00b30cf04a
Fix a call by tunables_write() to smp_processor_id() within a preemptable region. Call get_cpu()/put_cpu() around the region where the returned cpu number is actually used, which makes it non-preemptable. A DEBUG_PREEMPT warning is prevented. UV does not support cpu hotplug yet, but this is a step toward that ability as well. Signed-off-by: Cliff Wickman <cpw@sgi.com> Link: http://lkml.kernel.org/r/20110621122242.086384966@sgi.com Signed-off-by: Ingo Molnar <mingo@elte.hu>