linux-kernel - RE: [PATCH v1 16/20] ARC: [plat-eznps] Use dedicated cpu

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Message-ID: <DB5PR02MB114146CFA891AF9010C8EE61D62B0@DB5PR02MB1141.eurprd02.prod.outlook.com>
Date:	Tue, 3 Nov 2015 14:02:52 +0000
From:	Noam Camus <noamc@...hip.com>
To:	Peter Zijlstra <peterz@...radead.org>
CC:	"linux-snps-arc@...ts.infradead.org" 
	<linux-snps-arc@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Tal Zilcer <talz@...hip.com>, Gil Fruchter <gilf@...hip.com>,
	Chris Metcalf <cmetcalf@...hip.com>
Subject: RE: [PATCH v1 16/20] ARC: [plat-eznps] Use dedicated cpu_relax()

From: Peter Zijlstra [mailto:peterz@...radead.org] 
Sent: Monday, November 02, 2015 11:22 AM


> At which point you might want to revisit:

> arch/arc/include/asm/processor.h:#define cpu_relax_lowlatency() cpu_relax()
Thanks, I will define this as barrier since cpu_relax() may take out current logical CPU for many cycles.
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