Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751903AbbETG5p (ORCPT ); Wed, 20 May 2015 02:57:45 -0400 Received: from casper.infradead.org ([85.118.1.10]:59020 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751126AbbETG5m (ORCPT ); Wed, 20 May 2015 02:57:42 -0400 Date: Wed, 20 May 2015 08:57:36 +0200 From: Peter Zijlstra To: Sarbojit Ganguly Cc: Arnd Bergmann , "linux-arm-kernel@lists.infradead.org" , "tglx@linutronix.de" , "mingo@redhat.com" , "hpa@zytor.com" , "Waiman.Long@hp.com" , "raghavendra.kt@linux.vnet.ibm.com" , "oleg@redhat.com" , "linux-kernel@vger.kernel.org" , SHARAN ALLUR , "torvalds@linux-foundation.org" , VIKRAM MUPPARTHI , SUNEEL KUMAR SURIMANI Subject: Re: Re: [RFC] arm: Add for atomic half word exchange Message-ID: <20150520065736.GI3644@twins.programming.kicks-ass.net> References: <1348896100.440561432098574765.JavaMail.weblogic@ep2mlwas07a> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1348896100.440561432098574765.JavaMail.weblogic@ep2mlwas07a> User-Agent: Mutt/1.5.21 (2012-12-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 612 Lines: 13 On Wed, May 20, 2015 at 05:09:34AM +0000, Sarbojit Ganguly wrote: > Yes, the main advantage of Qspinlock code can be observed in NUMA but > when I tested in an embedded system, a slight advantage was observed. OK, great! This is the first !x86 port I'm aware of and a load-store arch at that, so its good to hear our efforts at making it generic actually paid off. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/