From mboxrd@z Thu Jan 1 00:00:00 1970 From: Catalin Marinas Subject: Re: [PATCH] arm64: replace read_lock to rcu lock in call_step_hook Date: Tue, 9 Feb 2016 16:24:27 +0000 Message-ID: <20160209162427.GH16122@e104818-lin.cambridge.arm.com> References: <1454971764-30720-1-git-send-email-yang.shi@linaro.org> <20160209145426.GR22874@arm.com> <20160209100758.69d9006f@gandalf.local.home> <20160209160442.GS22874@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Steven Rostedt , Yang Shi , linaro-kernel@lists.linaro.org, linux-rt-users@vger.kernel.org, bigeasy@linutronix.de, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org To: Will Deacon Return-path: Content-Disposition: inline In-Reply-To: <20160209160442.GS22874@arm.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-rt-users.vger.kernel.org On Tue, Feb 09, 2016 at 04:04:42PM +0000, Will Deacon wrote: > 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 > > > 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. Queued. -- Catalin