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authorYinghai Lu <yhlu.kernel@gmail.com>2008-03-06 18:25:16 -0800
committerIngo Molnar <mingo@elte.hu>2008-03-21 17:06:15 +0100
commit7d2de1376226eab4660e162e0728eadd18db3c4a (patch)
tree32afe25b43e723e0d649ad129dfef21865c172ed
parent6721fc0a0d87019b08384ac798ca7d51bc5fda4e (diff)
x86: tight online check in setup_per_cpu_areas
when numa disabled I got this compile warning: arch/x86/kernel/setup64.c: In function setup_per_cpu_areas: arch/x86/kernel/setup64.c:147: warning: the address of contig_page_data will always evaluate as true it seems we missed checking if the node is online before we try to refer NODE_DATA. Fix it. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
-rw-r--r--arch/x86/kernel/setup64.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/x86/kernel/setup64.c b/arch/x86/kernel/setup64.c
index 309366f8f603..e24c45677094 100644
--- a/arch/x86/kernel/setup64.c
+++ b/arch/x86/kernel/setup64.c
@@ -142,14 +142,16 @@ void __init setup_per_cpu_areas(void)
printk(KERN_INFO "PERCPU: Allocating %lu bytes of per cpu data\n", size);
for_each_cpu_mask (i, cpu_possible_map) {
char *ptr;
+#ifndef CONFIG_NEED_MULTIPLE_NODES
+ ptr = alloc_bootmem_pages(size);
+#else
+ int node = early_cpu_to_node(i);
- if (!NODE_DATA(early_cpu_to_node(i))) {
- printk("cpu with no node %d, num_online_nodes %d\n",
- i, num_online_nodes());
+ if (!node_online(node) || !NODE_DATA(node))
ptr = alloc_bootmem_pages(size);
- } else {
- ptr = alloc_bootmem_pages_node(NODE_DATA(early_cpu_to_node(i)), size);
- }
+ else
+ ptr = alloc_bootmem_pages_node(NODE_DATA(node), size);
+#endif
if (!ptr)
panic("Cannot allocate cpu data for CPU %d\n", i);
cpu_pda(i)->data_offset = ptr - __per_cpu_start;