x86: print per_cpu data address

to make sure per_cpu data on correct node.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index f7745f9..61f3966 100644 (file)
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -180,9 +180,16 @@ void __init setup_per_cpu_areas(void)
                        printk(KERN_INFO
                               "cpu %d has no node %d or node-local memory\n",
                                cpu, node);
+                       if (ptr)
+                               printk(KERN_DEBUG "per cpu data for cpu%d at %016lx\n",
+                                        cpu, __pa(ptr));
                }
-               else
+               else {
                        ptr = alloc_bootmem_pages_node(NODE_DATA(node), size);
+                       if (ptr)
+                               printk(KERN_DEBUG "per cpu data for cpu%d on node%d at %016lx\n",
+                                        cpu, node, __pa(ptr));
+               }
 #endif
                per_cpu_offset(cpu) = ptr - __per_cpu_start;
                memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start);