Commits
David S. Miller committed 6e02493a7f3
[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>