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[Xen-devel] [PATCH] x86, cpufreq: fix ondemand governor to take aperf/mp
| To: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] [PATCH] x86, cpufreq: fix ondemand governor to take aperf/mperf feedback |
| From: | "Liu, Jinsong" <jinsong.liu@xxxxxxxxx> |
| Date: | Tue, 12 May 2009 11:00:31 +0800 |
| Accept-language: | en-US |
| Acceptlanguage: | en-US |
| Cc: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Delivery-date: | Mon, 11 May 2009 20:02:24 -0700 |
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| Thread-index: | AcnSrdAO/faLEMA6TdOH6Z8jwUbMBg== |
| Thread-topic: | [PATCH] x86, cpufreq: fix ondemand governor to take aperf/mperf feedback |
x86, cpufreq: fix ondemand governor to take aperf/mperf feedback APERF/MPERF MSRs provides feedback about actual freq in eplased time, which could be different from requested freq by governor. However currently ondemand governor only takes that feedback at freq down path. We should do that for scale up too. Signed-off-by: Liu, Jinsong <jinsong.liu@xxxxxxxxx>
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