It's not that bad; if userspace is running, the cpu isn't idle, so there isn't the motivation to go tickless on that cpu. In other words, if every cpu has suspended ticks, then no cpu can be running stuff that needs to look at this page.
If I read the patch correctly, none of those legacy RTC ticks can ever be suspended though? Segher - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] 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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