Re: [PATCH v2 bpf-next 4/5] bpf: Add a bpf_getxattr kfunc

[kernel test robot <lkp@intel.com>]

Hi KP,

I love your patch! Perhaps something to improve:

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

url:    https://github.com/intel-lab-lkp/linux/commits/KP-Singh/Add-bpf_getxattr/20220621-093013
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: x86_64-randconfig-a015-20220620 (https://download.01.org/0day-ci/archive/20220621/202206211035.p3LxbVfK-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project af6d2a0b6825e71965f3e2701a63c239fa0ad70f)
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/dd49d2ffb18adceafa98bd517008f59aa9bc910b
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review KP-Singh/Add-bpf_getxattr/20220621-093013
        git checkout dd49d2ffb18adceafa98bd517008f59aa9bc910b
        # 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=x86_64 SHELL=/bin/bash kernel/trace/

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

All warnings (new ones prefixed by >>):

>> kernel/trace/bpf_trace.c:1185:25: warning: no previous prototype for function 'bpf_getxattr' [-Wmissing-prototypes]
   noinline __weak ssize_t bpf_getxattr(struct dentry *dentry, struct inode *inode,
                           ^
   kernel/trace/bpf_trace.c:1185:17: note: declare 'static' if the function is not intended to be used outside of this translation unit
   noinline __weak ssize_t bpf_getxattr(struct dentry *dentry, struct inode *inode,
                   ^
                   static 
   1 warning generated.


vim +/bpf_getxattr +1185 kernel/trace/bpf_trace.c

  1184	
> 1185	noinline __weak ssize_t bpf_getxattr(struct dentry *dentry, struct inode *inode,
  1186					     const char *name, void *value, int size)
  1187	{
  1188		return __vfs_getxattr(dentry, inode, name, value, size);
  1189	}
  1190	

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