linux-kernel - [PATCH 3/3] kconfig: use menu_for_each

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Message-Id: <20240310141619.606415-3-masahiroy@kernel.org>
Date: Sun, 10 Mar 2024 23:16:19 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: linux-kbuild@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	Masahiro Yamada <masahiroy@...nel.org>
Subject: [PATCH 3/3] kconfig: use menu_for_each_entry() to traverse menu tree

Use menu_for_each_entry() to traverse the menu tree instead of
implementing similar logic in each function.

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

 scripts/kconfig/confdata.c | 29 +++++------------------------
 scripts/kconfig/parser.y   | 15 +--------------
 2 files changed, 6 insertions(+), 38 deletions(-)

diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 0e35c4819cf1..16066730a6a0 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -784,7 +784,6 @@ static void print_symbol_for_rustccfg(FILE *fp, struct symbol *sym)
 int conf_write_defconfig(const char *filename)
 {
 	struct symbol *sym;
-	struct menu *menu;
 	FILE *out;
 
 	out = fopen(filename, "w");
@@ -793,23 +792,19 @@ int conf_write_defconfig(const char *filename)
 
 	sym_clear_all_valid();
 
-	/* Traverse all menus to find all relevant symbols */
-	menu = rootmenu.list;
-
-	while (menu != NULL)
-	{
+	menu_for_each_entry(menu) {
 		sym = menu->sym;
 		if (sym && !sym_is_choice(sym)) {
 			sym_calc_value(sym);
 			if (!(sym->flags & SYMBOL_WRITE))
-				goto next_menu;
+				continue;
 			sym->flags &= ~SYMBOL_WRITE;
 			/* If we cannot change the symbol - skip */
 			if (!sym_is_changeable(sym))
-				goto next_menu;
+				continue;
 			/* If symbol equals to default value - skip */
 			if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
-				goto next_menu;
+				continue;
 
 			/*
 			 * If symbol is a choice value and equals to the
@@ -827,25 +822,11 @@ int conf_write_defconfig(const char *filename)
 				if (!sym_is_optional(cs) && sym == ds) {
 					if ((sym->type == S_BOOLEAN) &&
 					    sym_get_tristate_value(sym) == yes)
-						goto next_menu;
+						continue;
 				}
 			}
 			print_symbol_for_dotconfig(out, sym);
 		}
-next_menu:
-		if (menu->list != NULL) {
-			menu = menu->list;
-		}
-		else if (menu->next != NULL) {
-			menu = menu->next;
-		} else {
-			while ((menu = menu->parent)) {
-				if (menu->next != NULL) {
-					menu = menu->next;
-					break;
-				}
-			}
-		}
 	}
 	fclose(out);
 	return 0;
diff --git a/scripts/kconfig/parser.y b/scripts/kconfig/parser.y
index b45bfaf0a02b..a69a453e4f44 100644
--- a/scripts/kconfig/parser.y
+++ b/scripts/kconfig/parser.y
@@ -473,8 +473,6 @@ assign_val:
 
 void conf_parse(const char *name)
 {
-	struct menu *menu;
-
 	autoconf_cmd = str_new();
 
 	str_printf(&autoconf_cmd, "\ndeps_config := \\\n");
@@ -517,20 +515,9 @@ void conf_parse(const char *name)
 
 	menu_finalize(&rootmenu);
 
-	menu = &rootmenu;
-	while (menu) {
+	menu_for_each_entry(menu) {
 		if (menu->sym && sym_check_deps(menu->sym))
 			yynerrs++;
-
-		if (menu->list) {
-			menu = menu->list;
-			continue;
-		}
-
-		while (!menu->next && menu->parent)
-			menu = menu->parent;
-
-		menu = menu->next;
 	}
 
 	if (yynerrs)
-- 
2.40.1