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/*
* linux/kernel/panic.c
*
* Copyright (C) 1991, 1992 Linus Torvalds
*/
/*
* This function is used through-out the kernel (including mm and fs)
* to indicate a major problem.
*/
#include <stdarg.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/delay.h>
#include <linux/smp.h>
#include <linux/reboot.h>
#include <linux/init.h>
#include <linux/sysrq.h>
#include <asm/sgialib.h>
asmlinkage void sys_sync(void); /* it's really int */
extern void unblank_console(void);
extern int C_A_D;
int panic_timeout = 0;
__initfunc(void panic_setup(char *str, int *ints))
{
if (ints[0] == 1)
panic_timeout = ints[1];
}
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();
#ifdef __SMP__
smp_message_pass(MSG_ALL_BUT_SELF, MSG_STOP_CPU, 0, 0);
#endif
unblank_console();
if (panic_timeout > 0)
{
int i;
/*
* Delay timeout seconds before rebooting the machine.
* We can't use the "normal" timers since we just panicked..
*/
printk(KERN_EMERG "Rebooting in %d seconds..",panic_timeout);
for(i = 0; i < (panic_timeout*1000); i++)
udelay(1000);
/*
* Should we run the reboot notifier. For the moment Im
* choosing not too. It might crash, be corrupt or do
* more harm than good for other reasons.
*/
machine_restart(NULL);
}
#ifdef __sparc__
printk("Press L1-A to return to the boot prom\n");
#endif
sti();
for(;;) {
CHECK_EMERGENCY_SYNC
}
}
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