This commit fixes linker errors along the lines of:
s390-linux-ld: task_iter.c:(.init.text+0xa4): undefined reference to `btf_task_struct_ids'`
Fix by defining btf_task_struct_ids unconditionally in kernel/bpf/btf.c
since there exists code that unconditionally uses btf_task_struct_ids.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Daniel Xu <dxu@dxuuu.xyz>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/05d94748d9f4b3eecedc4fddd6875418a396e23c.1629942444.git.dxu@dxuuu.xyz
#define BTF_ID_UNUSED
#define BTF_ID_LIST_GLOBAL(name) u32 name[1];
#define BTF_ID_LIST_SINGLE(name, prefix, typename) static u32 name[1];
+#define BTF_ID_LIST_GLOBAL_SINGLE(name, prefix, typename) u32 name[1];
#define BTF_SET_START(name) static struct btf_id_set name = { 0 };
#define BTF_SET_START_GLOBAL(name) static struct btf_id_set name = { 0 };
#define BTF_SET_END(name)
.arg3_type = ARG_ANYTHING,
.arg4_type = ARG_ANYTHING,
};
+
+BTF_ID_LIST_GLOBAL_SINGLE(btf_task_struct_ids, struct, task_struct)
return (unsigned long) current;
}
-BTF_ID_LIST_GLOBAL_SINGLE(btf_task_struct_ids, struct, task_struct)
-
const struct bpf_func_proto bpf_get_current_task_btf_proto = {
.func = bpf_get_current_task_btf,
.gpl_only = true,