Merge tag 'kbuild-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Refactor scripts/kallsyms to make it faster and easier to maintain

 - Clean up menuconfig

 - Provide Clang with hard-coded target triple instead of CROSS_COMPILE

 - Use -z pack-relative-relocs flags instead of --use-android-relr-tags
   for arm64 CONFIG_RELR

 - Add srcdeb-pkg target to build only a Debian source package

 - Add KDEB_SOURCE_COMPRESS option to specify the compression for a
   Debian source package

 - Misc cleanups and fixes

* tag 'kbuild-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: deb-pkg: specify targets in debian/rules as .PHONY
  sparc: unify sparc32/sparc64 archhelp
  kbuild: rpm-pkg: remove kernel-drm PROVIDES
  kbuild: deb-pkg: add KDEB_SOURCE_COMPRESS to specify source compression
  kbuild: add srcdeb-pkg target
  Makefile: use -z pack-relative-relocs
  kbuild: clang: do not use CROSS_COMPILE for target triple
  kconfig: menuconfig: reorder functions to remove forward declarations
  kconfig: menuconfig: remove unused M_EVENT macro
  kconfig: menuconfig: remove OLD_NCURSES macro
  kbuild: builddeb: Eliminate debian/arch use
  scripts/kallsyms: update the usage in the comment block
  scripts/kallsyms: decrease expand_symbol() / cleanup_symbol_name() calls
  scripts/kallsyms: change the output order
  scripts/kallsyms: move compiler-generated symbol patterns to mksysmap
  scripts/kallsyms: exclude symbols generated by itself dynamically
  scripts/mksysmap: use sed with in-line comments
  scripts/mksysmap: remove comments described in nm(1)
  scripts/kallsyms: remove redundant code for omitting U and N
  kallsyms: expand symbol name into comment for debugging

Makefile

@@ -1113,7 +1113,8 @@ LDFLAGS_vmlinux	+= -X
 endif
 
 ifeq ($(CONFIG_RELR),y)
-LDFLAGS_vmlinux	+= --pack-dyn-relocs=relr --use-android-relr-tags
+# ld.lld before 15 did not support -z pack-relative-relocs.
+LDFLAGS_vmlinux	+= $(call ld-option,--pack-dyn-relocs=relr,-z pack-relative-relocs)
 endif
 
 # We never want expected sections to be placed heuristically by the

arch/sparc/Makefile

@@ -83,18 +83,11 @@ vdso_install:
 KBUILD_IMAGE := $(boot)/zImage
 
 # Don't use tabs in echo arguments.
-ifeq ($(ARCH),sparc)
 define archhelp
-  echo  '* image        - kernel image ($(boot)/image)'
-  echo  '* zImage       - stripped kernel image ($(boot)/zImage)'
+  echo  '* vmlinux      - standard SPARC kernel'
+  echo  '  image        - kernel image ($(boot)/image)'
+  echo  '* zImage       - stripped/compressed kernel image ($(boot)/zImage)'
   echo  '  uImage       - U-Boot SPARC32 Image (only for LEON)'
+  echo  '  vmlinux.aout - a.out kernel for SPARC64'
   echo  '  tftpboot.img - image prepared for tftp'
 endef
-else
-define archhelp
-  echo  '* vmlinux      - standard sparc64 kernel'
-  echo  '* zImage       - stripped and compressed sparc64 kernel ($(boot)/zImage)'
-  echo  '  vmlinux.aout - a.out kernel for sparc64'
-  echo  '  tftpboot.img - image prepared for tftp'
-endef
-endif

scripts/Makefile.clang

@@ -13,15 +13,11 @@ CLANG_TARGET_FLAGS_x86		:= x86_64-linux-gnu
 CLANG_TARGET_FLAGS_um		:= $(CLANG_TARGET_FLAGS_$(SUBARCH))
 CLANG_TARGET_FLAGS		:= $(CLANG_TARGET_FLAGS_$(SRCARCH))
 
-ifeq ($(CROSS_COMPILE),)
 ifeq ($(CLANG_TARGET_FLAGS),)
-$(error Specify CROSS_COMPILE or add '--target=' option to scripts/Makefile.clang)
+$(error add '--target=' option to scripts/Makefile.clang)
 else
 CLANG_FLAGS	+= --target=$(CLANG_TARGET_FLAGS)
-endif # CLANG_TARGET_FLAGS
-else
-CLANG_FLAGS	+= --target=$(notdir $(CROSS_COMPILE:%-=%))
-endif # CROSS_COMPILE
+endif
 
 ifeq ($(LLVM_IAS),0)
 CLANG_FLAGS	+= -fno-integrated-as

scripts/Makefile.package

@@ -5,7 +5,6 @@ include $(srctree)/scripts/Kbuild.include
 include $(srctree)/scripts/Makefile.lib
 
 KERNELPATH := kernel-$(subst -,_,$(KERNELRELEASE))
-KBUILD_PKG_ROOTCMD ?="fakeroot -u"
 # Include only those top-level files that are needed by make, plus the GPL copy
 TAR_CONTENT := Documentation LICENSES arch block certs crypto drivers fs \
                include init io_uring ipc kernel lib mm net rust \
@@ -42,19 +41,25 @@ check-git:
 		false; \
 	fi
 
-git-config-tar.gz  = -c tar.tar.gz.command="$(KGZIP)"
-git-config-tar.bz2 = -c tar.tar.bz2.command="$(KBZIP2)"
-git-config-tar.xz  = -c tar.tar.xz.command="$(XZ)"
-git-config-tar.zst = -c tar.tar.zst.command="$(ZSTD)"
+git-config-tar.gz   = -c tar.tar.gz.command="$(KGZIP)"
+git-config-tar.bz2  = -c tar.tar.bz2.command="$(KBZIP2)"
+git-config-tar.lzma = -c tar.tar.lzma.command="$(LZMA)"
+git-config-tar.xz   = -c tar.tar.xz.command="$(XZ)"
+git-config-tar.zst  = -c tar.tar.zst.command="$(ZSTD)"
 
 quiet_cmd_archive = ARCHIVE $@
       cmd_archive = git -C $(srctree) $(git-config-tar$(suffix $@)) archive \
                     --output=$$(realpath $@) $(archive-args)
 
+suffix-gzip  := .gz
+suffix-bzip2 := .bz2
+suffix-lzma  := .lzma
+suffix-xz    := .xz
+
 # Linux source tarball
 # ---------------------------------------------------------------------------
 
-linux-tarballs := $(addprefix linux, .tar.gz)
+linux-tarballs := $(addprefix linux, .tar.gz .tar.bz2 .tar.lzma .tar.xz)
 
 targets += $(linux-tarballs)
 $(linux-tarballs): archive-args = --prefix=linux/ $$(cat $<)
@@ -86,6 +91,22 @@ binrpm-pkg:
 	+rpmbuild $(RPMOPTS) --define "_builddir $(objtree)" --target \
 		$(UTS_MACHINE)-linux -bb $(objtree)/binkernel.spec
 
+# deb-pkg srcdeb-pkg bindeb-pkg
+# ---------------------------------------------------------------------------
+
+KDEB_SOURCE_COMPRESS ?= gzip
+
+supported-deb-source-compress := gzip bzip2 lzma xz
+
+PHONY += linux.tar.unsupported-deb-src-compress
+linux.tar.unsupported-deb-src-compress:
+	@echo "error: KDEB_SOURCE_COMPRESS=$(KDEB_SOURCE_COMPRESS) is not supported. The supported values are: $(supported-deb-source-compress)" >&2
+	@false
+
+debian-orig-suffix := \
+    $(strip $(if $(filter $(supported-deb-source-compress), $(KDEB_SOURCE_COMPRESS)), \
+    $(suffix-$(KDEB_SOURCE_COMPRESS)),.unsupported-deb-src-compress))
+
 quiet_cmd_debianize = GEN     $@
       cmd_debianize = $(srctree)/scripts/package/mkdebian $(mkdebian-opts)
 
@@ -95,23 +116,34 @@ debian: FORCE
 PHONY += debian-orig
 debian-orig: private source = $(shell dpkg-parsechangelog -S Source)
 debian-orig: private version = $(shell dpkg-parsechangelog -S Version | sed 's/-[^-]*$$//')
-debian-orig: private orig-name = $(source)_$(version).orig.tar.gz
+debian-orig: private orig-name = $(source)_$(version).orig.tar$(debian-orig-suffix)
 debian-orig: mkdebian-opts = --need-source
-debian-orig: linux.tar.gz debian
+debian-orig: linux.tar$(debian-orig-suffix) debian
 	$(Q)if [ "$(df  --output=target .. 2>/dev/null)" = "$(df --output=target $< 2>/dev/null)" ]; then \
 		ln -f $< ../$(orig-name); \
 	else \
 		cp $< ../$(orig-name); \
 	fi
 
-PHONY += deb-pkg
-deb-pkg: debian-orig
-	+dpkg-buildpackage -r$(KBUILD_PKG_ROOTCMD) -a$$(cat debian/arch) $(DPKG_FLAGS) \
-		--build=source,binary -nc -us -uc
+KBUILD_PKG_ROOTCMD ?= 'fakeroot -u'
+
+PHONY += deb-pkg srcdeb-pkg bindeb-pkg
+
+deb-pkg:    private build-type := source,binary
+srcdeb-pkg: private build-type := source
+bindeb-pkg: private build-type := binary
 
-PHONY += bindeb-pkg
+deb-pkg srcdeb-pkg: debian-orig
 bindeb-pkg: debian
-	+dpkg-buildpackage -r$(KBUILD_PKG_ROOTCMD) -a$$(cat debian/arch) $(DPKG_FLAGS) -b -nc -uc
+deb-pkg srcdeb-pkg bindeb-pkg:
+	+$(strip dpkg-buildpackage \
+	--build=$(build-type) --no-pre-clean --unsigned-changes \
+	$(if $(findstring source, $(build-type)), \
+		--unsigned-source --compression=$(KDEB_SOURCE_COMPRESS)) \
+	$(if $(findstring binary, $(build-type)), \
+		-r$(KBUILD_PKG_ROOTCMD) -a$$(cat debian/arch), \
+		--no-check-builddeps) \
+	$(DPKG_FLAGS))
 
 PHONY += intdeb-pkg
 intdeb-pkg:
@@ -208,6 +240,7 @@ help:
 	@echo '  srcrpm-pkg          - Build only the source kernel RPM package'
 	@echo '  binrpm-pkg          - Build only the binary kernel RPM package'
 	@echo '  deb-pkg             - Build both source and binary deb kernel packages'
+	@echo '  srcdeb-pkg          - Build only the source kernel deb package'
 	@echo '  bindeb-pkg          - Build only the binary kernel deb package'
 	@echo '  snap-pkg            - Build only the binary kernel snap package'
 	@echo '                        (will connect to external hosts)'

scripts/kallsyms.c

@@ -6,7 +6,7 @@
  * of the GNU General Public License, incorporated herein by reference.
  *
  * Usage: kallsyms [--all-symbols] [--absolute-percpu]
- *                         [--base-relative] in.map > out.S
+ *                         [--base-relative] [--lto-clang] in.map > out.S
  *
  *      Table compression uses all the unused char codes on the symbols and
  *  maps these to the most used substrings (tokens). For instance, it might
@@ -102,86 +102,7 @@ static char *sym_name(const struct sym_entry *s)
 
 static bool is_ignored_symbol(const char *name, char type)
 {
-	/* Symbol names that exactly match to the following are ignored.*/
-	static const char * const ignored_symbols[] = {
-		/*
-		 * Symbols which vary between passes. Passes 1 and 2 must have
-		 * identical symbol lists. The kallsyms_* symbols below are
-		 * only added after pass 1, they would be included in pass 2
-		 * when --all-symbols is specified so exclude them to get a
-		 * stable symbol list.
-		 */
-		"kallsyms_addresses",
-		"kallsyms_offsets",
-		"kallsyms_relative_base",
-		"kallsyms_num_syms",
-		"kallsyms_names",
-		"kallsyms_markers",
-		"kallsyms_token_table",
-		"kallsyms_token_index",
-		"kallsyms_seqs_of_names",
-		/* Exclude linker generated symbols which vary between passes */
-		"_SDA_BASE_",		/* ppc */
-		"_SDA2_BASE_",		/* ppc */
-		NULL
-	};
-
-	/* Symbol names that begin with the following are ignored.*/
-	static const char * const ignored_prefixes[] = {
-		"__efistub_",		/* arm64 EFI stub namespace */
-		"__kvm_nvhe_$",		/* arm64 local symbols in non-VHE KVM namespace */
-		"__kvm_nvhe_.L",	/* arm64 local symbols in non-VHE KVM namespace */
-		"__AArch64ADRPThunk_",	/* arm64 lld */
-		"__ARMV5PILongThunk_",	/* arm lld */
-		"__ARMV7PILongThunk_",
-		"__ThumbV7PILongThunk_",
-		"__LA25Thunk_",		/* mips lld */
-		"__microLA25Thunk_",
-		"__kcfi_typeid_",	/* CFI type identifiers */
-		NULL
-	};
-
-	/* Symbol names that end with the following are ignored.*/
-	static const char * const ignored_suffixes[] = {
-		"_from_arm",		/* arm */
-		"_from_thumb",		/* arm */
-		"_veneer",		/* arm */
-		NULL
-	};
-
-	/* Symbol names that contain the following are ignored.*/
-	static const char * const ignored_matches[] = {
-		".long_branch.",	/* ppc stub */
-		".plt_branch.",		/* ppc stub */
-		NULL
-	};
-
-	const char * const *p;
-
-	for (p = ignored_symbols; *p; p++)
-		if (!strcmp(name, *p))
-			return true;
-
-	for (p = ignored_prefixes; *p; p++)
-		if (!strncmp(name, *p, strlen(*p)))
-			return true;
-
-	for (p = ignored_suffixes; *p; p++) {
-		int l = strlen(name) - strlen(*p);
-
-		if (l >= 0 && !strcmp(name + l, *p))
-			return true;
-	}
-
-	for (p = ignored_matches; *p; p++) {
-		if (strstr(name, *p))
-			return true;
-	}
-
-	if (type == 'U' || type == 'u')
-		return true;
-	/* exclude debugging symbols */
-	if (type == 'N' || type == 'n')
+	if (type == 'u' || type == 'n')
 		return true;
 
 	if (toupper(type) == 'A') {
@@ -414,19 +335,10 @@ static int symbol_absolute(const struct sym_entry *s)
 	return s->percpu_absolute;
 }
 
-static char * s_name(char *buf)
-{
-	/* Skip the symbol type */
-	return buf + 1;
-}
-
 static void cleanup_symbol_name(char *s)
 {
 	char *p;
 
-	if (!lto_clang)
-		return;
-
 	/*
 	 * ASCII[.]   = 2e
 	 * ASCII[0-9] = 30,39
@@ -445,16 +357,10 @@ static void cleanup_symbol_name(char *s)
 static int compare_names(const void *a, const void *b)
 {
 	int ret;
-	char sa_namebuf[KSYM_NAME_LEN];
-	char sb_namebuf[KSYM_NAME_LEN];
 	const struct sym_entry *sa = *(const struct sym_entry **)a;
 	const struct sym_entry *sb = *(const struct sym_entry **)b;
 
-	expand_symbol(sa->sym, sa->len, sa_namebuf);
-	expand_symbol(sb->sym, sb->len, sb_namebuf);
-	cleanup_symbol_name(s_name(sa_namebuf));
-	cleanup_symbol_name(s_name(sb_namebuf));
-	ret = strcmp(s_name(sa_namebuf), s_name(sb_namebuf));
+	ret = strcmp(sym_name(sa), sym_name(sb));
 	if (!ret) {
 		if (sa->addr > sb->addr)
 			return 1;
@@ -491,55 +397,6 @@ static void write_src(void)
 
 	printf("\t.section .rodata, \"a\"\n");
 
-	if (!base_relative)
-		output_label("kallsyms_addresses");
-	else
-		output_label("kallsyms_offsets");
-
-	for (i = 0; i < table_cnt; i++) {
-		if (base_relative) {
-			/*
-			 * Use the offset relative to the lowest value
-			 * encountered of all relative symbols, and emit
-			 * non-relocatable fixed offsets that will be fixed
-			 * up at runtime.
-			 */
-
-			long long offset;
-			int overflow;
-
-			if (!absolute_percpu) {
-				offset = table[i]->addr - relative_base;
-				overflow = (offset < 0 || offset > UINT_MAX);
-			} else if (symbol_absolute(table[i])) {
-				offset = table[i]->addr;
-				overflow = (offset < 0 || offset > INT_MAX);
-			} else {
-				offset = relative_base - table[i]->addr - 1;
-				overflow = (offset < INT_MIN || offset >= 0);
-			}
-			if (overflow) {
-				fprintf(stderr, "kallsyms failure: "
-					"%s symbol value %#llx out of range in relative mode\n",
-					symbol_absolute(table[i]) ? "absolute" : "relative",
-					table[i]->addr);
-				exit(EXIT_FAILURE);
-			}
-			printf("\t.long\t%#x\n", (int)offset);
-		} else if (!symbol_absolute(table[i])) {
-			output_address(table[i]->addr);
-		} else {
-			printf("\tPTR\t%#llx\n", table[i]->addr);
-		}
-	}
-	printf("\n");
-
-	if (base_relative) {
-		output_label("kallsyms_relative_base");
-		output_address(relative_base);
-		printf("\n");
-	}
-
 	output_label("kallsyms_num_syms");
 	printf("\t.long\t%u\n", table_cnt);
 	printf("\n");
@@ -592,6 +449,15 @@ static void write_src(void)
 	}
 	printf("\n");
 
+	/*
+	 * Now that we wrote out the compressed symbol names, restore the
+	 * original names, which are needed in some of the later steps.
+	 */
+	for (i = 0; i < table_cnt; i++) {
+		expand_symbol(table[i]->sym, table[i]->len, buf);
+		strcpy((char *)table[i]->sym, buf);
+	}
+
 	output_label("kallsyms_markers");
 	for (i = 0; i < ((table_cnt + 255) >> 8); i++)
 		printf("\t.long\t%u\n", markers[i]);
@@ -599,15 +465,6 @@ static void write_src(void)
 
 	free(markers);
 
-	sort_symbols_by_name();
-	output_label("kallsyms_seqs_of_names");
-	for (i = 0; i < table_cnt; i++)
-		printf("\t.byte 0x%02x, 0x%02x, 0x%02x\n",
-			(unsigned char)(table[i]->seq >> 16),
-			(unsigned char)(table[i]->seq >> 8),
-			(unsigned char)(table[i]->seq >> 0));
-	printf("\n");
-
 	output_label("kallsyms_token_table");
 	off = 0;
 	for (i = 0; i < 256; i++) {
@@ -622,6 +479,68 @@ static void write_src(void)
 	for (i = 0; i < 256; i++)
 		printf("\t.short\t%d\n", best_idx[i]);
 	printf("\n");
+
+	if (!base_relative)
+		output_label("kallsyms_addresses");
+	else
+		output_label("kallsyms_offsets");
+
+	for (i = 0; i < table_cnt; i++) {
+		if (base_relative) {
+			/*
+			 * Use the offset relative to the lowest value
+			 * encountered of all relative symbols, and emit
+			 * non-relocatable fixed offsets that will be fixed
+			 * up at runtime.
+			 */
+
+			long long offset;
+			int overflow;
+
+			if (!absolute_percpu) {
+				offset = table[i]->addr - relative_base;
+				overflow = (offset < 0 || offset > UINT_MAX);
+			} else if (symbol_absolute(table[i])) {
+				offset = table[i]->addr;
+				overflow = (offset < 0 || offset > INT_MAX);
+			} else {
+				offset = relative_base - table[i]->addr - 1;
+				overflow = (offset < INT_MIN || offset >= 0);
+			}
+			if (overflow) {
+				fprintf(stderr, "kallsyms failure: "
+					"%s symbol value %#llx out of range in relative mode\n",
+					symbol_absolute(table[i]) ? "absolute" : "relative",
+					table[i]->addr);
+				exit(EXIT_FAILURE);
+			}
+			printf("\t.long\t%#x	/* %s */\n", (int)offset, table[i]->sym);
+		} else if (!symbol_absolute(table[i])) {
+			output_address(table[i]->addr);
+		} else {
+			printf("\tPTR\t%#llx\n", table[i]->addr);
+		}
+	}
+	printf("\n");
+
+	if (base_relative) {
+		output_label("kallsyms_relative_base");
+		output_address(relative_base);
+		printf("\n");
+	}
+
+	if (lto_clang)
+		for (i = 0; i < table_cnt; i++)
+			cleanup_symbol_name((char *)table[i]->sym);
+
+	sort_symbols_by_name();
+	output_label("kallsyms_seqs_of_names");
+	for (i = 0; i < table_cnt; i++)
+		printf("\t.byte 0x%02x, 0x%02x, 0x%02x\n",
+			(unsigned char)(table[i]->seq >> 16),
+			(unsigned char)(table[i]->seq >> 8),
+			(unsigned char)(table[i]->seq >> 0));
+	printf("\n");
 }
 
 

scripts/kconfig/lxdialog/dialog.h

@@ -18,22 +18,6 @@
 #endif
 #include <ncurses.h>
 
-/*
- * Colors in ncurses 1.9.9e do not work properly since foreground and
- * background colors are OR'd rather than separately masked.  This version
- * of dialog was hacked to work with ncurses 1.9.9e, making it incompatible
- * with standard curses.  The simplest fix (to make this work with standard
- * curses) uses the wbkgdset() function, not used in the original hack.
- * Turn it off if we're building with 1.9.9e, since it just confuses things.
- */
-#if defined(NCURSES_VERSION) && defined(_NEED_WRAP) && !defined(GCC_PRINTFLIKE)
-#define OLD_NCURSES 1
-#undef  wbkgdset
-#define wbkgdset(w,p)		/*nothing */
-#else
-#define OLD_NCURSES 0
-#endif
-
 #define TR(params) _tracef params
 
 #define KEY_ESC 27
@@ -225,14 +209,3 @@ int dialog_checklist(const char *title, const char *prompt, int height,
 		     int width, int list_height);
 int dialog_inputbox(const char *title, const char *prompt, int height,
 		    int width, const char *init);
-
-/*
- * This is the base for fictitious keys, which activate
- * the buttons.
- *
- * Mouse-generated keys are the following:
- *   -- the first 32 are used as numbers, in addition to '0'-'9'
- *   -- the lowercase are used to signal mouse-enter events (M_EVENT + 'o')
- *   -- uppercase chars are used to invoke the button (M_EVENT + 'O')
- */
-#define M_EVENT (KEY_MAX+1)

scripts/kconfig/lxdialog/menubox.c

@@ -63,15 +63,7 @@ static void do_print_item(WINDOW * win, const char *item, int line_y,
 	/* Clear 'residue' of last item */
 	wattrset(win, dlg.menubox.atr);
 	wmove(win, line_y, 0);
-#if OLD_NCURSES
-	{
-		int i;
-		for (i = 0; i < menu_width; i++)
-			waddch(win, ' ');
-	}
-#else
 	wclrtoeol(win);
-#endif
 	wattrset(win, selected ? dlg.item_selected.atr : dlg.item.atr);
 	mvwaddstr(win, line_y, item_x, menu_item);
 	if (hotkey) {

scripts/kconfig/lxdialog/textbox.c

@@ -8,18 +8,136 @@
 
 #include "dialog.h"
 
-static void back_lines(int n);
-static void print_page(WINDOW *win, int height, int width, update_text_fn
-		       update_text, void *data);
-static void print_line(WINDOW *win, int row, int width);
-static char *get_line(void);
-static void print_position(WINDOW * win);
-
 static int hscroll;
 static int begin_reached, end_reached, page_length;
 static char *buf;
 static char *page;
 
+/*
+ * Go back 'n' lines in text. Called by dialog_textbox().
+ * 'page' will be updated to point to the desired line in 'buf'.
+ */
+static void back_lines(int n)
+{
+	int i;
+
+	begin_reached = 0;
+	/* Go back 'n' lines */
+	for (i = 0; i < n; i++) {
+		if (*page == '\0') {
+			if (end_reached) {
+				end_reached = 0;
+				continue;
+			}
+		}
+		if (page == buf) {
+			begin_reached = 1;
+			return;
+		}
+		page--;
+		do {
+			if (page == buf) {
+				begin_reached = 1;
+				return;
+			}
+			page--;
+		} while (*page != '\n');
+		page++;
+	}
+}
+
+/*
+ * Return current line of text. Called by dialog_textbox() and print_line().
+ * 'page' should point to start of current line before calling, and will be
+ * updated to point to start of next line.
+ */
+static char *get_line(void)
+{
+	int i = 0;
+	static char line[MAX_LEN + 1];
+
+	end_reached = 0;
+	while (*page != '\n') {
+		if (*page == '\0') {
+			end_reached = 1;
+			break;
+		} else if (i < MAX_LEN)
+			line[i++] = *(page++);
+		else {
+			/* Truncate lines longer than MAX_LEN characters */
+			if (i == MAX_LEN)
+				line[i++] = '\0';
+			page++;
+		}
+	}
+	if (i <= MAX_LEN)
+		line[i] = '\0';
+	if (!end_reached)
+		page++;		/* move past '\n' */
+
+	return line;
+}
+
+/*
+ * Print a new line of text.
+ */
+static void print_line(WINDOW *win, int row, int width)
+{
+	char *line;
+
+	line = get_line();
+	line += MIN(strlen(line), hscroll);	/* Scroll horizontally */
+	wmove(win, row, 0);	/* move cursor to correct line */
+	waddch(win, ' ');
+	waddnstr(win, line, MIN(strlen(line), width - 2));
+
+	/* Clear 'residue' of previous line */
+	wclrtoeol(win);
+}
+
+/*
+ * Print a new page of text.
+ */
+static void print_page(WINDOW *win, int height, int width, update_text_fn
+		       update_text, void *data)
+{
+	int i, passed_end = 0;
+
+	if (update_text) {
+		char *end;
+
+		for (i = 0; i < height; i++)
+			get_line();
+		end = page;
+		back_lines(height);
+		update_text(buf, page - buf, end - buf, data);
+	}
+
+	page_length = 0;
+	for (i = 0; i < height; i++) {
+		print_line(win, i, width);
+		if (!passed_end)
+			page_length++;
+		if (end_reached && !passed_end)
+			passed_end = 1;
+	}
+	wnoutrefresh(win);
+}
+
+/*
+ * Print current position
+ */
+static void print_position(WINDOW *win)
+{
+	int percent;
+
+	wattrset(win, dlg.position_indicator.atr);
+	wbkgdset(win, dlg.position_indicator.atr & A_COLOR);
+	percent = (page - buf) * 100 / strlen(buf);
+	wmove(win, getmaxy(win) - 3, getmaxx(win) - 9);
+	wprintw(win, "(%3d%%)", percent);
+}
+
 /*
  * refresh window content
  */
@@ -33,7 +151,6 @@ static void refresh_text_box(WINDOW *dialog, WINDOW *box, int boxh, int boxw,
 	wrefresh(dialog);
 }
 
-
 /*
  * Display text from a file in a dialog box.
  *
@@ -259,137 +376,3 @@ int dialog_textbox(const char *title, char *tbuf, int initial_height,
 		*_hscroll = hscroll;
 	return key;
 }
-
-/*
- * Go back 'n' lines in text. Called by dialog_textbox().
- * 'page' will be updated to point to the desired line in 'buf'.
- */
-static void back_lines(int n)
-{
-	int i;
-
-	begin_reached = 0;
-	/* Go back 'n' lines */
-	for (i = 0; i < n; i++) {
-		if (*page == '\0') {
-			if (end_reached) {
-				end_reached = 0;
-				continue;
-			}
-		}
-		if (page == buf) {
-			begin_reached = 1;
-			return;
-		}
-		page--;
-		do {
-			if (page == buf) {
-				begin_reached = 1;
-				return;
-			}
-			page--;
-		} while (*page != '\n');
-		page++;
-	}
-}
-
-/*
- * Print a new page of text.
- */
-static void print_page(WINDOW *win, int height, int width, update_text_fn
-		       update_text, void *data)
-{
-	int i, passed_end = 0;
-
-	if (update_text) {
-		char *end;
-
-		for (i = 0; i < height; i++)
-			get_line();
-		end = page;
-		back_lines(height);
-		update_text(buf, page - buf, end - buf, data);
-	}
-
-	page_length = 0;
-	for (i = 0; i < height; i++) {
-		print_line(win, i, width);
-		if (!passed_end)
-			page_length++;
-		if (end_reached && !passed_end)
-			passed_end = 1;
-	}
-	wnoutrefresh(win);
-}
-
-/*
- * Print a new line of text.
- */
-static void print_line(WINDOW * win, int row, int width)
-{
-	char *line;
-
-	line = get_line();
-	line += MIN(strlen(line), hscroll);	/* Scroll horizontally */
-	wmove(win, row, 0);	/* move cursor to correct line */
-	waddch(win, ' ');
-	waddnstr(win, line, MIN(strlen(line), width - 2));
-
-	/* Clear 'residue' of previous line */
-#if OLD_NCURSES
-	{
-		int x = getcurx(win);
-		int i;
-		for (i = 0; i < width - x; i++)
-			waddch(win, ' ');
-	}
-#else
-	wclrtoeol(win);
-#endif
-}
-
-/*
- * Return current line of text. Called by dialog_textbox() and print_line().
- * 'page' should point to start of current line before calling, and will be
- * updated to point to start of next line.
- */
-static char *get_line(void)
-{
-	int i = 0;
-	static char line[MAX_LEN + 1];
-
-	end_reached = 0;
-	while (*page != '\n') {
-		if (*page == '\0') {
-			end_reached = 1;
-			break;
-		} else if (i < MAX_LEN)
-			line[i++] = *(page++);
-		else {
-			/* Truncate lines longer than MAX_LEN characters */
-			if (i == MAX_LEN)
-				line[i++] = '\0';
-			page++;
-		}
-	}
-	if (i <= MAX_LEN)
-		line[i] = '\0';
-	if (!end_reached)
-		page++;		/* move past '\n' */
-
-	return line;
-}
-
-/*
- * Print current position
- */
-static void print_position(WINDOW * win)
-{
-	int percent;
-
-	wattrset(win, dlg.position_indicator.atr);
-	wbkgdset(win, dlg.position_indicator.atr & A_COLOR);
-	percent = (page - buf) * 100 / strlen(buf);
-	wmove(win, getmaxy(win) - 3, getmaxx(win) - 9);
-	wprintw(win, "(%3d%%)", percent);
-}

scripts/kconfig/mconf.c

@@ -290,16 +290,6 @@ static int save_and_exit;
 static int silent;
 
 static void conf(struct menu *menu, struct menu *active_menu);
-static void conf_choice(struct menu *menu);
-static void conf_string(struct menu *menu);
-static void conf_load(void);
-static void conf_save(void);
-static int show_textbox_ext(const char *title, char *text, int r, int c,
-			    int *keys, int *vscroll, int *hscroll,
-			    update_text_fn update_text, void *data);
-static void show_textbox(const char *title, const char *text, int r, int c);
-static void show_helptext(const char *title, const char *text);
-static void show_help(struct menu *menu);
 
 static char filename[PATH_MAX+1];
 static void set_config_filename(const char *config_filename)
@@ -358,6 +348,37 @@ static void reset_subtitle(void)
 	set_dialog_subtitles(subtitles);
 }
 
+static int show_textbox_ext(const char *title, char *text, int r, int c, int
+			    *keys, int *vscroll, int *hscroll, update_text_fn
+			    update_text, void *data)
+{
+	dialog_clear();
+	return dialog_textbox(title, text, r, c, keys, vscroll, hscroll,
+			      update_text, data);
+}
+
+static void show_textbox(const char *title, const char *text, int r, int c)
+{
+	show_textbox_ext(title, (char *) text, r, c, (int []) {0}, NULL, NULL,
+			 NULL, NULL);
+}
+
+static void show_helptext(const char *title, const char *text)
+{
+	show_textbox(title, text, 0, 0);
+}
+
+static void show_help(struct menu *menu)
+{
+	struct gstr help = str_new();
+
+	help.max_width = getmaxx(stdscr) - 10;
+	menu_get_ext_help(menu, &help);
+
+	show_helptext(menu_get_prompt(menu), str_get(&help));
+	str_free(&help);
+}
+
 struct search_data {
 	struct list_head *head;
 	struct menu **targets;
@@ -643,158 +664,6 @@ static void build_conf(struct menu *menu)
 	indent -= doint;
 }
 
-static void conf(struct menu *menu, struct menu *active_menu)
-{
-	struct menu *submenu;
-	const char *prompt = menu_get_prompt(menu);
-	struct subtitle_part stpart;
-	struct symbol *sym;
-	int res;
-	int s_scroll = 0;
-
-	if (menu != &rootmenu)
-		stpart.text = menu_get_prompt(menu);
-	else
-		stpart.text = NULL;
-	list_add_tail(&stpart.entries, &trail);
-
-	while (1) {
-		item_reset();
-		current_menu = menu;
-		build_conf(menu);
-		if (!child_count)
-			break;
-		set_subtitle();
-		dialog_clear();
-		res = dialog_menu(prompt ? prompt : "Main Menu",
-				  menu_instructions,
-				  active_menu, &s_scroll);
-		if (res == 1 || res == KEY_ESC || res == -ERRDISPLAYTOOSMALL)
-			break;
-		if (item_count() != 0) {
-			if (!item_activate_selected())
-				continue;
-			if (!item_tag())
-				continue;
-		}
-		submenu = item_data();
-		active_menu = item_data();
-		if (submenu)
-			sym = submenu->sym;
-		else
-			sym = NULL;
-
-		switch (res) {
-		case 0:
-			switch (item_tag()) {
-			case 'm':
-				if (single_menu_mode)
-					submenu->data = (void *) (long) !submenu->data;
-				else
-					conf(submenu, NULL);
-				break;
-			case 't':
-				if (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)
-					conf_choice(submenu);
-				else if (submenu->prompt->type == P_MENU)
-					conf(submenu, NULL);
-				break;
-			case 's':
-				conf_string(submenu);
-				break;
-			}
-			break;
-		case 2:
-			if (sym)
-				show_help(submenu);
-			else {
-				reset_subtitle();
-				show_helptext("README", mconf_readme);
-			}
-			break;
-		case 3:
-			reset_subtitle();
-			conf_save();
-			break;
-		case 4:
-			reset_subtitle();
-			conf_load();
-			break;
-		case 5:
-			if (item_is_tag('t')) {
-				if (sym_set_tristate_value(sym, yes))
-					break;
-				if (sym_set_tristate_value(sym, mod))
-					show_textbox(NULL, setmod_text, 6, 74);
-			}
-			break;
-		case 6:
-			if (item_is_tag('t'))
-				sym_set_tristate_value(sym, no);
-			break;
-		case 7:
-			if (item_is_tag('t'))
-				sym_set_tristate_value(sym, mod);
-			break;
-		case 8:
-			if (item_is_tag('t'))
-				sym_toggle_tristate_value(sym);
-			else if (item_is_tag('m'))
-				conf(submenu, NULL);
-			break;
-		case 9:
-			search_conf();
-			break;
-		case 10:
-			show_all_options = !show_all_options;
-			break;
-		}
-	}
-
-	list_del(trail.prev);
-}
-
-static int show_textbox_ext(const char *title, char *text, int r, int c, int
-			    *keys, int *vscroll, int *hscroll, update_text_fn
-			    update_text, void *data)
-{
-	dialog_clear();
-	return dialog_textbox(title, text, r, c, keys, vscroll, hscroll,
-			      update_text, data);
-}
-
-static void show_textbox(const char *title, const char *text, int r, int c)
-{
-	show_textbox_ext(title, (char *) text, r, c, (int []) {0}, NULL, NULL,
-			 NULL, NULL);
-}
-
-static void show_helptext(const char *title, const char *text)
-{
-	show_textbox(title, text, 0, 0);
-}
-
-static void conf_message_callback(const char *s)
-{
-	if (save_and_exit) {
-		if (!silent)
-			printf("%s", s);
-	} else {
-		show_textbox(NULL, s, 6, 60);
-	}
-}
-
-static void show_help(struct menu *menu)
-{
-	struct gstr help = str_new();
-
-	help.max_width = getmaxx(stdscr) - 10;
-	menu_get_ext_help(menu, &help);
-
-	show_helptext(menu_get_prompt(menu), str_get(&help));
-	str_free(&help);
-}
-
 static void conf_choice(struct menu *menu)
 {
 	const char *prompt = menu_get_prompt(menu);
@@ -950,6 +819,127 @@ static void conf_save(void)
 	}
 }
 
+static void conf(struct menu *menu, struct menu *active_menu)
+{
+	struct menu *submenu;
+	const char *prompt = menu_get_prompt(menu);
+	struct subtitle_part stpart;
+	struct symbol *sym;
+	int res;
+	int s_scroll = 0;
+
+	if (menu != &rootmenu)
+		stpart.text = menu_get_prompt(menu);
+	else
+		stpart.text = NULL;
+	list_add_tail(&stpart.entries, &trail);
+
+	while (1) {
+		item_reset();
+		current_menu = menu;
+		build_conf(menu);
+		if (!child_count)
+			break;
+		set_subtitle();
+		dialog_clear();
+		res = dialog_menu(prompt ? prompt : "Main Menu",
+				  menu_instructions,
+				  active_menu, &s_scroll);
+		if (res == 1 || res == KEY_ESC || res == -ERRDISPLAYTOOSMALL)
+			break;
+		if (item_count() != 0) {
+			if (!item_activate_selected())
+				continue;
+			if (!item_tag())
+				continue;
+		}
+		submenu = item_data();
+		active_menu = item_data();
+		if (submenu)
+			sym = submenu->sym;
+		else
+			sym = NULL;
+
+		switch (res) {
+		case 0:
+			switch (item_tag()) {
+			case 'm':
+				if (single_menu_mode)
+					submenu->data = (void *) (long) !submenu->data;
+				else
+					conf(submenu, NULL);
+				break;
+			case 't':
+				if (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)
+					conf_choice(submenu);
+				else if (submenu->prompt->type == P_MENU)
+					conf(submenu, NULL);
+				break;
+			case 's':
+				conf_string(submenu);
+				break;
+			}
+			break;
+		case 2:
+			if (sym)
+				show_help(submenu);
+			else {
+				reset_subtitle();
+				show_helptext("README", mconf_readme);
+			}
+			break;
+		case 3:
+			reset_subtitle();
+			conf_save();
+			break;
+		case 4:
+			reset_subtitle();
+			conf_load();
+			break;
+		case 5:
+			if (item_is_tag('t')) {
+				if (sym_set_tristate_value(sym, yes))
+					break;
+				if (sym_set_tristate_value(sym, mod))
+					show_textbox(NULL, setmod_text, 6, 74);
+			}
+			break;
+		case 6:
+			if (item_is_tag('t'))
+				sym_set_tristate_value(sym, no);
+			break;
+		case 7:
+			if (item_is_tag('t'))
+				sym_set_tristate_value(sym, mod);
+			break;
+		case 8:
+			if (item_is_tag('t'))
+				sym_toggle_tristate_value(sym);
+			else if (item_is_tag('m'))
+				conf(submenu, NULL);
+			break;
+		case 9:
+			search_conf();
+			break;
+		case 10:
+			show_all_options = !show_all_options;
+			break;
+		}
+	}
+
+	list_del(trail.prev);
+}
+
+static void conf_message_callback(const char *s)
+{
+	if (save_and_exit) {
+		if (!silent)
+			printf("%s", s);
+	} else {
+		show_textbox(NULL, s, 6, 60);
+	}
+}
+
 static int handle_exit(void)
 {
 	int res;

scripts/link-vmlinux.sh

@@ -174,7 +174,7 @@ kallsyms_step()
 	kallsyms_S=${kallsyms_vmlinux}.S
 
 	vmlinux_link ${kallsyms_vmlinux} "${kallsymso_prev}" ${btf_vmlinux_bin_o}
-	mksysmap ${kallsyms_vmlinux} ${kallsyms_vmlinux}.syms
+	mksysmap ${kallsyms_vmlinux} ${kallsyms_vmlinux}.syms ${kallsymso_prev}
 	kallsyms ${kallsyms_vmlinux}.syms ${kallsyms_S}
 
 	info AS ${kallsyms_S}
@@ -188,7 +188,7 @@ kallsyms_step()
 mksysmap()
 {
 	info NM ${2}
-	${CONFIG_SHELL} "${srctree}/scripts/mksysmap" ${1} ${2}
+	${CONFIG_SHELL} "${srctree}/scripts/mksysmap" ${1} ${2} ${3}
 }
 
 sorttable()
@@ -277,7 +277,7 @@ if is_enabled CONFIG_DEBUG_INFO_BTF && is_enabled CONFIG_BPF; then
 	${RESOLVE_BTFIDS} vmlinux
 fi
 
-mksysmap vmlinux System.map
+mksysmap vmlinux System.map ${kallsymso}
 
 if is_enabled CONFIG_BUILDTIME_TABLE_SORT; then
 	info SORTTAB vmlinux

scripts/mksysmap

@@ -4,57 +4,104 @@
 # tools to retrieve the actual addresses of symbols in the kernel.
 #
 # Usage
-# mksysmap vmlinux System.map
+# mksysmap vmlinux System.map [exclude]
 
 
 #####
 # Generate System.map (actual filename passed as second argument)
-
-# $NM produces the following output:
-# f0081e80 T alloc_vfsmnt
-
-#   The second row specify the type of the symbol:
-#   A = Absolute
-#   B = Uninitialised data (.bss)
-#   C = Common symbol
-#   D = Initialised data
-#   G = Initialised data for small objects
-#   I = Indirect reference to another symbol
-#   N = Debugging symbol
-#   R = Read only
-#   S = Uninitialised data for small objects
-#   T = Text code symbol
-#   U = Undefined symbol
-#   V = Weak symbol
-#   W = Weak symbol
-#   Corresponding small letters are local symbols
-
-# For System.map filter away:
-#   a - local absolute symbols
-#   U - undefined global symbols
-#   N - debugging symbols
-#   w - local weak symbols
+# 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'.
 #
-# Ignored prefixes:
-#  $                    - local symbols for ARM, MIPS, etc.
-#  .L                   - local labels, .LBB,.Ltmpxxx,.L__unnamed_xx,.LASANPC, etc.
-#  __crc_               - modversions
-#  __kstrtab_           - EXPORT_SYMBOL (symbol name)
-#  __kstrtabns_         - EXPORT_SYMBOL (namespace)
+
+${NM} -n ${1} | sed >${2} -e "
+# ---------------------------------------------------------------------------
+# Ignored symbol types
+#
+
+# a: local absolute symbols
+# N: debugging symbols
+# U: undefined global symbols
+# w: local weak symbols
+/ [aNUw] /d
+
+# ---------------------------------------------------------------------------
+# Ignored prefixes
+#  (do not forget a space before each pattern)
+
+# local symbols for ARM, MIPS, etc.
+/ \$/d
+
+# local labels, .LBB, .Ltmpxxx, .L__unnamed_xx, .LASANPC, etc.
+/ \.L/d
+
+# arm64 EFI stub namespace
+/ __efistub_/d
+
+# arm64 local symbols in non-VHE KVM namespace
+/ __kvm_nvhe_\$/d
+/ __kvm_nvhe_\.L/d
+
+# arm64 lld
+/ __AArch64ADRPThunk_/d
+
+# arm lld
+/ __ARMV5PILongThunk_/d
+/ __ARMV7PILongThunk_/d
+/ __ThumbV7PILongThunk_/d
+
+# mips lld
+/ __LA25Thunk_/d
+/ __microLA25Thunk_/d
+
+# CFI type identifiers
+/ __kcfi_typeid_/d
+
+# CRC from modversions
+/ __crc_/d
+
+# EXPORT_SYMBOL (symbol name)
+/ __kstrtab_/d
+
+# EXPORT_SYMBOL (namespace)
+/ __kstrtabns_/d
+
+# ---------------------------------------------------------------------------
+# Ignored suffixes
+#  (do not forget '$' after each pattern)
+
+# arm
+/_from_arm$/d
+/_from_thumb$/d
+/_veneer$/d
+
+# ---------------------------------------------------------------------------
+# Ignored symbols (exact match)
+#  (do not forget a space before and '$' after each pattern)
+
+# for LoongArch?
+/ L0$/d
+
+# ppc
+/ _SDA_BASE_$/d
+/ _SDA2_BASE_$/d
+
+# ---------------------------------------------------------------------------
+# Ignored patterns
+#  (symbols that contain the pattern are ignored)
+
+# ppc stub
+/\.long_branch\./d
+/\.plt_branch\./d
+
+# ---------------------------------------------------------------------------
+# Ignored kallsyms symbols
 #
-# Ignored symbols:
-#  L0                   - for LoongArch?
-
-$NM -n $1 | grep -v		\
-	-e ' [aNUw] '		\
-	-e ' \$'		\
-	-e ' \.L'		\
-	-e ' __crc_'		\
-	-e ' __kstrtab_'	\
-	-e ' __kstrtabns_'	\
-	-e ' L0$'		\
-> $2
+# If the 3rd parameter exists, symbols from it will be omitted from the output.
+# This makes kallsyms have the identical symbol lists in the step 1 and 2.
+# Without this, the step2 would get new symbols generated by scripts/kallsyms.c
+# when CONFIG_KALLSYMS_ALL is enabled. That might require one more pass.
+$(if [ $# -ge 3 ]; then ${NM} ${3} | sed -n '/ U /!s:.* \([^ ]*\)$:/ \1$/d:p'; fi)
+"

scripts/package/builddeb

@@ -209,7 +209,7 @@ install_libc_headers () {
 
 	# move asm headers to /usr/include/<libc-machine>/asm to match the structure
 	# used by Debian-based distros (to support multi-arch)
-	host_arch=$(dpkg-architecture -a$(cat debian/arch) -qDEB_HOST_MULTIARCH)
+	host_arch=$(dpkg-architecture -a$DEB_HOST_ARCH -qDEB_HOST_MULTIARCH)
 	mkdir $pdir/usr/include/$host_arch
 	mv $pdir/usr/include/asm $pdir/usr/include/$host_arch/
 }

scripts/package/mkdebian

@@ -269,6 +269,8 @@ cat <<EOF > debian/rules
 srctree ?= .
 KERNELRELEASE = ${KERNELRELEASE}
 
+.PHONY: clean build build-arch build-indep binary binary-arch binary-indep
+
 build-indep:
 build-arch:
 	\$(MAKE) -f \$(srctree)/Makefile ARCH=${ARCH} \

scripts/package/mkspec

@@ -28,11 +28,6 @@ else
 	M=DEL
 fi
 
-if grep -q CONFIG_DRM=y include/config/auto.conf; then
-	PROVIDES=kernel-drm
-fi
-
-PROVIDES="$PROVIDES kernel-$KERNELRELEASE"
 __KERNELRELEASE=$(echo $KERNELRELEASE | sed -e "s/-/_/g")
 EXCLUDES="$RCS_TAR_IGNORE --exclude=*vmlinux* --exclude=*.mod \
 --exclude=*.o --exclude=*.ko --exclude=*.cmd --exclude=Documentation \
@@ -55,7 +50,7 @@ sed -e '/^DEL/d' -e 's/^\t*//' <<EOF
 $S	Source0: linux.tar.gz
 $S	Source1: config
 $S	Source2: diff.patch
-	Provides: $PROVIDES
+	Provides: kernel-$KERNELRELEASE
 $S	BuildRequires: bc binutils bison dwarves
 $S	BuildRequires: (elfutils-libelf-devel or libelf-devel) flex
 $S	BuildRequires: gcc make openssl openssl-devel perl python3 rsync

scripts/tools-support-relr.sh

@@ -7,8 +7,12 @@ trap "rm -f $tmp_file.o $tmp_file $tmp_file.bin" EXIT
 cat << "END" | $CC -c -x c - -o $tmp_file.o >/dev/null 2>&1
 void *p = &p;
 END
-$LD $tmp_file.o -shared -Bsymbolic --pack-dyn-relocs=relr \
-  --use-android-relr-tags -o $tmp_file
+
+# ld.lld before 15 did not support -z pack-relative-relocs.
+if ! $LD $tmp_file.o -shared -Bsymbolic --pack-dyn-relocs=relr -o $tmp_file 2>/dev/null; then
+	$LD $tmp_file.o -shared -Bsymbolic -z pack-relative-relocs -o $tmp_file 2>&1 |
+		grep -q pack-relative-relocs && exit 1
+fi
 
 # Despite printing an error message, GNU nm still exits with exit code 0 if it
 # sees a relr section. So we need to check that nothing is printed to stderr.