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| author | Yinghai Lu <yhlu.kernel@gmail.com> | 2008-03-06 18:25:16 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-03-21 17:06:15 +0100 |
| commit | 7d2de1376226eab4660e162e0728eadd18db3c4a (patch) | |
| tree | 32afe25b43e723e0d649ad129dfef21865c172ed /arch/x86 | |
| parent | 6721fc0a0d87019b08384ac798ca7d51bc5fda4e (diff) | |
| download | linux-7d2de1376226eab4660e162e0728eadd18db3c4a.tar.gz linux-7d2de1376226eab4660e162e0728eadd18db3c4a.tar.bz2 linux-7d2de1376226eab4660e162e0728eadd18db3c4a.zip | |
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>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/setup64.c | 14 |
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; |