tree 6467805ada12be5cd1d5136869bf1f031f441999
parent 6bf6a1a49377c32a02939ec835553703994f3e41
author Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1220205990 -0700
committer Tony Luck <tony.luck@intel.com> 1221069162 -0700

[IA64] prevent ia64 from invoking irq handlers on offline CPUs

Make ia64 refrain from clearing a given to-be-offlined CPU's bit in the
cpu_online_mask until it has processed pending irqs.  This change
prevents other CPUs from being blindsided by an apparently offline CPU
nevertheless changing globally visible state.  Also remove the existing
redundant cpu_clear(cpu, cpu_online_map).

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>