[QUESTION] The cost of local interrupt enable/disable


 Hello, guys.

I'm curious about the cost of local_irq_enable/disable()'s on variousarchitectures. I found a freebsd discussion thread by googling whichsays that each takes 3 cycles on i386 (very cheap), but for Pentium4,people are talking in the order of several hundreds cycles. Are thesecorrect? How about other architectures?


 TIA.

--
tejun
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