Messages in this thread |  | | Date | Fri, 23 Aug 2002 14:45:33 +0900 | From | Kerenyi Gabor <> | Subject | Re: interrupt handler |
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8/23/2002 9:17:07 PM, "Richard B. Johnson" <root@chaos.analogic.com> wrote:
>On Fri, 23 Aug 2002, sanket rathi wrote: > >> hi, >> Can i use spin lock in the interrupt handler for a singlre processor >> machine. because books says u can not use locks but spin lock is some >> thing diffrent >> >> thanks in advance >> >> --Sanket >> --------- > >Interrupts default to OFF within an interrupt handler. Given this, >why would you use a spin-lock within the ISR on a single-processor >machine?
Because he would like to write a code that can be run on a computer with more than one CPU.
Anyway, do anybody know what kind of advantages/disadvantages I can get if I don't disable interrupts at all in my driver? Even if I have to use a circular buffer or anything else? Is it worth trying to find such a solution or is it a wasted time?
Gabor
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