[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: sharing data (can ISR be pre-empted???)



Ed Co wrote:

You seem to be contradicting here. If ISR does not
have a context then how can it get preempted by a
kernel thread(on 2.6 or anywehere else???) Are you
talking about the Timesys kernel here; they have
changed the kernel to run an ISR in a process context.
In such a case you can preempt the ISR but on regular
kernels this is not possible.


Yes i said i made a mistake :) ISR cannot be preempted.


-- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/