mirror of
https://github.com/torvalds/linux
synced 2024-09-06 18:01:05 +00:00
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>
This commit is contained in:
parent
96685b1710
commit
e2093c7b03
|
@ -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) \
|
||||
({ \
|
||||
BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
|
||||
cmpxchg((ptr), (o), (n)); \
|
||||
})
|
||||
|
||||
#ifdef CONFIG_64BIT
|
||||
#define cmpxchg64_local(ptr, o, n) \
|
||||
({ \
|
||||
BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
|
||||
cmpxchg_local((ptr), (o), (n)); \
|
||||
})
|
||||
|
||||
#define cmpxchg64(ptr, o, n) \
|
||||
({ \
|
||||
BUILD_BUG_ON(sizeof(*(ptr)) != 8); \
|
||||
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 */
|
||||
|
|
Loading…
Reference in a new issue