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    SubjectRe: rcu_preempt self-detected stall on CPU from 4.5-rc3, since 3.17
    On Sun, Mar 27, 2016 at 10:53:18PM +0200, Peter Zijlstra wrote:
    > On Sun, Mar 27, 2016 at 08:40:18AM -0700, Paul E. McKenney wrote:
    > > Oh, and the patch I am running with is below. I am running x86, and so
    > > some other architectures would of course need the corresponding patch
    > > on that architecture.
    >
    > > -#define TIF_POLLING_NRFLAG 21 /* idle is polling for TIF_NEED_RESCHED */
    >
    > Also note that ARM (v7) which Ross is running doesn't have this to begin
    > with.

    He might well be seeing some other bug, then. Reinette might be instead
    seeing time-synchronization issues, perhaps that is also Ross's problem.

    Or maybe there is more than one bug. ;-)

    Thanx, Paul

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