| Date | Mon, 1 Jul 2013 08:31:50 -0700 | From | Josh Triplett <> | Subject | Re: [PATCH RFC nohz_full v2 2/7] nohz_full: Add rcu_dyntick data for scalable detection of all-idle state |
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On Fri, Jun 28, 2013 at 01:10:17PM -0700, Paul E. McKenney wrote: > From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> > > This commit adds fields to the rcu_dyntick structure that are used to > detect idle CPUs. These new fields differ from the existing ones in > that the existing ones consider a CPU executing in user mode to be idle, > where the new ones consider CPUs executing in user mode to be busy.
Can you explain, both in the commit messages and in the comments added by the next commit, *why* this code doesn't consider userspace a quiescent state?
- Josh Triplett
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