intel_pstate: Use LFM bus ratio as min ratio/P state
authorDirk Brandewie <dirk.j.brandewie@intel.com>
Wed, 12 Feb 2014 18:01:06 +0000 (10:01 -0800)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Fri, 21 Feb 2014 00:22:40 +0000 (01:22 +0100)
commit4042e7570cff740460b75c6fc604c629621d3dd2
tree73378cf25bb76cc3685f71a779f1a3de8cd58ef1
parentc3274763bfc3bf1ececa269ed6e6c4d7ec1c3e5e
intel_pstate: Use LFM bus ratio as min ratio/P state

LFM (max efficiency ratio) is the max frequency at minimum voltage
supported by the processor.  Using LFM as the minimum P state
increases performmance without affecting power. By not using P states
below LFM we avoid using P states that are less power efficient.

Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Cc: 3.13+ <stable@vger.kernel.org> # 3.13+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/cpufreq/intel_pstate.c