Messages in this thread | | | Date | Sat, 20 Nov 2004 15:03:17 +1100 | From | Nick Piggin <> | Subject | Re: page fault scalability patch V11 [0/7]: overview |
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William Lee Irwin III wrote: > William Lee Irwin III wrote: > >>>Unprivileged triggers for full-tasklist scans are NMI oops material. > > > On Sat, Nov 20, 2004 at 02:37:04PM +1100, Nick Piggin wrote: > >>Hang on, let's come back to this... >>We already have unprivileged do-for-each-thread triggers in the proc >>code. It's in do_task_stat, even. Rss reporting would basically just >>involve one extra addition within that loop. >>So... hmm, I can't see a problem with it. > > > /proc/ triggering NMI oopses was a persistent problem even before that > code was merged. I've not bothered testing it as it at best aggravates it. >
It isn't a problem. If it ever became a problem then we can just touch the nmi oopser in the loop.
> And thread groups can share mm's. do_for_each_thread() won't suffice. >
I think it will be just fine. - 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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