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MIPS: define local_xchg from xchg_local to atomic_long_xchg

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Perf-events is now using local_t helper functions internally. There is a
use of local_xchg(). On MIPS, this is defined to xchg_local() which is
missing in asm/system.h. This patch re-defines local_xchg() in asm/local.h
to atomic_long_xchg(). Then Perf-events can pass the build.

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
Cc: ddaney@caviumnetworks.com
Cc: matt@console-pimps.org
Patchwork: https://patchwork.linux-mips.org/patch/1687/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Deng-Cheng Zhu 2010-10-12 19:37:20 +08:00 committed by Ralf Baechle
parent 238dd317f7
commit 6dbd972850
1 changed files with 1 additions and 1 deletions
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arch/mips/include/asm/local.h
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@ -117,7 +117,7 @@ static __inline__ long local_sub_return(long i, local_t * l)
#define local_cmpxchg(l, o, n) \
((long)cmpxchg_local(&((l)->a.counter), (o), (n)))
#define local_xchg(l, n) (xchg_local(&((l)->a.counter), (n)))
#define local_xchg(l, n) (atomic_long_xchg((&(l)->a), (n)))
/**
* local_add_unless - add unless the number is a given value