1 files changed, 32 insertions, 2 deletions

diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 6071e911c7f4..7d5773a99f20 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -3,7 +3,9 @@
 
 #include <linux/spinlock.h>
 #include <linux/init.h>
+#include <linux/list.h>
 #include <asm/page.h>           /* pgprot_t */
+#include <linux/rbtree.h>
 
 struct vm_area_struct;          /* vma defining user mapping in mm_types.h */
 
@@ -35,6 +37,17 @@ struct vm_struct {
         const void              *caller;
 };
 
+struct vmap_area {
+        unsigned long va_start;
+        unsigned long va_end;
+        unsigned long flags;
+        struct rb_node rb_node;         /* address sorted rbtree */
+        struct list_head list;          /* address sorted list */
+        struct list_head purge_list;    /* "lazy purge" list */
+        struct vm_struct *vm;
+        struct rcu_head rcu_head;
+};
+
 /*
  *      Highlevel APIs for driver use
  */
@@ -130,8 +143,7 @@ extern long vwrite(char *buf, char *addr, unsigned long count);
 /*
  *      Internals.  Dont't use..
  */
-extern rwlock_t vmlist_lock;
-extern struct vm_struct *vmlist;
+extern struct list_head vmap_area_list;
 extern __init void vm_area_add_early(struct vm_struct *vm);
 extern __init void vm_area_register_early(struct vm_struct *vm, size_t align);
 
@@ -158,4 +170,22 @@ pcpu_free_vm_areas(struct vm_struct **vms, int nr_vms)
 # endif
 #endif
 
+struct vmalloc_info {
+        unsigned long   used;
+        unsigned long   largest_chunk;
+};
+
+#ifdef CONFIG_MMU
+#define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START)
+extern void get_vmalloc_info(struct vmalloc_info *vmi);
+#else
+
+#define VMALLOC_TOTAL 0UL
+#define get_vmalloc_info(vmi)                   \
+do {                                            \
+        (vmi)->used = 0;                        \
+        (vmi)->largest_chunk = 0;               \
+} while (0)
+#endif
+
 #endif /* _LINUX_VMALLOC_H */