linux-kernel - Re: [PATCH] rcu: unify boost and kthread priorities

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Message-ID: <20140917171717.GC4723@linux.vnet.ibm.com>
Date:	Wed, 17 Sep 2014 10:17:18 -0700
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Paul Bolle <pebolle@...cali.nl>
Cc:	Clark Williams <clark.williams@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rcu: unify boost and kthread priorities

On Wed, Sep 17, 2014 at 06:49:03PM +0200, Paul Bolle wrote:
> Hi Paul,
> 
> On Tue, 2014-09-16 at 13:41 -0700, Paul E. McKenney wrote:
> > rcu: unify boost and kthread priorities
> > 
> > Rename CONFIG_RCU_BOOST_PRIO to CONFIG_RCU_KTHREAD_PRIO and use this
> > value for both the per-CPU kthreads (rcuc/N) and the rcu boosting
> > threads (rcub/n).
> > 
> > Also, create the module_parameter rcutree.kthread_prio to be used on
> > the kernel command line at boot to set a new value (rcutree.kthread_prio=N).
> > 
> > Signed-off-by: Clark Williams <clark.williams@...il.com>
> > [ paulmck: Ported to rcu/dev. ]
> > Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
> 
> This landed in today's linux-next (ie, next-20140917) as commit
> 04a96e05bda6 ("rcu: unify boost and kthread priorities").
> 
> > diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
> >[...]
> > diff --git a/init/Kconfig b/init/Kconfig
> >[...]
> > diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
> >[...]
> 
> There's a reference to CONFIG_RCU_BOOST_PRIO in
> tools/testing/selftests/rcutorture/doc/TREE_RCU-kconfig.txt. It needs
> updating too, doesn't it?

Good catch!

Also the one in tools/testing/selftests/rcutorture/configs/rcu/TREE03.

Fixed both, thank you!

							Thanx, Paul

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