Messages in this thread | | | Date | Fri, 24 May 2002 00:02:11 +0200 | From | Pavel Machek <> | Subject | swsusp and Multithreaded core dumps for the 2.5.17 kernel was ... .RE: PATCH Multithreaded... |
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Hi!
> I don't understand what lock problems software suspend has to worry about so > I cannot comment. > > However; your design has ALL the processes getting suspended. To use the > phantom run queue and migrate them all to it, even with semaphore locks, > makes good sense to me.
That can not be done, because I'll need to do write-to-swapspace with those processes frozen, and if they hold some semaphores, that may not be possible.
> This would allow the software suspend to work with RT processes and SMP > systems as well. Further such a feature "could" enable a type of > warm-swapping of hardware to a large system.
I believe it should work with RT as-is. SMP is another issue, I'll probably wait for hotplug-cpu patches for that. (I do not want to save state of secondary cpu's). Pavel -- Casualities in World Trade Center: ~3k dead inside the building, cryptography in U.S.A. and free speech in Czech Republic. - 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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