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MIPS: Use generic atomic64 for 32-bit kernels

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The 64-bit 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@gmail.com>
To: linux-mips@linux-mips.org
Cc: a.p.zijlstra@chello.nl
Cc: paulus@samba.org
Cc: mingo@elte.hu
Cc: acme@redhat.com
Cc: jamie.iles@picochip.com
Patchwork: https://patchwork.linux-mips.org/patch/1361/
Acked-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Deng-Cheng Zhu 2010-06-09 12:35:25 +08:00 committed by Ralf Baechle
parent 543001f8d8
commit 2b78920d19
2 changed files with 5 additions and 0 deletions
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1
arch/mips/Kconfig
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@ -13,6 +13,7 @@ config MIPS
select HAVE_KPROBES
select HAVE_KRETPROBES
select RTC_LIB if !MACH_LOONGSON
select GENERIC_ATOMIC64 if !64BIT
mainmenu "Linux/MIPS Kernel Configuration"

4
arch/mips/include/asm/atomic.h
View file

@ -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 */
/*