int bt_printk(const char *level, const char *fmt, ...);
#define BT_INFO(fmt, arg...) bt_printk(KERN_INFO, pr_fmt(fmt), ##arg)
int bt_printk(const char *level, const char *fmt, ...);
#define BT_INFO(fmt, arg...) bt_printk(KERN_INFO, pr_fmt(fmt), ##arg)