Messages in this thread | | | Date | Fri, 26 Mar 2010 09:59:29 +0000 | From | Alan Cox <> | Subject | Re: [patch 0/2] Run interrupt handlers always with interrupts disabled |
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> As long as it's rare (which it is) i dont see a problem: you can enable > interrupts in the handler by using local_irq_enable(), like the IDE PIO > drivers do. That way it's documented a bit better as well, because it shows > the precise source of the latency, with a big comment explaining it, etc.
I don't think it's as rare as you think particularly in embedded, and the moment you start explicitly using local_irq_enable() you've simply moved the underlying problem back and made it far harder to grep for.
Alan
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