home *** CD-ROM | disk | FTP | other *** search
- /*
- * 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 <linux/sched.h>
- #include <linux/delay.h>
- #include <linux/reboot.h>
- #include <linux/init.h>
- #include <linux/sysrq.h>
- #include <linux/interrupt.h>
-
- #ifdef __alpha__
- #include <asm/machvec.h>
- #endif
-
- asmlinkage void sys_sync(void); /* it's really int */
- extern void unblank_console(void);
- extern int C_A_D;
-
- int panic_timeout = 0;
-
- void __init 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 if (in_interrupt())
- printk(KERN_EMERG "In interrupt handler - not syncing\n");
- else
- sys_sync();
-
- unblank_console();
-
- #ifdef __SMP__
- smp_send_stop();
- #endif
- if (panic_timeout > 0)
- {
- /*
- * 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);
- mdelay(panic_timeout*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
- #ifdef __alpha__
- if (alpha_using_srm)
- halt();
- #endif
- sti();
- for(;;) {
- CHECK_EMERGENCY_SYNC
- }
- }
-