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[Xen-devel] [PATCH1/6] cpuidle: fix wrapped ticks calculation for pm tim
| To: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] [PATCH1/6] cpuidle: fix wrapped ticks calculation for pm timer |
| From: | "Wei, Gang" <gang.wei@xxxxxxxxx> |
| Date: | Thu, 17 Jun 2010 15:37:31 +0800 |
| Accept-language: | zh-CN, en-US |
| Acceptlanguage: | zh-CN, en-US |
| Cc: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, "Wei, Gang" <gang.wei@xxxxxxxxx> |
| Delivery-date: | Thu, 17 Jun 2010 00:40:13 -0700 |
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| Thread-index: | AcsN7/H48kncRMmqROS1Td1tlotXYg== |
| Thread-topic: | [PATCH1/6] cpuidle: fix wrapped ticks calculation for pm timer |
cpuidle: fix wrapped ticks calculation for pm timer.
Signed-off-by: Wei Gang <gang.wei@xxxxxxxxx>
diff -r 26c2922da53c xen/arch/x86/acpi/cpu_idle.c
--- a/xen/arch/x86/acpi/cpu_idle.c Thu May 27 09:39:47 2010 +0100
+++ b/xen/arch/x86/acpi/cpu_idle.c Sun Jun 13 06:44:32 2010 +0800
@@ -137,9 +137,9 @@ static inline u32 ticks_elapsed(u32 t1,
if ( t2 >= t1 )
return (t2 - t1);
else if ( !(acpi_gbl_FADT.flags & ACPI_FADT_32BIT_TIMER) )
- return (((0x00FFFFFF - t1) + t2) & 0x00FFFFFF);
+ return (((0x00FFFFFF - t1) + t2 + 1) & 0x00FFFFFF);
else
- return ((0xFFFFFFFF - t1) + t2);
+ return ((0xFFFFFFFF - t1) + t2 +1);
}
static void acpi_safe_halt(void)
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