Helge Deller e6eb5fe912 parisc: Drop LDCW barrier in CAS code when running UP ...

When running an SMP kernel on a single-CPU machine, we can speed up the
CAS code by replacing the LDCW sync barrier with NOP.

Signed-off-by: Helge Deller <deller@gmx.de>

2019-05-10 21:00:24 +02:00

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