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 <asm/atomic.h>
   9 #include <asm/pgtable.h>
  10
  11 #ifdef CONFIG_X86_XEN
  12 #define swapper_pg_dir ((pgd_t *)NULL)
  13 #endif
  14
  15 struct mm_struct init_mm = {
  16         .mm_rb          = RB_ROOT,
  17         .pgd            = swapper_pg_dir,
  18         .mm_users       = ATOMIC_INIT(2),
  19         .mm_count       = ATOMIC_INIT(1),
  20         .mmap_sem       = __RWSEM_INITIALIZER(init_mm.mmap_sem),
  21         .page_table_lock =  __SPIN_LOCK_UNLOCKED(init_mm.page_table_lock),
  22         .mmlist         = LIST_HEAD_INIT(init_mm.mmlist),
  23         .cpu_vm_mask    = CPU_MASK_ALL,
  24 };