diff options
Diffstat (limited to 'include/linux/vmalloc.h')
| -rw-r--r-- | include/linux/vmalloc.h | 34 |
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 */ |