Messages in this thread |  | | Subject | Re: question on spinlocks | From | Robert Love <> | Date | 01 Sep 2002 18:11:12 -0400 |
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On Sun, 2002-09-01 at 18:02, Oliver Neukum wrote: > > > > No; spin_lock_irqsave/spin_unlock_irqrestore and spin_lock/spin_unlock > > > have to be used in matching pairs. > > > > If it was his least problem! He'll run straight into a "schedule w/IRQs > > disabled" bug. > > OK, how do I drop an irqsave spinlock if I don't have flags?
See my previous message.
Do not do what you are trying to do. Dropping a lock and calling schedule is fine. Ditto with the interrupt part.
But note:
- interrupts will be reenabled when you reschedule and still enabled when your task is finally running again.
- Since interrupts are going to magically restore, if you are worried about the state of interrupts previous to your function... you have a problem.
OK?
Robert Love
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