Merge branch 'sparc64-Use-low-latency-path-to-resume-idle-cpu'
authorDavid S. Miller <davem@davemloft.net>
Thu, 10 Aug 2017 05:15:31 +0000 (22:15 -0700)
committerDavid S. Miller <davem@davemloft.net>
Thu, 10 Aug 2017 05:15:31 +0000 (22:15 -0700)
Vijay Kumar says:

====================
sparc64: Use low latency path to resume idle cpu

CPU_POKE is a low latency path to resume the target cpu if suspended
using CPU_YIELD. Use CPU_POKE to resume cpu if supported by hypervisor.

     Hackbench results (lower is better):
Number of
Process: w/o fix with fix
1   0.012  0.010
10 0.021  0.019
100 0.151  0.148

Changelog:
v2:
  - Fixed comments and spacing (2/2)
====================

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

Trivial merge