linux-kernel - Re: [PATCH] sched: Remove ACCESS

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Message-ID: <20140812055527.GI9918@twins.programming.kicks-ass.net>
Date:	Tue, 12 Aug 2014 07:55:27 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Pranith Kumar <bobby.prani@...il.com>
Cc:	Ingo Molnar <mingo@...hat.com>,
	"open list:SCHEDULER" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] sched: Remove ACCESS_ONCE() for jiffies

On Mon, Aug 11, 2014 at 06:51:41PM -0400, Pranith Kumar wrote:
> jiffies is declared as a volatile variable. Therefore it is not neccessary to
> use ACCESS_ONCE() while reading it.

It also doesn't hurt and it documents intent, so I'm inclined to keep
it.

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