David S. Miller 0f58189d4a sparc64: Make lock backoff really a NOP on UP builds. ...

As noticed by Mikulas Patocka, the backoff macros don't
completely nop out for UP builds, we still get a
branch always and a delay slot nop.

Fix this by making the branch to the backoff spin loop
selective, then we can nop out the spin loop completely.

Signed-off-by: David S. Miller <davem@davemloft.net>

2010-08-18 22:53:26 -07:00

2.7 KiB

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