Date: Thu, 30 Jul 2015 08:13:41 -0700
From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: linux-kernel@vger.kernel.org, mingo@kernel.org, jiangshanlai@gmail.com,
        dipankar@in.ibm.com, akpm@linux-foundation.org,
        mathieu.desnoyers@efficios.com, josh@joshtriplett.org,
        tglx@linutronix.de, rostedt@goodmis.org, dhowells@redhat.com,
        edumazet@google.com, dvhart@linux.intel.com, fweisbec@gmail.com,
        oleg@redhat.com, bobby.prani@gmail.com
Subject: Re: [PATCH tip/core/rcu 02/19] rcu: Remove CONFIG_RCU_CPU_STALL_INFO
Message-ID: <20150730151341.GD27280@linux.vnet.ibm.com>
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On Thu, Jul 30, 2015 at 02:49:55PM +0200, Peter Zijlstra wrote:
> On Fri, Jul 17, 2015 at 04:29:07PM -0700, Paul E. McKenney wrote:
> > From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
> > 
> > The CONFIG_RCU_CPU_STALL_INFO has been default-y for a couple of
> > releases with no complaints, so it is time to eliminate this Kconfig
> > option entirely, so that the long-form RCU CPU stall warnings cannot
> > be disabled.  This commit does just that.
> 
> I would think the tiny people (/me looks @ Josh) would complain about
> this..

They might, but if they do, I will point out that CONFIG_RCU_CPU_STALL_INFO
only has effect for Tree RCU.  And also that RCU CPU stall warnings are
compiled out unless CONFIG_RCU_TRACE=y, which I suspect they are disabling.

All that aside, I do appreciate the attention to tininess.

							Thanx, Paul

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