CONFIG_CMA_SIZE_PERNUMA: Default CMA area per NUMA node

General informations

The Linux kernel configuration item CONFIG_CMA_SIZE_PERNUMA:

• prompt: Default CMA area per NUMA node
• type: bool
• depends on: CONFIG_DMA_NUMA_CMA
• defined in kernel/dma/Kconfig
• found in Linux kernels: 7.2-rc+HEAD

Help text

On systems with more than one NUMA node, the selected CMA area size will be also allocated on each additional node, so that most devices may have benefit from better DMA locality without an explicit command-line opt-in.

Hardware

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The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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