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

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Message-ID: <20200917220145.GQ29330@paulmck-ThinkPad-P72>
Date:   Thu, 17 Sep 2020 15:01:45 -0700
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the rcu tree

On Thu, Sep 17, 2020 at 03:19:09PM +1000, Stephen Rothwell wrote:
> Hi all,
> 
> After merging the rcu tree, today's linux-next build (powerpc
> ppc64_defconfig) failed like this:
> 
> In file included from kernel/rcu/update.c:578:
> kernel/rcu/tasks.h:601:20: error: static declaration of 'show_rcu_tasks_classic_gp_kthread' follows non-static declaration
>   601 | static inline void show_rcu_tasks_classic_gp_kthread(void) { }
>       |                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> In file included from kernel/rcu/update.c:49:
> kernel/rcu/rcu.h:537:6: note: previous declaration of 'show_rcu_tasks_classic_gp_kthread' was here
>   537 | void show_rcu_tasks_classic_gp_kthread(void);
>       |      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> Caused by commit
> 
>   675d3ca52626 ("rcutorture: Make grace-period kthread report match RCU flavor being tested")
> 
> I have used the rcu tree from next-20200916 for today.

Please accept my apologies for the hassle!  I believe that I finally
have this straightened out.

Please ignore if you already pulled -rcu for today, as I previously
set rcu/next back to a commit preceding the offending one.

							Thanx, Paul