(cc's added) On Fri, 23 Nov 2007 20:28:41 -0800 (PST) [EMAIL PROTECTED] wrote:
> Build kernel-2.6.24-rc3. pmi_watchdog can not reset the kernel panic > machine. The watchdog can never to record panic information to IPMI SEL. > > 1. I disable auto reset when kernel panic by echo "0" > > /proc/sys/kernel/panic > > 2. modprobe ipmi_watchdog timeout=120 action=reset > > 3. Load a driver, the driver will call panic() when ioctl to call into > the driver. > > 4. By ioctl call into the driver, panic the system. > > in wdog_panic_handler, I printk "ipmi_watchdog_state=WDOG_TIMEOUT_NONE" > so, the watchdog can never to record panic information to IPMI SEL. > > > static int wdog_panic_handler(struct notifier_block *this, > unsigned long event, > void *unused) > { > static int panic_event_handled = 0; > > /* On a panic, if we have a panic timeout, make sure to extend > the watchdog timer to a reasonable value to complete the > panic, if the watchdog timer is running. Plus the > pretimeout is meaningless at panic time. */ > if (watchdog_user && !panic_event_handled && > ipmi_watchdog_state != WDOG_TIMEOUT_NONE) { > /* Make sure we do this only once. */ > panic_event_handled = 1; > > timeout = 255; > pretimeout = 0; > panic_halt_ipmi_set_timeout(); > } > > return NOTIFY_OK; > } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/