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[Xen-devel] [PATCH]x86: Remove redundant clear for cpu_online_map.
| To: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] [PATCH]x86: Remove redundant clear for cpu_online_map. |
| From: | "Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx> |
| Date: | Tue, 30 Mar 2010 13:41:23 +0800 |
| Accept-language: | en-US |
| Acceptlanguage: | en-US |
| Cc: | "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Mon, 29 Mar 2010 22:42:50 -0700 |
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| Thread-index: | AcrPy6GQmLLvZ5OZQz+le7hjxDrZ3Q== |
| Thread-topic: | [PATCH]x86: Remove redundant clear for cpu_online_map. |
As Yunhong indicated, the second clear for cpu_online_map should be redundant,
remove it.
x86: Remove redundant clear for cpu_online_map.
Remove it, maybe caused by accident diff operation.
Signed-off-by: Xiantao Zhang <xiantao.zhang@xxxxxxxxx>
diff -r b60379dad533 xen/arch/x86/smpboot.c
--- a/xen/arch/x86/smpboot.c Fri Feb 05 13:57:20 2010 +0000
+++ b/xen/arch/x86/smpboot.c Tue Mar 30 11:33:37 2010 +0800
@@ -1304,10 +1304,9 @@ int __cpu_disable(void)
remove_siblinginfo(cpu);
+ /* It's now safe to remove this processor from the online map */
cpu_clear(cpu, cpu_online_map);
fixup_irqs();
- /* It's now safe to remove this processor from the online map */
- cpu_clear(cpu, cpu_online_map);
cpu_disable_scheduler()
Xiantao
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