Kbuild fixes for v6.10

- Fix a Kconfig bug regarding comparisons to 'm' or 'n'
 
  - Replace missed $(srctree)/$(src)
 
  - Fix unneeded kallsyms step 3
 
  - Remove incorrect "compatible" properties from image nodes in image.fit
 
  - Improve gen_kheaders.sh
 
  - Fix 'make dt_binding_check'
 
  - Clean up unnecessary code
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Merge tag 'kbuild-fixes-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Fix a Kconfig bug regarding comparisons to 'm' or 'n'

 - Replace missed $(srctree)/$(src)

 - Fix unneeded kallsyms step 3

 - Remove incorrect "compatible" properties from image nodes in
   image.fit

 - Improve gen_kheaders.sh

 - Fix 'make dt_binding_check'

 - Clean up unnecessary code

* tag 'kbuild-fixes-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  dt-bindings: kbuild: Fix dt_binding_check on unconfigured build
  kheaders: use `command -v` to test for existence of `cpio`
  kheaders: explicitly define file modes for archived headers
  scripts/make_fit: Drop fdt image entry compatible string
  kbuild: remove a stale comment about cleaning in link-vmlinux.sh
  kbuild: fix short log for AS in link-vmlinux.sh
  kbuild: change scripts/mksysmap into sed script
  kbuild: avoid unneeded kallsyms step 3
  kbuild: scripts/gdb: Replace missed $(srctree)/$(src) w/ $(src)
  kconfig: remove redundant check in expr_join_or()
  kconfig: fix comparison to constant symbols, 'm', 'n'
  kconfig: remove unused expr_is_no()

kernel/gen_kheaders.sh

@@ -14,7 +14,12 @@ include/
 arch/$SRCARCH/include/
 "
 
-type cpio > /dev/null
+if ! command -v cpio >/dev/null; then
+	echo >&2 "***"
+	echo >&2 "*** 'cpio' could not be found."
+	echo >&2 "***"
+	exit 1
+fi
 
 # Support incremental builds by skipping archive generation
 # if timestamps of files being archived are not changed.
@@ -84,7 +89,7 @@ find $cpio_dir -type f -print0 |
 
 # Create archive and try to normalize metadata for reproducibility.
 tar "${KBUILD_BUILD_TIMESTAMP:+--mtime=$KBUILD_BUILD_TIMESTAMP}" \
-    --owner=0 --group=0 --sort=name --numeric-owner \
+    --owner=0 --group=0 --sort=name --numeric-owner --mode=u=rw,go=r,a+X \
     -I $XZ -cf $tarfile -C $cpio_dir/ . > /dev/null
 
 echo $headers_md5 > kernel/kheaders.md5

scripts/dtc/Makefile

@@ -3,7 +3,7 @@
 
 # *** Also keep .gitignore in sync when changing ***
 hostprogs-always-$(CONFIG_DTC)		+= dtc fdtoverlay
-hostprogs-always-$(CHECK_DT_BINDING)	+= dtc
+hostprogs-always-$(CHECK_DTBS)		+= dtc
 
 dtc-objs	:= dtc.o flattree.o fstree.o data.o livetree.o treesource.o \
 		   srcpos.o checks.o util.o

scripts/gdb/linux/Makefile

@@ -5,7 +5,7 @@ ifdef building_out_of_srctree
 symlinks := $(patsubst $(src)/%,%,$(wildcard $(src)/*.py))
 
 quiet_cmd_symlink = SYMLINK $@
-      cmd_symlink = ln -fsn $(patsubst $(obj)/%,$(abspath $(srctree))/$(src)/%,$@) $@
+      cmd_symlink = ln -fsn $(patsubst $(obj)/%,$(src)/%,$@) $@
 
 always-y += $(symlinks)
 $(addprefix $(obj)/, $(symlinks)): FORCE

scripts/kconfig/expr.c

@@ -476,7 +476,7 @@ static struct expr *expr_join_or(struct expr *e1, struct expr *e2)
 			return expr_alloc_comp(E_UNEQUAL, sym1, &symbol_yes);
 		}
 	}
-	if (sym1->type == S_BOOLEAN && sym1 == sym2) {
+	if (sym1->type == S_BOOLEAN) {
 		if ((e1->type == E_NOT && e1->left.expr->type == E_SYMBOL && e2->type == E_SYMBOL) ||
 		    (e2->type == E_NOT && e2->left.expr->type == E_SYMBOL && e1->type == E_SYMBOL))
 			return expr_alloc_symbol(&symbol_yes);

scripts/kconfig/expr.h

@@ -302,11 +302,6 @@ static inline int expr_is_yes(struct expr *e)
 	return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
 }
 
-static inline int expr_is_no(struct expr *e)
-{
-	return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);
-}
-
 #ifdef __cplusplus
 }
 #endif

scripts/kconfig/symbol.c

@@ -14,6 +14,7 @@
 
 struct symbol symbol_yes = {
 	.name = "y",
+	.type = S_TRISTATE,
 	.curr = { "y", yes },
 	.menus = LIST_HEAD_INIT(symbol_yes.menus),
 	.flags = SYMBOL_CONST|SYMBOL_VALID,
@@ -21,6 +22,7 @@ struct symbol symbol_yes = {
 
 struct symbol symbol_mod = {
 	.name = "m",
+	.type = S_TRISTATE,
 	.curr = { "m", mod },
 	.menus = LIST_HEAD_INIT(symbol_mod.menus),
 	.flags = SYMBOL_CONST|SYMBOL_VALID,
@@ -28,6 +30,7 @@ struct symbol symbol_mod = {
 
 struct symbol symbol_no = {
 	.name = "n",
+	.type = S_TRISTATE,
 	.curr = { "n", no },
 	.menus = LIST_HEAD_INIT(symbol_no.menus),
 	.flags = SYMBOL_CONST|SYMBOL_VALID,
@@ -820,8 +823,7 @@ const char *sym_get_string_value(struct symbol *sym)
 		case no:
 			return "n";
 		case mod:
-			sym_calc_value(modules_sym);
-			return (modules_sym->curr.tri == no) ? "n" : "m";
+			return "m";
 		case yes:
 			return "y";
 		}

scripts/link-vmlinux.sh

@@ -179,10 +179,10 @@ kallsyms_step()
 	kallsyms_S=${kallsyms_vmlinux}.S
 
 	vmlinux_link ${kallsyms_vmlinux} "${kallsymso_prev}" ${btf_vmlinux_bin_o}
-	mksysmap ${kallsyms_vmlinux} ${kallsyms_vmlinux}.syms ${kallsymso_prev}
+	mksysmap ${kallsyms_vmlinux} ${kallsyms_vmlinux}.syms
 	kallsyms ${kallsyms_vmlinux}.syms ${kallsyms_S}
 
-	info AS ${kallsyms_S}
+	info AS ${kallsymso}
 	${CC} ${NOSTDINC_FLAGS} ${LINUXINCLUDE} ${KBUILD_CPPFLAGS} \
 	      ${KBUILD_AFLAGS} ${KBUILD_AFLAGS_KERNEL} \
 	      -c -o ${kallsymso} ${kallsyms_S}
@@ -193,7 +193,7 @@ kallsyms_step()
 mksysmap()
 {
 	info NM ${2}
-	${CONFIG_SHELL} "${srctree}/scripts/mksysmap" ${1} ${2} ${3}
+	${NM} -n "${1}" | "${srctree}/scripts/mksysmap" > "${2}"
 }
 
 sorttable()
@@ -201,7 +201,6 @@ sorttable()
 	${objtree}/scripts/sorttable ${1}
 }
 
-# Delete output files in case of error
 cleanup()
 {
 	rm -f .btf.*
@@ -282,7 +281,7 @@ if is_enabled CONFIG_DEBUG_INFO_BTF && is_enabled CONFIG_BPF; then
 	${RESOLVE_BTFIDS} vmlinux
 fi
 
-mksysmap vmlinux System.map ${kallsymso}
+mksysmap vmlinux System.map
 
 if is_enabled CONFIG_BUILDTIME_TABLE_SORT; then
 	info SORTTAB vmlinux

scripts/make_fit.py

@@ -190,7 +190,7 @@ def output_dtb(fsw, seq, fname, arch, compress):
     Args:
         fsw (libfdt.FdtSw): Object to use for writing
         seq (int): Sequence number (1 for first)
-        fmame (str): Filename containing the DTB
+        fname (str): Filename containing the DTB
         arch: FIT architecture, e.g. 'arm64'
         compress (str): Compressed algorithm, e.g. 'gzip'
 
@@ -211,7 +211,6 @@ def output_dtb(fsw, seq, fname, arch, compress):
         fsw.property_string('type', 'flat_dt')
         fsw.property_string('arch', arch)
         fsw.property_string('compression', compress)
-        fsw.property('compatible', bytes(compat))
 
         with open(fname, 'rb') as inf:
             compressed = compress_data(inf, compress)

scripts/mksysmap

@@ -1,22 +1,16 @@
-#!/bin/sh -x
-# Based on the vmlinux file create the System.map file
+#!/bin/sed -f
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# sed script to filter out symbols that are not needed for System.map,
+# or not suitable for kallsyms. The input should be 'nm -n <file>'.
+#
 # System.map is used by module-init tools and some debugging
 # tools to retrieve the actual addresses of symbols in the kernel.
 #
-# Usage
-# mksysmap vmlinux System.map [exclude]
-
-
-#####
-# Generate System.map (actual filename passed as second argument)
-# The following refers to the symbol type as per nm(1).
-
 # readprofile starts reading symbols when _stext is found, and
 # continue until it finds a symbol which is not either of 'T', 't',
 # 'W' or 'w'.
 #
-
-${NM} -n ${1} | sed >${2} -e "
 # ---------------------------------------------------------------------------
 # Ignored symbol types
 #
@@ -92,13 +86,3 @@ ${NM} -n ${1} | sed >${2} -e "
 # ppc stub
 /\.long_branch\./d
 /\.plt_branch\./d
-
-# ---------------------------------------------------------------------------
-# Ignored kallsyms symbols
-#
-# If the 3rd parameter exists, symbols from it will be omitted from the output.
-# This makes kallsyms have the identical symbol lists in the step 1 and 2.
-# Without this, the step2 would get new symbols generated by scripts/kallsyms.c
-# when CONFIG_KALLSYMS_ALL is enabled. That might require one more pass.
-$(if [ $# -ge 3 ]; then ${NM} ${3} | sed -n '/ U /!s:.* \([^ ]*\)$:/ \1$/d:p'; fi)
-"