On Tue, 1 Oct 2002, Kai Germaschewski wrote:
> I'm possibly messing things up here, but doesn't it generally make more
> sense to convert tq_immediate users to tasklets instead of work queues?
>
> tq_immediate users do not need process context, and one use I'm familiar
> with is basically doing bottom half interrupt processing, e.g. in lots
> of places in the ISDN code. Introducing a context switch for no obvious
> gain there seems rather pointless to me?
>
> The same may be true for the tq_timer users as well?
the main reason was that it was easier to convert everything (even old-BH
style code) that did deferred processing to workqueues than to tasklets -
since a fair chunk of deferred processing needs process context. Another
reason is that generally it's easier to handle overload situations if the
work is done in process contexts. But i agree, for things where it really
matters performance-wise, introducing a tasklet should be the next step.
Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Mon Oct 07 2002 - 22:00:28 EST