Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.33 as permitted sender) client-ip=23.128.96.33;
Date:   Thu, 23 Nov 2023 19:04:02 +0100
From:   Frederic Weisbecker <frederic@kernel.org>
To:     "Paul E. McKenney" <paulmck@kernel.org>
Cc:     Qais Yousef <qyousef@layalina.io>,
        Joel Fernandes <joel@joelfernandes.org>,
        Neeraj Upadhyay <quic_neeraju@quicinc.com>,
        Josh Triplett <josh@joshtriplett.org>,
        Boqun Feng <boqun.feng@gmail.com>,
        Steven Rostedt <rostedt@goodmis.org>,
        Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
        Lai Jiangshan <jiangshanlai@gmail.com>,
        Zqiang <qiang.zhang1211@gmail.com>,
        Andrea Righi <andrea.righi@canonical.com>,
        John Stultz <jstultz@google.com>, linux-kernel@vger.kernel.org,
        rcu@vger.kernel.org
Subject: Re: [PATCH] rcu: Provide a boot time parameter to enable lazy RCU
Message-ID: <ZV-UEjyjjOHaRVPh@localhost.localdomain>
References: <20231121205304.315146-1-qyousef@layalina.io>
 <811b2157-1009-4339-8ff2-0433512f3094@paulmck-laptop>
 <20231121214415.ovoskvbjarzpxi6e@airbuntu>
 <8ad4e628-7a88-490c-a54d-df09f851f189@paulmck-laptop>
 <20231121221556.vtpmboamgszbt3jf@airbuntu>
 <4ec83bf4-4c56-4f47-8473-151b57b80840@paulmck-laptop>
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <4ec83bf4-4c56-4f47-8473-151b57b80840@paulmck-laptop>
Precedence: bulk

Le Thu, Nov 23, 2023 at 09:42:12AM -0800, Paul E. McKenney a ?crit :
> On Tue, Nov 21, 2023 at 10:15:56PM +0000, Qais Yousef wrote:
> > On 11/22/23 15:26, Paul E. McKenney wrote:
> > 
> > > > Either way; I'll follow what the crowd wants too :-)
> > > 
> > > Usually a wise choice.  ;-)
> > > 
> > > But I must defer to the people using it.
> > 
> > >From Android PoV I'd like to be able to boot with default disabled and allow
> > people to opt-in. At least for the time being until we have confidence no one
> > is caught with surprise if this caused unexpected problems.
> > 
> > In the future it might default to on once it gets wider usage and testing.
> > 
> > So having a new Kconfig to DEFAULT_OFF sounds good to me to enable a compile
> > time switch to pick the default with a boot time to further control.
> > 
> > Which would be my plan for v2 unless I hear another suggestion in the coming
> > week (where I hope people would have had a chance to look and think about it).
> 
> Sounds good to me!  Silence will be interpreted as assent.  ;-)

Silence sounds good to me :-)

Thanks.