A spinlock_irqsave question

Hi,

I have a question on spinlock_irqsave api. Am not sure if this is the
right place to ask.
Any help is highly appreciated.


let me know if my understanding is correct?



spinlock_irqsave()  <== Disables the IRQ?

                            <== No IRQs (that means no KB
interrupt,Interrupts from touch screen... etc..)



spinlock_irqrestore()


Is my understanding correct?
So the "time spend between spinlock_irqsave and spinlock_restore
should be very short?

For example there should not be something like this? Am i correct?


spinlock_irqsave()

mdelay(1000);


spinlock_irqrestore()




Also, what is meant by "spinlock_irqsave" disabled irq locally?


What is locally here?




Thanks,
Ryan
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