[tip: objtool/core] objtool: Add is_alias_sym() helper

["tip-bot2 for Josh Poimboeuf" <tip-bot2@linutronix.de>]

The following commit has been merged into the objtool/core branch of tip:

Commit-ID:     8eebd573113362ef3a3c75f166a83ee060dae11b
Gitweb:        https://git.kernel.org/tip/8eebd573113362ef3a3c75f166a83ee060dae11b
Author:        Josh Poimboeuf <jpoimboe@kernel.org>
AuthorDate:    Wed, 18 Mar 2026 15:42:30 -07:00
Committer:     Josh Poimboeuf <jpoimboe@kernel.org>
CommitterDate: Mon, 04 May 2026 21:16:05 -07:00

objtool: Add is_alias_sym() helper

Improve readability with a new is_alias_sym() helper.

No functional changes intended.

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Song Liu <song@kernel.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
---
 tools/objtool/check.c               | 6 +++---
 tools/objtool/include/objtool/elf.h | 5 +++++
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index f020f21..6c94eb3 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -491,7 +491,7 @@ static int decode_instructions(struct objtool_file *file)
 				return -1;
 			}
 
-			if (func->embedded_insn || func->alias != func)
+			if (func->embedded_insn || is_alias_sym(func))
 				continue;
 
 			if (!find_insn(file, sec, func->offset)) {
@@ -2229,7 +2229,7 @@ static int add_jump_table_alts(struct objtool_file *file)
 		return 0;
 
 	for_each_sym(file->elf, func) {
-		if (!is_func_sym(func) || func->alias != func)
+		if (!is_func_sym(func) || is_alias_sym(func))
 			continue;
 
 		mark_func_jump_tables(file, func);
@@ -4523,7 +4523,7 @@ static int validate_symbol(struct objtool_file *file, struct section *sec,
 		return 1;
 	}
 
-	if (sym->pfunc != sym || sym->alias != sym)
+	if (sym->pfunc != sym || is_alias_sym(sym))
 		return 0;
 
 	insn = find_insn(file, sec, sym->offset);
diff --git a/tools/objtool/include/objtool/elf.h b/tools/objtool/include/objtool/elf.h
index 8a543ce..ccc72a6 100644
--- a/tools/objtool/include/objtool/elf.h
+++ b/tools/objtool/include/objtool/elf.h
@@ -298,6 +298,11 @@ static inline bool is_local_sym(struct symbol *sym)
 	return sym->bind == STB_LOCAL;
 }
 
+static inline bool is_alias_sym(struct symbol *sym)
+{
+	return sym->alias != sym;
+}
+
 static inline bool is_prefix_func(struct symbol *sym)
 {
 	return sym->prefix;