From mboxrd@z Thu Jan 1 00:00:00 1970 From: dirk.brandewie@gmail.com Subject: [PATCH 4/5] intel_pstate: Use LFM bus ratio as min ratio/P state Date: Wed, 12 Feb 2014 10:01:06 -0800 Message-ID: <1392228067-14817-5-git-send-email-dirk.j.brandewie@intel.com> References: <1392228067-14817-1-git-send-email-dirk.j.brandewie@intel.com> Return-path: In-Reply-To: <1392228067-14817-1-git-send-email-dirk.j.brandewie@intel.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-pm@vger.kernel.org, rjw@rjwysocki.net Cc: linux-kernel@vger.kernel.org, Dirk Brandewie List-Id: linux-pm@vger.kernel.org From: Dirk Brandewie Using LFM ratio provides better perf/watt vs min ratio. Signed-off-by: Dirk Brandewie --- drivers/cpufreq/intel_pstate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index b80c03d..ff45ce1 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -356,7 +356,7 @@ static int byt_get_min_pstate(void) { u64 value; rdmsrl(BYT_RATIOS, value); - return value & 0xFF; + return (value >> 8) & 0xFF; } static int byt_get_max_pstate(void) -- 1.8.3.1