init_task.c

内核linux2.4.20,可跟rtlinux3.2打补丁 组成实时linux系统,编译内核

#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/init.h>

#include <asm/uaccess.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>

static struct fs_struct init_fs = INIT_FS;
static struct files_struct init_files = INIT_FILES;
static struct signal_struct init_signals = INIT_SIGNALS;
struct mm_struct init_mm = INIT_MM(init_mm);

/*
 * Initial task structure.
 *
 * We need to make sure that this is 16384-byte aligned due to the
 * way process stacks are handled. This is done by having a special
 * "init_task" linker map entry..
 */
union task_union init_task_union 
	__attribute__((section("init_task"), aligned(4096))) = { INIT_TASK(init_task_union.task) };

unsigned long swapper_pg_dir[PTRS_PER_PGD] __attribute__ ((aligned(4096))) = { 0, };
#ifdef __LP64__
unsigned long pmd0[PTRS_PER_PMD] __attribute__ ((aligned(4096))) = { 0, };
#endif
unsigned long pg0[PT_INITIAL * PTRS_PER_PTE] __attribute__ ((aligned(4096))) = { 0, };