linux-kernel - Re: [PATCH v16] sys_membarrier(): system-wide memory barrier (generic, x86)

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Message-ID: <20150422224850.76064d98@grimm.local.home>
Date:	Wed, 22 Apr 2015 22:48:50 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Stephen Hemminger <stephen@...workplumber.org>
Cc:	Pranith Kumar <bobby.prani@...il.com>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Josh Triplett <josh@...htriplett.org>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Nicholas Miell <nmiell@...cast.net>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...hat.com>,
	Alan Cox <gnomes@...rguk.ukuu.org.uk>,
	Lai Jiangshan <laijs@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	David Howells <dhowells@...hat.com>,
	Michael Kerrisk <mtk.manpages@...il.com>
Subject: Re: [PATCH v16] sys_membarrier(): system-wide memory barrier
 (generic, x86)

On Wed, 22 Apr 2015 17:40:51 -0700
Stephen Hemminger <stephen@...workplumber.org> wrote:

> The syscall should just return 0.
> Let the application not worry about how many CPU's are present

+1

-- Steve

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