[PATCH AUTOSEL 6.12 001/486] kconfig: merge_config: use an empty file as initfile

[PATCH AUTOSEL 6.12 001/486] kconfig: merge_config: use an empty file as initfile

[Sasha Levin]

From: Daniel Gomez <da.gomez@samsung.com>

[ Upstream commit a26fe287eed112b4e21e854f173c8918a6a8596d ]

The scripts/kconfig/merge_config.sh script requires an existing
$INITFILE (or the $1 argument) as a base file for merging Kconfig
fragments. However, an empty $INITFILE can serve as an initial starting
point, later referenced by the KCONFIG_ALLCONFIG Makefile variable
if -m is not used. This variable can point to any configuration file
containing preset config symbols (the merged output) as stated in
Documentation/kbuild/kconfig.rst. When -m is used $INITFILE will
contain just the merge output requiring the user to run make (i.e.
KCONFIG_ALLCONFIG=<$INITFILE> make <allnoconfig/alldefconfig> or make
olddefconfig).

Instead of failing when `$INITFILE` is missing, create an empty file and
use it as the starting point for merges.

Signed-off-by: Daniel Gomez <da.gomez@samsung.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 scripts/kconfig/merge_config.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/scripts/kconfig/merge_config.sh b/scripts/kconfig/merge_config.sh
index 0b7952471c18f..79c09b378be81 100755
--- a/scripts/kconfig/merge_config.sh
+++ b/scripts/kconfig/merge_config.sh
@@ -112,8 +112,8 @@ INITFILE=$1
 shift;
 
 if [ ! -r "$INITFILE" ]; then
-	echo "The base file '$INITFILE' does not exist.  Exit." >&2
-	exit 1
+	echo "The base file '$INITFILE' does not exist. Creating one..." >&2
+	touch "$INITFILE"
 fi
 
 MERGE_LIST=$*
-- 
2.39.5

[PATCH AUTOSEL 6.12 113/486] kconfig: do not clear SYMBOL_VALID when reading include/config/auto.conf

[Sasha Levin]

From: Masahiro Yamada <masahiroy@kernel.org>

[ Upstream commit 226ac19c217f24f0927d0a73cf9ee613971a188d ]

When conf_read_simple() is called with S_DEF_AUTO, it is meant to read
previous symbol values from include/config/auto.conf to determine which
include/config/* files should be touched.

This process should not modify the current symbol status in any way.
However, conf_touch_deps() currently invalidates all symbol values and
recalculates them, which is totally unneeded.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 scripts/kconfig/confdata.c | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 3b55e7a4131d9..ac95661a1c9dd 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -385,7 +385,7 @@ int conf_read_simple(const char *name, int def)
 
 	def_flags = SYMBOL_DEF << def;
 	for_all_symbols(sym) {
-		sym->flags &= ~(def_flags|SYMBOL_VALID);
+		sym->flags &= ~def_flags;
 		switch (sym->type) {
 		case S_INT:
 		case S_HEX:
@@ -398,7 +398,11 @@ int conf_read_simple(const char *name, int def)
 		}
 	}
 
-	expr_invalidate_all();
+	if (def == S_DEF_USER) {
+		for_all_symbols(sym)
+			sym->flags &= ~SYMBOL_VALID;
+		expr_invalidate_all();
+	}
 
 	while (getline_stripped(&line, &line_asize, in) != -1) {
 		struct menu *choice;
@@ -464,6 +468,9 @@ int conf_read_simple(const char *name, int def)
 		if (conf_set_sym_val(sym, def, def_flags, val))
 			continue;
 
+		if (def != S_DEF_USER)
+			continue;
+
 		/*
 		 * If this is a choice member, give it the highest priority.
 		 * If conflicting CONFIG options are given from an input file,
@@ -967,10 +974,8 @@ static int conf_touch_deps(void)
 	depfile_path[depfile_prefix_len] = 0;
 
 	conf_read_simple(name, S_DEF_AUTO);
-	sym_calc_value(modules_sym);
 
 	for_all_symbols(sym) {
-		sym_calc_value(sym);
 		if (sym_is_choice(sym))
 			continue;
 		if (sym->flags & SYMBOL_WRITE) {
@@ -1084,12 +1089,12 @@ int conf_write_autoconf(int overwrite)
 	if (ret)
 		return -1;
 
-	if (conf_touch_deps())
-		return 1;
-
 	for_all_symbols(sym)
 		sym_calc_value(sym);
 
+	if (conf_touch_deps())
+		return 1;
+
 	ret = __conf_write_autoconf(conf_get_autoheader_name(),
 				    print_symbol_for_c,
 				    &comment_style_c);
-- 
2.39.5