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    Subject[patch 22/23] Add cmpxchg_local to v850
    Use the new generic cmpxchg_local (disables interrupt). Also use the generic
    cmpxchg as fallback if SMP is not set.

    Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
    CC: clameter@sgi.com
    ---
    include/asm-v850/system.h | 15 +++++++++++++++
    1 file changed, 15 insertions(+)

    Index: linux-2.6-lttng/include/asm-v850/system.h
    ===================================================================
    --- linux-2.6-lttng.orig/include/asm-v850/system.h 2007-07-23 11:28:45.000000000 -0400
    +++ linux-2.6-lttng/include/asm-v850/system.h 2007-07-23 11:28:57.000000000 -0400
    @@ -104,6 +104,21 @@ static inline unsigned long __xchg (unsi
    return tmp;
    }

    +#include <asm-generic/cmpxchg-local.h>
    +
    +/*
    + * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make
    + * them available.
    + */
    +#define cmpxchg_local(ptr,o,n) \
    + (__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o), \
    + (unsigned long)(n), sizeof(*(ptr)))
    +#define cmpxchg64_local(ptr,o,n) __cmpxchg64_local_generic((ptr), (o), (n))
    +
    +#ifndef CONFIG_SMP
    +#include <asm-generic/cmpxchg.h>
    +#endif
    +
    #define arch_align_stack(x) (x)

    #endif /* __V850_SYSTEM_H__ */
    --
    Mathieu Desnoyers
    Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
    OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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