Re: [PATCH tip/core/rcu 0/10] Expedited-grace-period changes for 4.5

[Josh Triplett <josh@joshtriplett.org>]

On Fri, Dec 04, 2015 at 03:58:51PM -0800, Paul E. McKenney wrote:
> Hello!
> 
> This series contains follow-on cleanup changes to RCU's expedited
> grace-period functionality.  The patches in this series are as follows:
> 
> 1.	Short-circuit synchronize_sched_expedited() if there is only one CPU.
> 
> 2.	Update comment to clarify the role of ->expmaskinitnext.
> 
> 3.	Separate concerns by moving smp_mb() from rcu_seq_snap() to
> 	rcu_exp_gp_seq_snap().
> 
> 4.	Safe a few lines of code by inverting the sense of
> 	sync_rcu_exp_select_cpus() "if" statement.
> 
> 5.	Reduce expedited GP memory contention via per-CPU variables.
> 
> 6.	Get rid of (some) empty stall-warning messages by resolving
> 	stall-warning ties.
> 
> 7.	Add more diagnostics to expedited stall warning messages.
> 
> 8.	Add rcu_normal kernel parameter to suppress expediting for
> 	the benefit of aggressive real-time systems.
> 
> 9-10.	Allow expedited grace periods to be disabled just before init
> 	is spawned, allowing them to speed up boot without interfering
> 	with run-time real-time workloads.

This cover letter doesn't seem to match the patch series that shows up
as replies to it.  The patch series has 13 patches, numbered 01/13 to
13/13.  You sent a separate cover letter, not part of this thread, that
seems to match up.