forked from mirrors/linux
scripts/kallsyms: move compiler-generated symbol patterns to mksysmap
scripts/kallsyms.c maintains compiler-generated symbols, but we end up with something similar in scripts/mksysmap to avoid the "Inconsistent kallsyms data" error. For example, commitc17a253870("mksysmap: Fix the mismatch of 'L0' symbols in System.map"). They were separately maintained prior to commit94ff2f63d6("kbuild: reuse mksysmap output for kallsyms"). Now that scripts/kallsyms.c parses the output of scripts/mksysmap, it makes more sense to collect all the ignored patterns to mksysmap. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
This commit is contained in:
Masahiro Yamada
parent
ca09bf48f9
commit
320e7c9d44
2 changed files with 43 additions and 60 deletions
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@ -102,66 +102,6 @@ static char *sym_name(const struct sym_entry *s)
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static bool is_ignored_symbol(const char *name, char type)
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static bool is_ignored_symbol(const char *name, char type)
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{
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{
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/* Symbol names that exactly match to the following are ignored.*/
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static const char * const ignored_symbols[] = {
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/* Exclude linker generated symbols which vary between passes */
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"_SDA_BASE_", /* ppc */
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"_SDA2_BASE_", /* ppc */
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NULL
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};
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/* Symbol names that begin with the following are ignored.*/
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static const char * const ignored_prefixes[] = {
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"__efistub_", /* arm64 EFI stub namespace */
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"__kvm_nvhe_$", /* arm64 local symbols in non-VHE KVM namespace */
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"__kvm_nvhe_.L", /* arm64 local symbols in non-VHE KVM namespace */
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"__AArch64ADRPThunk_", /* arm64 lld */
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"__ARMV5PILongThunk_", /* arm lld */
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"__ARMV7PILongThunk_",
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"__ThumbV7PILongThunk_",
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"__LA25Thunk_", /* mips lld */
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"__microLA25Thunk_",
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"__kcfi_typeid_", /* CFI type identifiers */
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NULL
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};
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/* Symbol names that end with the following are ignored.*/
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static const char * const ignored_suffixes[] = {
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"_from_arm", /* arm */
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"_from_thumb", /* arm */
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"_veneer", /* arm */
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NULL
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};
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/* Symbol names that contain the following are ignored.*/
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static const char * const ignored_matches[] = {
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".long_branch.", /* ppc stub */
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".plt_branch.", /* ppc stub */
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NULL
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};
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const char * const *p;
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for (p = ignored_symbols; *p; p++)
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if (!strcmp(name, *p))
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return true;
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for (p = ignored_prefixes; *p; p++)
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if (!strncmp(name, *p, strlen(*p)))
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return true;
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for (p = ignored_suffixes; *p; p++) {
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int l = strlen(name) - strlen(*p);
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if (l >= 0 && !strcmp(name + l, *p))
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return true;
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}
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for (p = ignored_matches; *p; p++) {
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if (strstr(name, *p))
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return true;
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}
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if (type == 'u' || type == 'n')
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if (type == 'u' || type == 'n')
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return true;
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return true;
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@ -37,6 +37,28 @@ ${NM} -n ${1} | sed >${2} -e "
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# local labels, .LBB, .Ltmpxxx, .L__unnamed_xx, .LASANPC, etc.
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# local labels, .LBB, .Ltmpxxx, .L__unnamed_xx, .LASANPC, etc.
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/ \.L/d
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/ \.L/d
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# arm64 EFI stub namespace
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/ __efistub_/d
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# arm64 local symbols in non-VHE KVM namespace
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/ __kvm_nvhe_\$/d
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/ __kvm_nvhe_\.L/d
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# arm64 lld
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/ __AArch64ADRPThunk_/d
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# arm lld
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/ __ARMV5PILongThunk_/d
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/ __ARMV7PILongThunk_/d
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/ __ThumbV7PILongThunk_/d
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# mips lld
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/ __LA25Thunk_/d
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/ __microLA25Thunk_/d
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# CFI type identifiers
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/ __kcfi_typeid_/d
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# CRC from modversions
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# CRC from modversions
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/ __crc_/d
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/ __crc_/d
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@ -46,6 +68,15 @@ ${NM} -n ${1} | sed >${2} -e "
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# EXPORT_SYMBOL (namespace)
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# EXPORT_SYMBOL (namespace)
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/ __kstrtabns_/d
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/ __kstrtabns_/d
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# ---------------------------------------------------------------------------
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# Ignored suffixes
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# (do not forget '$' after each pattern)
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# arm
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/_from_arm$/d
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/_from_thumb$/d
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/_veneer$/d
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# ---------------------------------------------------------------------------
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# ---------------------------------------------------------------------------
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# Ignored symbols (exact match)
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# Ignored symbols (exact match)
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# (do not forget a space before and '$' after each pattern)
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# (do not forget a space before and '$' after each pattern)
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@ -53,6 +84,18 @@ ${NM} -n ${1} | sed >${2} -e "
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# for LoongArch?
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# for LoongArch?
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/ L0$/d
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/ L0$/d
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# ppc
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/ _SDA_BASE_$/d
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/ _SDA2_BASE_$/d
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# ---------------------------------------------------------------------------
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# Ignored patterns
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# (symbols that contain the pattern are ignored)
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# ppc stub
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/\.long_branch\./d
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/\.plt_branch\./d
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# ---------------------------------------------------------------------------
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# ---------------------------------------------------------------------------
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# Ignored kallsyms symbols
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# Ignored kallsyms symbols
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#
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#
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