mm/init-mm.c

   1 #include <linux/mm_types.h>
   2 #include <linux/rbtree.h>
   3 #include <linux/rwsem.h>
   4 #include <linux/spinlock.h>
   5 #include <linux/list.h>
   6 #include <linux/cpumask.h>
   7
   8 #include <linux/atomic.h>
   9 #include <asm/pgtable.h>
  10 #include <asm/mmu.h>
  11
  12 #ifndef INIT_MM_CONTEXT
  13 #define INIT_MM_CONTEXT(name)
  14 #endif
  15
  16 #ifdef CONFIG_X86_XEN
  17 #define swapper_pg_dir ((pgd_t *)NULL)
  18 #endif
  19
  20 struct mm_struct init_mm = {
  21         .mm_rb          = RB_ROOT,
  22         .pgd            = swapper_pg_dir,
  23         .mm_users       = ATOMIC_INIT(2),
  24         .mm_count       = ATOMIC_INIT(1),
  25         .mmap_sem       = __RWSEM_INITIALIZER(init_mm.mmap_sem),
  26         .page_table_lock =  __SPIN_LOCK_UNLOCKED(init_mm.page_table_lock),
  27         .mmlist         = LIST_HEAD_INIT(init_mm.mmlist),
  28         INIT_MM_CONTEXT(init_mm)
  29 };