On 05/27/2010 06:03 AM, Deng-Cheng Zhu wrote:
64bit kernel has already had its atomic64 functions. Except for that, we use the generic spinlocked version. The atomic64 types and related functions are needed for the Linux performance counter subsystem. Signed-off-by: Deng-Cheng Zhu<dengcheng.zhu@xxxxxxxxx>
Acked-by: David Daney <ddaney@xxxxxxxxxxxxxxxxxx>
--- arch/mips/Kconfig | 1 + arch/mips/include/asm/atomic.h | 4 ++++ 2 files changed, 5 insertions(+), 0 deletions(-) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index cdaae94..ef3d8ca 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -4,6 +4,7 @@ config MIPS select HAVE_GENERIC_DMA_COHERENT select HAVE_IDE select HAVE_OPROFILE + select GENERIC_ATOMIC64 if !64BIT select HAVE_ARCH_KGDB select HAVE_FUNCTION_TRACER select HAVE_FUNCTION_TRACE_MCOUNT_TEST diff --git a/arch/mips/include/asm/atomic.h b/arch/mips/include/asm/atomic.h index 59dc0c7..23990cb 100644 --- a/arch/mips/include/asm/atomic.h +++ b/arch/mips/include/asm/atomic.h @@ -782,6 +782,10 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u) */ #define atomic64_add_negative(i, v) (atomic64_add_return(i, (v))< 0) +#else /* ! CONFIG_64BIT */ + +#include<asm-generic/atomic64.h> + #endif /* CONFIG_64BIT */ /*
