From: Perry Yuan <Perry.Yuan@amd.com>
To: <rafael.j.wysocki@intel.com>, <ray.huang@amd.com>,
<viresh.kumar@linaro.org>
Cc: <Deepak.Sharma@amd.com>, <Mario.Limonciello@amd.com>,
<Nathan.Fontenot@amd.com>, <Alexander.Deucher@amd.com>,
<Jinzhou.Su@amd.com>, <Shimmer.Huang@amd.com>,
<Xiaojian.Du@amd.com>, <Li.Meng@amd.com>,
<linux-pm@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Perry Yuan <Perry.Yuan@amd.com>
Subject: [PATCH 2/7] cpufreq: amd_pstate: add module parameter to load amd pstate EPP driver
Date: Sat, 10 Sep 2022 00:45:29 +0800 [thread overview]
Message-ID: <20220909164534.71864-3-Perry.Yuan@amd.com> (raw)
In-Reply-To: <20220909164534.71864-1-Perry.Yuan@amd.com>
The amd_pstate mode parameter will allow user to select which amd pstate
working mode as booting mode, amd_pstate instance or amd_pstate_epp instance.
1) amd_pstate instance is depending on the target operation mode.
2) amd_pstate_epp instance is depending on the set_policy operation mode.It
is also called active mode that AMD SMU has EPP algorithm to control the
CPU runtime frequency according to the EPP set value and workload.
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
---
drivers/cpufreq/amd-pstate.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index a2463f785322..451295284a26 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -58,6 +58,12 @@ module_param(shared_mem, bool, 0444);
MODULE_PARM_DESC(shared_mem,
"enable amd-pstate on processors with shared memory solution (false = disabled (default), true = enabled)");
+static bool epp_enabled = true;
+module_param(epp_enabled, bool, 0444);
+MODULE_PARM_DESC(epp_enabled,
+ "load amd_pstate or amd_pstate_epp (true = amd_pstate_epp driver instance (default), false = amd_pstate driver instance)");
+
+
static struct cpufreq_driver amd_pstate_driver;
/**
--
2.34.1
next prev parent reply other threads:[~2022-09-09 16:47 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-09 16:45 [PATCH 0/7] Implement AMD Pstate EPP Driver Perry Yuan
2022-09-09 16:45 ` [PATCH 1/7] ACPI: CPPC: Add AMD pstate energy performance preference cppc control Perry Yuan
2022-09-09 16:45 ` Perry Yuan [this message]
2022-09-09 18:49 ` [PATCH 2/7] cpufreq: amd_pstate: add module parameter to load amd pstate EPP driver Limonciello, Mario
2022-09-13 15:14 ` Yuan, Perry
2022-09-25 16:58 ` Yuan, Perry
2022-09-09 16:45 ` [PATCH 3/7] Documentation: amd-pstate: add EPP profiles introduction Perry Yuan
2022-09-09 16:45 ` [PATCH 4/7] cpufreq: amd_pstate: add AMD pstate EPP support for shared memory type processor Perry Yuan
2022-09-09 18:52 ` Limonciello, Mario
2022-09-13 15:20 ` Yuan, Perry
2022-09-25 17:01 ` Yuan, Perry
2022-09-15 16:24 ` Nathan Fontenot
2022-09-25 12:23 ` Yuan, Perry
2022-09-29 14:08 ` Nathan Fontenot
2022-09-09 16:45 ` [PATCH 5/7] cpufreq: amd_pstate: add AMD Pstate EPP support for the MSR based processors Perry Yuan
2022-09-15 18:58 ` Nathan Fontenot
2022-09-25 17:12 ` Yuan, Perry
2022-09-09 16:45 ` [PATCH 6/7] cpufreq: amd_pstate: implement amd pstate cpu online and offline callback Perry Yuan
2022-09-09 19:02 ` Limonciello, Mario
2022-09-15 19:03 ` Nathan Fontenot
2022-09-09 16:45 ` [PATCH 7/7] cpufreq: amd-pstate: implement suspend and resume callbacks Perry Yuan
2022-09-09 19:00 ` Limonciello, Mario
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