>BTW: if you're idling, that doesn't mean that BH's are called before
>the next timer tick. AFAIK do_bottom_half() is only called on return
>from syscall/interrupt and when rescheduling.
>Waiting for the next timer tick would be horrible for latency,
>though.
If you queue the handler in the timer_bh OK, you are sure that the bh will
be marked (in the worst case after 1/HZ sec). All other bh has not timeout
so if you don' t mark it and there are not other code that mark it
_incidentally_ the bh handler will never run. This is what I understand
from the code.
Andrea[s] Arcangeli
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