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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Feb 2024 12:13:28.1411 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 1eaca03a-3ce4-474a-d2ba-08dc257ab1f8 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: MN1PEPF0000ECD8.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB8131 From: Perry Yuan Introduce AMD CPU frequency boosting control sysfs entry which used for switching boost on and boost off. If core performance boost is disabled while a core is in a boosted P-state, the core automatically transitions to the highest performance non-boosted P-state The highest perf and frequency will be limited by the setting value. Signed-off-by: Perry Yuan --- Documentation/admin-guide/pm/amd-pstate.rst | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/admin-guide/pm/amd-pstate.rst b/Documentation/admin-guide/pm/amd-pstate.rst index 1cf40f69278c..abea29ba3d54 100644 --- a/Documentation/admin-guide/pm/amd-pstate.rst +++ b/Documentation/admin-guide/pm/amd-pstate.rst @@ -385,6 +385,17 @@ control its functionality at the system level. They are located in the to the operation mode represented by that string - or to be unregistered in the "disable" case. +``cpb_boost`` + Specifies whether core performance boost is requested to be enabled or disabled + If core performance boost is disabled while a core is in a boosted P-state, the + core automatically transitions to the highest performance non-boosted P-state. + AMD Core Performance Boost(CPB) is controlled by this new attribute file which + allow user to change all cores frequency boosting state. It supports both + ``active``, ``passive`` and ``guided`` mode control with below value write to it. + + "0" Disable Core performance Boosting + "1" Enable Core performance Boosting + ``cpupower`` tool support for ``amd-pstate`` =============================================== -- 2.34.1