Messages in this thread | | | Date | Fri, 30 Dec 2005 09:00:32 +0100 | From | Ingo Molnar <> | Subject | Re: [patch] latency tracer, 2.6.15-rc7 |
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* Lee Revell <rlrevell@joe-job.com> wrote:
> It seems that debug_smp_processor_id is being called a lot, even > though I have a UP config, which I didn't see with the -rt kernel:
do you have CONFIG_DEBUG_PREEMPT enabled? (if yes then disable it)
> Was this optimized out on UP before?
no, because smp_processor_id() debugging is useful on UP too: it checks whether smp_processor_id() is every called with preemption enabled, and reports such bugs.
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