kernel/panic.c

/*
 *  linux/kernel/panic.c
 *
 *  Copyright (C) 1991, 1992  Linus Torvalds
 */

/*
 * This function is used through-out the kernel (includeinh mm and fs)
 * to indicate a major problem.
 */
#include <stdarg.h>

#include <linux/kernel.h>
#include <linux/sched.h>

asmlinkage void sys_sync(void);    /* it's really int */

extern int vsprintf(char * buf, const char * fmt, va_list args);

//内核出错的处理
NORET_TYPE void panic(const char * fmt, ...)
{
    static char buf[1024];
    va_list args;

va_start(args, fmt);
    vsprintf(buf, fmt, args);
    va_end(args);
    printk(KERN_EMERG "Kernel panic: %s\n",buf);
    if (current == task[0])
        printk(KERN_EMERG "In swapper task - not syncing\n");
    else
        sys_sync();
    for(;;);
}