CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE: Online the newly added memory blocks by default

General informations

The Linux kernel configuration item CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE:

• prompt: Online the newly added memory blocks by default
• type: bool
• depends on: CONFIG_MEMORY_HOTPLUG
• defined in mm/Kconfig
• found in Linux kernels: 4.7–4.20, 5.0–5.19, 6.0–6.11

Help text

This option sets the default policy setting for memory hotplug onlining policy (/sys/devices/system/memory/auto_online_blocks) which determines what happens to newly added memory regions. Policy setting can always be changed at runtime. See Documentation/admin-guide/mm/memory-hotplug.rst for more information.

Say Y here if you want all hot-plugged memory blocks to appear in 'online' state by default. Say N here if you want the default policy to keep all hot-plugged memory blocks in 'offline' state.

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The data is retrived from:

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• Linux Kernel Driver DataBase (LKDDb)

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