Dawson Engler wrote:
>
> > Is it difficult to split it into "interrupts disabled" and "spin lock
> > held"?
>
Is it difficult to test for matching spinlock pairs such as
spin_lock_irq/spin_unlock_irq. Sometimes a spin_lock_irq is followed by
a spin_unlock and a separate interrupt re-enable. This sort of usage,
while not strictly wrong, does make it hard to use the spin_lock/unlock
macros to do preemption. This said, pairing information would be very
helpful. Note, there are several flavors here, not just the one I
cited.
George
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This archive was generated by hypermail 2b29 : Fri Mar 23 2001 - 21:00:14 EST