linux-kernel - Re: [PATCH tip/core/rcu 0/6] Dynticks updates for 4.11

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Message-Id: <20170118024456.GA2042@linux.vnet.ibm.com>
Date:   Tue, 17 Jan 2017 18:44:56 -0800
From:   "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:     linux-kernel@...r.kernel.org
Cc:     mingo@...nel.org, jiangshanlai@...il.com, dipankar@...ibm.com,
        akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
        josh@...htriplett.org, 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 0/6] Dynticks updates for 4.11

Hello!

This series provides v2 of the dynticks updates:

1-4.	Abstract access to the dyntick counter, replacing the current
	open-coding of atomic operations.

5.	Check cond_resched_rcu_qs() state less often to reduce GP overhead.

6.	Adjust FQS offline checks for exact online-CPU detection. 

Changes since v1:

o	Apply feedback from Josh Triplett and Peter Zijlstra.

							Thanx, Paul

------------------------------------------------------------------------

 include/linux/rcutiny.h    |    6 +
 include/trace/events/rcu.h |   10 -
 kernel/rcu/tree.c          |  241 ++++++++++++++++++++++++++++++---------------
 kernel/rcu/tree.h          |    2 
 kernel/rcu/tree_exp.h      |   12 --
 kernel/rcu/tree_plugin.h   |    2 
 kernel/rcu/tree_trace.c    |    2 
 7 files changed, 186 insertions(+), 89 deletions(-)