[PATCH 31/48] objtool: Add is_alias_sym() helper

Josh Poimboeuf
2026-04-23T04:04:39Z

Improve readability with a new is_alias_sym() helper.

No functional changes intended.

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 54ceac857979..4c18d6e7f6c3 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);
@@ -4527,7 +4527,7 @@ 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 cd5844c7b4e2..3abe4cbc584c 100644
--- a/tools/objtool/include/objtool/elf.h
+++ b/tools/objtool/include/objtool/elf.h
@@ -279,6 +279,11 @@ 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;
--
2.53.0