[for-next][PATCH 01/16] bpf: Make btf_get_module_btf() and btf_relocate_id() non-static

[Steven Rostedt]

From: Mykyta Yatsenko <yatsenko@xxxxxxxx>

Drop the static qualifier and add prototypes to <linux/btf.h> so the
tracing core can look up module BTF and translate ids stored by
resolve_btfids (which are local to a module's split BTF) into the
runtime ids used by the kernel.

Used by the upcoming events/<sys>/<event>/btf_ids tracefs interface.

Link: https://patch.msgid.link/20260518-generic_tracepoint-v2-1-b755a5cf67bb@xxxxxxxx
Signed-off-by: Mykyta Yatsenko <yatsenko@xxxxxxxx>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
 include/linux/btf.h | 2 ++
 kernel/bpf/btf.c    | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/linux/btf.h b/include/linux/btf.h
index c09b7994de4e..8f8d3f7a8929 100644
--- a/include/linux/btf.h
+++ b/include/linux/btf.h
@@ -235,6 +235,8 @@ int btf_check_and_fixup_fields(const struct btf *btf, struct btf_record *rec);
 bool btf_type_is_void(const struct btf_type *t);
 s32 btf_find_by_name_kind(const struct btf *btf, const char *name, u8 kind);
 s32 bpf_find_btf_id(const char *name, u32 kind, struct btf **btf_p);
+struct btf *btf_get_module_btf(const struct module *module);
+__u32 btf_relocate_id(const struct btf *btf, __u32 id);
 const struct btf_type *btf_type_skip_modifiers(const struct btf *btf,
 					       u32 id, u32 *res_id);
 const struct btf_type *btf_type_resolve_ptr(const struct btf *btf,
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index c4673a54c4ba..3dbf33c0799a 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -6467,7 +6467,7 @@ struct btf *btf_parse_vmlinux(void)
  * split BTF ids will need to be mapped to actual base/split ids for
  * BTF now that it has been relocated.
  */
-static __u32 btf_relocate_id(const struct btf *btf, __u32 id)
+__u32 btf_relocate_id(const struct btf *btf, __u32 id)
 {
 	if (!btf->base_btf || !btf->base_id_map)
 		return id;
@@ -8630,7 +8630,7 @@ struct module *btf_try_get_module(const struct btf *btf)
 /* Returns struct btf corresponding to the struct module.
  * This function can return NULL or ERR_PTR.
  */
-static struct btf *btf_get_module_btf(const struct module *module)
+struct btf *btf_get_module_btf(const struct module *module)
 {
 #ifdef CONFIG_DEBUG_INFO_BTF_MODULES
 	struct btf_module *btf_mod, *tmp;
-- 
2.53.0