Date: Mon, 11 May 2015 19:33:06 +0200
From: Frederic Weisbecker <fweisbec@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: paulmck@linux.vnet.ibm.com, Steven Rostedt <rostedt@goodmis.org>,
        Ingo Molnar <mingo@kernel.org>, Chris Metcalf <cmetcalf@ezchip.com>,
        Gilad Ben Yossef <giladb@ezchip.com>, Ingo Molnar <mingo@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>, Rik van Riel <riel@redhat.com>,
        Tejun Heo <tj@kernel.org>, Thomas Gleixner <tglx@linutronix.de>,
        Christoph Lameter <cl@linux.com>,
        "Srivatsa S. Bhat" <srivatsa.bhat@linux.vnet.ibm.com>,
        linux-doc@vger.kernel.org, linux-api@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/6] support "dataplane" mode for nohz_full
Message-ID: <20150511173305.GC32512@lerouge>
References: <1431107927-13998-1-git-send-email-cmetcalf@ezchip.com>
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 <20150508172210.559830a9@gandalf.local.home>
 <554D428E.6020702@ezchip.com>
 <20150508161909.308d60e21f6b83b897174276@linux-foundation.org>
 <20150509070538.GA9413@gmail.com>
 <20150511085759.71deeb64@gandalf.local.home>
 <20150511171916.GN6776@linux.vnet.ibm.com>
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On Mon, May 11, 2015 at 10:27:44AM -0700, Andrew Morton wrote:
> On Mon, 11 May 2015 10:19:16 -0700 "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> wrote:
> 
> > On Mon, May 11, 2015 at 08:57:59AM -0400, Steven Rostedt wrote:
> > > 
> > > NO_HZ_LEAVE_ME_THE_FSCK_ALONE!
> > 
> > NO_HZ_OVERFLOWING?
> 
> Actually, "NO_HZ" shouldn't appear in the name at all.  The objective
> is to permit userspace to execute without interruption.  NO_HZ is a
> part of that, as is NO_INTERRUPTS.  The "NO_HZ" thing is a historical
> artifact from an early partial implementation.

Agreed! Which is why I'd rather advocate in favour of CONFIG_ISOLATION.
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