Messages in this thread | | | Date | Sat, 20 Nov 2004 18:45:18 +1100 | From | Nick Piggin <> | Subject | touch_nmi_watchdog (was: page fault scalability patch V11 [0/7]: overview) |
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Nick Piggin wrote:
>> (2) NMI's don't nest. There is no possibility of NMI's racing against >> themselves while the data is per-cpu. >> > > Your point was that touch_nmi_watchdog() which resets alert_counter, > is racy when resetting the counter of other CPUs. Yes it is racy. > It is also racy against the NMI on the _current_ CPU.
Hmm no I think you're right in that it is only a problem WRT the remote CPUs. However that would still be a problem, as the comment in i386 touch_nmi_watchdog attests. - 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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