linux-kernel - [PATCH v3 12/21] cpufreq: amd: add amd-pstate performance attributes

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Message-ID: <20211029130241.1984459-13-ray.huang@amd.com>
Date:   Fri, 29 Oct 2021 21:02:32 +0800
From:   Huang Rui <ray.huang@....com>
To:     "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Shuah Khan <skhan@...uxfoundation.org>,
        "Borislav Petkov" <bp@...e.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        Giovanni Gherdovich <ggherdovich@...e.cz>,
        <linux-pm@...r.kernel.org>
CC:     Deepak Sharma <deepak.sharma@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Mario Limonciello <mario.limonciello@....com>,
        Steven Noonan <steven@...vesoftware.com>,
        Nathan Fontenot <nathan.fontenot@....com>,
        Jinzhou Su <Jinzhou.Su@....com>,
        Xiaojian Du <Xiaojian.Du@....com>,
        <linux-kernel@...r.kernel.org>, <x86@...nel.org>,
        Huang Rui <ray.huang@....com>
Subject: [PATCH v3 12/21] cpufreq: amd: add amd-pstate performance attributes

Introduce sysfs attributes to get the different level amd-pstate
performances.

Signed-off-by: Huang Rui <ray.huang@....com>
---
 drivers/cpufreq/amd-pstate.c | 53 ++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index 8cf1e80f44e0..58ee50bf492b 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -536,14 +536,67 @@ static ssize_t show_amd_pstate_lowest_nonlinear_freq(struct cpufreq_policy *poli
 	return sprintf(&buf[0], "%u\n", freq);
 }
 
+static ssize_t show_amd_pstate_highest_perf(struct cpufreq_policy *policy,
+					    char *buf)
+{
+	u32 perf;
+	struct amd_cpudata *cpudata = policy->driver_data;
+
+	perf = READ_ONCE(cpudata->highest_perf);
+
+	return sprintf(&buf[0], "%u\n", perf);
+}
+
+static ssize_t show_amd_pstate_nominal_perf(struct cpufreq_policy *policy,
+					    char *buf)
+{
+	u32 perf;
+	struct amd_cpudata *cpudata = policy->driver_data;
+
+	perf = READ_ONCE(cpudata->nominal_perf);
+
+	return sprintf(&buf[0], "%u\n", perf);
+}
+
+static ssize_t show_amd_pstate_lowest_nonlinear_perf(struct cpufreq_policy *policy,
+						     char *buf)
+{
+	u32 perf;
+	struct amd_cpudata *cpudata = policy->driver_data;
+
+	perf = READ_ONCE(cpudata->lowest_nonlinear_perf);
+
+	return sprintf(&buf[0], "%u\n", perf);
+}
+
+static ssize_t show_amd_pstate_lowest_perf(struct cpufreq_policy *policy,
+					   char *buf)
+{
+	u32 perf;
+	struct amd_cpudata *cpudata = policy->driver_data;
+
+	perf = READ_ONCE(cpudata->lowest_perf);
+
+	return sprintf(&buf[0], "%u\n", perf);
+}
+
 cpufreq_freq_attr_ro(amd_pstate_max_freq);
 cpufreq_freq_attr_ro(amd_pstate_nominal_freq);
 cpufreq_freq_attr_ro(amd_pstate_lowest_nonlinear_freq);
 
+cpufreq_freq_attr_ro(amd_pstate_highest_perf);
+cpufreq_freq_attr_ro(amd_pstate_nominal_perf);
+cpufreq_freq_attr_ro(amd_pstate_lowest_nonlinear_perf);
+cpufreq_freq_attr_ro(amd_pstate_lowest_perf);
+
 static struct freq_attr *amd_pstate_attr[] = {
 	&amd_pstate_max_freq,
 	&amd_pstate_nominal_freq,
 	&amd_pstate_lowest_nonlinear_freq,
+	&amd_pstate_highest_perf,
+	&amd_pstate_nominal_perf,
+	&amd_pstate_lowest_nonlinear_perf,
+	&amd_pstate_lowest_perf,
 	NULL,
 };
 
-- 
2.25.1