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SubjectRe: [PATCH bpf-next v2 01/10] bpf: btf: Make some of the API visible outside BTF
Hi KP,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on next-20200116]
[cannot apply to bpf-next/master bpf/master linus/master security/next-testing v5.5-rc6 v5.5-rc5 v5.5-rc4 v5.5-rc6]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url: https://github.com/0day-ci/linux/commits/KP-Singh/MAC-and-Audit-policy-using-eBPF-KRSI/20200117-070342
base: 2747d5fdab78f43210256cd52fb2718e0b3cce74
config: nds32-defconfig (attached as .config)
compiler: nds32le-linux-gcc (GCC) 9.2.0
reproduce:
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
GCC_VERSION=9.2.0 make.cross ARCH=nds32

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

All errors (new ones prefixed by >>):

In file included from kernel/bpf/core.c:27:
>> include/linux/btf.h:148:38: error: static declaration of 'btf_type_by_name_kind' follows non-static declaration
148 | static inline const struct btf_type *btf_type_by_name_kind(
| ^~~~~~~~~~~~~~~~~~~~~
include/linux/btf.h:70:24: note: previous declaration of 'btf_type_by_name_kind' was here
70 | const struct btf_type *btf_type_by_name_kind(
| ^~~~~~~~~~~~~~~~~~~~~

vim +/btf_type_by_name_kind +148 include/linux/btf.h

136
137 #ifdef CONFIG_BPF_SYSCALL
138 const struct btf_type *btf_type_by_id(const struct btf *btf, u32 type_id);
139 const char *btf_name_by_offset(const struct btf *btf, u32 offset);
140 struct btf *btf_parse_vmlinux(void);
141 struct btf *bpf_prog_get_target_btf(const struct bpf_prog *prog);
142 #else
143 static inline const struct btf_type *btf_type_by_id(const struct btf *btf,
144 u32 type_id)
145 {
146 return NULL;
147 }
> 148 static inline const struct btf_type *btf_type_by_name_kind(
149 struct btf *btf, const char *name, u8 kind)
150 {
151 return ERR_PTR(-EOPNOTSUPP);
152 }
153 static inline const char *btf_name_by_offset(const struct btf *btf,
154 u32 offset)
155 {
156 return NULL;
157 }
158 #endif
159

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation
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