From 2ea038917bbdd51a7ae4a898c6a04641324dd033 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Wed, 14 Jan 2009 21:38:20 +0100 Subject: Revert "kbuild: strip generated symbols from *.ko" This reverts commit ad7a953c522ceb496611d127e51e278bfe0ff483. And commit: ("allow stripping of generated symbols under CONFIG_KALLSYMS_ALL") 9bb482476c6c9d1ae033306440c51ceac93ea80c These stripping patches has caused a set of issues: 1) People have reported compatibility issues with binutils due to lack of support for `--strip-unneeded-symbols' with objcopy 2.15.92.0.2 Reported by: Wenji 2) ccache and distcc no longer works as expeced Reported by: Ted, Roland, + others 3) The installed modules increased a lot in size Reported by: Ted, Davej + others Reported-by: Wenji Huang Reported-by: "Theodore Ts'o" Reported-by: Dave Jones Reported-by: Roland McGrath Signed-off-by: Sam Ravnborg --- Makefile | 59 ++++------- arch/x86/scripts/strip-symbols | 1 - init/Kconfig | 7 -- kernel/kallsyms.c | 16 +-- scripts/Makefile.build | 55 ++++------- scripts/Makefile.modinst | 3 +- scripts/genksyms/genksyms.c | 21 ++-- scripts/genksyms/keywords.c_shipped | 189 ++++++++++++++++++------------------ scripts/genksyms/keywords.gperf | 2 - scripts/kallsyms.c | 21 ++-- scripts/mksysmap | 7 +- scripts/strip-symbols | 22 ----- 12 files changed, 166 insertions(+), 237 deletions(-) delete mode 100644 arch/x86/scripts/strip-symbols delete mode 100644 scripts/strip-symbols diff --git a/Makefile b/Makefile index c06e250eca18..c2c4bbeef59d 100644 --- a/Makefile +++ b/Makefile @@ -606,25 +606,20 @@ export INSTALL_PATH ?= /boot MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) export MODLIB -strip-symbols := $(srctree)/scripts/strip-symbols \ - $(wildcard $(srctree)/arch/$(ARCH)/scripts/strip-symbols) - # -# INSTALL_MOD_STRIP, if defined, will cause modules to be stripped while -# they get installed. If INSTALL_MOD_STRIP is '1', then the default -# options (see below) will be used. Otherwise, INSTALL_MOD_STRIP will -# be used as the option(s) to the objcopy command. +# INSTALL_MOD_STRIP, if defined, will cause modules to be +# stripped after they are installed. If INSTALL_MOD_STRIP is '1', then +# the default option --strip-debug will be used. Otherwise, +# INSTALL_MOD_STRIP will used as the options to the strip command. + ifdef INSTALL_MOD_STRIP ifeq ($(INSTALL_MOD_STRIP),1) -mod_strip_cmd = $(OBJCOPY) --strip-debug -ifeq ($(CONFIG_KALLSYMS_ALL),$(CONFIG_KALLSYMS_STRIP_GENERATED)) -mod_strip_cmd += --wildcard $(addprefix --strip-symbols ,$(strip-symbols)) -endif +mod_strip_cmd = $(STRIP) --strip-debug else -mod_strip_cmd = $(OBJCOPY) $(INSTALL_MOD_STRIP) +mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) endif # INSTALL_MOD_STRIP=1 else -mod_strip_cmd = false +mod_strip_cmd = true endif # INSTALL_MOD_STRIP export mod_strip_cmd @@ -754,7 +749,6 @@ last_kallsyms := 2 endif kallsyms.o := .tmp_kallsyms$(last_kallsyms).o -kallsyms.h := $(wildcard include/config/kallsyms/*.h) $(wildcard include/config/kallsyms/*/*.h) define verify_kallsyms $(Q)$(if $($(quiet)cmd_sysmap), \ @@ -779,41 +773,24 @@ endef # Generate .S file with all kernel symbols quiet_cmd_kallsyms = KSYM $@ - cmd_kallsyms = { test $* -eq 0 || $(NM) -n $<; } \ - | $(KALLSYMS) $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) >$@ - -quiet_cmd_kstrip = STRIP $@ - cmd_kstrip = $(OBJCOPY) --wildcard $(addprefix --strip$(if $(CONFIG_RELOCATABLE),-unneeded)-symbols ,$(filter %/scripts/strip-symbols,$^)) $< $@ + cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ + $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ -$(foreach n,0 1 2 3,.tmp_kallsyms$(n).o): KBUILD_AFLAGS += -Wa,--strip-local-absolute -$(foreach n,0 1 2 3,.tmp_kallsyms$(n).o): %.o: %.S scripts FORCE +.tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE $(call if_changed_dep,as_o_S) -ifeq ($(CONFIG_KALLSYMS_STRIP_GENERATED),y) -strip-ext := .stripped -endif - -.tmp_kallsyms%.S: .tmp_vmlinux%$(strip-ext) $(KALLSYMS) $(kallsyms.h) +.tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) $(call cmd,kallsyms) -# make -jN seems to have problems with intermediate files, see bug #3330. -.SECONDARY: $(foreach n,1 2 3,.tmp_vmlinux$(n).stripped) -.tmp_vmlinux%.stripped: .tmp_vmlinux% $(strip-symbols) $(kallsyms.h) - $(call cmd,kstrip) - -ifneq ($(CONFIG_DEBUG_INFO),y) -.tmp_vmlinux%: LDFLAGS_vmlinux += -S -endif # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version -.tmp_vmlinux%: $(vmlinux-lds) $(vmlinux-all) FORCE - $(if $(filter 1,$*),$(call if_changed_rule,ksym_ld),$(call if_changed,vmlinux__)) +.tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE + $(call if_changed_rule,ksym_ld) -.tmp_vmlinux0$(strip-ext): - $(Q)echo "placeholder" >$@ +.tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE + $(call if_changed,vmlinux__) -.tmp_vmlinux1: .tmp_kallsyms0.o -.tmp_vmlinux2: .tmp_kallsyms1.o -.tmp_vmlinux3: .tmp_kallsyms2.o +.tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE + $(call if_changed,vmlinux__) # Needs to visit scripts/ before $(KALLSYMS) can be used. $(KALLSYMS): scripts ; diff --git a/arch/x86/scripts/strip-symbols b/arch/x86/scripts/strip-symbols deleted file mode 100644 index a2f1ccb827c7..000000000000 --- a/arch/x86/scripts/strip-symbols +++ /dev/null @@ -1 +0,0 @@ -__cpu_vendor_dev_X86_VENDOR_* diff --git a/init/Kconfig b/init/Kconfig index a724a149bf3f..0e9924743a17 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -626,13 +626,6 @@ config KALLSYMS_ALL Say N. -config KALLSYMS_STRIP_GENERATED - bool "Strip machine generated symbols from kallsyms" - depends on KALLSYMS_ALL - default y - help - Say N if you want kallsyms to retain even machine generated symbols. - config KALLSYMS_EXTRA_PASS bool "Do an extra kallsyms pass" depends on KALLSYMS diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c index e694afa0eb8c..7b8b0f21a5b1 100644 --- a/kernel/kallsyms.c +++ b/kernel/kallsyms.c @@ -30,19 +30,20 @@ #define all_var 0 #endif -extern const unsigned long kallsyms_addresses[]; -extern const u8 kallsyms_names[]; +/* These will be re-linked against their real values during the second link stage */ +extern const unsigned long kallsyms_addresses[] __attribute__((weak)); +extern const u8 kallsyms_names[] __attribute__((weak)); /* tell the compiler that the count isn't in the small data section if the arch * has one (eg: FRV) */ extern const unsigned long kallsyms_num_syms - __attribute__((__section__(".rodata"))); +__attribute__((weak, section(".rodata"))); -extern const u8 kallsyms_token_table[]; -extern const u16 kallsyms_token_index[]; +extern const u8 kallsyms_token_table[] __attribute__((weak)); +extern const u16 kallsyms_token_index[] __attribute__((weak)); -extern const unsigned long kallsyms_markers[]; +extern const unsigned long kallsyms_markers[] __attribute__((weak)); static inline int is_kernel_inittext(unsigned long addr) { @@ -167,6 +168,9 @@ static unsigned long get_symbol_pos(unsigned long addr, unsigned long symbol_start = 0, symbol_end = 0; unsigned long i, low, high, mid; + /* This kernel should never had been booted. */ + BUG_ON(!kallsyms_addresses); + /* do a binary search on the sorted kallsyms_addresses array */ low = 0; high = kallsyms_num_syms; diff --git a/scripts/Makefile.build b/scripts/Makefile.build index 5d900307de3e..c7de8b39fcf1 100644 --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -151,16 +151,16 @@ cmd_cc_i_c = $(CPP) $(c_flags) -o $@ $< $(obj)/%.i: $(src)/%.c FORCE $(call if_changed_dep,cc_i_c) -cmd_genksyms = \ +cmd_gensymtypes = \ $(CPP) -D__GENKSYMS__ $(c_flags) $< | \ - $(GENKSYMS) -T $@ -A -a $(ARCH) \ + $(GENKSYMS) -T $@ -a $(ARCH) \ $(if $(KBUILD_PRESERVE),-p) \ $(if $(1),-r $(firstword $(wildcard $(@:.symtypes=.symref) /dev/null))) quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@ cmd_cc_symtypes_c = \ set -e; \ - $(call cmd_genksyms, true) >/dev/null; \ + $(call cmd_gensymtypes, true) >/dev/null; \ test -s $@ || rm -f $@ $(obj)/%.symtypes : $(src)/%.c FORCE @@ -177,38 +177,28 @@ cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< else # When module versioning is enabled the following steps are executed: -# o compile a .tmp_.s from .c -# o if .tmp_.s doesn't contain a __ksymtab version, i.e. does -# not export symbols, we just assemble .tmp_.s to .o and +# o compile a .tmp_.o from .c +# o if .tmp_.o doesn't contain a __ksymtab version, i.e. does +# not export symbols, we just rename .tmp_.o to .o and # are done. # o otherwise, we calculate symbol versions using the good old # genksyms on the preprocessed source and postprocess them in a way -# that they are usable as assembly source -# o assemble .o from .tmp_.s forcing inclusion of directives -# defining the actual values of __crc_*, followed by objcopy-ing them -# to force these symbols to be local to permit stripping them later. -s_file = $(@D)/.tmp_$(@F:.o=.s) -v_file = $(@D)/.tmp_$(@F:.o=.v) -tmp_o_file = $(@D)/.tmp_$(@F) -no_g_c_flags = $(filter-out -g%,$(c_flags)) - -cmd_cc_o_c = $(CC) $(c_flags) -S -o $(s_file) $< +# that they are usable as a linker script +# o generate .o from .tmp_.o using the linker to +# replace the unresolved symbols __crc_exported_symbol with +# the actual value of the checksum generated by genksyms +cmd_cc_o_c = $(CC) $(c_flags) -c -o $(@D)/.tmp_$(@F) $< cmd_modversions = \ - if grep -q __ksymtab $(s_file); then \ - if $(call cmd_genksyms, $(KBUILD_SYMTYPES)) > $(v_file) \ - && $(CC) $(no_g_c_flags) -c -Wa,$(v_file) \ - -o $(tmp_o_file) $(s_file) \ - && $(OBJCOPY) -L '__crc_*' -L '___crc_*' -w \ - $(tmp_o_file) $@; \ - then \ - : ; \ - else \ - rm -f $@; exit 1; \ - fi; \ + if $(OBJDUMP) -h $(@D)/.tmp_$(@F) | grep -q __ksymtab; then \ + $(call cmd_gensymtypes, $(KBUILD_SYMTYPES)) \ + > $(@D)/.tmp_$(@F:.o=.ver); \ + \ + $(LD) $(LDFLAGS) -r -o $@ $(@D)/.tmp_$(@F) \ + -T $(@D)/.tmp_$(@F:.o=.ver); \ + rm -f $(@D)/.tmp_$(@F) $(@D)/.tmp_$(@F:.o=.ver); \ else \ - rm -f $(v_file); \ - $(CC) $(no_g_c_flags) -c -o $@ $(s_file); \ + mv -f $(@D)/.tmp_$(@F) $@; \ fi; endif @@ -225,12 +215,7 @@ define rule_cc_o_c $(cmd_record_mcount) \ scripts/basic/fixdep $(depfile) $@ '$(call make-cmd,cc_o_c)' > \ $(dot-target).tmp; \ - if [ -r $(@D)/.tmp_$(@F:.o=.v) ]; then \ - echo >> $(dot-target).tmp; \ - echo '$@: $(GENKSYMS)' >> $(dot-target).tmp; \ - echo '$(GENKSYMS):: ;' >> $(dot-target).tmp; \ - fi; \ - rm -f $(depfile) $(@D)/.tmp_$(@F:.o=.?); \ + rm -f $(depfile); \ mv -f $(dot-target).tmp $(dot-target).cmd endef diff --git a/scripts/Makefile.modinst b/scripts/Makefile.modinst index a5122dce1264..efa5d940e632 100644 --- a/scripts/Makefile.modinst +++ b/scripts/Makefile.modinst @@ -17,8 +17,7 @@ __modinst: $(modules) @: quiet_cmd_modules_install = INSTALL $@ - cmd_modules_install = mkdir -p $(2); \ - $(mod_strip_cmd) $@ $(2)/$(notdir $@) || cp $@ $(2) + cmd_modules_install = mkdir -p $(2); cp $@ $(2) ; $(mod_strip_cmd) $(2)/$(notdir $@) # Modules built outside the kernel source tree go into extra by default INSTALL_MOD_DIR ?= extra diff --git a/scripts/genksyms/genksyms.c b/scripts/genksyms/genksyms.c index f8bb4cabd62d..3a8297b5184c 100644 --- a/scripts/genksyms/genksyms.c +++ b/scripts/genksyms/genksyms.c @@ -43,7 +43,7 @@ int cur_line = 1; char *cur_filename; static int flag_debug, flag_dump_defs, flag_reference, flag_dump_types, - flag_preserve, flag_warnings, flag_asm; + flag_preserve, flag_warnings; static const char *arch = ""; static const char *mod_prefix = ""; @@ -610,11 +610,8 @@ void export_symbol(const char *name) if (flag_dump_defs) fputs(">\n", debugfile); - /* Used as assembly source or a linker script. */ - printf(flag_asm - ? ".equiv %s__crc_%s, %#08lx\n" - : "%s__crc_%s = %#08lx ;\n", - mod_prefix, name, crc); + /* Used as a linker script. */ + printf("%s__crc_%s = 0x%08lx ;\n", mod_prefix, name, crc); } } @@ -651,10 +648,9 @@ void error_with_pos(const char *fmt, ...) static void genksyms_usage(void) { - fputs("Usage:\n" "genksyms [-aAdDTwqhV] > /path/to/.tmp_obj.ver\n" "\n" + fputs("Usage:\n" "genksyms [-adDTwqhV] > /path/to/.tmp_obj.ver\n" "\n" #ifdef __GNU_LIBRARY__ " -a, --arch Select architecture\n" - " -A, --asm Generate assembly rather than linker script\n" " -d, --debug Increment the debug level (repeatable)\n" " -D, --dump Dump expanded symbol defs (for debugging only)\n" " -r, --reference file Read reference symbols from a file\n" @@ -666,7 +662,6 @@ static void genksyms_usage(void) " -V, --version Print the release version\n" #else /* __GNU_LIBRARY__ */ " -a Select architecture\n" - " -A Generate assembly rather than linker script\n" " -d Increment the debug level (repeatable)\n" " -D Dump expanded symbol defs (for debugging only)\n" " -r file Read reference symbols from a file\n" @@ -688,7 +683,6 @@ int main(int argc, char **argv) #ifdef __GNU_LIBRARY__ struct option long_opts[] = { {"arch", 1, 0, 'a'}, - {"asm", 0, 0, 'A'}, {"debug", 0, 0, 'd'}, {"warnings", 0, 0, 'w'}, {"quiet", 0, 0, 'q'}, @@ -701,10 +695,10 @@ int main(int argc, char **argv) {0, 0, 0, 0} }; - while ((o = getopt_long(argc, argv, "a:dwqVADr:T:ph", + while ((o = getopt_long(argc, argv, "a:dwqVDr:T:ph", &long_opts[0], NULL)) != EOF) #else /* __GNU_LIBRARY__ */ - while ((o = getopt(argc, argv, "a:dwqVADr:T:ph")) != EOF) + while ((o = getopt(argc, argv, "a:dwqVDr:T:ph")) != EOF) #endif /* __GNU_LIBRARY__ */ switch (o) { case 'a': @@ -722,9 +716,6 @@ int main(int argc, char **argv) case 'V': fputs("genksyms version 2.5.60\n", stderr); break; - case 'A': - flag_asm = 1; - break; case 'D': flag_dump_defs = 1; break; diff --git a/scripts/genksyms/keywords.c_shipped b/scripts/genksyms/keywords.c_shipped index 83484fe93ede..971e0113ae7a 100644 --- a/scripts/genksyms/keywords.c_shipped +++ b/scripts/genksyms/keywords.c_shipped @@ -1,4 +1,4 @@ -/* ANSI-C code produced by gperf version 3.0.1 */ +/* ANSI-C code produced by gperf version 3.0.2 */ /* Command-line: gperf -L ANSI-C -a -C -E -g -H is_reserved_hash -k '1,3,$' -N is_reserved_word -p -t scripts/genksyms/keywords.gperf */ #if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \ @@ -32,7 +32,7 @@ #line 3 "scripts/genksyms/keywords.gperf" struct resword { const char *name; int token; }; -/* maximum key range = 64, duplicates = 0 */ +/* maximum key range = 62, duplicates = 0 */ #ifdef __GNUC__ __inline @@ -46,32 +46,32 @@ is_reserved_hash (register const char *str, register unsigned int len) { static const unsigned char asso_values[] = { - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 0, - 67, 67, 67, 67, 67, 67, 15, 67, 67, 67, - 0, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 0, 67, 0, 67, 5, - 25, 20, 15, 30, 67, 15, 67, 67, 10, 0, - 10, 40, 20, 67, 10, 5, 0, 10, 15, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67, 67, 67, 67, 67, - 67, 67, 67, 67, 67, 67 + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 5, + 65, 65, 65, 65, 65, 65, 35, 65, 65, 65, + 0, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 0, 65, 0, 65, 5, + 20, 15, 10, 30, 65, 15, 65, 65, 20, 0, + 10, 35, 20, 65, 10, 5, 0, 10, 5, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + 65, 65, 65, 65, 65, 65 }; return len + asso_values[(unsigned char)str[2]] + asso_values[(unsigned char)str[0]] + asso_values[(unsigned char)str[len - 1]]; } @@ -84,119 +84,116 @@ is_reserved_word (register const char *str, register unsigned int len) { enum { - TOTAL_KEYWORDS = 45, + TOTAL_KEYWORDS = 43, MIN_WORD_LENGTH = 3, MAX_WORD_LENGTH = 24, MIN_HASH_VALUE = 3, - MAX_HASH_VALUE = 66 + MAX_HASH_VALUE = 64 }; static const struct resword wordlist[] = { {""}, {""}, {""}, -#line 28 "scripts/genksyms/keywords.gperf" +#line 26 "scripts/genksyms/keywords.gperf" {"asm", ASM_KEYW}, {""}, -#line 10 "scripts/genksyms/keywords.gperf" +#line 8 "scripts/genksyms/keywords.gperf" {"__asm", ASM_KEYW}, {""}, -#line 11 "scripts/genksyms/keywords.gperf" +#line 9 "scripts/genksyms/keywords.gperf" {"__asm__", ASM_KEYW}, {""}, {""}, -#line 54 "scripts/genksyms/keywords.gperf" +#line 52 "scripts/genksyms/keywords.gperf" {"__typeof__", TYPEOF_KEYW}, {""}, -#line 14 "scripts/genksyms/keywords.gperf" +#line 12 "scripts/genksyms/keywords.gperf" {"__const", CONST_KEYW}, -#line 13 "scripts/genksyms/keywords.gperf" +#line 11 "scripts/genksyms/keywords.gperf" {"__attribute__", ATTRIBUTE_KEYW}, -#line 15 "scripts/genksyms/keywords.gperf" +#line 13 "scripts/genksyms/keywords.gperf" {"__const__", CONST_KEYW}, -#line 20 "scripts/genksyms/keywords.gperf" +#line 18 "scripts/genksyms/keywords.gperf" {"__signed__", SIGNED_KEYW}, -#line 46 "scripts/genksyms/keywords.gperf" +#line 44 "scripts/genksyms/keywords.gperf" {"static", STATIC_KEYW}, - {""}, -#line 41 "scripts/genksyms/keywords.gperf" +#line 20 "scripts/genksyms/keywords.gperf" + {"__volatile__", VOLATILE_KEYW}, +#line 39 "scripts/genksyms/keywords.gperf" {"int", INT_KEYW}, -#line 34 "scripts/genksyms/keywords.gperf" +#line 32 "scripts/genksyms/keywords.gperf" {"char", CHAR_KEYW}, -#line 35 "scripts/genksyms/keywords.gperf" +#line 33 "scripts/genksyms/keywords.gperf" {"const", CONST_KEYW}, -#line 47 "scripts/genksyms/keywords.gperf" +#line 45 "scripts/genksyms/keywords.gperf" {"struct", STRUCT_KEYW}, -#line 26 "scripts/genksyms/keywords.gperf" +#line 24 "scripts/genksyms/keywords.gperf" {"__restrict__", RESTRICT_KEYW}, -#line 27 "scripts/genksyms/keywords.gperf" - {"restrict", RESTRICT_KEYW}, -#line 7 "scripts/genksyms/keywords.gperf" - {"EXPORT_SYMBOL_GPL_FUTURE", EXPORT_SYMBOL_KEYW}, -#line 18 "scripts/genksyms/keywords.gperf" - {"__inline__", INLINE_KEYW}, - {""}, -#line 22 "scripts/genksyms/keywords.gperf" - {"__volatile__", VOLATILE_KEYW}, -#line 5 "scripts/genksyms/keywords.gperf" - {"EXPORT_SYMBOL", EXPORT_SYMBOL_KEYW}, #line 25 "scripts/genksyms/keywords.gperf" + {"restrict", RESTRICT_KEYW}, +#line 23 "scripts/genksyms/keywords.gperf" {"_restrict", RESTRICT_KEYW}, - {""}, -#line 12 "scripts/genksyms/keywords.gperf" - {"__attribute", ATTRIBUTE_KEYW}, -#line 6 "scripts/genksyms/keywords.gperf" - {"EXPORT_SYMBOL_GPL", EXPORT_SYMBOL_KEYW}, #line 16 "scripts/genksyms/keywords.gperf" + {"__inline__", INLINE_KEYW}, +#line 10 "scripts/genksyms/keywords.gperf" + {"__attribute", ATTRIBUTE_KEYW}, + {""}, +#line 14 "scripts/genksyms/keywords.gperf" {"__extension__", EXTENSION_KEYW}, -#line 37 "scripts/genksyms/keywords.gperf" +#line 35 "scripts/genksyms/keywords.gperf" {"enum", ENUM_KEYW}, -#line 8 "scripts/genksyms/keywords.gperf" - {"EXPORT_UNUSED_SYMBOL", EXPORT_SYMBOL_KEYW}, -#line 38 "scripts/genksyms/keywords.gperf" +#line 19 "scripts/genksyms/keywords.gperf" + {"__volatile", VOLATILE_KEYW}, +#line 36 "scripts/genksyms/keywords.gperf" {"extern", EXTERN_KEYW}, {""}, -#line 19 "scripts/genksyms/keywords.gperf" +#line 17 "scripts/genksyms/keywords.gperf" {"__signed", SIGNED_KEYW}, -#line 9 "scripts/genksyms/keywords.gperf" - {"EXPORT_UNUSED_SYMBOL_GPL", EXPORT_SYMBOL_KEYW}, -#line 49 "scripts/genksyms/keywords.gperf" - {"union", UNION_KEYW}, -#line 53 "scripts/genksyms/keywords.gperf" +#line 7 "scripts/genksyms/keywords.gperf" + {"EXPORT_SYMBOL_GPL_FUTURE", EXPORT_SYMBOL_KEYW}, + {""}, +#line 51 "scripts/genksyms/keywords.gperf" {"typeof", TYPEOF_KEYW}, -#line 48 "scripts/genksyms/keywords.gperf" +#line 46 "scripts/genksyms/keywords.gperf" {"typedef", TYPEDEF_KEYW}, -#line 17 "scripts/genksyms/keywords.gperf" +#line 15 "scripts/genksyms/keywords.gperf" {"__inline", INLINE_KEYW}, -#line 33 "scripts/genksyms/keywords.gperf" +#line 31 "scripts/genksyms/keywords.gperf" {"auto", AUTO_KEYW}, -#line 21 "scripts/genksyms/keywords.gperf" - {"__volatile", VOLATILE_KEYW}, +#line 47 "scripts/genksyms/keywords.gperf" + {"union", UNION_KEYW}, {""}, {""}, -#line 50 "scripts/genksyms/keywords.gperf" +#line 48 "scripts/genksyms/keywords.gperf" {"unsigned", UNSIGNED_KEYW}, - {""}, -#line 44 "scripts/genksyms/keywords.gperf" +#line 49 "scripts/genksyms/keywords.gperf" + {"void", VOID_KEYW}, +#line 42 "scripts/genksyms/keywords.gperf" {"short", SHORT_KEYW}, -#line 40 "scripts/genksyms/keywords.gperf" + {""}, {""}, +#line 50 "scripts/genksyms/keywords.gperf" + {"volatile", VOLATILE_KEYW}, + {""}, +#line 37 "scripts/genksyms/keywords.gperf" + {"float", FLOAT_KEYW}, +#line 34 "scripts/genksyms/keywords.gperf" + {"double", DOUBLE_KEYW}, + {""}, +#line 5 "scripts/genksyms/keywords.gperf" + {"EXPORT_SYMBOL", EXPORT_SYMBOL_KEYW}, + {""}, {""}, +#line 38 "scripts/genksyms/keywords.gperf" {"inline", INLINE_KEYW}, +#line 6 "scripts/genksyms/keywords.gperf" + {"EXPORT_SYMBOL_GPL", EXPORT_SYMBOL_KEYW}, +#line 41 "scripts/genksyms/keywords.gperf" + {"register", REGISTER_KEYW}, {""}, -#line 52 "scripts/genksyms/keywords.gperf" - {"volatile", VOLATILE_KEYW}, -#line 42 "scripts/genksyms/keywords.gperf" - {"long", LONG_KEYW}, -#line 24 "scripts/genksyms/keywords.gperf" +#line 22 "scripts/genksyms/keywords.gperf" {"_Bool", BOOL_KEYW}, - {""}, {""}, #line 43 "scripts/genksyms/keywords.gperf" - {"register", REGISTER_KEYW}, -#line 51 "scripts/genksyms/keywords.gperf" - {"void", VOID_KEYW}, -#line 39 "scripts/genksyms/keywords.gperf" - {"float", FLOAT_KEYW}, -#line 36 "scripts/genksyms/keywords.gperf" - {"double", DOUBLE_KEYW}, - {""}, {""}, {""}, {""}, -#line 45 "scripts/genksyms/keywords.gperf" - {"signed", SIGNED_KEYW} + {"signed", SIGNED_KEYW}, + {""}, {""}, +#line 40 "scripts/genksyms/keywords.gperf" + {"long", LONG_KEYW} }; if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH) diff --git a/scripts/genksyms/keywords.gperf b/scripts/genksyms/keywords.gperf index 8abe7ab8d88f..5ef3733225fb 100644 --- a/scripts/genksyms/keywords.gperf +++ b/scripts/genksyms/keywords.gperf @@ -5,8 +5,6 @@ struct resword { const char *name; int token; } EXPORT_SYMBOL, EXPORT_SYMBOL_KEYW EXPORT_SYMBOL_GPL, EXPORT_SYMBOL_KEYW EXPORT_SYMBOL_GPL_FUTURE, EXPORT_SYMBOL_KEYW -EXPORT_UNUSED_SYMBOL, EXPORT_SYMBOL_KEYW -EXPORT_UNUSED_SYMBOL_GPL, EXPORT_SYMBOL_KEYW __asm, ASM_KEYW __asm__, ASM_KEYW __attribute, ATTRIBUTE_KEYW diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c index 92758120a767..ad2434b26970 100644 --- a/scripts/kallsyms.c +++ b/scripts/kallsyms.c @@ -130,9 +130,18 @@ static int read_symbol(FILE *in, struct sym_entry *s) static int symbol_valid(struct sym_entry *s) { /* Symbols which vary between passes. Passes 1 and 2 must have - * identical symbol lists. + * 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. */ static char *special_symbols[] = { + "kallsyms_addresses", + "kallsyms_num_syms", + "kallsyms_names", + "kallsyms_markers", + "kallsyms_token_table", + "kallsyms_token_index", + /* Exclude linker generated symbols which vary between passes */ "_SDA_BASE_", /* ppc */ "_SDA2_BASE_", /* ppc */ @@ -164,9 +173,7 @@ static int symbol_valid(struct sym_entry *s) } /* Exclude symbols which vary between passes. */ - if (strstr((char *)s->sym + offset, "_compiled.") || - strncmp((char*)s->sym + offset, "__compound_literal.", 19) == 0 || - strncmp((char*)s->sym + offset, "__compound_literal$", 19) == 0) + if (strstr((char *)s->sym + offset, "_compiled.")) return 0; for (i = 0; special_symbols[i]; i++) @@ -543,10 +550,8 @@ int main(int argc, char **argv) usage(); read_map(stdin); - if (table_cnt) { - sort_symbols(); - optimize_token_table(); - } + sort_symbols(); + optimize_token_table(); write_src(); return 0; diff --git a/scripts/mksysmap b/scripts/mksysmap index 1db316a3712b..6e133a0bae7a 100644 --- a/scripts/mksysmap +++ b/scripts/mksysmap @@ -37,6 +37,9 @@ # readprofile starts reading symbols when _stext is found, and # continue until it finds a symbol which is not either of 'T', 't', -# 'W' or 'w'. +# 'W' or 'w'. __crc_ are 'A' and placed in the middle +# so we just ignore them to let readprofile continue to work. +# (At least sparc64 has __crc_ in the middle). + +$NM -n $1 | grep -v '\( [aNUw] \)\|\(__crc_\)\|\( \$[adt]\)' > $2 -$NM -n $1 | grep -v '\( [aNUw] \)\|\( \$[adt]\)' > $2 diff --git a/scripts/strip-symbols b/scripts/strip-symbols deleted file mode 100644 index 29ee8c1a014b..000000000000 --- a/scripts/strip-symbols +++ /dev/null @@ -1,22 +0,0 @@ -<*> -*.h -__compound_literal[$.][0-9]* -__crc_[a-zA-Z_]* -__exitcall_[a-zA-Z_]* -__func__[$.][0-9]* -__FUNCTION__[$.][0-9]* -gcc[0-9]_compiled[$.] -__initcall_[a-zA-Z_]* -__kcrctab_[a-zA-Z_]* -__kstrtab_[a-zA-Z_]* -__ksymtab_[a-zA-Z_]* -__mod_[a-zA-Z_]*[0-9] -__module_depends -__param_[a-zA-Z_]* -__pci_fixup_*PCI_ANY_IDPCI_ANY_ID* -__pci_fixup_*PCI_ANY_IDPCI_DEVICE_ID_* -__pci_fixup_*PCI_VENDOR_ID_*PCI_ANY_ID* -__pci_fixup_*PCI_VENDOR_ID_*PCI_DEVICE_ID_* -__PRETTY_FUNCTION__[$.][0-9]* -__setup_[a-zA-Z_]* -____versions -- cgit v1.2.3-59-g8ed1b From 2302e8730e5caa774e7c6702fc878404d71f13f9 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Wed, 7 Jan 2009 22:33:15 +0100 Subject: kbuild: print usage with no arguments in scripts/config Requested by Sam. Signed-off-by: Andi Kleen Signed-off-by: Sam Ravnborg --- scripts/config | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/scripts/config b/scripts/config index 68b9761cdc38..db6084b78a10 100755 --- a/scripts/config +++ b/scripts/config @@ -60,6 +60,10 @@ else FN=.config fi +if [ "$1" = "" ] ; then + usage +fi + while [ "$1" != "" ] ; do CMD="$1" shift -- cgit v1.2.3-59-g8ed1b From df291fa993c506da89a89264ff8166bccd172a14 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Thu, 8 Jan 2009 10:59:34 -0800 Subject: kbuild: fix kbuild.txt typos Fix typos in the new kbuild.txt file. Signed-off-by: Randy Dunlap Signed-off-by: Sam Ravnborg --- Documentation/kbuild/kbuild.txt | 29 +++++++++++++++-------------- 1 file changed, 15 insertions(+), 14 deletions(-) diff --git a/Documentation/kbuild/kbuild.txt b/Documentation/kbuild/kbuild.txt index 923f9ddee8f6..f3355b6812df 100644 --- a/Documentation/kbuild/kbuild.txt +++ b/Documentation/kbuild/kbuild.txt @@ -3,7 +3,7 @@ Environment variables KCPPFLAGS -------------------------------------------------- Additional options to pass when preprocessing. The preprocessing options -will be used in all cases where kbuild do preprocessing including +will be used in all cases where kbuild does preprocessing including building C files and assembler files. KAFLAGS @@ -16,7 +16,7 @@ Additional options to the C compiler. KBUILD_VERBOSE -------------------------------------------------- -Set the kbuild verbosity. Can be assinged same values as "V=...". +Set the kbuild verbosity. Can be assigned same values as "V=...". See make help for the full list. Setting "V=..." takes precedence over KBUILD_VERBOSE. @@ -35,14 +35,14 @@ KBUILD_OUTPUT -------------------------------------------------- Specify the output directory when building the kernel. The output directory can also be specificed using "O=...". -Setting "O=..." takes precedence over KBUILD_OUTPUT +Setting "O=..." takes precedence over KBUILD_OUTPUT. ARCH -------------------------------------------------- Set ARCH to the architecture to be built. In most cases the name of the architecture is the same as the directory name found in the arch/ directory. -But some architectures suach as x86 and sparc has aliases. +But some architectures such as x86 and sparc have aliases. x86: i386 for 32 bit, x86_64 for 64 bit sparc: sparc for 32 bit, sparc64 for 64 bit @@ -63,7 +63,7 @@ CF is often used on the command-line like this: INSTALL_PATH -------------------------------------------------- INSTALL_PATH specifies where to place the updated kernel and system map -images. Default is /boot, but you can set it to other values +images. Default is /boot, but you can set it to other values. MODLIB @@ -90,7 +90,7 @@ INSTALL_MOD_STRIP will used as the options to the strip command. INSTALL_FW_PATH -------------------------------------------------- -INSTALL_FW_PATH specify where to install the firmware blobs. +INSTALL_FW_PATH specifies where to install the firmware blobs. The default value is: $(INSTALL_MOD_PATH)/lib/firmware @@ -99,7 +99,7 @@ The value can be overridden in which case the default value is ignored. INSTALL_HDR_PATH -------------------------------------------------- -INSTALL_HDR_PATH specify where to install user space headers when +INSTALL_HDR_PATH specifies where to install user space headers when executing "make headers_*". The default value is: @@ -112,22 +112,23 @@ The value can be overridden in which case the default value is ignored. KBUILD_MODPOST_WARN -------------------------------------------------- -KBUILD_MODPOST_WARN can be set to avoid error out in case of undefined -symbols in the final module linking stage. +KBUILD_MODPOST_WARN can be set to avoid errors in case of undefined +symbols in the final module linking stage. It changes such errors +into warnings. -KBUILD_MODPOST_FINAL +KBUILD_MODPOST_NOFINAL -------------------------------------------------- KBUILD_MODPOST_NOFINAL can be set to skip the final link of modules. -This is solely usefull to speed up test compiles. +This is solely useful to speed up test compiles. KBUILD_EXTRA_SYMBOLS -------------------------------------------------- -For modules use symbols from another modules. +For modules that use symbols from other modules. See more details in modules.txt. ALLSOURCE_ARCHS -------------------------------------------------- -For tags/TAGS/cscope targets, you can specify more than one archs -to be included in the databases, separated by blankspace. e.g. +For tags/TAGS/cscope targets, you can specify more than one arch +to be included in the databases, separated by blank space. E.g.: $ make ALLSOURCE_ARCHS="x86 mips arm" tags -- cgit v1.2.3-59-g8ed1b