cpufreq: intel_pstate: enable boost for Skylake Xeon

Enable HWP boost on Skylake server and workstations.

Reported-by: Mel Gorman <mgorman@techsingularity.net>
Tested-by: Giovanni Gherdovich <ggherdovich@suse.cz>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 70bf63bb4e0e..352d5b2d5b58 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -1794,6 +1794,12 @@ static const struct x86_cpu_id intel_pstate_cpu_ee_disable_ids[] = {
         {}
 };
 
+static const struct x86_cpu_id intel_pstate_hwp_boost_ids[] = {
+        ICPU(INTEL_FAM6_SKYLAKE_X, core_funcs),
+        ICPU(INTEL_FAM6_SKYLAKE_DESKTOP, core_funcs),
+        {}
+};
+
 static int intel_pstate_init_cpu(unsigned int cpunum)
 {
         struct cpudata *cpu;
@@ -1824,6 +1830,10 @@ static int intel_pstate_init_cpu(unsigned int cpunum)
                         intel_pstate_disable_ee(cpunum);
 
                 intel_pstate_hwp_enable(cpu);
+
+                id = x86_match_cpu(intel_pstate_hwp_boost_ids);
+                if (id)
+                        hwp_boost = true;
         }
 
         intel_pstate_get_cpu_pstates(cpu);