linux-kernel - Re: [PATCH v2 1/3] rcu: Assign higher prio to RCU threads if rcutorture is built-in

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Message-ID: <20180621002529.GA201296@joelaf.mtv.corp.google.com>
Date:   Wed, 20 Jun 2018 17:25:29 -0700
From:   Joel Fernandes <joel@...lfernandes.org>
To:     "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:     linux-kernel@...r.kernel.org, kernel-team@...roid.com,
        Byungchul Park <byungchul.park@....com>,
        Josh Triplett <josh@...htriplett.org>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        peterz@...radead.org, Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH v2 1/3] rcu: Assign higher prio to RCU threads if
 rcutorture is built-in

On Wed, Jun 20, 2018 at 10:10:41AM -0700, Paul E. McKenney wrote:
> On Tue, Jun 19, 2018 at 03:14:17PM -0700, Joel Fernandes wrote:
> > From: "Joel Fernandes (Google)" <joel@...lfernandes.org>
> > 
> > rcutorture boost tests fail even with CONFIG_RCU_BOOST set because
> > rcutorture's threads are equal priority to the default RCU kthreads (RT
> > class with priority of 1).
> > 
> > This patch checks if RCU torture is built into the kernel and if so,
> > assigns a higher priority to the RCU threads. With this the rcutorture
> > boost tests pass.
> > 
> > Signed-off-by: Joel Fernandes (Google) <joel@...lfernandes.org>
> 
> I queued all three for testing and further review.  I reworked the commit
> logs a bit and also pulled the error string onto one line to make it
> easier on people grepping for the message.  Please let me know if I
> messed anything up.

I double checked it and it looks good to me, thanks Paul!

Regards,

 - Joel