Messages in this thread | | | Date | Tue, 14 Mar 2000 00:14:39 +0100 (CET) | From | Andrea Arcangeli <> | Subject | Re: new IRQ scalability changes in 2.3.48 |
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On Mon, 13 Mar 2000, Linus Torvalds wrote:
>We want to avoid having long latencies, and we can easily get that by just >allowing timer interrupts to schedule which we're in a big >"memcpy_to_user()" and we don't hold any kernel lock etc. No need to try >to be clever at lock release time - if we get a pending reschedule, we >might as well leave it pending, it's going to be serviced soon enough >anyway.
Agreed. That way we don't have any downside.
The kernel fully preemtable thing is fun thing and so I am trying to boot it (it's currently crashing at the first timer irq :), but actually I am not considering it for real life (or better "non real _time_ life" :).
Andrea
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