linux-kernel - Re: [paulmck-rcu:fastexp.2022.04.01a] BUILD REGRESSION d9f3e7d671416fdf5b61f094765754269b652db0

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Date:   Mon, 4 Apr 2022 08:10:45 -0700
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>
Cc:     kernel test robot <lkp@...el.com>, linux-kernel@...r.kernel.org
Subject: Re: [paulmck-rcu:fastexp.2022.04.01a] BUILD REGRESSION
 d9f3e7d671416fdf5b61f094765754269b652db0

On Mon, Apr 04, 2022 at 01:40:41PM +0530, Aneesh Kumar K.V wrote:
> "Paul E. McKenney" <paulmck@...nel.org> writes:
> 
> > On Sat, Apr 02, 2022 at 11:43:01PM +0800, kernel test robot wrote:
> >> tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git fastexp.2022.04.01a
> >> branch HEAD: d9f3e7d671416fdf5b61f094765754269b652db0  EXP rcu: Move expedited grace period (GP) work to RT kthread_worker
> >> 
> >> Error/Warning reports:
> >> 
> >> https://lore.kernel.org/lkml/202204021454.WDwBbwVL-lkp@intel.com
> >> 
> >> Error/Warning: (recently discovered and may have been fixed)
> >> 
> >> arch/powerpc/include/asm/book3s/64/pgtable-64k.h:60:1: error: no return statement in function returning non-void
> >
> > Adding Aneesh on CC.  My kneejerk reaction would be to add a
> > "return 0" to this function, but there might be a reason why it
> > looks like this:
> 
> yes, that should work. Do you want me to send a patch for this? Or will
> it get folded with other changes?

As far as I know, I won't be touching this file anytime soon.  So
please do send a patch.  ;-)

							Thanx, Paul

> > 	/*
> > 	 * This should never get called
> > 	 */
> > 	static inline int get_hugepd_cache_index(int index)
> > 	{
> > 		BUG();
> > 	}
> >
> > Working on the other problem with RCU's Kconfig options.
> >
> 
> -aneesh