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authorMichael Ellerman <mpe@ellerman.id.au>2014-01-15 18:14:29 +1100
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2014-01-28 14:45:44 +1100
commit7179ba52889bef7e5e23f72908270e1ab2b7fc6f (patch)
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parent3405d230b374b6923878b21b8d708d7db1f734ef (diff)
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powerpc: Implement arch_spin_is_locked() using arch_spin_value_unlocked()
At a glance these are just the inverse of each other. The one subtlety is that arch_spin_value_unlocked() takes the lock by value, rather than as a pointer, which is important for the lockref code. On the other hand arch_spin_is_locked() doesn't really care, so implement it in terms of arch_spin_value_unlocked(). Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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