vmallocinfo: add caller information

[linux-2.6-omap-h63xx.git] / include / linux / vmalloc.h

diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 4b7ee83787c1fb18e24720743262910d0b464b58..364789aae9f335c44fa9e8b71848048134ab5ea2 100644 (file)
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -31,6 +31,7 @@ struct vm_struct {
        struct page             **pages;
        unsigned int            nr_pages;
        unsigned long           phys_addr;
+       void                    *caller;
 };
 
 /*
@@ -45,11 +46,11 @@ extern void *vmalloc_32_user(unsigned long size);
 extern void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot);
 extern void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask,
                                pgprot_t prot);
-extern void vfree(void *addr);
+extern void vfree(const void *addr);
 
 extern void *vmap(struct page **pages, unsigned int count,
                        unsigned long flags, pgprot_t prot);
-extern void vunmap(void *addr);
+extern void vunmap(const void *addr);
 
 extern int remap_vmalloc_range(struct vm_area_struct *vma, void *addr,
                                                        unsigned long pgoff);
@@ -58,16 +59,30 @@ void vmalloc_sync_all(void);
 /*
  *     Lowlevel-APIs (not for driver use!)
  */
+
+static inline size_t get_vm_area_size(const struct vm_struct *area)
+{
+       /* return actual size without guard page */
+       return area->size - PAGE_SIZE;
+}
+
 extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags);
+extern struct vm_struct *get_vm_area_caller(unsigned long size,
+                                       unsigned long flags, void *caller);
 extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
                                        unsigned long start, unsigned long end);
 extern struct vm_struct *get_vm_area_node(unsigned long size,
                                          unsigned long flags, int node,
                                          gfp_t gfp_mask);
-extern struct vm_struct *remove_vm_area(void *addr);
+extern struct vm_struct *remove_vm_area(const void *addr);
+
 extern int map_vm_area(struct vm_struct *area, pgprot_t prot,
                        struct page ***pages);
-extern void unmap_vm_area(struct vm_struct *area);
+extern void unmap_kernel_range(unsigned long addr, unsigned long size);
+
+/* Allocate/destroy a 'vmalloc' VM area. */
+extern struct vm_struct *alloc_vm_area(size_t size);
+extern void free_vm_area(struct vm_struct *area);
 
 /*
  *     Internals.  Dont't use..
@@ -75,4 +90,6 @@ extern void unmap_vm_area(struct vm_struct *area);
 extern rwlock_t vmlist_lock;
 extern struct vm_struct *vmlist;
 
+extern const struct seq_operations vmalloc_op;
+
 #endif /* _LINUX_VMALLOC_H */