tree 719d734fc3ef0f5fca3a7bf12a00dccfde278864
parent 0c34029abdfdea64420cb4264c4e91a776b22157
author Lai Jiangshan <laijs@cn.fujitsu.com> 1269945636 +0800
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1273514911 -0700

rcu: ignore offline CPUs in last non-dyntick-idle CPU check

Offline CPUs are not in nohz_cpu_mask, but can be ignored when checking
for the last non-dyntick-idle CPU.  This patch therefore only checks
online CPUs for not being dyntick idle, allowing fast entry into
full-system dyntick-idle state even when there are some offline CPUs.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>