linux-kernel - Re: linux-next: build failure after merge of the printk tree

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Message-ID: <20200624082137.GA14282@gondor.apana.org.au>
Date:   Wed, 24 Jun 2020 18:21:37 +1000
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Petr Mladek <pmladek@...e.com>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        "Steven Rostedt (VMware)" <rostedt@...dmis.org>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Peter Zijlstra <peterz@...radead.org>
Subject: Re: linux-next: build failure after merge of the printk tree

On Wed, Jun 24, 2020 at 10:19:29AM +0200, Petr Mladek wrote:
> On Wed 2020-06-24 10:20:58, Herbert Xu wrote:
> > On Tue, Jun 23, 2020 at 04:28:58PM +0200, Petr Mladek wrote:
> > >
> > > It is similar cycle:
> > > 
> > > spinlock_types.h -> lockdep.h -> printk.h -> ratelimit.h -> spinlock_types.h
> > > 
> > > But this time it happens via list.h -> kernel.h ->printk.h.
> > > Where list.h needs READ_ONCE() stuff from compiler.h.
> > 
> > But this is exactly the loop that's fixed by the lockdep_types
> > patch.
> 
> I think that this problem is similar to the one on s390 that was
> solved by compiler.h in arch/s390/include/asm/bug.h
> 
> It is related to
> https://lore.kernel.org/r/20200613142901.65xieioomt6bbqa6@ltop.local
> 
> It seems that we need the same change also in list.h.

Oh I see.  I misunderstood what you said in the first email.
 
> Do you mean to repost the 2nd patch with the change in
> include/linux/list.h?

OK let me test this and repost.

Thanks,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt