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    SubjectRe: [v7 0/8] Reduce cross CPU IPI interference
    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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