linux-kernel - Re: [PATCH v2] rcu: Allow to eliminate softirq processing from rcutree

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Message-Id: <20190320161500.GK4102@linux.ibm.com>
Date:   Wed, 20 Mar 2019 09:15:00 -0700
From:   "Paul E. McKenney" <paulmck@...ux.ibm.com>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:     linux-kernel@...r.kernel.org,
        Josh Triplett <josh@...htriplett.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        Joel Fernandes <joel@...lfernandes.org>, tglx@...utronix.de,
        Mike Galbraith <efault@....de>
Subject: Re: [PATCH v2] rcu: Allow to eliminate softirq processing from
 rcutree

On Wed, Mar 20, 2019 at 05:05:48PM +0100, Sebastian Andrzej Siewior wrote:
> On 2019-03-20 08:44:40 [-0700], Paul E. McKenney wrote:
> > 
> > And it does seem to work better.  I will give it more intense testing
> > later on, but in the meantime I have merged this change into your
> > earlier patch.
> 
> thanks.
> 
> > We will see whether or not I am able summon up the courage to push it
> > into v5.2, however.  ;-)
> 
> :)
> 
> I added a command line option for the switch because it was easier for
> testing. It can be renamed if a different name suits it better or
> replaced with a Kconfig if it makes more sense.

I am considering making it a module_param() to avoid namespace pollution,
as it would become something like rcutree.nosoftirq.

Thoughts?

							Thanx, Paul