x86: not set node to cpu_to_node if the node is not online
resolve boot problem reported by Mel Gorman: http://lkml.org/lkml/2008/2/13/404 init_cpu_to_node will use cpu->apic (from MADT or mptable) and apic->node(from SRAT or AMD config space with k8_bus_64.c) to have cpu->node mapping, and later identify_cpu will overwrite them again...(with nearby_node...) this patch checks if the node is online, otherwise it will not update cpu_node map. so keep cpu_node map to online node before identify_cpu..., to prevent possible error. Signed-off-by: NYinghai Lu <yinghai.lu@sun.com> Signed-off-by: NIngo Molnar <mingo@elte.hu> Acked-by: NThomas Gleixner <tglx@linutronix.de>
Showing
想要评论请 注册 或 登录