> On May 25, 2015, at 10:02 PM, 김찬 <[email protected]> wrote:
>
> Hello,
>
> I see in the source (linux ver 3.3) that wake_up_interruptible function
> doesn't sleep so I used in it an ISR but I'm getting 'BUG:scheduling while
> atomic' message. (I'm not sure it's coming from this)
Remove it and check if the problem goes away.
> I'm looking for the exact cause but Is there any caveat when using
> wake_up_interruptible() in an ISR? (I found some drivers use it in ISR, some
> use it in work_struct)
>
I think there should be no problem using this api in isr context.
> I also read in
> http://www.slideshare.net/rampalliraj/tasklet-vs-work-queues?from_action=save
> that tasklet is not allowed to sleep but work is. (because tasklet is not
> in process context, but in bottom-half)
> I don't know if I have to move the wake_up_interruptible function to tasklet
> or work(queue) or even it matters to the current problem.
>
> Any help would be greatly appreciated.
What are you trying to achieve.
> Regards,
>
> Chan
>
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