Re: [PATCH] rcu: unify boost and kthread priorities

From: Paul E. McKenney
Date: Wed Sep 17 2014 - 13:17:27 EST


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@xxxxxxxxx>
> > [ paulmck: Ported to rcu/dev. ]
> > Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
>
> 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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