1. 根目录:
2. drivers
3. watchdog
4. iTCO_vendor.h

/* iTCO Vendor Specific Support hooks */
#ifdef CONFIG_ITCO_VENDOR_SUPPORT
extern void iTCO_vendor_pre_start(struct resource *, unsigned int);
extern void iTCO_vendor_pre_stop(struct resource *);
extern void iTCO_vendor_pre_keepalive(struct resource *, unsigned int);
extern void iTCO_vendor_pre_set_heartbeat(unsigned int);
extern int iTCO_vendor_check_noreboot_on(void);
#else
#define iTCO_vendor_pre_start(acpibase, heartbeat)	{}
#define iTCO_vendor_pre_stop(acpibase)			{}
#define iTCO_vendor_pre_keepalive(acpibase, heartbeat)	{}
#define iTCO_vendor_pre_set_heartbeat(heartbeat)	{}
#define iTCO_vendor_check_noreboot_on()			1
				/* 1=check noreboot; 0=don't check */
#endif