Hi All,
With a variant of a CLANG(based on 4.0) following errors observed on
Linux 4.12-rc5 tag.
net/built-in.o: In function `__xchg_mb':
arch/arm64/include/asm/cmpxchg.h:99: \
undefined reference to `__compiletime_assert_99'
arch/arm64/include/asm/cmpxchg.h:99: \
undefined reference to `__compiletime_assert_99
Clang does not seems to be marking this macro as inline and causing
above compilation issue due to BUILD_BUG().
We added __always_inline attribute to this macro as shown below, so
that clang forces this macro to be always inline.
Based on definition of __xchg##sfx, it should always be inline. Can we
force this macro to be __always_inline ?
diff --git a/arch/arm64/include/asm/cmpxchg.h
b/arch/arm64/include/asm/cmpxchg.h
index ae852ad..ce57cec 100644
--- a/arch/arm64/include/asm/cmpxchg.h
+++ b/arch/arm64/include/asm/cmpxchg.h
@@ -73,7 +73,7 @@
#undef __XCHG_CASE
#define __XCHG_GEN(sfx)
\
-static inline unsigned long __xchg##sfx(unsigned long x,
\
+static __always_inline unsigned long __xchg##sfx(unsigned long x,
\
volatile void *ptr,
\
int size)
\
{
\
-Thanks, Prasad
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