linux-kernel - [PATCH 6/7] modpost: merge sym_update_namespace() into sym_add

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Message-Id: <20220610183236.1272216-7-masahiroy@kernel.org>
Date:   Sat, 11 Jun 2022 03:32:35 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     linux-kbuild@...r.kernel.org
Cc:     Al Viro <viro@...iv.linux.org.uk>,
        Nicolas Pitre <npitre@...libre.com>,
        Luis Chamberlain <mcgrof@...nel.org>,
        linux-modules@...r.kernel.org, Ard Biesheuvel <ardb@...nel.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 6/7] modpost: merge sym_update_namespace() into sym_add_exported()

Pass a set of the name, license, and namespace to sym_add_exported().

sym_update_namespace() is unneeded.

Signed-off-by: Masahiro Yamada <masahiroy@...nel.org>
---

 scripts/mod/modpost.c | 41 +++++++++--------------------------------
 1 file changed, 9 insertions(+), 32 deletions(-)

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index f738dddde7b8..0db2cbb74a2a 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -357,26 +357,8 @@ static const char *sec_name_of_symbol(const struct elf_info *info,
 
 #define strstarts(str, prefix) (strncmp(str, prefix, strlen(prefix)) == 0)
 
-static void sym_update_namespace(const char *symname, const char *namespace)
-{
-	struct symbol *s = find_symbol(symname);
-
-	/*
-	 * That symbol should have been created earlier and thus this is
-	 * actually an assertion.
-	 */
-	if (!s) {
-		error("Could not update namespace(%s) for symbol %s\n",
-		      namespace, symname);
-		return;
-	}
-
-	free(s->namespace);
-	s->namespace = namespace[0] ? NOFAIL(strdup(namespace)) : NULL;
-}
-
 static struct symbol *sym_add_exported(const char *name, struct module *mod,
-				       bool gpl_only)
+				       bool gpl_only, const char *namespace)
 {
 	struct symbol *s = find_symbol(name);
 
@@ -389,6 +371,7 @@ static struct symbol *sym_add_exported(const char *name, struct module *mod,
 	s = alloc_symbol(name);
 	s->module = mod;
 	s->is_gpl_only = gpl_only;
+	s->namespace = namespace[0] ? NOFAIL(strdup(namespace)) : NULL;
 	list_add_tail(&s->list, &mod->exported_symbols);
 	hash_add_symbol(s);
 
@@ -658,17 +641,12 @@ static void handle_symbol(struct module *mod, struct elf_info *info,
 		break;
 	default:
 		if (sym->st_shndx == info->export_symbol_sec) {
-			const char *name;
-
-			if (strstarts(symname, "__export_symbol_gpl.")) {
-				name = symname + strlen("__export_symbol_gpl.");
-				sym_add_exported(name, mod, true);
-				sym_update_namespace(name, sym_get_data(info, sym));
-			} else if (strstarts(symname, "__export_symbol.")) {
-				name = symname + strlen("__export_symbol.");
-				sym_add_exported(name, mod, false);
-				sym_update_namespace(name, sym_get_data(info, sym));
-			}
+			if (strstarts(symname, "__export_symbol_gpl."))
+				sym_add_exported(symname + strlen("__export_symbol_gpl."),
+						 mod, true, sym_get_data(info, sym));
+			else if (strstarts(symname, "__export_symbol."))
+				sym_add_exported(symname + strlen("__export_symbol."),
+						 mod, false, sym_get_data(info, sym));
 
 			break;
 		}
@@ -2470,9 +2448,8 @@ static void read_dump(const char *fname)
 			mod = new_module(modname, strlen(modname));
 			mod->from_dump = true;
 		}
-		s = sym_add_exported(symname, mod, gpl_only);
+		s = sym_add_exported(symname, mod, gpl_only, namespace);
 		sym_set_crc(s, crc);
-		sym_update_namespace(symname, namespace);
 	}
 	free(buf);
 	return;
-- 
2.32.0