CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON: HugeTLB Vmemmap Optimization (HVO) defaults to on

General informations

The Linux kernel configuration item CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON has multiple definitions:

HugeTLB Vmemmap Optimization (HVO) defaults to on found in fs/Kconfig

The configuration item CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON:

• prompt: HugeTLB Vmemmap Optimization (HVO) defaults to on
• type: bool
• depends on: CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP
• defined in fs/Kconfig
• found in Linux kernels: 6.0–6.8, 6.9-rc+HEAD

Help text

The HugeTLB Vmemmap Optimization (HVO) defaults to off. Say Y here to enable HVO by default. It can be disabled via hugetlb_free_vmemmap=off (boot command line) or hugetlb_optimize_vmemmap (sysctl).

Default optimizing vmemmap pages of HugeTLB to on found in fs/Kconfig

The configuration item CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON:

• prompt: Default optimizing vmemmap pages of HugeTLB to on
• type: bool
• depends on: CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP
• defined in fs/Kconfig
• found in Linux kernels: 5.19, 5.19+HEAD

Help text

When using HUGETLB_PAGE_OPTIMIZE_VMEMMAP, the optimizing unused vmemmap pages associated with each HugeTLB page is default off. Say Y here to enable optimizing vmemmap pages of HugeTLB by default. It can then be disabled on the command line via hugetlb_free_vmemmap=off.

Hardware

LKDDb

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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)

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