Merge tag 'xtensa-next-20130710' of git://github.com/czankel/xtensa-linux

[cascardo/linux.git] / include / linux / mm.h

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 66d881f..f022460 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -25,11 +25,17 @@ struct file_ra_state;
 struct user_struct;
 struct writeback_control;
 
-#ifndef CONFIG_DISCONTIGMEM          /* Don't use mapnrs, do it properly */
+#ifndef CONFIG_NEED_MULTIPLE_NODES     /* Don't use mapnrs, do it properly */
 extern unsigned long max_mapnr;
+
+static inline void set_max_mapnr(unsigned long limit)
+{
+       max_mapnr = limit;
+}
+#else
+static inline void set_max_mapnr(unsigned long limit) { }
 #endif
 
-extern unsigned long num_physpages;
 extern unsigned long totalram_pages;
 extern void * high_memory;
 extern int page_cluster;
@@ -52,6 +58,9 @@ extern unsigned long sysctl_admin_reserve_kbytes;
 /* to align the pointer to the (next) page boundary */
 #define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE)
 
+/* test whether an address (unsigned long or pointer) is aligned to PAGE_SIZE */
+#define PAGE_ALIGNED(addr)     IS_ALIGNED((unsigned long)addr, PAGE_SIZE)
+
 /*
  * Linux kernel virtual memory manager primitives.
  * The idea being to have a "virtual" mm in the same way
@@ -142,12 +151,6 @@ extern unsigned int kobjsize(const void *objp);
 #define VM_STACK_FLAGS (VM_GROWSDOWN | VM_STACK_DEFAULT_FLAGS | VM_ACCOUNT)
 #endif
 
-#define VM_READHINTMASK                        (VM_SEQ_READ | VM_RAND_READ)
-#define VM_ClearReadHint(v)            (v)->vm_flags &= ~VM_READHINTMASK
-#define VM_NormalReadHint(v)           (!((v)->vm_flags & VM_READHINTMASK))
-#define VM_SequentialReadHint(v)       ((v)->vm_flags & VM_SEQ_READ)
-#define VM_RandomReadHint(v)           ((v)->vm_flags & VM_RAND_READ)
-
 /*
  * Special vmas that are non-mergable, non-mlock()able.
  * Note: mm/huge_memory.c VM_NO_THP depends on this definition.
@@ -1305,11 +1308,12 @@ extern void free_initmem(void);
 /*
  * Free reserved pages within range [PAGE_ALIGN(start), end & PAGE_MASK)
  * into the buddy system. The freed pages will be poisoned with pattern
- * "poison" if it's non-zero.
+ * "poison" if it's within range [0, UCHAR_MAX].
  * Return pages freed into the buddy system.
  */
-extern unsigned long free_reserved_area(unsigned long start, unsigned long end,
+extern unsigned long free_reserved_area(void *start, void *end,
                                        int poison, char *s);
+
 #ifdef CONFIG_HIGHMEM
 /*
  * Free a highmem page into the buddy system, adjusting totalhigh_pages
@@ -1318,10 +1322,8 @@ extern unsigned long free_reserved_area(unsigned long start, unsigned long end,
 extern void free_highmem_page(struct page *page);
 #endif
 
-static inline void adjust_managed_page_count(struct page *page, long count)
-{
-       totalram_pages += count;
-}
+extern void adjust_managed_page_count(struct page *page, long count);
+extern void mem_init_print_info(const char *str);
 
 /* Free the reserved page into the buddy system, so it gets managed. */
 static inline void __free_reserved_page(struct page *page)
@@ -1345,18 +1347,29 @@ static inline void mark_page_reserved(struct page *page)
 
 /*
  * Default method to free all the __init memory into the buddy system.
- * The freed pages will be poisoned with pattern "poison" if it is
- * non-zero. Return pages freed into the buddy system.
+ * The freed pages will be poisoned with pattern "poison" if it's within
+ * range [0, UCHAR_MAX].
+ * Return pages freed into the buddy system.
  */
 static inline unsigned long free_initmem_default(int poison)
 {
        extern char __init_begin[], __init_end[];
 
-       return free_reserved_area(PAGE_ALIGN((unsigned long)&__init_begin) ,
-                                 ((unsigned long)&__init_end) & PAGE_MASK,
+       return free_reserved_area(&__init_begin, &__init_end,
                                  poison, "unused kernel");
 }
 
+static inline unsigned long get_num_physpages(void)
+{
+       int nid;
+       unsigned long phys_pages = 0;
+
+       for_each_online_node(nid)
+               phys_pages += node_present_pages(nid);
+
+       return phys_pages;
+}
+
 #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
 /*
  * With CONFIG_HAVE_MEMBLOCK_NODE_MAP set, an architecture may initialise its