diff options
| author | Deng-Cheng Zhu <dengcheng.zhu@imgtec.com> | 2015-03-07 10:30:20 -0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-04-01 17:21:25 +0200 |
| commit | e2093c7b03c116238dd8e36bdbe03fff97e1cae9 (patch) | |
| tree | 1058900a586f6f8255d47fa4d3a0e5e72fe2f455 /arch/mips/include/asm/cmpxchg.h | |
| parent | 96685b17108b4dbbbaea06307c3fcdb32eb152d0 (diff) | |
MIPS: Fall back to generic implementation of cmpxchg64 on 32-bit platforms
This is in preparation of adding HAVE_VIRT_CPU_ACCOUNTING_GEN support in
the next patch.
Without having cmpxchg64 to use the generic implementation, kernel linking
will complain:
kernel/built-in.o: In function `cputime_adjust':
cputime.c:(.text+0x33748): undefined reference to `__cmpxchg_called_with_bad_pointer'
cputime.c:(.text+0x33810): undefined reference to `__cmpxchg_called_with_bad_pointer'
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: macro@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9474/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/cmpxchg.h')
| -rw-r--r-- | arch/mips/include/asm/cmpxchg.h | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/mips/include/asm/cmpxchg.h b/arch/mips/include/asm/cmpxchg.h index d0a2a68ca600..412f945f1f5e 100644 --- a/arch/mips/include/asm/cmpxchg.h +++ b/arch/mips/include/asm/cmpxchg.h @@ -229,21 +229,22 @@ extern void __cmpxchg_called_with_bad_pointer(void); #define cmpxchg(ptr, old, new) __cmpxchg(ptr, old, new, smp_mb__before_llsc(), smp_llsc_mb()) #define cmpxchg_local(ptr, old, new) __cmpxchg(ptr, old, new, , ) -#define cmpxchg64(ptr, o, n) \ +#ifdef CONFIG_64BIT +#define cmpxchg64_local(ptr, o, n) \ ({ \ BUILD_BUG_ON(sizeof(*(ptr)) != 8); \ - cmpxchg((ptr), (o), (n)); \ + cmpxchg_local((ptr), (o), (n)); \ }) -#ifdef CONFIG_64BIT -#define cmpxchg64_local(ptr, o, n) \ +#define cmpxchg64(ptr, o, n) \ ({ \ BUILD_BUG_ON(sizeof(*(ptr)) != 8); \ - cmpxchg_local((ptr), (o), (n)); \ + cmpxchg((ptr), (o), (n)); \ }) #else #include <asm-generic/cmpxchg-local.h> #define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) +#define cmpxchg64(ptr, o, n) cmpxchg64_local((ptr), (o), (n)) #endif #endif /* __ASM_CMPXCHG_H */ |