From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752644AbbEHJgL (ORCPT ); Fri, 8 May 2015 05:36:11 -0400 Received: from mail-wi0-f169.google.com ([209.85.212.169]:35313 "EHLO mail-wi0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751988AbbEHJgI (ORCPT ); Fri, 8 May 2015 05:36:08 -0400 Date: Fri, 8 May 2015 10:36:03 +0100 From: Lee Jones To: Paul Bolle Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@stlinux.com, devicetree@vger.kernel.org, daniel.lezcano@linaro.org, tglx@linutronix.de, wim@iguana.be, a.zummo@towertech.it, linux-watchdog@vger.kernel.org, rtc-linux@googlegroups.com, linux@roeck-us.net Subject: Re: [PATCH 03/12] clocksource: sti: Provide 'use timer as sched clock' capability Message-ID: <20150508093603.GB29044@x1> References: <1431005924-21777-1-git-send-email-lee.jones@linaro.org> <1431005924-21777-4-git-send-email-lee.jones@linaro.org> <1431074699.13593.4.camel@x220> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1431074699.13593.4.camel@x220> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 08 May 2015, Paul Bolle wrote: > On Thu, 2015-05-07 at 14:38 +0100, Lee Jones wrote: > > --- a/drivers/clocksource/Kconfig > > +++ b/drivers/clocksource/Kconfig > > > +config CLKSRC_ST_LPC_TIMER_SCHED_CLOCK > > + bool > > + depends on CLKSRC_ST_LPC > > + default y > > + help > > + Use Low Power controller timer clock source as sched_clock > > This adds, as far as I can see, a Kconfig symbol that will always be in > lockstep with CLKSRC_ST_LPC. Ie, CLKSRC_ST_LPC and > CLKSRC_ST_LPC_TIMER_SCHED_CLOCK will always both be 'n' or both be 'y'. > > Are there plans to break that lockstep in the future? What's stopping CONFIG_CLKSRC_ST_LPC_TIMER_SCHED_CLOCK=n? -- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog