Re: [PATCH tip/core/rcu 0/3] Miscellaneous fixes for 3.16

From: Josh Triplett
Date: Mon Apr 28 2014 - 23:24:10 EST


On Mon, Apr 28, 2014 at 04:56:00PM -0700, Paul E. McKenney wrote:
> Hello!
>
> This series provides miscellaneous fixes:
>
> 1. Apply ACCESS_ONCE() to unprotected ->gp_flags accesses.
>
> 2. Fix typo in comment, courtesy of Liu Ping Fan.
>
> 3. Make RCU CPU stall warnings print grace-period numbers in
> signed format to improve readability of stall-warning output.
>
> 4. Make cpu_needs_another_gp() take future grace-period needs
> into account.
>
> 5. Remove unused ->preemptible field from the rcu_data structure,
> courtesty of Iulia Manda.
>
> 6. Apply ACCESS_ONCE() to unprotected ->jiffies_stall accesses,
> courtesty of Iulia Manda.
>
> 7. Make callers responsible for grace-period kthread wakeup in
> order to avoid potential silent grace-period stalls.
>
> 8. Remove "extern" from RCU function declarations, courtesy of
> Iulia Manda.
>
> 9. Apply ACCESS_ONCE() to additional ->jiffies_stall accesses,
> courtesy of Himangi Saraogi.
>
> 10. Add event tracing to dyntick_save_progress_counter(), courtesy
> of Andreea-Cristina Bernat.
>
> 11. Make rcu_init_one() use nr_cpu_ids instead of NR_CPUS for
> data-structure setup limit check, courtesy of Himangi Saraogi.
>
> 12. Remove redundant kfree_call_rcu() definition by using the
> rcu_state pointer, courtesy of Andreea-Cristina Bernat.
>
> 13. Merge rcu_sched_force_quiescent_state() definition with
> rcu_force_quiescent_state() by using the rcu_state pointer,
> courtesy of Andreea-Cristina Bernat.
>
> 14. Document RCU_INIT_POINTER()'s lack of ordering guarantees.
>
> 15. Automatically bind RCU's grace-period kthreads to timekeeping
> CPU for NO_HZ_FULL builds.
>
> 16. Make large and small sysidle systems use equivalent state machine.
>
> 17. Remove duplicate resched_cpu() declaration, courtesy of
> Pranith Kumar.
>
> 18. Replace deprecated __this_cpu_ptr() uses with raw_cpu_ptr(),
> courtesy of Christoph Lameter.
>
> 19. Make softirq processing provide a quiescent state only once
> per full pass over all softirqs rather than once per action,
> courtesy of Eric Dumazet.

For all 19:
Reviewed-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
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