CONFIG_MEMBARRIER: Enable membarrier() system call

General informations

The Linux kernel configuration item CONFIG_MEMBARRIER:

• prompt: Enable membarrier() system call
• type: bool
• depends on: CONFIG_EXPERT
• defined in init/Kconfig
• found in Linux kernels: 4.3–4.20, 5.0–5.19, 6.0–6.8, 6.9-rc+HEAD

Help text

Enable the membarrier() system call that allows issuing memory barriers across all running threads, which can be used to distribute the cost of user-space memory barriers asymmetrically by transforming pairs of memory barriers into pairs consisting of membarrier() and a compiler barrier.

If unsure, say Y.

Hardware

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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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