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From: Meng Li <li.meng@amd.com>
To: "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
	Borislav Petkov <bpetkov@amd.com>, Huang Rui <ray.huang@amd.com>
Cc: <linux-pm@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<x86@kernel.org>, <linux-acpi@vger.kernel.org>,
	Shuah Khan <skhan@linuxfoundation.org>,
	<linux-kselftest@vger.kernel.org>,
	"Nathan Fontenot" <nathan.fontenot@amd.com>,
	Deepak Sharma <deepak.sharma@amd.com>,
	Alex Deucher <alexander.deucher@amd.com>,
	Mario Limonciello <mario.limonciello@amd.com>,
	Shimmer Huang <shimmer.huang@amd.com>,
	"Perry Yuan" <Perry.Yuan@amd.com>,
	Xiaojian Du <Xiaojian.Du@amd.com>,
	Viresh Kumar <viresh.kumar@linaro.org>,
	Borislav Petkov <bp@alien8.de>,
	"Oleksandr Natalenko" <oleksandr@natalenko.name>,
	Meng Li <li.meng@amd.com>, Wyes Karny <wyes.karny@amd.com>,
	Perry Yuan <perry.yuan@amd.com>
Subject: [PATCH V14 7/7] Documentation: introduce amd-pstate preferrd core mode kernel command line options
Date: Fri, 19 Jan 2024 17:05:02 +0800	[thread overview]
Message-ID: <20240119090502.3869695-8-li.meng@amd.com> (raw)
In-Reply-To: <20240119090502.3869695-1-li.meng@amd.com>

amd-pstate driver support enable/disable preferred core.
Default enabled on platforms supporting amd-pstate preferred core.
Disable amd-pstate preferred core with
"amd_prefcore=disable" added to the kernel command line.

Signed-off-by: Meng Li <li.meng@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Wyes Karny <wyes.karny@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Perry Yuan <perry.yuan@amd.com>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
---
 Documentation/admin-guide/kernel-parameters.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index e0891ac76ab3..88b29efc474f 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -363,6 +363,11 @@
 			  selects a performance level in this range and appropriate
 			  to the current workload.
 
+	amd_prefcore=
+			[X86]
+			disable
+			  Disable amd-pstate preferred core.
+
 	amijoy.map=	[HW,JOY] Amiga joystick support
 			Map of devices attached to JOY0DAT and JOY1DAT
 			Format: <a>,<b>
-- 
2.34.1


  parent reply	other threads:[~2024-01-19  9:06 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-01-19  9:04 [PATCH V14 0/7] amd-pstate preferred core Meng Li
2024-01-19  9:04 ` [PATCH V14 1/7] x86: Drop CPU_SUP_INTEL from SCHED_MC_PRIO for the expansion Meng Li
2024-01-19  9:04 ` [PATCH V14 2/7] ACPI: CPPC: Add get the highest performance cppc control Meng Li
2024-01-19  9:04 ` [PATCH V14 3/7] cpufreq: amd-pstate: Enable amd-pstate preferred core supporting Meng Li
2024-01-19  9:04 ` [PATCH V14 4/7] cpufreq: Add a notification message that the highest perf has changed Meng Li
2024-01-19  9:05 ` [PATCH V14 5/7] cpufreq: amd-pstate: Update amd-pstate preferred core ranking dynamically Meng Li
2024-01-19  9:05 ` [PATCH V14 6/7] Documentation: amd-pstate: introduce amd-pstate preferred core Meng Li
2024-01-19  9:05 ` Meng Li [this message]
2024-01-29 15:18 ` [PATCH V14 0/7] " Rafael J. Wysocki
2024-01-29 15:33   ` Borislav Petkov
2024-01-31 13:58     ` Rafael J. Wysocki
2024-02-18 16:10       ` Lucas Lee Jing Yi
2024-02-18 16:10         ` [PATCH] [PATCH] amd_pstate: fix erroneous highest_perf value on some CPUs Lucas Lee Jing Yi
2024-02-20  7:23           ` Meng, Li (Jassmine)
2024-02-20  9:02           ` Oleksandr Natalenko
2024-02-21 17:19             ` Lucas Lee Jing Yi
2024-02-21 17:19               ` Lucas Lee Jing Yi
2024-02-21 18:47                 ` Mario Limonciello
2024-02-19  1:02         ` [PATCH V14 0/7] amd-pstate preferred core Meng, Li (Jassmine)

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