CONFIG_GUSA_RB: Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)

General informations

The Linux kernel configuration item CONFIG_GUSA_RB:

• prompt: Implement atomic operations by roll-back (gRB) (EXPERIMENTAL)
• type: bool
• depends on: CONFIG_GUSA && CONFIG_CPU_SH3 || ( CONFIG_CPU_SH4 && ! CONFIG_CPU_SH4A )
• defined in arch/sh/Kconfig
• found in Linux kernels: 2.6.25–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.13

Help text

Enabling this option will allow the kernel to implement some atomic operations using a software implementation of load-locked/ store-conditional (LLSC). On machines which do not have hardware LLSC, this should be more efficient than the other alternative of disabling interrupts around the atomic sequence.

Hardware

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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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