CONFIG_ARM64_USE_LSE_ATOMICS: Atomic instructions

General informations

The Linux kernel configuration item CONFIG_ARM64_USE_LSE_ATOMICS:

• prompt: Atomic instructions
• type: bool
• depends on: (none)
• defined in arch/arm64/Kconfig
• found in Linux kernels: 5.6–5.19, 6.0–6.12, 6.13-rc+HEAD

Help text

As part of the Large System Extensions, ARMv8.1 introduces new atomic instructions that are designed specifically to scale in very large systems.

Say Y here to make use of these instructions for the in-kernel atomic routines. This incurs a small overhead on CPUs that do not support these instructions and requires the kernel to be built with binutils >= 2.25 in order for the new instructions to be used.

Hardware

LKDDb

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• (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)

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