Messages in this thread | | | Date | Wed, 24 Jul 2002 18:39:18 -0700 | From | george anzinger <> | Subject | Re: [PATCH] updated low-latency zap_page_range |
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Linus Torvalds wrote: > > On 24 Jul 2002, Robert Love wrote: > > > > if (preempt_count() == 1 && need_resched()) > > > > Then we get "if (0 && ..)" which should hopefully be evaluated away. > > I think preempt_count() is not unconditionally 0 for non-preemptible > kernels, so I don't think this is a compile-time constant. > > That may be a bug in preempt_count(), of course. > Didn't we just put bh_count and irq_count in the same word??? -- George Anzinger george@mvista.com High-res-timers: http://sourceforge.net/projects/high-res-timers/ Real time sched: http://sourceforge.net/projects/rtsched/ Preemption patch: http://www.kernel.org/pub/linux/kernel/people/rml - 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/
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