Messages in this thread | | | Date | Tue, 8 Dec 1998 00:39:10 +0100 (CET) | From | MOLNAR Ingo <> | Subject | Re: bh order preserved? |
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On Mon, 7 Dec 1998, Frank Sweetser wrote:
> if i queue up several bottom half handler functions, are they guaranteed to > be executed in the same order in which they were queued up? ie, if i do > > queue_task(&first_queue, &tq_immediate); > queue_task(&second_queue, &tq_immediate); > > is first_queue guaranteed to be called before second_queue?
from include/linux/tqueue.h:
* - Bottom halfs are called in the reverse order that they were linked * into the list.
so it's LIFO. Makes some sense from the cache-usage point of view? (a 'fresher' bh is more likely to have state still cached) It's somewhat un-nice from the fairness point of view though.
-- mingo
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