags-layout.h>
 #include <linux/atomic.h>
 #include <asm/page.h>
 
@@ -57,7 +57,9 @@ enum {
         */
        MIGRATE_CMA,
 #endif
+#ifdef CONFIG_MEMORY_ISOLATION
        MIGRATE_ISOLATE,        /* can't allocate from here */
+#endif
        MIGRATE_TYPES
 };
 
@@ -308,24 +310,6 @@ enum zone_type {
 
 #ifndef __GENERATING_BOUNDS_H
 
-/*
- * When a memory allocation must conform to specific limitations (such
- * as being suitable for DMA) the caller will pass in hints to the
- * allocator in the gfp_mask, in the zone modifier bits.  These bits
- * are used to select a priority ordered list of memory zones which
- * match the requested limits. See gfp_zone() in include/linux/gfp.h
- */
-
-#if MAX_NR_ZONES < 2
-#define ZONES_SHIFT 0
-#elif MAX_NR_ZONES <= 2
-#define ZONES_SHIFT 1
-#elif MAX_NR_ZONES <= 4
-#define ZONES_SHIFT 2
-#else
-#error ZONES_SHIFT -- too many zones configured adjust calculation
-#endif
-
 struct zone {
        /* Fields commonly accessed by the page allocator */
 
@@ -543,6 +527,26 @@ static inline int zone_is_oom_locked(const struct zone *zone)
        return test_bit(ZONE_OOM_LOCKED, &zone->flags);
 }
 
+static inline unsigned long zone_end_pfn(const struct zone *zone)
+{
+       return zone->zone_start_pfn + zone->spanned_pages;
+}
+
+static inline bool zone_spans_pfn(const struct zone *zone, unsigned long pfn)
+{
+       return zone->zone_start_pfn <= pfn && pfn < zone_end_pfn(zone);
+}
+
+static inline bool zone_is_initialized(struct zone *zone)
+{
+       return !!zone->wait_table;
+}
+
+static inline bool zone_is_empty(struct zone *zone)
+{
+       return zone->spanned_pages == 0;
+}
+
 /*
  * The "priority" of VM scanning is how much of the queues we will scan in one
  * go. A value of 12 for DEF_PRIORITY implies that we will scan 1/4096th of the
@@ -752,11 +756,17 @@ typedef struct pglist_data {
 #define nid_page_nr(nid, pagenr)       pgdat_page_nr(NODE_DATA(nid),(pagenr))
 
 #define node_start_pfn(nid)    (NODE_DATA(nid)->node_start_pfn)
+#define node_end_pfn(nid) pgdat_end_pfn(NODE_DATA(nid))
 
-#define node_end_pfn(nid) ({\
-       pg_data_t *__pgdat = NODE_DATA(nid);\
-       __pgdat->node_start_pfn + __pgdat->node_spanned_pages;\
-})
+static inline unsigned long pgdat_end_pfn(pg_data_t *pgdat)
+{
+       return pgdat->node_start_pfn + pgdat->node_spanned_pages;
+}
+
+static inline bool pgdat_is_empty(pg_data_t *pgdat)
+{
+       return !pgdat->node_start_pfn && !pgdat->node_spanned_pages;
+}
 
 #include <linux/memory_hotplug.h>
 
@@ -1053,8 +1063,6 @@ static inline unsigned long early_pfn_to_nid(unsigned long pfn)
  * PA_SECTION_SHIFT            physical address to/from section number
  * PFN_SECTION_SHIFT           pfn to/from section number
  */
-#define SECTIONS_SHIFT         (MAX_PHYSMEM_BITS - SECTION_SIZE_BITS)
-
 #define PA_SECTION_SHIFT       (SECTION_SIZE_BITS)
 #define PFN_SECTION_SHIFT      (SECTION_SIZE_BITS - PAGE_SHIFT)