[kbuild-all] [jolsa-perf:bpf/d_path 2/11] tools/lib/bpf/btf.h:244:24: error: 'BTF_KIND_FUNC' undeclared; did you mean

tree: https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git bpf/d_path head: 686910572925427af4fbcc0fffdff0dd0904de64 commit: 1ebb9a6880b2e1d1ade270367e023cb3ed074b6f [2/11] bpf: Compile btfid tool at kernel compilation start config: x86_64-rhel-7.6-kselftests (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce (this is a W=1 build): git checkout 1ebb9a6880b2e1d1ade270367e023cb3ed074b6f # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All error/warnings (new ones prefixed by >>, old ones prefixed by <<): In file included from btfid.c:51: tools/lib/bpf/btf.h: In function 'btf_kflag': 168 | return BTF_INFO_KFLAG(t->info); | ^~~~~~~~~~~~~~ | BTF_INFO_KIND tools/lib/bpf/btf.h: In function 'btf_is_func': 244 | return btf_kind(t) == BTF_KIND_FUNC; | ^~~~~~~~~~~~~ | BTF_KIND_UNKN tools/lib/bpf/btf.h:244:24: note: each undeclared identifier is reported only once for each function it appears in tools/lib/bpf/btf.h: In function 'btf_is_func_proto': 249 | return btf_kind(t) == BTF_KIND_FUNC_PROTO; | ^~~~~~~~~~~~~~~~~~~ | BTF_KIND_UNION tools/lib/bpf/btf.h: In function 'btf_is_var': 254 | return btf_kind(t) == BTF_KIND_VAR; | ^~~~~~~~~~~~ | BTF_KIND_PTR tools/lib/bpf/btf.h: In function 'btf_is_datasec': 259 | return btf_kind(t) == BTF_KIND_DATASEC; | ^~~~~~~~~~~~~~~~ | BTF_KIND_PTR tools/lib/bpf/btf.h: In function 'btf_member_bit_offset': 299 | return kflag ? BTF_MEMBER_BIT_OFFSET(m->offset) : m->offset; | ^~~~~~~~~~~~~~~~~~~~~ tools/lib/bpf/btf.h: In function 'btf_member_bitfield_size': 311 | return kflag ? BTF_MEMBER_BITFIELD_SIZE(m->offset) : 0; | ^~~~~~~~~~~~~~~~~~~~~~~~ btfid.c: In function 'symbols_resolve': 443 | if (BTF_INFO_KIND(type->info) == BTF_KIND_FUNC && nr_funcs) { | ^~~~~~~~~~~~~ | BTF_KIND_UNKN mv: cannot stat 'tools/bpf/btfid/.btfid.o.tmp': No such file or directory make[4]: *** [tools/build/Makefile.build:97: tools/bpf/btfid/btfid.o] Error 1 make[4]: Target '__build' not remade because of errors. make[3]: *** [Makefile:59: tools/bpf/btfid/btfid-in.o] Error 2 make[3]: Target 'all' not remade because of errors. make[2]: *** [Makefile:71: bpf/btfid] Error 2 make[1]: *** [Makefile:1892: tools/bpf/btfid] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:185: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. vim +244 tools/lib/bpf/btf.h ef20a9b27c66278 Andrii Nakryiko 2019-08-07 165 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 166 static inline bool btf_kflag(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 167 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 @168 return BTF_INFO_KFLAG(t->info); ef20a9b27c66278 Andrii Nakryiko 2019-08-07 169 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 170 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 171 static inline bool btf_is_int(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 172 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 173 return btf_kind(t) == BTF_KIND_INT; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 174 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 175 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 176 static inline bool btf_is_ptr(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 177 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 178 return btf_kind(t) == BTF_KIND_PTR; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 179 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 180 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 181 static inline bool btf_is_array(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 182 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 183 return btf_kind(t) == BTF_KIND_ARRAY; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 184 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 185 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 186 static inline bool btf_is_struct(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 187 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 188 return btf_kind(t) == BTF_KIND_STRUCT; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 189 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 190 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 191 static inline bool btf_is_union(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 192 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 193 return btf_kind(t) == BTF_KIND_UNION; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 194 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 195 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 196 static inline bool btf_is_composite(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 197 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 198 __u16 kind = btf_kind(t); ef20a9b27c66278 Andrii Nakryiko 2019-08-07 199 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 200 return kind == BTF_KIND_STRUCT || kind == BTF_KIND_UNION; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 201 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 202 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 203 static inline bool btf_is_enum(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 204 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 205 return btf_kind(t) == BTF_KIND_ENUM; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 206 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 207 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 208 static inline bool btf_is_fwd(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 209 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 210 return btf_kind(t) == BTF_KIND_FWD; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 211 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 212 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 213 static inline bool btf_is_typedef(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 214 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 215 return btf_kind(t) == BTF_KIND_TYPEDEF; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 216 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 217 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 218 static inline bool btf_is_volatile(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 219 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 220 return btf_kind(t) == BTF_KIND_VOLATILE; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 221 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 222 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 223 static inline bool btf_is_const(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 224 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 225 return btf_kind(t) == BTF_KIND_CONST; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 226 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 227 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 228 static inline bool btf_is_restrict(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 229 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 230 return btf_kind(t) == BTF_KIND_RESTRICT; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 231 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 232 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 233 static inline bool btf_is_mod(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 234 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 235 __u16 kind = btf_kind(t); ef20a9b27c66278 Andrii Nakryiko 2019-08-07 236 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 237 return kind == BTF_KIND_VOLATILE || ef20a9b27c66278 Andrii Nakryiko 2019-08-07 238 kind == BTF_KIND_CONST || ef20a9b27c66278 Andrii Nakryiko 2019-08-07 239 kind == BTF_KIND_RESTRICT; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 240 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 241 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 242 static inline bool btf_is_func(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 243 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 @244 return btf_kind(t) == BTF_KIND_FUNC; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 245 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 246 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 247 static inline bool btf_is_func_proto(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 248 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 @249 return btf_kind(t) == BTF_KIND_FUNC_PROTO; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 250 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 251 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 252 static inline bool btf_is_var(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 253 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 @254 return btf_kind(t) == BTF_KIND_VAR; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 255 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 256 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 257 static inline bool btf_is_datasec(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 258 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 @259 return btf_kind(t) == BTF_KIND_DATASEC; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 260 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 261 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 262 static inline __u8 btf_int_encoding(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 263 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 264 return BTF_INT_ENCODING(*(__u32 *)(t + 1)); ef20a9b27c66278 Andrii Nakryiko 2019-08-07 265 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 266 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 267 static inline __u8 btf_int_offset(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 268 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 269 return BTF_INT_OFFSET(*(__u32 *)(t + 1)); ef20a9b27c66278 Andrii Nakryiko 2019-08-07 270 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 271 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 272 static inline __u8 btf_int_bits(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 273 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 274 return BTF_INT_BITS(*(__u32 *)(t + 1)); ef20a9b27c66278 Andrii Nakryiko 2019-08-07 275 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 276 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 277 static inline struct btf_array *btf_array(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 278 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 279 return (struct btf_array *)(t + 1); ef20a9b27c66278 Andrii Nakryiko 2019-08-07 280 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 281 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 282 static inline struct btf_enum *btf_enum(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 283 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 284 return (struct btf_enum *)(t + 1); ef20a9b27c66278 Andrii Nakryiko 2019-08-07 285 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 286 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 287 static inline struct btf_member *btf_members(const struct btf_type *t) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 288 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 289 return (struct btf_member *)(t + 1); ef20a9b27c66278 Andrii Nakryiko 2019-08-07 290 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 291 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 292 /* Get bit offset of a member with specified index. */ ef20a9b27c66278 Andrii Nakryiko 2019-08-07 293 static inline __u32 btf_member_bit_offset(const struct btf_type *t, ef20a9b27c66278 Andrii Nakryiko 2019-08-07 294 __u32 member_idx) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 295 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 296 const struct btf_member *m = btf_members(t) + member_idx; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 297 bool kflag = btf_kflag(t); ef20a9b27c66278 Andrii Nakryiko 2019-08-07 298 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 @299 return kflag ? BTF_MEMBER_BIT_OFFSET(m->offset) : m->offset; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 300 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 301 /* ef20a9b27c66278 Andrii Nakryiko 2019-08-07 302 * Get bitfield size of a member, assuming t is BTF_KIND_STRUCT or ef20a9b27c66278 Andrii Nakryiko 2019-08-07 303 * BTF_KIND_UNION. If member is not a bitfield, zero is returned. ef20a9b27c66278 Andrii Nakryiko 2019-08-07 304 */ ef20a9b27c66278 Andrii Nakryiko 2019-08-07 305 static inline __u32 btf_member_bitfield_size(const struct btf_type *t, ef20a9b27c66278 Andrii Nakryiko 2019-08-07 306 __u32 member_idx) ef20a9b27c66278 Andrii Nakryiko 2019-08-07 307 { ef20a9b27c66278 Andrii Nakryiko 2019-08-07 308 const struct btf_member *m = btf_members(t) + member_idx; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 309 bool kflag = btf_kflag(t); ef20a9b27c66278 Andrii Nakryiko 2019-08-07 310 ef20a9b27c66278 Andrii Nakryiko 2019-08-07 @311 return kflag ? BTF_MEMBER_BITFIELD_SIZE(m->offset) : 0; ef20a9b27c66278 Andrii Nakryiko 2019-08-07 312 } ef20a9b27c66278 Andrii Nakryiko 2019-08-07 313 :::::: The code at line 244 was first introduced by commit :::::: ef20a9b27c66278ac2f85006db8ea11d5f61a781 libbpf: add helpers for working with BTF types :::::: TO: Andrii Nakryiko <andriin(a)fb.com&gt; :::::: CC: Alexei Starovoitov <ast(a)kernel.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org