linux-kernel - Re: [ANNOUNCE] 3.4.41-rt55-feat1

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Date:	Thu, 25 Apr 2013 15:12:18 +0200
From:	Mike Galbraith <bitbucket@...ine.de>
To:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:	Tim Sander <tim.sander@....com>,
	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>,
	RT <linux-rt-users@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Carsten Emde <C.Emde@...dl.org>, John Kacur <jkacur@...hat.com>
Subject: Re: [ANNOUNCE] 3.4.41-rt55-feat1

On Thu, 2013-04-25 at 14:55 +0200, Sebastian Andrzej Siewior wrote: 
> On 04/25/2013 02:36 PM, Mike Galbraith wrote:
> > hrtimer: fix hrtimer free zone build bug
> > 
> > Signed-off-by: Mike Galbraith <bitbucket@...ine.de>
> > 
> > diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
> > index 2328c04..31d57a2 100644
> > --- a/kernel/hrtimer.c
> > +++ b/kernel/hrtimer.c
> > @@ -1036,7 +1036,7 @@ int __hrtimer_start_range_ns(struct hrtimer *timer, ktime_t tim,
> >  		&& hrtimer_enqueue_reprogram(timer, new_base)) {
> >  
> >  		if (wakeup
> > -#ifdef CONFIG_PREEMPT_RT_BASE
> > +#if defined(CONFIG_PREEMPT_RT_BASE) && defined(CONFIG_HIGH_RES_TIMERS)
> >  		    /*
> >  		     * Move softirq based timers away from the rbtree in
> >  		     * case it expired already. Otherwise we would have a
> > 
> > 
> 
> hrtimer_enqueue_reprogram() returns 0 in non-high res case so
> everything down there is never reached. The compiler should see this :)

-Werror=

  CC      kernel/hrtimer.o
kernel/hrtimer.c: In function ‘__hrtimer_start_range_ns’:
kernel/hrtimer.c:1045:7: error: implicit declaration of function ‘hrtimer_rt_defer’ [-Werror=implicit-function-declaration]
kernel/hrtimer.c: At top level:
kernel/hrtimer.c:1416:12: error: static declaration of ‘hrtimer_rt_defer’ follows non-static declaration
kernel/hrtimer.c:1045:10: note: previous implicit declaration of ‘hrtimer_rt_defer’ was here
cc1: some warnings being treated as errors

make[1]: *** [kernel/hrtimer.o] Error 1
make: *** [kernel/hrtimer.o] Error 2
git@...ge:~/linux-2.6>

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