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Date: Thu, 11 Aug 2016 13:50:10 -0500 (CDT)
From: Christoph Lameter <cl@linux.com>
Subject: Re: [PATCH v14 04/14] task_isolation: add initial support
In-Reply-To: <20160811181132.GD4214@lerouge>
Message-ID: <alpine.DEB.2.20.1608111349190.1644@east.gentwo.org>
References: <1470774596-17341-1-git-send-email-cmetcalf@mellanox.com> <1470774596-17341-5-git-send-email-cmetcalf@mellanox.com> <20160811181132.GD4214@lerouge>
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Sender: owner-linux-mm@kvack.org
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To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Chris Metcalf <cmetcalf@mellanox.com>, Gilad Ben Yossef <giladb@mellanox.com>, Steven Rostedt <rostedt@goodmis.org>, Ingo Molnar <mingo@kernel.org>, Peter Zijlstra <peterz@infradead.org>, Andrew Morton <akpm@linux-foundation.org>, Rik van Riel <riel@redhat.com>, Tejun Heo <tj@kernel.org>, Thomas Gleixner <tglx@linutronix.de>, "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>, Viresh Kumar <viresh.kumar@linaro.org>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will.deacon@arm.com>, Andy Lutomirski <luto@amacapital.net>, Michal Hocko <mhocko@suse.com>, linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org

On Thu, 11 Aug 2016, Frederic Weisbecker wrote:

> Do we need to quiesce vmstat everytime before entering userspace?
> I thought that vmstat only need to be offlined once and for all?

Once is sufficient after disabling the tick.

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