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    SubjectRe: Fw: RCU boot debug patch
    On Wed, Jul 20, 2011 at 09:23:06PM +0530, RKK wrote:
    > Hi Paul
    >
    > >>
    > >> On Wed, Jul 20, 2011 at 4:11 AM, Paul E. McKenney
    > >> <paulmck@linux.vnet.ibm.com> wrote:
    > >> > Hello, Julie and Ravi,
    > >> >
    > >> > Although we arrived at a patch that worked for both of you, we never did
    > >> > identify exactly which RCU callback (or other issue) that was causing
    > >> > the problem.  It would be good to do this in case there is some other
    > >> > problem lurking that might bite us in the future.  Mingming has therefore
    > >> > put together the following diagnostic patch which should identify the
    > >> > callbacks, please see below.
    > >> >
    > >> > So could you please run this and let us know what you find?  There should
    > >> > at least be a message for artificial_callback().
    > >> >
    > >>
    > >>  Do i need to  apply this patch on today's Linus master or on -rc7 ?
    > >
    > > Please do not use -rc7, as that would reproduce your hang.  Linus master
    > > tree would be best, but -rc7 with the fix applied would work fine as well.
    > >
    >
    > Ok. will apply against Linus Master tree and get back to you sometime
    > later tonight.

    Thank you, Ravi!

    Thanx, Paul
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