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atomic_ops.txt: mention local_t
local_t is a variant of atomic_t and has related ops to match. Add reference for local_t documentation to atomic_ops.txt. Signed-off-by: Grant Grundler <grundler@parisc-linux.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -14,6 +14,10 @@ suffice:
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typedef struct { volatile int counter; } atomic_t;
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local_t is very similar to atomic_t. If the counter is per CPU and only
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updated by one CPU, local_t is probably more appropriate. Please see
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Documentation/local_ops.txt for the semantics of local_t.
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The first operations to implement for atomic_t's are the
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initializers and plain reads.
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