From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ingo Molnar Subject: Re: [PATCH v9 03/19] qspinlock: Add pending bit Date: Fri, 18 Apr 2014 09:42:55 +0200 Message-ID: <20140418074255.GA13517@gmail.com> References: <1397747051-15401-1-git-send-email-Waiman.Long@hp.com> <1397747051-15401-4-git-send-email-Waiman.Long@hp.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <1397747051-15401-4-git-send-email-Waiman.Long@hp.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.linux-foundation.org Errors-To: virtualization-bounces@lists.linux-foundation.org To: Waiman Long Cc: linux-arch@vger.kernel.org, Rik van Riel , Raghavendra K T , Gleb Natapov , kvm@vger.kernel.org, Konrad Rzeszutek Wilk , Peter Zijlstra , Scott J Norton , x86@kernel.org, Paolo Bonzini , linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, Ingo Molnar , Chegu Vinod , David Vrabel , "H. Peter Anvin" , xen-devel@lists.xenproject.org, Thomas Gleixner , "Paul E. McKenney" , Linus Torvalds , Oleg Nesterov List-Id: linux-arch.vger.kernel.org * Waiman Long wrote: > Because the qspinlock needs to touch a second cacheline; add a pending > bit and allow a single in-word spinner before we punt to the second > cacheline. > > Signed-off-by: Peter Zijlstra > Signed-off-by: Waiman Long This patch should have a "From: Peter" in it as well, right? Thanks, Ingo From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ee0-f47.google.com ([74.125.83.47]:35488 "EHLO mail-ee0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750959AbaDRHnC (ORCPT ); Fri, 18 Apr 2014 03:43:02 -0400 Date: Fri, 18 Apr 2014 09:42:55 +0200 From: Ingo Molnar Subject: Re: [PATCH v9 03/19] qspinlock: Add pending bit Message-ID: <20140418074255.GA13517@gmail.com> References: <1397747051-15401-1-git-send-email-Waiman.Long@hp.com> <1397747051-15401-4-git-send-email-Waiman.Long@hp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1397747051-15401-4-git-send-email-Waiman.Long@hp.com> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Waiman Long Cc: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Peter Zijlstra , linux-arch@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, xen-devel@lists.xenproject.org, kvm@vger.kernel.org, Paolo Bonzini , Konrad Rzeszutek Wilk , "Paul E. McKenney" , Rik van Riel , Linus Torvalds , Raghavendra K T , David Vrabel , Oleg Nesterov , Gleb Natapov , Scott J Norton , Chegu Vinod Message-ID: <20140418074255.xZ4usfNGIZoLV4nYVW-4hP9B4_OjTT0wczMVGoKYdRo@z> * Waiman Long wrote: > Because the qspinlock needs to touch a second cacheline; add a pending > bit and allow a single in-word spinner before we punt to the second > cacheline. > > Signed-off-by: Peter Zijlstra > Signed-off-by: Waiman Long This patch should have a "From: Peter" in it as well, right? Thanks, Ingo