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Date: Wed, 27 Jan 2010 11:00:22 +0100 From: Andi Kleen <andi@...stfloor.org> To: Peter Zijlstra <peterz@...radead.org> Cc: Andi Kleen <andi@...stfloor.org>, "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>, linux-kernel@...r.kernel.org, mingo@...e.hu, laijs@...fujitsu.com, dipankar@...ibm.com, akpm@...ux-foundation.org, mathieu.desnoyers@...ymtl.ca, josh@...htriplett.org, dvhltc@...ibm.com, niv@...ibm.com, tglx@...utronix.de, rostedt@...dmis.org, Valdis.Kletnieks@...edu, dhowells@...hat.com Subject: Re: [PATCH RFC tip/core/rcu] accelerate grace period if last non-dynticked CPU On Wed, Jan 27, 2010 at 10:50:50AM +0100, Peter Zijlstra wrote: > On Wed, 2010-01-27 at 10:43 +0100, Andi Kleen wrote: > > > > Can't you simply check that at runtime then? > > > > if (num_possible_cpus() > 20) > > ... > > > > BTW the new small is large. This years high end desktop PC will come with > > upto 12 CPU threads. It would likely be challenging to find a good > > number for 20 that holds up with the future. > > If only scalability were that easy :/ See the rest of my email... I see you're already suffering from "Linus disease" ... only reading the first paragraph/sentence in the email. -Andi -- ak@...ux.intel.com -- Speaking for myself only. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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