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authorAndre Przywara <andre.przywara@amd.com>2012-09-04 04:28:07 -0400
committerRafael J. Wysocki <rjw@sisk.pl>2012-09-09 16:05:12 -0400
commit615b7300717b9ad5c23d1f391843484fe30f6c12 (patch)
treea9773a2bb6ce4d411485402af45dcadf7fbefe28 /drivers/crypto
parentf594065faf4f9067c2283a34619fc0714e79a98d (diff)
acpi-cpufreq: Add support for disabling dynamic overclocking
One feature present in powernow-k8 that isn't present in acpi-cpufreq is support for enabling or disabling AMD's core performance boost technology. This patch adds support to acpi-cpufreq, but also includes support for Intel's dynamic acceleration. The original boost disabling sysfs file was per CPU, but acted globally. Also the naming (cpb) was at least not intuitive. So lets introduce a single file simply called "boost", which sits once in /sys/devices/system/cpu/cpufreq. This should be the only way of using this feature, so add documentation about the rationale and the usage. A following patch will re-introduce the cpb knob for compatibility reasons on AMD CPUs. Per-CPU boost switching is possible, but not trivial and is thus postponed to a later patch series. Signed-off-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
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