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-rw-r--r--Documentation/kbuild/kconfig-language.rst5
-rw-r--r--Documentation/kbuild/kconfig.rst8
-rw-r--r--init/Kconfig9
-rw-r--r--scripts/kconfig/Makefile10
-rw-r--r--scripts/kconfig/confdata.c38
-rw-r--r--scripts/kconfig/expr.h1
-rw-r--r--scripts/kconfig/lexer.l1
-rw-r--r--scripts/kconfig/lkc.h1
-rw-r--r--scripts/kconfig/menu.c9
-rw-r--r--scripts/kconfig/parser.y6
-rw-r--r--scripts/kconfig/symbol.c1
-rw-r--r--scripts/kconfig/tests/conftest.py4
12 files changed, 50 insertions, 43 deletions
diff --git a/Documentation/kbuild/kconfig-language.rst b/Documentation/kbuild/kconfig-language.rst
index 226ae072da7d..3cbccfc42798 100644
--- a/Documentation/kbuild/kconfig-language.rst
+++ b/Documentation/kbuild/kconfig-language.rst
@@ -229,11 +229,6 @@ applicable everywhere (see syntax).
which can modify the behaviour of the menu entry and its config
symbol. These options are currently possible:
- - "defconfig_list"
- This declares a list of default entries which can be used when
- looking for the default configuration (which is used when the main
- .config doesn't exists yet.)
-
- "modules"
This declares the symbol to be used as the MODULES symbol, which
enables the third modular state for all config symbols.
diff --git a/Documentation/kbuild/kconfig.rst b/Documentation/kbuild/kconfig.rst
index dce6801d66c9..5967c79c3baa 100644
--- a/Documentation/kbuild/kconfig.rst
+++ b/Documentation/kbuild/kconfig.rst
@@ -41,6 +41,14 @@ KCONFIG_CONFIG
This environment variable can be used to specify a default kernel config
file name to override the default name of ".config".
+KCONFIG_DEFCONFIG_LIST
+----------------------
+
+This environment variable specifies a list of config files which can be used
+as a base configuration in case the .config does not exist yet. Entries in
+the list are separated with whitespaces to each other, and the first one
+that exists is used.
+
KCONFIG_OVERWRITECONFIG
-----------------------
If you set KCONFIG_OVERWRITECONFIG in the environment, Kconfig will not
diff --git a/init/Kconfig b/init/Kconfig
index 5f5c776ef192..8578c6009674 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1,13 +1,4 @@
# SPDX-License-Identifier: GPL-2.0-only
-config DEFCONFIG_LIST
- string
- depends on !UML
- option defconfig_list
- default "/lib/modules/$(shell,uname -r)/.config"
- default "/etc/kernel-config"
- default "/boot/config-$(shell,uname -r)"
- default "arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)"
-
config CC_VERSION_TEXT
string
default "$(CC_VERSION_TEXT)"
diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 8c19b82c6035..31c5735663c8 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -13,6 +13,16 @@ ifeq ($(quiet),silent_)
silent := -s
endif
+export KCONFIG_DEFCONFIG_LIST :=
+ifneq ($(SRCARCH),um)
+kernel-release := $(shell uname -r)
+KCONFIG_DEFCONFIG_LIST := \
+ /lib/modules/$(kernel-release)/.config \
+ /etc/kernel-config \
+ /boot/config-$(kernel-release) \
+ arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG)
+endif
+
# We need this, in case the user has it in its environment
unexport CONFIG_
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 198f70957fbf..f3998d5ddd02 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -360,28 +360,46 @@ int conf_read_simple(const char *name, int def)
if (name) {
in = zconf_fopen(name);
} else {
- struct property *prop;
+ char *env;
name = conf_get_configname();
in = zconf_fopen(name);
if (in)
goto load;
sym_add_change_count(1);
- if (!sym_defconfig_list)
+
+ env = getenv("KCONFIG_DEFCONFIG_LIST");
+ if (!env)
return 1;
- for_all_defaults(sym_defconfig_list, prop) {
- if (expr_calc_value(prop->visible.expr) == no ||
- prop->expr->type != E_SYMBOL)
- continue;
- sym_calc_value(prop->expr->left.sym);
- name = sym_get_string_value(prop->expr->left.sym);
- in = zconf_fopen(name);
+ while (1) {
+ bool is_last;
+
+ while (isspace(*env))
+ env++;
+
+ if (!*env)
+ break;
+
+ p = env;
+ while (*p && !isspace(*p))
+ p++;
+
+ is_last = (*p == '\0');
+
+ *p = '\0';
+
+ in = zconf_fopen(env);
if (in) {
conf_message("using defaults found in %s",
- name);
+ env);
goto load;
}
+
+ if (is_last)
+ break;
+
+ env = p + 1;
}
}
if (!in)
diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
index bbca80a0dc24..dc17152b1f14 100644
--- a/scripts/kconfig/expr.h
+++ b/scripts/kconfig/expr.h
@@ -287,7 +287,6 @@ struct file *lookup_file(const char *name);
extern struct symbol symbol_yes, symbol_no, symbol_mod;
extern struct symbol *modules_sym;
-extern struct symbol *sym_defconfig_list;
extern int cdebug;
struct expr *expr_alloc_symbol(struct symbol *sym);
struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
diff --git a/scripts/kconfig/lexer.l b/scripts/kconfig/lexer.l
index 9c22cb554673..e918950f94a6 100644
--- a/scripts/kconfig/lexer.l
+++ b/scripts/kconfig/lexer.l
@@ -99,7 +99,6 @@ n [A-Za-z0-9_-]
"def_bool" return T_DEF_BOOL;
"def_tristate" return T_DEF_TRISTATE;
"default" return T_DEFAULT;
-"defconfig_list" return T_DEFCONFIG_LIST;
"depends" return T_DEPENDS;
"endchoice" return T_ENDCHOICE;
"endif" return T_ENDIF;
diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h
index 1c15e3c98bdf..7378e966add5 100644
--- a/scripts/kconfig/lkc.h
+++ b/scripts/kconfig/lkc.h
@@ -96,7 +96,6 @@ struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr
void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep);
void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep);
void menu_add_option_modules(void);
-void menu_add_option_defconfig_list(void);
void menu_add_option_allnoconfig_y(void);
void menu_finalize(struct menu *parent);
void menu_set_type(int type);
diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c
index a5fbd6ccc006..5dcfc173da41 100644
--- a/scripts/kconfig/menu.c
+++ b/scripts/kconfig/menu.c
@@ -219,15 +219,6 @@ void menu_add_option_modules(void)
modules_sym = current_entry->sym;
}
-void menu_add_option_defconfig_list(void)
-{
- if (!sym_defconfig_list)
- sym_defconfig_list = current_entry->sym;
- else if (sym_defconfig_list != current_entry->sym)
- zconf_error("trying to redefine defconfig symbol");
- sym_defconfig_list->flags |= SYMBOL_NO_WRITE;
-}
-
void menu_add_option_allnoconfig_y(void)
{
current_entry->sym->flags |= SYMBOL_ALLNOCONFIG_Y;
diff --git a/scripts/kconfig/parser.y b/scripts/kconfig/parser.y
index 190f1117f35a..f11d8382e9e6 100644
--- a/scripts/kconfig/parser.y
+++ b/scripts/kconfig/parser.y
@@ -53,7 +53,6 @@ static struct menu *current_menu, *current_entry;
%token T_COMMENT
%token T_CONFIG
%token T_DEFAULT
-%token T_DEFCONFIG_LIST
%token T_DEF_BOOL
%token T_DEF_TRISTATE
%token T_DEPENDS
@@ -223,11 +222,6 @@ config_option: T_OPTION T_MODULES T_EOL
menu_add_option_modules();
};
-config_option: T_OPTION T_DEFCONFIG_LIST T_EOL
-{
- menu_add_option_defconfig_list();
-};
-
config_option: T_OPTION T_ALLNOCONFIG_Y T_EOL
{
menu_add_option_allnoconfig_y();
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index fe38e6fd2c2a..36b0fcb18117 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -35,7 +35,6 @@ static struct symbol symbol_empty = {
.flags = SYMBOL_VALID,
};
-struct symbol *sym_defconfig_list;
struct symbol *modules_sym;
static tristate modules_val;
diff --git a/scripts/kconfig/tests/conftest.py b/scripts/kconfig/tests/conftest.py
index 0345ef6e3273..af8774a5697c 100644
--- a/scripts/kconfig/tests/conftest.py
+++ b/scripts/kconfig/tests/conftest.py
@@ -53,6 +53,10 @@ class Conf:
# Override 'srctree' environment to make the test as the top directory
extra_env['srctree'] = self._test_dir
+ # Clear KCONFIG_DEFCONFIG_LIST to keep unit tests from being affected
+ # by the user's environment.
+ extra_env['KCONFIG_DEFCONFIG_LIST'] = ''
+
# Run Kconfig in a temporary directory.
# This directory is automatically removed when done.
with tempfile.TemporaryDirectory() as temp_dir:
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 08:54:41 +0100