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authorLai Jiangshan <laijs@cn.fujitsu.com>2010-10-20 10:13:06 +0400
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2010-11-30 09:01:58 +0300
commit29494be71afe2a16ad04e344306a620d7cc22d06 (patch)
treed16a2acd1566be326483d5217d39b78d2ef798c5 /Documentation/RCU
parent7b27d5475f86186914e54e4a6bb994e9a985337b (diff)
downloadlinux-29494be71afe2a16ad04e344306a620d7cc22d06.tar.xz
rcu,cleanup: simplify the code when cpu is dying
When we handle the CPU_DYING notifier, the whole system is stopped except for the current CPU. We therefore need no synchronization with the other CPUs. This allows us to move any orphaned RCU callbacks directly to the list of any online CPU without needing to run them through the global orphan lists. These global orphan lists can therefore be dispensed with. This commit makes thes changes, though currently victimizes CPU 0 @@@. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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