linux-kernel - [PATCH v2 05/26] modpost: add sym_add

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Message-Id: <20220501084032.1025918-6-masahiroy@kernel.org>
Date:   Sun,  1 May 2022 17:40:11 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     linux-kbuild@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Masahiro Yamada <masahiroy@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Michal Marek <michal.lkml@...kovi.net>
Subject: [PATCH v2 05/26] modpost: add sym_add_unresolved() helper

Add a small helper, sym_add_unresolved() to ease the further
refactoring.

Remove the 'weak' argument from alloc_symbol() because it is sensible
only for unresolved symbols.

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com>
---

(no changes since v1)

 scripts/mod/modpost.c | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 553e5cf88fee..abcdb0677775 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -236,14 +236,12 @@ static inline unsigned int tdb_hash(const char *name)
  * Allocate a new symbols for use in the hash of exported symbols or
  * the list of unresolved symbols per module
  **/
-static struct symbol *alloc_symbol(const char *name, bool weak,
-				   struct symbol *next)
+static struct symbol *alloc_symbol(const char *name, struct symbol *next)
 {
 	struct symbol *s = NOFAIL(malloc(sizeof(*s) + strlen(name) + 1));
 
 	memset(s, 0, sizeof(*s));
 	strcpy(s->name, name);
-	s->weak = weak;
 	s->next = next;
 	s->is_static = true;
 	return s;
@@ -256,11 +254,17 @@ static struct symbol *new_symbol(const char *name, struct module *module,
 	unsigned int hash;
 
 	hash = tdb_hash(name) % SYMBOL_HASH_SIZE;
-	symbolhash[hash] = alloc_symbol(name, false, symbolhash[hash]);
+	symbolhash[hash] = alloc_symbol(name, symbolhash[hash]);
 
 	return symbolhash[hash];
 }
 
+static void sym_add_unresolved(const char *name, struct module *mod, bool weak)
+{
+	mod->unres = alloc_symbol(name, mod->unres);
+	mod->unres->weak = weak;
+}
+
 static struct symbol *find_symbol(const char *name)
 {
 	struct symbol *s;
@@ -712,9 +716,8 @@ static void handle_symbol(struct module *mod, struct elf_info *info,
 			}
 		}
 
-		mod->unres = alloc_symbol(symname,
-					  ELF_ST_BIND(sym->st_info) == STB_WEAK,
-					  mod->unres);
+		sym_add_unresolved(symname, mod,
+				   ELF_ST_BIND(sym->st_info) == STB_WEAK);
 		break;
 	default:
 		/* All exported symbols */
@@ -2082,7 +2085,7 @@ static void read_symbols(const char *modname)
 	 * the automatic versioning doesn't pick it up, but it's really
 	 * important anyhow */
 	if (modversions)
-		mod->unres = alloc_symbol("module_layout", false, mod->unres);
+		sym_add_unresolved("module_layout", mod, false);
 }
 
 static void read_symbols_from_files(const char *filename)
-- 
2.32.0