linux-kernel - Re: [PATCH tip/core/rcu 0/20] Miscellaneous fixes for 4.11

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Date:   Mon, 16 Jan 2017 17:07:36 -0800
From:   "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:     Josh Triplett <josh@...htriplett.org>
Cc:     linux-kernel@...r.kernel.org, mingo@...nel.org,
        jiangshanlai@...il.com, dipankar@...ibm.com,
        akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
        tglx@...utronix.de, peterz@...radead.org, rostedt@...dmis.org,
        dhowells@...hat.com, edumazet@...gle.com, dvhart@...ux.intel.com,
        fweisbec@...il.com, oleg@...hat.com, bobby.prani@...il.com
Subject: Re: [PATCH tip/core/rcu 0/20] Miscellaneous fixes for 4.11

On Mon, Jan 16, 2017 at 12:09:20AM -0800, Josh Triplett wrote:
> On Sat, Jan 14, 2017 at 01:12:55AM -0800, Paul E. McKenney wrote:
> > Hello!
> > 
> > This series provides miscellaneous fixes:
> > 
> > 1.	Make RCU_EXPEDITE_BOOT be the default in order to speed up
> > 	boot, courtesy of Sebastian Andrzej Siewior.
> > 
> > 2.	Make RCU suspicious-access lockdep splats use pr_err().
> > 
> > 3.	Disable sys_membarrier when nohz_full is enabled, courtesy
> > 	of Mathieu Desnoyers.
> > 
> > 4.	Only dump stalled-tasks stacks if there was a real stall, courtesy
> > 	of Byungchul Park.
> > 
> > 5.	Remove unneeded rcu_process_callbacks() declarations.
> > 
> > 6.	Remove unused but set "mask" variable, courtesy of Tobias Klauser.
> > 
> > 7.	Remove short-term CPU kicking.
> > 
> > 8.	Add long-term CPU kicking.
> > 
> > 9.	Once again use NMI-based stack traces in stall warnings.
> > 
> > 10.	Add functions to test for trivial grace periods.
> > 
> > 11.	Make cond_resched() provide RCU quiescent state, which will
> > 	hopefully lead to the removal of cond_resched_rcu_qs().
> > 
> > 12.	Re-enable TASKS_RCU for User Mode Linux.
> > 
> > 13.	Don't wake rcuc/X kthreads on NOCB CPUs.
> > 
> > 14.	Add comment headers to expedited-grace-period counter functions.
> > 
> > 15.	Make rcu_cpu_starting() use its "cpu" argument.
> > 
> > 16.	Enable RCU tracepoints by default to aid in debugging, courtesy
> > 	of Matt Fleming.
> > 
> > 17.	Fix comment in rcu_organize_nocb_kthreads(), which no longer
> > 	spawns kthreads.
> > 
> > 18.	Clarify comments about when llist locking is needed, courtesy
> > 	of Joel Fernandes.
> > 
> > 19.	Eliminate unused expedited_normal counter.
> > 
> > 20.	Add lockdep checks to synchronous expedited primitives.
> 
> I replied to patches 2, 8, 10, and 11 with comments.  For the rest:
> Reviewed-by: Josh Triplett <josh@...htriplett.org>

Applied, thank you!

							Thanx, Paul