Messages in this thread |  | | Date | Tue, 18 Sep 2001 12:05:59 +0530 | From | Dipankar Sarma <> | Subject | Re: 2.4.10pre10aa1 (first spin to the vm rewrite included) |
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In article <20010917180914.I713@athlon.random> andrea@suse.de wrote: > Some of the the main features of 2.4.10pre10aa1 are:
> o rcu core included (thought it will be rewritten, I agreed with > Dipankar that the per-cpu scheduling sequence number seems > the best approch, such number can serve also as a statistic > to usespace infact, it is very similar to Rusty's patch but it > doesn't add any branch to the schedule fast path, he's rewriting > the patch at the moment and I'll include it in the next release)
Sorry, in the latest patch I folded the per-cpu context switch counter into per-cpu counters for other quiescent states - user mode code and idle loop in order to save on an extra compare making a single counter :-) So, it is not much of a user space statistics anymore.
I can put that counter back, but I think eventually it may anyway make sense to start using per-cpu statistics counters. As a matter of fact we are working on a framework to support these. If we do use per-cpu statistics counters later, RCU can make use of the per-cpu context switch statistics counter.
Thanks Dipankar -- Dipankar Sarma <dipankar@in.ibm.com> Project: http://lse.sourceforge.net Linux Technology Center, IBM Software Lab, Bangalore, India. - 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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