linux-kernel - Re: [PATCH 4/5] locking/lockdep: Make class->ops a percpu counter

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Date:   Fri, 28 Sep 2018 16:31:06 -0400
From:   Waiman Long <longman@...hat.com>
To:     kbuild test robot <lkp@...el.com>
Cc:     kbuild-all@...org, Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Will Deacon <will.deacon@....com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/5] locking/lockdep: Make class->ops a percpu counter

On 09/28/2018 04:25 PM, kbuild test robot wrote:
> Hi Waiman,
>
> Thank you for the patch! Yet something to improve:
>
> [auto build test ERROR on tip/locking/core]
> [also build test ERROR on v4.19-rc5 next-20180928]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>
> url:    https://github.com/0day-ci/linux/commits/Waiman-Long/locking-lockdep-Remove-add_chain_cache_classes/20180929-031820
> config: i386-randconfig-s2-201838 (attached as .config)
> compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026
> reproduce:
>         # save the attached .config to linux build tree
>         make ARCH=i386 
>
> All errors (new ones prefixed by >>):
>
>    kernel/locking/lockdep_proc.c: In function 'l_show':
>>> kernel/locking/lockdep_proc.c:71:34: error: 'struct lock_class' has no member named 'ops'; did you mean 'pops'?
>      seq_printf(m, " OPS:%8ld", class->ops);
>                                      ^~

OK, I missed the ops reference in lockdep_proc.c which is probably not
built in my debug kernel config. I will fix that in the next version.

-Longman