Is it a performance enhancer to use the following construction when attempting
to allocate a spin lock?
current = KeGetCurrentIrql()
if current == DISPATCH_LEVEL
KeAcquireSpinLockAtDpcLevel(…)
else
KeAcquireSpinLock(…)
similarly
if current == DISPATCH_LEVEL
KeReleaseSpinLockFromDpcLevel(…)
else
KeReleaseSpinLock(…)
Thanks.
Neil