From 9367858dd08caf4e6ebd511abd2fca0a2d87b648 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sat, 17 Oct 2009 21:33:34 +0200 Subject: dontdiff: add generated We move more and more stuff to include/generated - so lets ignore the content for users of plain diff. Signed-off-by: Sam Ravnborg Signed-off-by: Michal Marek --- Documentation/dontdiff | 1 + 1 file changed, 1 insertion(+) (limited to 'Documentation') diff --git a/Documentation/dontdiff b/Documentation/dontdiff index e151b2a36267..3ad6acead949 100644 --- a/Documentation/dontdiff +++ b/Documentation/dontdiff @@ -103,6 +103,7 @@ gconf gen-devlist gen_crc32table gen_init_cpio +generated genheaders genksyms *_gray256.c -- cgit v1.2.3 From 264a26838056fc2d759f58bec2e720e01fcb1bdb Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sun, 18 Oct 2009 00:49:24 +0200 Subject: kbuild: move autoconf.h to include/generated Signed-off-by: Sam Ravnborg Signed-off-by: Michal Marek --- .gitignore | 1 - Documentation/kbuild/kconfig.txt | 3 ++- Makefile | 11 ++++++----- arch/m68k/kernel/head.S | 2 +- scripts/basic/fixdep.c | 10 +++++----- scripts/kconfig/confdata.c | 2 +- scripts/mkcompile_h | 2 +- 7 files changed, 16 insertions(+), 15 deletions(-) (limited to 'Documentation') diff --git a/.gitignore b/.gitignore index c06b4c9aeb72..c6c19ea6ea96 100644 --- a/.gitignore +++ b/.gitignore @@ -46,7 +46,6 @@ Module.symvers # Generated include files # include/config -include/linux/autoconf.h include/linux/version.h include/linux/utsrelease.h include/generated diff --git a/Documentation/kbuild/kconfig.txt b/Documentation/kbuild/kconfig.txt index 849b5e56d06f..ab8dc3538988 100644 --- a/Documentation/kbuild/kconfig.txt +++ b/Documentation/kbuild/kconfig.txt @@ -106,7 +106,8 @@ This environment variable can be set to specify the path & name of the KCONFIG_AUTOHEADER -------------------------------------------------- This environment variable can be set to specify the path & name of the -"autoconf.h" (header) file. Its default value is "include/linux/autoconf.h". +"autoconf.h" (header) file. +Its default value is "include/generated/autoconf.h". ====================================================================== diff --git a/Makefile b/Makefile index 86b66cf85ced..3bdd932e3d88 100644 --- a/Makefile +++ b/Makefile @@ -336,7 +336,7 @@ CFLAGS_GCOV = -fprofile-arcs -ftest-coverage # Needed to be compatible with the O= option LINUXINCLUDE := -I$(srctree)/arch/$(hdr-arch)/include -Iinclude \ $(if $(KBUILD_SRC), -I$(srctree)/include) \ - -include include/linux/autoconf.h + -include include/generated/autoconf.h KBUILD_CPPFLAGS := -D__KERNEL__ @@ -492,17 +492,18 @@ $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; # if auto.conf.cmd is missing then we are probably in a cleaned tree so # we execute the config step to be sure to catch updated Kconfig files include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd + $(Q)mkdir -p include/generated $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig else -# external modules needs include/linux/autoconf.h and include/config/auto.conf +# external modules needs include/generated/autoconf.h and include/config/auto.conf # but do not care if they are up-to-date. Use auto.conf to trigger the test PHONY += include/config/auto.conf include/config/auto.conf: - $(Q)test -e include/linux/autoconf.h -a -e $@ || ( \ + $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ echo; \ echo " ERROR: Kernel configuration is invalid."; \ - echo " include/linux/autoconf.h or $@ are missing."; \ + echo " include/generated/autoconf.h or $@ are missing.";\ echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ echo; \ /bin/false) @@ -1149,7 +1150,7 @@ CLEAN_FILES += vmlinux System.map \ # Directories & files removed with 'make mrproper' MRPROPER_DIRS += include/config usr/include include/generated MRPROPER_FILES += .config .config.old .version .old_version \ - include/linux/autoconf.h include/linux/version.h \ + include/linux/version.h \ include/linux/utsrelease.h \ Module.symvers Module.markers tags TAGS cscope* diff --git a/arch/m68k/kernel/head.S b/arch/m68k/kernel/head.S index 86edb5fbcfc3..ef54128baa0b 100644 --- a/arch/m68k/kernel/head.S +++ b/arch/m68k/kernel/head.S @@ -196,7 +196,7 @@ * for them and trying to understand what they mean. * * CONFIG_xxx: These are the obvious machine configuration defines created - * during configuration. These are defined in include/linux/autoconf.h. + * during configuration. These are defined in autoconf.h. * * CONSOLE: There is support for head.S console in this file. This * console can talk to a Mac frame buffer, but could easily be extrapolated diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c index 6bf21f83837d..ea26b23de082 100644 --- a/scripts/basic/fixdep.c +++ b/scripts/basic/fixdep.c @@ -16,15 +16,15 @@ * tells make when to remake a file. * * To use this list as-is however has the drawback that virtually - * every file in the kernel includes . + * every file in the kernel includes autoconf.h. * - * If the user re-runs make *config, linux/autoconf.h will be + * If the user re-runs make *config, autoconf.h will be * regenerated. make notices that and will rebuild every file which * includes autoconf.h, i.e. basically all files. This is extremely * annoying if the user just changed CONFIG_HIS_DRIVER from n to m. * * So we play the same trick that "mkdep" played before. We replace - * the dependency on linux/autoconf.h by a dependency on every config + * the dependency on autoconf.h by a dependency on every config * option which is mentioned in any of the listed prequisites. * * kconfig populates a tree in include/config/ with an empty file @@ -73,7 +73,7 @@ * cmd_ = * * and then basically copies the ..d file to stdout, in the - * process filtering out the dependency on linux/autoconf.h and adding + * process filtering out the dependency on autoconf.h and adding * dependencies on include/config/my/option.h for every * CONFIG_MY_OPTION encountered in any of the prequisites. * @@ -324,7 +324,7 @@ static void parse_dep_file(void *map, size_t len) p++; } memcpy(s, m, p-m); s[p-m] = 0; - if (strrcmp(s, "include/linux/autoconf.h") && + if (strrcmp(s, "include/generated/autoconf.h") && strrcmp(s, "arch/um/include/uml-config.h") && strrcmp(s, ".ver")) { printf(" %s \\\n", s); diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c index b55e72ff2fc6..797a7410f690 100644 --- a/scripts/kconfig/confdata.c +++ b/scripts/kconfig/confdata.c @@ -776,7 +776,7 @@ int conf_write_autoconf(void) name = getenv("KCONFIG_AUTOHEADER"); if (!name) - name = "include/linux/autoconf.h"; + name = "include/generated/autoconf.h"; if (rename(".tmpconfig.h", name)) return 1; name = conf_get_autoconfig_name(); diff --git a/scripts/mkcompile_h b/scripts/mkcompile_h index bce3d0fe6fbd..23dbad80cce9 100755 --- a/scripts/mkcompile_h +++ b/scripts/mkcompile_h @@ -14,7 +14,7 @@ vecho() { [ "${quiet}" = "silent_" ] || echo "$@" ; } # So "sudo make install" won't change the "compiled by " # do "compiled by root" -if [ -r $TARGET -a ! -O include/linux/autoconf.h ]; then +if [ -r $TARGET -a ! -O include/generated/autoconf.h ]; then vecho " SKIPPED $TARGET" exit 0 fi -- cgit v1.2.3 From bc081dd6e9f622c73334dc465359168543ccaabf Mon Sep 17 00:00:00 2001 From: Michal Marek Date: Mon, 7 Dec 2009 16:38:33 +0100 Subject: kbuild: generate modules.builtin To make it easier for module-init-tools and scripts like mkinitrd to distinguish builtin and missing modules, install a modules.builtin file listing all builtin modules. This is done by generating an additional config file (tristate.conf) with tristate options set to uppercase 'Y' or 'M'. If we source that config file, the builtin modules appear in obj-Y. Signed-off-by: Michal Marek --- .gitignore | 1 + Documentation/kbuild/kbuild.txt | 14 ++++++++++ Documentation/kbuild/kconfig.txt | 5 ++++ Makefile | 14 +++++++--- scripts/Kbuild.include | 6 +++++ scripts/Makefile.modbuiltin | 55 ++++++++++++++++++++++++++++++++++++++++ scripts/kconfig/confdata.c | 22 +++++++++++++++- 7 files changed, 112 insertions(+), 5 deletions(-) create mode 100644 scripts/Makefile.modbuiltin (limited to 'Documentation') diff --git a/.gitignore b/.gitignore index 002d5304968b..fb2190c61af0 100644 --- a/.gitignore +++ b/.gitignore @@ -22,6 +22,7 @@ *.lst *.symtypes *.order +modules.builtin *.elf *.bin *.gz diff --git a/Documentation/kbuild/kbuild.txt b/Documentation/kbuild/kbuild.txt index bb3bf38f03da..6f8c1cabbc5d 100644 --- a/Documentation/kbuild/kbuild.txt +++ b/Documentation/kbuild/kbuild.txt @@ -1,3 +1,17 @@ +Output files + +modules.order +-------------------------------------------------- +This file records the order in which modules appear in Makefiles. This +is used by modprobe to deterministically resolve aliases that match +multiple modules. + +modules.builtin +-------------------------------------------------- +This file lists all modules that are built into the kernel. This is used +by modprobe to not fail when trying to load something builtin. + + Environment variables KCPPFLAGS diff --git a/Documentation/kbuild/kconfig.txt b/Documentation/kbuild/kconfig.txt index ab8dc3538988..49efae703979 100644 --- a/Documentation/kbuild/kconfig.txt +++ b/Documentation/kbuild/kconfig.txt @@ -103,6 +103,11 @@ KCONFIG_AUTOCONFIG This environment variable can be set to specify the path & name of the "auto.conf" file. Its default value is "include/config/auto.conf". +KCONFIG_TRISTATE +-------------------------------------------------- +This environment variable can be set to specify the path & name of the +"tristate.conf" file. Its default value is "include/config/tristate.conf". + KCONFIG_AUTOHEADER -------------------------------------------------- This environment variable can be set to specify the path & name of the diff --git a/Makefile b/Makefile index aa608c2959f5..391fcb396324 100644 --- a/Makefile +++ b/Makefile @@ -464,7 +464,7 @@ ifeq ($(KBUILD_EXTMOD),) # Carefully list dependencies so we do not try to build scripts twice # in parallel PHONY += scripts -scripts: scripts_basic include/config/auto.conf +scripts: scripts_basic include/config/auto.conf include/config/tristate.conf $(Q)$(MAKE) $(build)=$(@) # Objects we will link into vmlinux / subdirs we need to visit @@ -491,7 +491,7 @@ $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; # with it and forgot to run make oldconfig. # if auto.conf.cmd is missing then we are probably in a cleaned tree so # we execute the config step to be sure to catch updated Kconfig files -include/config/auto.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd +include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig else # external modules needs include/generated/autoconf.h and include/config/auto.conf @@ -876,6 +876,9 @@ $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; PHONY += $(vmlinux-dirs) $(vmlinux-dirs): prepare scripts $(Q)$(MAKE) $(build)=$@ +ifdef CONFIG_MODULES + $(Q)$(MAKE) $(modbuiltin)=$@ +endif # Build the kernel release string # @@ -1080,6 +1083,7 @@ all: modules PHONY += modules modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order + $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.builtin) > $(objtree)/modules.builtin @$(kecho) ' Building modules, stage 2.'; $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild @@ -1109,6 +1113,7 @@ _modinst_: ln -s $(objtree) $(MODLIB)/build ; \ fi @cp -f $(objtree)/modules.order $(MODLIB)/ + @cp -f $(objtree)/modules.builtin $(MODLIB)/ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst # This depmod is only for convenience to give the initial @@ -1169,7 +1174,7 @@ clean: archclean $(clean-dirs) \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ -o -name '*.symtypes' -o -name 'modules.order' \ - -o -name '.tmp_*.o.*' \ + -o modules.order -o -name '.tmp_*.o.*' \ -o -name '*.gcno' \) -type f -print | xargs rm -f # mrproper - Delete all generated files, including .config @@ -1367,7 +1372,8 @@ $(clean-dirs): clean: rm-dirs := $(MODVERDIR) clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers \ - $(KBUILD_EXTMOD)/modules.order + $(KBUILD_EXTMOD)/modules.order \ + $(KBUILD_EXTMOD)/modules.builtin clean: $(clean-dirs) $(call cmd,rmdirs) $(call cmd,rmfiles) diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include index c67e73ecd5be..ed2773edfe71 100644 --- a/scripts/Kbuild.include +++ b/scripts/Kbuild.include @@ -149,6 +149,12 @@ ld-option = $(call try-run,\ # $(Q)$(MAKE) $(build)=dir build := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.build obj +### +# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.modbuiltin obj= +# Usage: +# $(Q)$(MAKE) $(modbuiltin)=dir +modbuiltin := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.modbuiltin obj + # Prefix -I with $(srctree) if it is not an absolute path. # skip if -I has no parameter addtree = $(if $(patsubst -I%,%,$(1)), \ diff --git a/scripts/Makefile.modbuiltin b/scripts/Makefile.modbuiltin new file mode 100644 index 000000000000..102a276f6eea --- /dev/null +++ b/scripts/Makefile.modbuiltin @@ -0,0 +1,55 @@ +# ========================================================================== +# Generating modules.builtin +# ========================================================================== + +src := $(obj) + +PHONY := __modbuiltin +__modbuiltin: + +-include include/config/auto.conf +# tristate.conf sets tristate variables to uppercase 'Y' or 'M' +# That way, we get the list of built-in modules in obj-Y +-include include/config/tristate.conf + +include scripts/Kbuild.include + +# The filename Kbuild has precedence over Makefile +kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src)) +kbuild-file := $(if $(wildcard $(kbuild-dir)/Kbuild),$(kbuild-dir)/Kbuild,$(kbuild-dir)/Makefile) +include $(kbuild-file) + +include scripts/Makefile.lib +__subdir-Y := $(patsubst %/,%,$(filter %/, $(obj-Y))) +subdir-Y += $(__subdir-Y) +subdir-ym := $(sort $(subdir-y) $(subdir-Y) $(subdir-m)) +subdir-ym := $(addprefix $(obj)/,$(subdir-ym)) +obj-Y := $(addprefix $(obj)/,$(obj-Y)) + +modbuiltin-subdirs := $(patsubst %,%/modules.builtin, $(subdir-ym)) +modbuiltin-mods := $(filter %.ko, $(obj-Y:.o=.ko)) +modbuiltin-target := $(obj)/modules.builtin + +__modbuiltin: $(modbuiltin-target) $(subdir-ym) + @: + +$(modbuiltin-target): $(subdir-ym) FORCE + $(Q)(for m in $(modbuiltin-mods); do echo kernel/$$m; done; \ + cat /dev/null $(modbuiltin-subdirs)) > $@ + +PHONY += FORCE + +FORCE: + +# Descending +# --------------------------------------------------------------------------- + +PHONY += $(subdir-ym) +$(subdir-ym): + $(Q)$(MAKE) $(modbuiltin)=$@ + + +# Declare the contents of the .PHONY variable as phony. We keep that +# information in a variable se we can use it in if_changed and friends. + +.PHONY: $(PHONY) diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c index 797a7410f690..c4dec80cfd8e 100644 --- a/scripts/kconfig/confdata.c +++ b/scripts/kconfig/confdata.c @@ -677,7 +677,7 @@ int conf_write_autoconf(void) struct symbol *sym; const char *str; const char *name; - FILE *out, *out_h; + FILE *out, *tristate, *out_h; time_t now; int i, l; @@ -692,9 +692,16 @@ int conf_write_autoconf(void) if (!out) return 1; + tristate = fopen(".tmpconfig_tristate", "w"); + if (!tristate) { + fclose(out); + return 1; + } + out_h = fopen(".tmpconfig.h", "w"); if (!out_h) { fclose(out); + fclose(tristate); return 1; } @@ -707,6 +714,9 @@ int conf_write_autoconf(void) "# %s" "#\n", sym_get_string_value(sym), ctime(&now)); + fprintf(tristate, "#\n" + "# Automatically generated - do not edit\n" + "\n"); fprintf(out_h, "/*\n" " * Automatically generated C config: don't edit\n" " * Linux kernel version: %s\n" @@ -727,10 +737,14 @@ int conf_write_autoconf(void) break; case mod: fprintf(out, "CONFIG_%s=m\n", sym->name); + fprintf(tristate, "CONFIG_%s=M\n", sym->name); fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name); break; case yes: fprintf(out, "CONFIG_%s=y\n", sym->name); + if (sym->type == S_TRISTATE) + fprintf(tristate, "CONFIG_%s=Y\n", + sym->name); fprintf(out_h, "#define CONFIG_%s 1\n", sym->name); break; } @@ -772,6 +786,7 @@ int conf_write_autoconf(void) } } fclose(out); + fclose(tristate); fclose(out_h); name = getenv("KCONFIG_AUTOHEADER"); @@ -779,6 +794,11 @@ int conf_write_autoconf(void) name = "include/generated/autoconf.h"; if (rename(".tmpconfig.h", name)) return 1; + name = getenv("KCONFIG_TRISTATE"); + if (!name) + name = "include/config/tristate.conf"; + if (rename(".tmpconfig_tristate", name)) + return 1; name = conf_get_autoconfig_name(); /* * This must be the last step, kbuild has a dependency on auto.conf -- cgit v1.2.3