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Synchronization idioms

disable_preemption Atomic Prevent involuntary context switch on the current CPU. Doesn't affect interrupts
cli Atomic Prevent all asynchronous activity in the current CPU
spin_lock Atomic Prevent access from other CPU. Imply disable_preemption to avoid deadlock. Need cli to avoid deadlock with interrupt context
mutex_lock May sleep Prevent access from any other context. May not be used in atomic context
etc/users/jcmvbkbc/phantom/locking-idioms.txt · Last modified: 2016/08/08 20:53 by kel