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CONFIG_MEMBARRIER: Enable membarrier() system call

General informations

The Linux kernel configuration item CONFIG_MEMBARRIER:

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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