Re: [PATCH tip/core/rcu 0/11] Fixes for 3.12

From: Josh Triplett
Date: Sat Aug 17 2013 - 23:24:30 EST


On Sat, Aug 17, 2013 at 06:37:35PM -0700, Paul E. McKenney wrote:
> Hello!
>
> This series contains a number of miscellaneous fixes:
>
> 1. Switch to expedited grace periods during hibernation operations
> (courtesy of Borislav Petkov).
>
> 2. Restrict above expediting to systems of 256 or fewer CPUs.
>
> 3. Make RCU debugobjects fixup actions leak callbacks rather than
> risking corrupting the callback lists.
>
> 4. Propagate above callback leaking to debugobjects's callers.
>
> 5. Make call_rcu() leak callbacks when debugobjects indicates an error.
>
> 6. Switch to expedited grace periods during suspend/resume operations
> (Courtesy of Bjørn Mork).
>
> 7. Avoid needless self-wakeups from the grace-period kthreads.
>
> 8. Make list_first_or_null_rcu() use list_entry_rcu() (courtesy of
> Tejun Heo).
>
> 9. Fix irq_work_queue() build error for TREE_PREEMPT_RCU for some
> configurations (courtesy of James Hogan).
>
> 10. Simplify _rcu_barrier() processing per Linus Torvalds feedback.
>
> 11. Avoid signed-overflow undefined behavior in time_after() and friends.

Comments on 2, 6, and 11; for the rest:
Reviewed-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
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