HI... > Does the preempt_disable() disable preemption on all the processors or just the current processor? Fast check on schedule() code makes me believe it just disables the preemption on current processor which call preempt_disable(). regards, Mulyadi - To unsubscribe from this list: send the line "unsubscribe linux-newbie" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs