CONFIG_ARM64_MPAM: Enable support for MPAM

General informations

The Linux kernel configuration item CONFIG_ARM64_MPAM:

• prompt: Enable support for MPAM
• type: bool
• depends on: (none)
• defined in arch/arm64/Kconfig
• found in Linux kernels: 6.19-rc+HEAD

Help text

Memory System Resource Partitioning and Monitoring (MPAM) is an optional extension to the Arm architecture that allows each transaction issued to the memory system to be labelled with a Partition identifier (PARTID) and Performance Monitoring Group identifier (PMG).

Memory system components, such as the caches, can be configured with policies to control how much of various physical resources (such as memory bandwidth or cache memory) the transactions labelled with each PARTID can consume. Depending on the capabilities of the hardware, the PARTID and PMG can also be used as filtering criteria to measure the memory system resource consumption of different parts of a workload.

Use of this extension requires CPU support, support in the Memory System Components (MSC), and a description from firmware of where the MSCs are in the address space.

MPAM is exposed to user-space via the resctrl pseudo filesystem.

Hardware

LKDDb

Raw data from LKDDb:

• (none)

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

Automatic links from Google (and ads)

Custom Search

Popular queries: