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>

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 70bf63b..352d5b2 100644 (file)
--- 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);