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


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