LXR linux/arch/arm/include/asm/mmu.h

   1#ifndef __ARM_MMU_H
   2#define __ARM_MMU_H
   3
   4#ifdef CONFIG_MMU
   5
   6typedef struct {
   7#ifdef CONFIG_CPU_HAS_ASID
   8        atomic64_t      id;
   9#else
  10        int             switch_pending;
  11#endif
  12        unsigned int    vmalloc_seq;
  13        unsigned long   sigpage;
  14#ifdef CONFIG_VDSO
  15        unsigned long   vdso;
  16#endif
  17} mm_context_t;
  18
  19#ifdef CONFIG_CPU_HAS_ASID
  20#define ASID_BITS       8
  21#define ASID_MASK       ((~0ULL) << ASID_BITS)
  22#define ASID(mm)        ((unsigned int)((mm)->context.id.counter & ~ASID_MASK))
  23#else
  24#define ASID(mm)        (0)
  25#endif
  26
  27#else
  28
  29/*
  30 * From nommu.h:
  31 *  Copyright (C) 2002, David McCullough <davidm@snapgear.com>
  32 *  modified for 2.6 by Hyok S. Choi <hyok.choi@samsung.com>
  33 */
  34typedef struct {
  35        unsigned long   end_brk;
  36} mm_context_t;
  37
  38#endif
  39
  40#endif
  41