From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752715AbbDCKnF (ORCPT ); Fri, 3 Apr 2015 06:43:05 -0400 Received: from v094114.home.net.pl ([79.96.170.134]:62231 "HELO v094114.home.net.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752336AbbDCKnC (ORCPT ); Fri, 3 Apr 2015 06:43:02 -0400 From: "Rafael J. Wysocki" To: Tyler Baker , Peter Zijlstra Cc: Thomas Gleixner , rafael.j.wysocki@intel.com, John Stultz , "linux-kernel@vger.kernel.org" , linux-arm-kernel , Kevin Hilman Subject: Re: Build regression in next-20150331 Date: Fri, 03 Apr 2015 13:07:19 +0200 Message-ID: <2449654.mrTjPJtNze@vostro.rjw.lan> User-Agent: KMail/4.11.5 (Linux/3.19.0+; KDE/4.11.5; x86_64; ; ) In-Reply-To: References: <20150402082917.GS23123@twins.programming.kicks-ass.net> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thursday, April 02, 2015 07:59:53 PM Tyler Baker wrote: > On 2 April 2015 at 01:29, Peter Zijlstra wrote: > > On Wed, Apr 01, 2015 at 11:46:10PM +0200, Rafael J. Wysocki wrote: > > > >> > > --- > >> > > kernel/time/tick-internal.h | 2 ++ > >> > > 1 file changed, 2 insertions(+) > >> > > > >> > > Index: linux-pm/kernel/time/tick-internal.h > >> > > =================================================================== > >> > > --- linux-pm.orig/kernel/time/tick-internal.h > >> > > +++ linux-pm/kernel/time/tick-internal.h > >> > > @@ -110,7 +110,9 @@ static inline int tick_broadcast_update_ > >> > > /* Set the periodic handler in non broadcast mode */ > >> > > static inline void tick_set_periodic_handler(struct clock_event_device *dev, int broadcast) > >> > > { > >> > > +#ifdef CONFIG_GENERIC_CLOCKEVENTS > >> > > dev->event_handler = tick_handle_periodic; > >> > > +#endif > >> > > } > >> > > #endif /* !BROADCAST */ > > > >> Peter, do you think the above is acceptable or do I need to do anything more > >> sophisticated to fix this? [The alternative would be probably to prepare an > >> empty definition of tick_handle_periodic() for CONFIG_GENERIC_CLOCKEVENTS and > >> move the definition of struct clock_event_device from under that Kconfig > >> option.] > > > > > > Does not something like the below make more sense? The entire broadcast > > thing doesn't make sense if we don't have generic_clockevents. > > > > Should we wrap more in generic_clockevents there? > > > > --- > > kernel/time/tick-internal.h | 2 ++ > > 1 file changed, 2 insertions(+) > > > > diff --git a/kernel/time/tick-internal.h b/kernel/time/tick-internal.h > > index 2a1563a..5569e65 100644 > > --- a/kernel/time/tick-internal.h > > +++ b/kernel/time/tick-internal.h > > @@ -81,6 +81,7 @@ static inline int tick_check_oneshot_change(int allow_nohz) { return 0; } > > #endif /* !TICK_ONESHOT */ > > > > /* Broadcasting support */ > > +#ifdef CONFIG_GENERIC_CLOCKEVENTS > > #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST > > extern int tick_device_uses_broadcast(struct clock_event_device *dev, int cpu); > > extern void tick_install_broadcast_device(struct clock_event_device *dev); > > @@ -114,6 +115,7 @@ static inline void tick_set_periodic_handler(struct clock_event_device *dev, int > > dev->event_handler = tick_handle_periodic; > > } > > #endif /* !BROADCAST */ > > +#endif /* GENERIC */ > > > > /* Functions related to oneshot broadcasting */ > > #if defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) && defined(CONFIG_TICK_ONESHOT) > > Tested-by: Tyler Baker > > Looks good to me. > > Applied on top of next-20150402[0]: Cool, so FWIW Acked-by: Rafael J. Wysocki Peter, I'm assiming that you'll make sure this goes into tip/timers/core. > --- > kernel/time/tick-internal.h | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/kernel/time/tick-internal.h b/kernel/time/tick-internal.h > index 2a1563a..e332bb4 100644 > --- a/kernel/time/tick-internal.h > +++ b/kernel/time/tick-internal.h > @@ -81,6 +81,7 @@ static inline int tick_check_oneshot_change(int > allow_nohz) { return 0; } > #endif /* !TICK_ONESHOT */ > > /* Broadcasting support */ > +#ifdef CONFIG_GENERIC_CLOCKEVENTS > #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST > extern int tick_device_uses_broadcast(struct clock_event_device *dev, int cpu); > extern void tick_install_broadcast_device(struct clock_event_device *dev); > @@ -114,7 +115,7 @@ static inline void > tick_set_periodic_handler(struct clock_event_device *dev, int > dev->event_handler = tick_handle_periodic; > } > #endif /* !BROADCAST */ > +#endif /* GENERIC */ > /* Functions related to oneshot broadcasting */ > #if defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) && > defined(CONFIG_TICK_ONESHOT) > extern void tick_broadcast_setup_oneshot(struct clock_event_device *bc); > --- > > Tyler > > [0] http://kernelci.org/build/tbaker/kernel/v4.0-rc6-8742-g76c8cce3+gcc-linaro-4.9-2015.02/ -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center.