Re: [RFC][PATCH 12/13] stop_machine: Remove lglock

[Peter Zijlstra]

On Wed, Jun 24, 2015 at 10:20:18AM -0700, Paul E. McKenney wrote:
> Except that I promised Ingo I would check for CPUs failing to schedule
> quickly enough, which means that I must track them individually rather
> than via a single counter...

You can track individual CPUs timestamps by extending the per-cpu
storage we use for the exp_stop_work.
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