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MIPS: define local_xchg from xchg_local to atomic_long_xchg
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>
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@ -117,7 +117,7 @@ static __inline__ long local_sub_return(long i, local_t * l)
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#define local_cmpxchg(l, o, n) \
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((long)cmpxchg_local(&((l)->a.counter), (o), (n)))
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#define local_xchg(l, n) (xchg_local(&((l)->a.counter), (n)))
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#define local_xchg(l, n) (atomic_long_xchg((&(l)->a), (n)))
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/**
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* local_add_unless - add unless the number is a given value
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