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Commit16bc1d5

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Merge tag 'kbuild-fixes-v5.9-4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada: - ignore compiler stubs for PPC to fix builds - fix the usage of --target mentioned in the LLVM document* tag 'kbuild-fixes-v5.9-4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: Documentation/llvm: Fix clang target examples scripts/kallsyms: skip ppc compiler stub *.long_branch.* / *.plt_branch.*
2 parentsf881855 +e30d694 commit16bc1d5

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‎Documentation/kbuild/llvm.rst‎

Lines changed: 2 additions & 2 deletions
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@@ -39,10 +39,10 @@ which can help simplify cross compiling. ::
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ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- make CC=clang
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``CROSS_COMPILE`` is not used to prefix the Clang compiler binary, instead
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``CROSS_COMPILE`` is used to set a command line flag: ``--target<triple>``. For
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``CROSS_COMPILE`` is used to set a command line flag: ``--target=<triple>``. For
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example: ::
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clang --targetaarch64-linux-gnu foo.c
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clang --target=aarch64-linux-gnu foo.c
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LLVM Utilities
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--------------

‎scripts/kallsyms.c‎

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Original file line numberDiff line numberDiff line change
@@ -82,6 +82,7 @@ static char *sym_name(const struct sym_entry *s)
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staticboolis_ignored_symbol(constchar*name,chartype)
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{
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/* Symbol names that exactly match to the following are ignored.*/
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staticconstchar*constignored_symbols[]= {
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/*
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* Symbols which vary between passes. Passes 1 and 2 must have
@@ -104,6 +105,7 @@ static bool is_ignored_symbol(const char *name, char type)
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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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staticconstchar*constignored_prefixes[]= {
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"$",/* local symbols for ARM, MIPS, etc. */
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".LASANPC",/* s390 kasan local symbols */
@@ -113,16 +115,23 @@ static bool is_ignored_symbol(const char *name, char type)
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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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staticconstchar*constignored_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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staticconstchar*constignored_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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constchar*const*p;
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/* Exclude symbols which vary between passes. */
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for (p=ignored_symbols;*p;p++)
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if (!strcmp(name,*p))
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return true;
@@ -138,6 +147,11 @@ static bool is_ignored_symbol(const char *name, char type)
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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=='u')
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return true;
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/* exclude debugging symbols */

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