Re: [PATCH bpf-next v3 2/4] bpf: Implement bpf_local_storage for inodes

From: KP Singh
Date: Thu Jul 09 2020 - 05:44:21 EST


On 09-Jul 12:37, kernel test robot wrote:
> Hi KP,
>
> I love your patch! Perhaps something to improve:
>
> [auto build test WARNING on bpf-next/master]
>
> url: https://github.com/0day-ci/linux/commits/KP-Singh/Generalizing-bpf_local_storage/20200709-085810
> base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
> config: mips-allyesconfig (attached as .config)
> compiler: mips-linux-gcc (GCC) 9.3.0
> 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
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
>
> All warnings (new ones prefixed by >>):
>
> >> kernel/bpf/bpf_inode_storage.c:274:17: warning: no previous prototype for 'inode_storage_map_alloc' [-Wmissing-prototypes]
> 274 | struct bpf_map *inode_storage_map_alloc(union bpf_attr *attr)
> | ^~~~~~~~~~~~~~~~~~~~~~~
> >> kernel/bpf/bpf_inode_storage.c:286:6: warning: no previous prototype for 'inode_storage_map_free' [-Wmissing-prototypes]
> 286 | void inode_storage_map_free(struct bpf_map *map)
> | ^~~~~~~~~~~~~~~~~~~~~~

Thanks! Should have been static. Fixed these. Will send a v4 with
these fixes.

- KP

>
> vim +/inode_storage_map_alloc +274 kernel/bpf/bpf_inode_storage.c
>
> 273
> > 274 struct bpf_map *inode_storage_map_alloc(union bpf_attr *attr)
> 275 {
> 276 struct bpf_local_storage_map *smap;
> 277
> 278 smap = bpf_local_storage_map_alloc(attr);
> 279 if (IS_ERR(smap))
> 280 return ERR_CAST(smap);
> 281
> 282 smap->cache_idx = cache_idx_get_inode();
> 283 return &smap->map;
> 284 }
> 285
> > 286 void inode_storage_map_free(struct bpf_map *map)
> 287 {
> 288 struct bpf_local_storage_map *smap;
> 289
> 290 smap = (struct bpf_local_storage_map *)map;
> 291 cache_idx_free_inode(smap->cache_idx);
> 292 bpf_local_storage_map_free(smap);
> 293 }
> 294
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx