KeReleaseSpinLockFromDpcLevel

VOID
    KeReleaseSpinLockFromDpcLevel(
        IN PKSPIN_LOCK  SpinLock
        );

KeReleaseSpinLockFromDpcLevel releases an executive spin lock.

Parameters

SpinLock

Points to an executive spin lock for which the caller provides the storage.

Comments

Drivers call KeReleaseSpinLockFromDpcLevel to release a spin lock acquired by calling KeAcquireSpinLockAtDpcLevel.

It is an error to call KeReleaseSpinLockFromDpcLevel if the given spin lock was acquired by calling KeAcquireSpinLock because the caller�s original IRQL is not restored, which can cause deadlocks or fatal page faults.

Callers of KeReleaseSpinLockAtDpcLevel must be running at IRQL DISPATCH_LEVEL.

See Also

KeAcquireSpinLock, KeAcquireSpinLockAtDpcLevel, KeReleaseSpinLock