Re: [PATCH] improve spinlock debugging

[Nigel Gamble]

On Tue, 4 Dec 2001, george anzinger wrote:
>                               For example, preemption currently counts
> up on spin_lock and disable irq, counting the spin_lockirq twice.  In

That's not correct: we don't count it twice because we don't count
local_irq_disable etc., only the spin locks.  Because...

>                                               (Oh, and since the irq
> inhibits preemption all by itself, we don't need to count it either.)

...so we don't.

Nigel Gamble                                    [e-mail]
Mountain View, CA, USA.                         http://www.nrg.org/