From: Huang Rui <ray.huang@amd.com>
To: "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
Viresh Kumar <viresh.kumar@linaro.org>,
Shuah Khan <skhan@linuxfoundation.org>,
"Borislav Petkov" <bp@suse.de>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>,
Giovanni Gherdovich <ggherdovich@suse.cz>,
<linux-pm@vger.kernel.org>
Cc: Deepak Sharma <deepak.sharma@amd.com>,
Alex Deucher <alexander.deucher@amd.com>,
Mario Limonciello <mario.limonciello@amd.com>,
Steven Noonan <steven@valvesoftware.com>,
Nathan Fontenot <nathan.fontenot@amd.com>,
Jinzhou Su <Jinzhou.Su@amd.com>,
Xiaojian Du <Xiaojian.Du@amd.com>, <linux-kernel@vger.kernel.org>,
<x86@kernel.org>, Huang Rui <ray.huang@amd.com>
Subject: [PATCH v5 12/22] cpufreq: amd: add amd-pstate performance attributes
Date: Tue, 30 Nov 2021 20:36:31 +0800 [thread overview]
Message-ID: <20211130123641.1449041-13-ray.huang@amd.com> (raw)
In-Reply-To: <20211130123641.1449041-1-ray.huang@amd.com>
Introduce sysfs attributes to get the different level amd-pstate
performances.
Signed-off-by: Huang Rui <ray.huang@amd.com>
---
drivers/cpufreq/amd-pstate.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index d462d5a28e08..c70274ae4046 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -513,12 +513,29 @@ static ssize_t show_amd_pstate_lowest_nonlinear_freq(struct cpufreq_policy *poli
return sprintf(&buf[0], "%u\n", freq);
}
+/* In some of ASICs, the highest_perf is not the one in the _CPC table, so we
+ * need to expose it to sysfs.
+ */
+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);
+}
+
cpufreq_freq_attr_ro(amd_pstate_max_freq);
cpufreq_freq_attr_ro(amd_pstate_lowest_nonlinear_freq);
+cpufreq_freq_attr_ro(amd_pstate_highest_perf);
+
static struct freq_attr *amd_pstate_attr[] = {
&amd_pstate_max_freq,
&amd_pstate_lowest_nonlinear_freq,
+ &amd_pstate_highest_perf,
NULL,
};
--
2.25.1
next prev parent reply other threads:[~2021-11-30 12:38 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-30 12:36 [PATCH v5 00/22] cpufreq: introduce a new AMD CPU frequency control mechanism Huang Rui
2021-11-30 12:36 ` [PATCH v5 01/22] x86/cpufeatures: add AMD Collaborative Processor Performance Control feature flag Huang Rui
2021-11-30 12:36 ` [PATCH v5 02/22] x86/msr: add AMD CPPC MSR definitions Huang Rui
2021-12-16 17:23 ` Rafael J. Wysocki
2021-12-17 3:09 ` Huang Rui
2021-11-30 12:36 ` [PATCH v5 03/22] ACPI: CPPC: implement support for SystemIO registers Huang Rui
2021-12-16 17:40 ` Rafael J. Wysocki
2021-12-17 4:30 ` Huang Rui
2021-11-30 12:36 ` [PATCH v5 04/22] ACPI: CPPC: Check present CPUs for determining _CPC is valid Huang Rui
2021-11-30 12:36 ` [PATCH v5 05/22] ACPI: CPPC: add cppc enable register function Huang Rui
2021-11-30 12:36 ` [PATCH v5 06/22] cpufreq: amd: introduce a new amd pstate driver to support future processors Huang Rui
2021-12-16 17:59 ` Rafael J. Wysocki
2021-12-17 7:34 ` Huang Rui
2021-12-17 14:03 ` Rafael J. Wysocki
2021-11-30 12:36 ` [PATCH v5 07/22] cpufreq: amd: add fast switch function for amd-pstate Huang Rui
2021-11-30 12:36 ` [PATCH v5 08/22] cpufreq: amd: introduce the support for the processors with shared memory solution Huang Rui
2021-12-16 18:04 ` Rafael J. Wysocki
2021-12-17 7:37 ` Huang Rui
2021-11-30 12:36 ` [PATCH v5 09/22] cpufreq: amd: add trace for amd-pstate module Huang Rui
2021-12-16 18:12 ` Rafael J. Wysocki
2021-12-17 7:52 ` Huang Rui
2021-12-17 14:05 ` Rafael J. Wysocki
2021-11-30 12:36 ` [PATCH v5 10/22] cpufreq: amd: add boost mode support for amd-pstate Huang Rui
2021-11-30 12:36 ` [PATCH v5 11/22] cpufreq: amd: add amd-pstate frequencies attributes Huang Rui
2021-11-30 12:36 ` Huang Rui [this message]
2021-11-30 12:36 ` [PATCH v5 13/22] cpupower: add AMD P-state capability flag Huang Rui
2021-11-30 12:36 ` [PATCH v5 14/22] cpupower: add the function to check amd-pstate enabled Huang Rui
2021-11-30 12:36 ` [PATCH v5 15/22] cpupower: initial AMD P-state capability Huang Rui
2021-11-30 12:36 ` [PATCH v5 16/22] cpupower: add the function to get the sysfs value from specific table Huang Rui
2021-11-30 12:36 ` [PATCH v5 17/22] cpupower: introduce acpi cppc library Huang Rui
2021-11-30 12:36 ` [PATCH v5 18/22] cpupower: add amd-pstate sysfs definition and access helper Huang Rui
2021-11-30 12:36 ` [PATCH v5 19/22] cpupower: enable boost state support for amd-pstate module Huang Rui
2021-11-30 12:36 ` [PATCH v5 20/22] cpupower: move print_speed function into misc helper Huang Rui
2021-11-30 12:36 ` [PATCH v5 21/22] cpupower: print amd-pstate information on cpupower Huang Rui
2021-11-30 12:36 ` [PATCH v5 22/22] Documentation: amd-pstate: add amd-pstate driver introduction Huang Rui
2021-12-16 18:20 ` [PATCH v5 00/22] cpufreq: introduce a new AMD CPU frequency control mechanism Rafael J. Wysocki
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