Messages in this thread | | | Date | Wed, 1 Feb 2012 10:40:45 -0800 | From | "Paul E. McKenney" <> | Subject | Re: [v7 0/8] Reduce cross CPU IPI interference |
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On Wed, Feb 01, 2012 at 06:35:22PM +0100, Peter Zijlstra wrote: > On Sun, 2012-01-29 at 10:25 +0200, Gilad Ben-Yossef wrote: > > > > If this is of interest, I keep a list tracking global IPI and global > > task schedulers sources in the core kernel here: > > https://github.com/gby/linux/wiki. > > You can add synchronize_.*_expedited() to the list, it does its best to > bash the entire machine in order to try and make RCU grace periods > happen fast.
I have duly added "Make synchronize_sched_expedited() avoid IPIing idle CPUs" to http://kernel.org/pub/linux/kernel/people/paulmck/rcutodo.html.
This should not be hard once I have built up some trust in the new RCU idle-detection code. It would also automatically apply to Frederic's dyntick-idle userspace work.
Thanx, Paul
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