From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Zijlstra Subject: Re: [RFC PATCH-tip v2 4/6] locking/rwsem: move down rwsem_down_read_failed function Date: Wed, 15 Jun 2016 19:40:55 +0200 Message-ID: <20160615174055.GS30921@twins.programming.kicks-ass.net> References: <1465944489-43440-1-git-send-email-Waiman.Long@hpe.com> <1465944489-43440-5-git-send-email-Waiman.Long@hpe.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1465944489-43440-5-git-send-email-Waiman.Long@hpe.com> Sender: linux-ia64-owner@vger.kernel.org To: Waiman Long Cc: Ingo Molnar , linux-kernel@vger.kernel.org, x86@kernel.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org, linux-s390@vger.kernel.org, linux-arch@vger.kernel.org, Davidlohr Bueso , Jason Low , Dave Chinner , Scott J Norton , Douglas Hatch List-Id: linux-arch.vger.kernel.org On Tue, Jun 14, 2016 at 06:48:07PM -0400, Waiman Long wrote: > Move the rwsem_down_read_failed() function down to below the optimistic > spinning section before enabling optimistic spinning for the readers. newline > There is no change in code. Changelog fails to explain the why part. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from merlin.infradead.org ([205.233.59.134]:38149 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752206AbcFORlG (ORCPT ); Wed, 15 Jun 2016 13:41:06 -0400 Date: Wed, 15 Jun 2016 19:40:55 +0200 From: Peter Zijlstra Subject: Re: [RFC PATCH-tip v2 4/6] locking/rwsem: move down rwsem_down_read_failed function Message-ID: <20160615174055.GS30921@twins.programming.kicks-ass.net> References: <1465944489-43440-1-git-send-email-Waiman.Long@hpe.com> <1465944489-43440-5-git-send-email-Waiman.Long@hpe.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1465944489-43440-5-git-send-email-Waiman.Long@hpe.com> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Waiman Long Cc: Ingo Molnar , linux-kernel@vger.kernel.org, x86@kernel.org, linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org, linux-s390@vger.kernel.org, linux-arch@vger.kernel.org, Davidlohr Bueso , Jason Low , Dave Chinner , Scott J Norton , Douglas Hatch Message-ID: <20160615174055.T75_mu7TIsF8ijncDqHJl3afmXmRJ5u-5w2ST-tomFc@z> On Tue, Jun 14, 2016 at 06:48:07PM -0400, Waiman Long wrote: > Move the rwsem_down_read_failed() function down to below the optimistic > spinning section before enabling optimistic spinning for the readers. newline > There is no change in code. Changelog fails to explain the why part.