linux-kernel - Re: [PATCH v2 rcu-dev 1/3] rcuperf: Add ability to increase object allocation size

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Date:   Tue, 17 Mar 2020 18:30:51 -0400
From:   Joel Fernandes <joel@...lfernandes.org>
To:     "Paul E. McKenney" <paulmck@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Davidlohr Bueso <dave@...olabs.net>,
        Josh Triplett <josh@...htriplett.org>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        rcu <rcu@...r.kernel.org>, Steven Rostedt <rostedt@...dmis.org>,
        "Uladzislau Rezki (Sony)" <urezki@...il.com>
Subject: Re: [PATCH v2 rcu-dev 1/3] rcuperf: Add ability to increase object
 allocation size

On Tue, Mar 17, 2020 at 5:45 PM Paul E. McKenney <paulmck@...nel.org> wrote:
>
> On Tue, Mar 17, 2020 at 02:08:22PM -0700, Paul E. McKenney wrote:
> > On Mon, Mar 16, 2020 at 12:32:26PM -0400, Joel Fernandes (Google) wrote:
> > > This allows us to increase memory pressure dynamically using a new
> > > rcuperf boot command line parameter called 'rcumult'.
> > >
> > > Signed-off-by: Joel Fernandes (Google) <joel@...lfernandes.org>
> >
> > Applied for testing and review, thank you!
>
> But testing did not go far:
>
> kernel/rcu/tree.c: In function ‘kfree_rcu_shrink_count’:
> kernel/rcu/tree.c:3120:16: warning: unused variable ‘flags’ [-Wunused-variable]
>   unsigned long flags, count = 0;

I fixed the warning already but did not resend since it was just the
one unused variable warning. The patches are otherwise good to apply.
Sorry, and I can resend it soon if you are not reapplying right now.

thanks,

 - Joel