linux-kernel - Re: Build regression in next-20150331

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Date:	Wed, 01 Apr 2015 01:27:41 +0200
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Tyler Baker <tyler.baker@...aro.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>, rafael.j.wysocki@...el.com,
	John Stultz <john.stultz@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	Kevin Hilman <khilman@...aro.org>
Subject: Re: Build regression in next-20150331

On Wednesday, April 01, 2015 01:03:52 AM Rafael J. Wysocki wrote:
> On Tuesday, March 31, 2015 11:39:37 AM Tyler Baker wrote:
> > Hi Thomas, Rafael,
> > 
> > I was notified this morning by the kernelci.org system that a new
> > build error has been detected in next-20150331[0][1][2]. It seems that
> > "clockevents: Remove CONFIG_GENERIC_CLOCKEVENTS_BUILD"
> > c9439b1d6eb4ada5c2faf3970ac0d2bc4bd20e14 is the culprit.
> > 
> > Initially, I reported these failures to John Stultz and his response is below.
> > 
> > *snip*
> > 
> > I suspect we either need to enable GENERIC_CLOCKEVENTS on those three
> > hardware types, or if that's not possible, rework the definitions.
> > 
> > Or something like (copy-paste whitespace corruption below.. only for
> > reference, don't apply):
> > 
> > diff --git a/kernel/time/tick-internal.h b/kernel/time/tick-internal.h
> > index 2a1563a..6da40c0 100644
> > --- a/kernel/time/tick-internal.h
> > +++ b/kernel/time/tick-internal.h
> > @@ -107,12 +107,13 @@ static inline void tick_resume_broadcast(void) { }
> >  static inline bool tick_resume_check_broadcast(void) { return false; }
> >  static inline void tick_broadcast_init(void) { }
> >  static inline int tick_broadcast_update_freq(struct
> > clock_event_device *dev, u32 freq) { return -ENODEV; }
> > -
> > +#ifdef CONFIG_GENERIC_CLOCKEVENTS
> >  /* Set the periodic handler in non broadcast mode */
> >  static inline void tick_set_periodic_handler(struct
> > clock_event_device *dev, int broadcast)
> >  {
> >         dev->event_handler = tick_handle_periodic;
> >  }
> > +#endif
> >  #endif /* !BROADCAST */
> > 
> > *snip*
> > 
> > Any chance either of you can reproduce this issue on your end?
> 
> Can you please tell me if the appended patch helps?

Scratch that, wrong patch.

Please try the one below instead.

Rafael


---
 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 */
 

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