Messages in this thread | | | Date | Wed, 10 Nov 2004 18:06:15 +0100 | From | Ingo Molnar <> | Subject | Re: [patch] Real-Time Preemption, -RT-2.6.10-rc1-mm3-V0.7.23 |
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* Mark_H_Johnson@raytheon.com <Mark_H_Johnson@raytheon.com> wrote:
> OK. So maybe I didn't understand what you said previously. Now, if I > build to get maximum-latency wakeup values, I can't get the IRQ off or > preempt off timing and traces? If that's not true, how do I switch > between the different sampling methods?
you have to build another kernel for them. irqs-off and preempt-off timing can be mixed freely (and both can be enabled in the same kernel), but wakeup timing deserves its own .config space and since it's not mixable with the other two methods i didnt see much point in enabling all 3 at once with strange dependencies between them. Is this a big issue? Normally i think the wakeup timing is more than enough to get a feel of latencies, and if something specific is suspected the other ones can be turned on.
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