Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Wed, 7 Mar 2018 20:48:56 +0900
From:   Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
To:     Arnd Bergmann <arnd@arndb.de>
Cc:     Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>,
        Petr Mladek <pmladek@suse.com>, Tejun Heo <tj@kernel.org>,
        Steven Rostedt <rostedt@goodmis.org>,
        Dave Young <dyoung@redhat.com>,
        Andi Kleen <ak@linux.intel.com>,
        Greentime Hu <green.hu@gmail.com>,
        Vincent Chen <deanbo422@gmail.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Stephen Rothwell <sfr@canb.auug.org.au>,
        adi-buildroot-devel@lists.sourceforge.net,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Subject: Re: [PATCH] dump_stack: convert generic dump_stack into a weak symbol
Message-ID: <20180307114845.GA894@jagdpanzerIV>
References: <20180305053742.9149-1-sergey.senozhatsky@gmail.com>
 <CAK8P3a1aCQWwrJuCmx-nrMG58NQFCkCPRuAT5g43Lty13nE2dg@mail.gmail.com>
 <20180307022127.GB802@jagdpanzerIV>
 <CAK8P3a172j6r2HEwQ3cOOqXgXkFbxYifQ96VRFZ3+=wGawYNLQ@mail.gmail.com>
 <20180307104002.GA505@jagdpanzerIV>
 <CAK8P3a3eK4iS9rEWvoRfH75zjj7KHpsPnofoGdWH28Dqbz-UyQ@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CAK8P3a3eK4iS9rEWvoRfH75zjj7KHpsPnofoGdWH28Dqbz-UyQ@mail.gmail.com>
User-Agent: Mutt/1.9.3 (2018-01-21)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On (03/07/18 11:57), Arnd Bergmann wrote:
[..]
> >> Originally I planned to wait a few more releases, but the last maintainer
> >> has commented that he will now send a patch for immediate removal,
> >> so 4.17 is almost certain at this point.
> >
> > Would be great to get it removed as soon as possible then. Otherwise we
> > will get broken blackfin build errors from Stephen (or would need to hold
> > off Dave's patch).
> 
> You could also add a patch to your tree that removes the blackfin
> dump_stack() function, or we could ask Stephen and the other
> people operating build bots to stop building blackfin right now
> (they will have to do that anyway once the arch gets removed).

OK. Petr, Stephen, what would be your preference?

> Since lib/dump_stack.c is mandatory then, I would suggest making it
> obj-y and moving it out of lib/ into kernel/printk/.

Totally agree on obj-y. And tend to agree on moving lib/dump_stack to
kernel/printk. lib/dump_stack depends on CONFIG_PRINTK and is partially
in printk.h. So it _mostly_ seems like the right place after all.

	-ss