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| author |   Heiko Carstens <hca@linux.ibm.com> | 2021-04-17 14:48:32 +0200 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2021-04-18 21:32:02 +0200 |
| commit | a637b3bfa43aead7221b79cd92e092ef911c8253 (patch) | |
| tree | aba40f892ed3299a71148da73796841abc60f6f0 /arch/s390 | |
| parent | s390/smp: fix do_restart() prototype (diff) | |
| download | linux-dev-a637b3bfa43aead7221b79cd92e092ef911c8253.tar.xz linux-dev-a637b3bfa43aead7221b79cd92e092ef911c8253.zip | |
s390/atomic,cmpxchg: always inline __xchg/__cmpxchg
Make sure to always inline __xchg() and __cmpxchg() otherwise the
compiler might decide to generate out-of-line versions which will
fail at link time:
s390-linux-ld: lib/atomic64_test.o: in function `__xchg':
>> atomic64_test.c:(.text.unlikely+0xa4): undefined reference to `__xchg_called_with_bad_pointer'
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/linux-mm/202104170449.SIIFKVjT-lkp@intel.com/
Fixes: d2b1f6d2d350 ("s390/cmpxchg: get rid of gcc atomic builtins")
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/cmpxchg.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/s390/include/asm/cmpxchg.h b/arch/s390/include/asm/cmpxchg.h index e1eb65fceef2..1960a7295ae5 100644 --- a/arch/s390/include/asm/cmpxchg.h +++ b/arch/s390/include/asm/cmpxchg.h @@ -14,7 +14,8 @@ void __xchg_called_with_bad_pointer(void); -static inline unsigned long __xchg(unsigned long x, unsigned long address, int size) +static __always_inline unsigned long __xchg(unsigned long x, + unsigned long address, int size) { unsigned long old; int shift; @@ -83,8 +84,9 @@ static inline unsigned long __xchg(unsigned long x, unsigned long address, int s void __cmpxchg_called_with_bad_pointer(void); -static inline unsigned long __cmpxchg(unsigned long address, unsigned long old, - unsigned long new, int size) +static __always_inline unsigned long __cmpxchg(unsigned long address, + unsigned long old, + unsigned long new, int size) { unsigned long prev, tmp; int shift; |