From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Date: Tue, 5 Jun 2018 14:42:42 -0700
Subject: cpufreq: intel_pstate: enable boost for Skylake Xeon
Patch-mainline: v4.18-rc1
Git-commit: 41ab43c9c89e06ff08a4750d1b09e227ea97894f
References: bsc#1066110
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>
Acked-by: Giovanni Gherdovich <ggherdovich@suse.cz>
---
drivers/cpufreq/intel_pstate.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -2066,6 +2066,12 @@ static const struct x86_cpu_id intel_pst
static bool pid_in_use(void);
+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;
@@ -2096,6 +2102,10 @@ static int intel_pstate_init_cpu(unsigne
intel_pstate_disable_ee(cpunum);
intel_pstate_hwp_enable(cpu);
+
+ id = x86_match_cpu(intel_pstate_hwp_boost_ids);
+ if (id)
+ hwp_boost = true;
} else if (pid_in_use()) {
intel_pstate_pid_reset(cpu);
}