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

General informations

The Linux kernel configuration item CONFIG_GUSA_RB:

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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.



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