LCOV - code coverage report
Current view: top level - lkbce/include/linux - vmalloc.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1 1 100.0 %
Date: 2017-01-25 Functions: 0 0 -

          Line data    Source code
       1             : #ifndef _LINUX_VMALLOC_H
       2             : #define _LINUX_VMALLOC_H
       3             : 
       4             : #include <linux/spinlock.h>
       5             : #include <linux/init.h>
       6             : #include <asm/page.h>             /* pgprot_t */
       7             : 
       8             : struct vm_area_struct;          /* vma defining user mapping in mm_types.h */
       9             : 
      10             : /* bits in flags of vmalloc's vm_struct below */
      11             : #define VM_IOREMAP      0x00000001      /* ioremap() and friends */
      12             : #define VM_ALLOC        0x00000002      /* vmalloc() */
      13             : #define VM_MAP          0x00000004      /* vmap()ed pages */
      14             : #define VM_USERMAP      0x00000008      /* suitable for remap_vmalloc_range */
      15             : #define VM_VPAGES       0x00000010      /* buffer for pages was vmalloc'ed */
      16             : /* bits [20..32] reserved for arch specific ioremap internals */
      17             : 
      18             : /*
      19             :  * Maximum alignment for ioremap() regions.
      20             :  * Can be overriden by arch-specific value.
      21             :  */
      22             : #ifndef IOREMAP_MAX_ORDER
      23             : #define IOREMAP_MAX_ORDER       (7 + PAGE_SHIFT)        /* 128 pages */
      24             : #endif
      25             : 
      26             : struct vm_struct {
      27             :         struct vm_struct        *next;
      28             :         void                    *addr;
      29             :         unsigned long           size;
      30             :         unsigned long           flags;
      31             :         struct page             **pages;
      32             :         unsigned int            nr_pages;
      33             :         unsigned long           phys_addr;
      34             :         void                    *caller;
      35             : };
      36             : 
      37             : /*
      38             :  *      Highlevel APIs for driver use
      39             :  */
      40             : extern void vm_unmap_ram(const void *mem, unsigned int count);
      41             : extern void *vm_map_ram(struct page **pages, unsigned int count,
      42             :                                 int node, pgprot_t prot);
      43             : extern void vm_unmap_aliases(void);
      44             : 
      45             : #ifdef CONFIG_MMU
      46             : extern void __init vmalloc_init(void);
      47             : #else
      48             : static inline void vmalloc_init(void)
      49             : {
      50             : }
      51             : #endif
      52             : 
      53             : extern void *vmalloc(unsigned long size);
      54             : extern void *vmalloc_user(unsigned long size);
      55             : extern void *vmalloc_node(unsigned long size, int node);
      56             : extern void *vmalloc_exec(unsigned long size);
      57             : extern void *vmalloc_32(unsigned long size);
      58             : extern void *vmalloc_32_user(unsigned long size);
      59             : extern void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot);
      60             : extern void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask,
      61             :                                 pgprot_t prot);
      62             : extern void vfree(const void *addr);
      63             : 
      64             : extern void *vmap(struct page **pages, unsigned int count,
      65             :                         unsigned long flags, pgprot_t prot);
      66             : extern void vunmap(const void *addr);
      67             : 
      68             : extern int remap_vmalloc_range(struct vm_area_struct *vma, void *addr,
      69             :                                                         unsigned long pgoff);
      70             : void vmalloc_sync_all(void);
      71             :  
      72             : /*
      73             :  *      Lowlevel-APIs (not for driver use!)
      74             :  */
      75             : 
      76             : static inline size_t get_vm_area_size(const struct vm_struct *area)
      77             : {
      78             :         /* return actual size without guard page */
      79             :         return area->size - PAGE_SIZE;
      80             : }
      81             : 
      82             : extern struct vm_struct *get_vm_area(unsigned long size, unsigned long flags);
      83             : extern struct vm_struct *get_vm_area_caller(unsigned long size,
      84             :                                         unsigned long flags, void *caller);
      85             : extern struct vm_struct *__get_vm_area(unsigned long size, unsigned long flags,
      86             :                                         unsigned long start, unsigned long end);
      87             : extern struct vm_struct *__get_vm_area_caller(unsigned long size,
      88             :                                         unsigned long flags,
      89             :                                         unsigned long start, unsigned long end,
      90             :                                         void *caller);
      91             : extern struct vm_struct *get_vm_area_node(unsigned long size,
      92             :                                           unsigned long flags, int node,
      93             :                                           gfp_t gfp_mask);
      94             : extern struct vm_struct *remove_vm_area(const void *addr);
      95             : 
      96             : extern int map_vm_area(struct vm_struct *area, pgprot_t prot,
      97             :                         struct page ***pages);
      98             : extern int map_kernel_range_noflush(unsigned long start, unsigned long size,
      99             :                                     pgprot_t prot, struct page **pages);
     100             : extern void unmap_kernel_range_noflush(unsigned long addr, unsigned long size);
     101             : extern void unmap_kernel_range(unsigned long addr, unsigned long size);
     102             : 
     103             : /* Allocate/destroy a 'vmalloc' VM area. */
     104             : extern struct vm_struct *alloc_vm_area(size_t size);
     105             : extern void free_vm_area(struct vm_struct *area);
     106             : 
     107             : /* for /dev/kmem */
     108             : extern long vread(char *buf, char *addr, unsigned long count);
     109             : extern long vwrite(char *buf, char *addr, unsigned long count);
     110             : 
     111             : /*
     112             :  *      Internals.  Dont't use..
     113             :  */
     114             : extern rwlock_t vmlist_lock;
     115             : extern struct vm_struct *vmlist;
     116             : extern __init void vm_area_register_early(struct vm_struct *vm, size_t align);
     117             : 
     118             : struct vm_struct **pcpu_get_vm_areas(const unsigned long *offsets,
     119             :                                      const size_t *sizes, int nr_vms,
     120             :                                      size_t align, gfp_t gfp_mask);
     121             : 
     122             : void pcpu_free_vm_areas(struct vm_struct **vms, int nr_vms);
     123           1 : 
     124             : #endif /* _LINUX_VMALLOC_H */

Generated by: LCOV version 1.10