linux-kernel - Re: [PATCH bpf-next] bpf: fix bpf compile error caused by CONFIG_CGROUP

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Date:   Wed, 20 Jul 2022 15:16:16 +0800
From:   kernel test robot <lkp@...el.com>
To:     Xu Jia <xujia39@...wei.com>, sdf@...gle.com,
        netdev@...r.kernel.org, bpf@...r.kernel.org
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, ast@...nel.org, daniel@...earbox.net,
        andrii@...nel.org, xujia39@...wei.com
Subject: Re: [PATCH bpf-next] bpf: fix bpf compile error caused by
 CONFIG_CGROUP_BPF

Hi Xu,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Xu-Jia/bpf-fix-bpf-compile-error-caused-by-CONFIG_CGROUP_BPF/20220719-165058
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: i386-randconfig-a005-20220718 (https://download.01.org/0day-ci/archive/20220720/202207201518.zmoBBoB6-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project dd5635541cd7bbd62cd59b6694dfb759b6e9a0d8)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/cfd7055cd0be7cfd0de5c24a84c29afe0611cb6c
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Xu-Jia/bpf-fix-bpf-compile-error-caused-by-CONFIG_CGROUP_BPF/20220719-165058
        git checkout cfd7055cd0be7cfd0de5c24a84c29afe0611cb6c
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/ufs/core/ kernel/bpf/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> kernel/bpf/trampoline.c:526:34: warning: unused variable 'bpf_shim_tramp_link_lops' [-Wunused-const-variable]
   static const struct bpf_link_ops bpf_shim_tramp_link_lops = {
                                    ^
   1 warning generated.


vim +/bpf_shim_tramp_link_lops +526 kernel/bpf/trampoline.c

69fd337a975c7e Stanislav Fomichev 2022-06-28  525  
69fd337a975c7e Stanislav Fomichev 2022-06-28 @526  static const struct bpf_link_ops bpf_shim_tramp_link_lops = {
69fd337a975c7e Stanislav Fomichev 2022-06-28  527  	.release = bpf_shim_tramp_link_release,
69fd337a975c7e Stanislav Fomichev 2022-06-28  528  	.dealloc = bpf_shim_tramp_link_dealloc,
69fd337a975c7e Stanislav Fomichev 2022-06-28  529  };
69fd337a975c7e Stanislav Fomichev 2022-06-28  530  

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp