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authorFenghua Yu <fenghua.yu@intel.com>2010-07-29 17:13:45 -0700
committerH. Peter Anvin <hpa@linux.intel.com>2010-08-03 15:58:56 -0700
commit0199114c31798af5b83841b21759b64171060d9b (patch)
treea50a9eb0b1f2a43fb92d6143931fb0f688d766e8 /drivers/hid/hid-ids.h
parent55d435a227bd28c77afab326de44dfacc0b15059 (diff)
x86, hwmon: Package Level Thermal/Power: power limit
Power limit notification feature is published in Intel 64 and IA-32 Architectures SDMV Vol 3A 14.5.6 Power Limit Notification. It is implemented first on Intel Sandy Bridge platform. The patch handles notification interrupt. Interrupt handler dumps power limit information in log_buf, logs the event in mce log, and increases the event counters (core_power_limit and package_power_limit). Upper level applications could use the data to detect system health or diagnose functionality/performance issues. In the future, the event could be handled in a more fancy way. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> LKML-Reference: <1280448826-12004-5-git-send-email-fenghua.yu@intel.com> Reviewed-by: Len Brown <len.brown@intel.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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