Linux kernel 笔记 (54)——如何选择“spinlock”或“mutex”

ELDD中提到如何选择spinlockmutex

If the critical section needs to sleep, you have no choice but to use a mutex. It’s illegal to schedule,preempt, or sleep on a wait queue after acquiring a spinlock.

Because mutexes put the calling thread to sleep in the face of contention, you have no choice but to use spinlocks inside interrupt handlers.

 

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