單項選擇題以報告消息,必須立即采取措施的日志級別,調(diào)用printk函數(shù)的正確命令式()

A.printk(KERN_ALERT"badjob!\n")
B.printk(KERN_WARNING,"badjob!\n")
C.printk(<1>"badjob!\n")
D.printk(<4>,"badjob!\n")


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