yodaiken@fsmlabs.com wrote:
> As far as I can tell,
> only place need_resched is set is in the scheduler and the sched idle loop.
> This is what makes Ingo's latency patch less dangerous: need_resched is hard
> to set. Your scenario requires that an interrupt routine, interrupting
> kernel mode, set needs_resched. Where does this happen?
Whenever an interrupt wakes up a process. Alan says it's uncommon, but
it depends what devices you're using. Some device drivers do it for all
interrupts, if a process is waiting for some information from the device.
-- Jamie
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