init-mm.c

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#include <linux/mm_types.h>
#include <linux/rbtree.h>
#include <linux/rwsem.h>
#include <linux/spinlock.h>
#include <linux/list.h>
#include <linux/cpumask.h>

#include <linux/atomic.h>
#include <asm/pgtable.h>
#include <asm/mmu.h>

#ifndef INIT_MM_CONTEXT
#define INIT_MM_CONTEXT(name)
#endif

struct mm_struct init_mm = {
    .mm_rb      = RB_ROOT,
    .pgd        = swapper_pg_dir,
    .mm_users   = ATOMIC_INIT(2),
    .mm_count   = ATOMIC_INIT(1),
    .mmap_sem   = __RWSEM_INITIALIZER(init_mm.mmap_sem),
    .page_table_lock =  __SPIN_LOCK_UNLOCKED(init_mm.page_table_lock),
    .mmlist     = LIST_HEAD_INIT(init_mm.mmlist),
    INIT_MM_CONTEXT(init_mm)
};