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[Xen-devel] [PATCH 1/4] CPUIDLE: Avoid remnant HPET intr while force hpetbroadcast


  • To: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: "Wei, Gang" <gang.wei@xxxxxxxxx>
  • Date: Tue, 9 Sep 2008 16:26:18 +0800
  • Accept-language: en-US
  • Acceptlanguage: en-US
  • Delivery-date: Tue, 09 Sep 2008 01:26:56 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AckSVbt3RZH2b6snQDWQ0RMO3HC+Dw==
  • Thread-topic: [PATCH 1/4] CPUIDLE: Avoid remnant HPET intr while force hpetbroadcast

CPUIDLE: Avoid remnant HPET intr while force hpetbroadcast

Exit from C3 is mainly caused by HPET intr if force enable hpetbroadcast. But 
it is still probably caused by other unexpected events. In this case the HPET 
timer may still be alive while there is no CPU in C3. Avoid those remnant HPET 
intr can save cpu handling time and increase idle time.

Signed-off-by: Wei Gang <gang.wei@xxxxxxxxx>

Attachment: cancel_useless_hpet_0909.patch
Description: cancel_useless_hpet_0909.patch

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