| commit | 6e02493a7f33ac89e698b980a657d77ab2749eaf | [log] [tgz] |
|---|---|---|
| author | David S. Miller <davem@sunset.davemloft.net> | Sun Feb 05 20:47:26 2006 -0800 |
| committer | David S. Miller <davem@sunset.davemloft.net> | Mon Mar 20 01:11:47 2006 -0800 |
| tree | fcb6a17c2222a1aa601faf95a50a92b7a7a9224a | |
| parent | d619d7f11670f5b1cfca30e6645e44c8a6014820 [diff] |
[SPARC64]: Fill dead cycles on trap entry with real work. As we save trap state onto the stack, the store buffer fills up mid-way through and we stall for several cycles as the store buffer trickles out to the L2 cache. Meanwhile we can do some privileged register reads and other calculations, essentially for free. Signed-off-by: David S. Miller <davem@davemloft.net>