1 files changed, 32 insertions, 0 deletions

diff --git a/patches/boot_time_opt/0122-tweak-perfbias.patch b/patches/boot_time_opt/0122-tweak-perfbias.patch
new file mode 100644
index 0000000..7dc75d6
--- /dev/null
+++ b/patches/boot_time_opt/0122-tweak-perfbias.patch
@@ -0,0 +1,32 @@
+From 5a2cb154e11490e5ba05975c7a537d0bafb12bba Mon Sep 17 00:00:00 2001
+From: Arjan van de Ven <arjan@linux.intel.com>
+Date: Sun, 22 Jan 2017 18:51:13 +0000
+Subject: [PATCH 122/126] tweak perfbias
+
+---
+ arch/x86/kernel/cpu/intel.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
+index b720dacac051..c01bb1632cbf 100644
+--- a/arch/x86/kernel/cpu/intel.c
++++ b/arch/x86/kernel/cpu/intel.c
+@@ -467,12 +467,12 @@ static void init_intel_energy_perf(struct cpuinfo_x86 *c)
+                return;
+ 
+        rdmsrl(MSR_IA32_ENERGY_PERF_BIAS, epb);
+-       if ((epb & 0xF) != ENERGY_PERF_BIAS_PERFORMANCE)
++       if ((epb & 0xF) >= ENERGY_PERF_BIAS_NORMAL)
+                return;
+ 
+-       pr_warn_once("ENERGY_PERF_BIAS: Set to 'normal', was 'performance'\n");
++       pr_warn_once("ENERGY_PERF_BIAS: Set to 'performance', was 'normal'\n");
+        pr_warn_once("ENERGY_PERF_BIAS: View and update with x86_energy_perf_policy(8)\n");
+-       epb = (epb & ~0xF) | ENERGY_PERF_BIAS_NORMAL;
++       epb = (epb & ~0xF) | ENERGY_PERF_BIAS_PERFORMANCE;
+        wrmsrl(MSR_IA32_ENERGY_PERF_BIAS, epb);
+ }
+ 
+-- 
+2.15.0
+