[rcu:dev.2019.03.28a 35/50] ERROR: "kfd_processes_srcu" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!

[rcu:dev.2019.03.28a 35/50] ERROR: "kfd_processes_srcu" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!

[kbuild test robot]

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Hi Paul,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2019.03.28a
head:   ec6530e763046b6bb1f4c2c2aed49ebc68aae2a0
commit: 016b9910f5db3d900066a0c3a8b42855f70bb1cf [35/50] drivers/gpu/drm/amd: Dynamically allocate kfd_processes_srcu
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 8.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 016b9910f5db3d900066a0c3a8b42855f70bb1cf
        # save the attached .config to linux build tree
        GCC_VERSION=8.1.0 make.cross ARCH=ia64 

All errors (new ones prefixed by >>):

   ERROR: "ia64_delay_loop" [drivers/spi/spi-thunderx.ko] undefined!
   ERROR: "__sw_hweight8" [drivers/net/wireless/mediatek/mt76/mt7603/mt7603e.ko] undefined!
   ERROR: "ia64_delay_loop" [drivers/net/phy/mdio-cavium.ko] undefined!
>> ERROR: "kfd_processes_srcu" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined!

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