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From:   Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
To:     lenb@kernel.org, rjw@rjwysocki.net, mgorman@techsingularity.net
Cc:     peterz@infradead.org, linux-pm@vger.kernel.org,
        linux-kernel@vger.kernel.org, juri.lelli@redhat.com,
        viresh.kumar@linaro.org, ggherdovich@suse.cz,
        Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Subject: [PATCH 4/4] cpufreq: intel_pstate: enable boost for Skylake Xeon
Date:   Tue,  5 Jun 2018 14:42:42 -0700
Message-Id: <20180605214242.62156-5-srinivas.pandruvada@linux.intel.com>
In-Reply-To: <20180605214242.62156-1-srinivas.pandruvada@linux.intel.com>
References: <20180605214242.62156-1-srinivas.pandruvada@linux.intel.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

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>
---
 drivers/cpufreq/intel_pstate.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 70bf63bb4e0e..01c8da1f99db 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[] __initconst = {
+	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);
-- 
2.13.6