__static_call_key
unsigned long s_key = __static_call_key(site);
return (void *)(__static_call_key(site) & ~STATIC_CALL_SITE_FLAGS);
return __static_call_key(site) & STATIC_CALL_SITE_INIT;
return __static_call_key(site) & STATIC_CALL_SITE_TAIL;
site->key = (__static_call_key(site) | STATIC_CALL_SITE_INIT) -