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[Xen-devel] [PATCH] solve spinlock bug in s3 cpufreq path
| To: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] [PATCH] solve spinlock bug in s3 cpufreq path |
| From: | "Tian, Kevin" <kevin.tian@xxxxxxxxx> |
| Date: | Thu, 5 Feb 2009 18:16:50 +0800 |
| Accept-language: | en-US |
| Acceptlanguage: | en-US |
| Delivery-date: | Thu, 05 Feb 2009 02:17:30 -0800 |
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| Thread-index: | AcmHetwBk4Ft78VbSeKVfAQwVqqoeQ== |
| Thread-topic: | [PATCH] solve spinlock bug in s3 cpufreq path |
solve spinlock bug in s3 cpufreq path.
Signed-off-by Kevin Tian <kevin.tian@xxxxxxxxx>
diff -r ae18e0ffa801 xen/arch/x86/smpboot.c
--- a/xen/arch/x86/smpboot.c Wed Feb 04 20:03:08 2009 -0500
+++ b/xen/arch/x86/smpboot.c Wed Feb 04 22:41:20 2009 -0500
@@ -1256,8 +1256,6 @@
mdelay(1);
local_irq_disable();
- cpufreq_del_cpu(cpu);
-
time_suspend();
cpu_mcheck_disable();
@@ -1320,6 +1318,8 @@
}
printk("Prepare to bring CPU%d down...\n", cpu);
+
+ cpufreq_del_cpu(cpu);
err = stop_machine_run(take_cpu_down, NULL, cpu);
if (err < 0)
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