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    Subject[PATCH 3/6] asm-generic/atomic.h: add atomic_set_mask helper
    Date
    Since arches are expected to implement this guy, add a common version
    for people the same way as atomic_clear_mask is handled.

    Signed-off-by: Mike Frysinger <vapier@gentoo.org>
    ---
    include/asm-generic/atomic.h | 16 ++++++++++++++++
    1 files changed, 16 insertions(+), 0 deletions(-)

    diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h
    index 28f5939..8275ecd 100644
    --- a/include/asm-generic/atomic.h
    +++ b/include/asm-generic/atomic.h
    @@ -157,6 +157,22 @@ static inline void atomic_clear_mask(unsigned long mask, atomic_t *v)
    raw_local_irq_restore(flags);
    }

    +/**
    + * atomic_set_mask - Atomically set bits in atomic variable
    + * @mask: Mask of the bits to be set
    + * @v: pointer of type atomic_t
    + *
    + * Atomically sets the bits set in @mask in @v
    + */
    +static inline void atomic_set_mask(unsigned int mask, atomic_t *v)
    +{
    + unsigned long flags;
    +
    + raw_local_irq_save(flags); /* Don't trace it in a irqsoff handler */
    + v->counter |= mask;
    + raw_local_irq_restore(flags);
    +}
    +
    /* Assume that atomic operations are already serializing */
    #define smp_mb__before_atomic_dec() barrier()
    #define smp_mb__after_atomic_dec() barrier()
    --
    1.7.5.3


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