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authorLinus Torvalds <torvalds@linux-foundation.org>2020-09-27 12:18:57 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-09-27 12:18:57 -0700
commit16bc1d5432ebd8e50e480eb300fd2b84afa28286 (patch)
tree6796b089472e86f88a6deb24042badc2031873b4
parentf8818559ca6251adbcd9408dc1ebe3b832f3e1d7 (diff)
parente30d694c3381b565e043cf74b0bed059db1b4ac9 (diff)
downloadlinux-stericsson-16bc1d5432ebd8e50e480eb300fd2b84afa28286.tar.gz
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.*
-rw-r--r--Documentation/kbuild/llvm.rst4
-rw-r--r--scripts/kallsyms.c16
2 files changed, 17 insertions, 3 deletions
diff --git a/Documentation/kbuild/llvm.rst b/Documentation/kbuild/llvm.rst
index 334df758dce3..dae90c21aed3 100644
--- a/Documentation/kbuild/llvm.rst
+++ b/Documentation/kbuild/llvm.rst
@@ -39,10 +39,10 @@ which can help simplify cross compiling. ::
ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- make CC=clang
``CROSS_COMPILE`` is not used to prefix the Clang compiler binary, instead
-``CROSS_COMPILE`` is used to set a command line flag: ``--target <triple>``. For
+``CROSS_COMPILE`` is used to set a command line flag: ``--target=<triple>``. For
example: ::
- clang --target aarch64-linux-gnu foo.c
+ clang --target=aarch64-linux-gnu foo.c
LLVM Utilities
--------------
diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index 0096cd965332..7ecd2ccba531 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -82,6 +82,7 @@ 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
@@ -104,6 +105,7 @@ static bool is_ignored_symbol(const char *name, char type)
NULL
};
+ /* Symbol names that begin with the following are ignored.*/
static const char * const ignored_prefixes[] = {
"$", /* local symbols for ARM, MIPS, etc. */
".LASANPC", /* s390 kasan local symbols */
@@ -113,6 +115,7 @@ static bool is_ignored_symbol(const char *name, char type)
NULL
};
+ /* Symbol names that end with the following are ignored.*/
static const char * const ignored_suffixes[] = {
"_from_arm", /* arm */
"_from_thumb", /* arm */
@@ -120,9 +123,15 @@ static bool is_ignored_symbol(const char *name, char type)
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;
- /* Exclude symbols which vary between passes. */
for (p = ignored_symbols; *p; p++)
if (!strcmp(name, *p))
return true;
@@ -138,6 +147,11 @@ static bool is_ignored_symbol(const char *name, char type)
return true;
}
+ for (p = ignored_matches; *p; p++) {
+ if (strstr(name, *p))
+ return true;
+ }
+
if (type == 'U' || type == 'u')
return true;
/* exclude debugging symbols */