From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757431AbcBIQEm (ORCPT ); Tue, 9 Feb 2016 11:04:42 -0500 Received: from foss.arm.com ([217.140.101.70]:41319 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754781AbcBIQEl (ORCPT ); Tue, 9 Feb 2016 11:04:41 -0500 Date: Tue, 9 Feb 2016 16:04:42 +0000 From: Will Deacon To: Steven Rostedt Cc: Yang Shi , linaro-kernel@lists.linaro.org, linux-rt-users@vger.kernel.org, catalin.marinas@arm.com, bigeasy@linutronix.de, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH] arm64: replace read_lock to rcu lock in call_step_hook Message-ID: <20160209160442.GS22874@arm.com> References: <1454971764-30720-1-git-send-email-yang.shi@linaro.org> <20160209145426.GR22874@arm.com> <20160209100758.69d9006f@gandalf.local.home> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160209100758.69d9006f@gandalf.local.home> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Feb 09, 2016 at 10:07:58AM -0500, Steven Rostedt wrote: > On Tue, 9 Feb 2016 14:54:26 +0000 > Will Deacon wrote: > > > > Acked-by: Will Deacon > > Will, Hi Steve, > The patch looks good to me. Do you want to take it through your tree? > > It benefits mainline too as a rcu_read_lock() is more efficient than > rwlocks. Although I will say this is a slow path anyway. I was thinking that Catalin would queue it for 4.6 in the arm64 tree, since that's probably easiest in case any unlikely conflicts crop up. Will