@@ -24,6 +24,6 @@
#define ARCH_SLAB_MINALIGN 8
#endif
-#define __read_mostly __attribute__((__section__(".data..read_mostly")))
+#define __read_mostly __section(.data..read_mostly)
#endif
@@ -81,7 +81,7 @@ extern const struct machine_desc __arch_info_begin[], __arch_info_end[];
#define MACHINE_START(_type,_name) \
static const struct machine_desc __mach_desc_##_type \
__used \
- __attribute__((__section__(".arch.info.init"))) = { \
+ __section(.arch.info.init) = { \
.nr = MACH_TYPE_##_type, \
.name = _name,
@@ -91,7 +91,7 @@ static const struct machine_desc __mach_desc_##_type \
#define DT_MACHINE_START(_name, _namestr) \
static const struct machine_desc __mach_desc_##_name \
__used \
- __attribute__((__section__(".arch.info.init"))) = { \
+ __section(.arch.info.init) = { \
.nr = ~0, \
.name = _namestr,
@@ -14,7 +14,7 @@
#include <uapi/asm/setup.h>
-#define __tag __used __attribute__((__section__(".taglist.init")))
+#define __tag __used __section(.taglist.init)
#define __tagtable(tag, fn) \
static const struct tagtable __tagtable_##fn __tag = { tag, fn }
GCC unescapes escaped string section names while Clang does not. Because __section uses the `#` stringification operator for the section name, it doesn't need to be escaped. Instead, we should: 1. Prefer __section(.section_name_no_quotes). 2. Only use __attribute__((__section__(".section"))) when creating the section name via C preprocessor (see the definition of __define_initcall in arch/um/include/shared/init.h). This antipattern was found with: $ grep -e __section\(\" -e __section__\(\" -r See the discussions in: Link: https://bugs.llvm.org/show_bug.cgi?id=42950 Link: https://marc.info/?l=linux-netdev&m=156412960619946&w=2 Link: https://github.com/ClangBuiltLinux/linux/issues/619 Reported-by: Sedat Dilek <sedat.dilek@gmail.com> Suggested-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> --- arch/arm/include/asm/cache.h | 2 +- arch/arm/include/asm/mach/arch.h | 4 ++-- arch/arm/include/asm/setup.h | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) -- 2.23.0.187.g17f5b7556c-goog