linux-kernel - Re: [rcu:dev.2019.03.27a 35/46] ERROR: "kfd_processes_srcu" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!

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Date:   Thu, 28 Mar 2019 13:48:21 -0700
From:   "Paul E. McKenney" <paulmck@...ux.ibm.com>
To:     kbuild test robot <lkp@...el.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org
Subject: Re: [rcu:dev.2019.03.27a 35/46] ERROR: "kfd_processes_srcu"
 [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!

On Fri, Mar 29, 2019 at 04:11:48AM +0800, kbuild test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2019.03.27a
> head:   3833875fa13a3f442252a48784a18f27879a4551
> commit: 016b9910f5db3d900066a0c3a8b42855f70bb1cf [35/46] drivers/gpu/drm/amd: Dynamically allocate kfd_processes_srcu
> config: x86_64-rhel-7.6 (attached as .config)
> compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
> reproduce:
>         git checkout 016b9910f5db3d900066a0c3a8b42855f70bb1cf
>         # save the attached .config to linux build tree
>         make ARCH=x86_64 
> 
> All errors (new ones prefixed by >>):
> 
> >> ERROR: "kfd_processes_srcu" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!

When I drop your .config into my source tree, do an oldconfig, and then
build, it creates amdgpu.ko without complaint.  What else should I be
doing to try to reproduce this?

							Thanx, Paul