Preempt-RCU: CPU Hotplug handling
authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Fri, 25 Jan 2008 20:08:25 +0000 (21:08 +0100)
committerIngo Molnar <mingo@elte.hu>
Fri, 25 Jan 2008 20:08:25 +0000 (21:08 +0100)
commiteaf649e9fe6685f4c5a392cd0e16df5fd6660b7c
tree05fb08fc2e8bf9e87e9892130f4bd6e147d5a69d
parente260be673a15b6125068270e0216a3bfbfc12f87
Preempt-RCU: CPU Hotplug handling

This patch allows preemptible RCU to tolerate CPU-hotplug operations.
It accomplishes this by maintaining a local copy of a map of online
CPUs, which it accesses under its own lock.

Signed-off-by: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
kernel/rcupreempt.c