| commit | e9b9eb59ffcdee09ec96b040f85c919618f4043e | [log] [tgz] |
|---|---|---|
| author | David S. Miller <davem@davemloft.net> | Sat Oct 27 23:00:41 2012 -0700 |
| committer | David S. Miller <davem@davemloft.net> | Sat Oct 27 23:00:41 2012 -0700 |
| tree | 30f93cc20aa577ec5b12f609641fdf84d0bd5124 | |
| parent | 270c10e00a1e557e068803a22e0556281ceb1830 [diff] |
sparc64: Use pause instruction when available. In atomic backoff and cpu_relax(), use the pause instruction found on SPARC-T4 and later. It makes the cpu strand unselectable for the given number of cycles, unless an intervening disrupting trap occurs. Signed-off-by: David S. Miller <davem@davemloft.net>