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CONFIG_PER_VMA_LOCK_STATS: Statistics for per-vma locks

General informations

The Linux kernel configuration item CONFIG_PER_VMA_LOCK_STATS:

Help text

Say Y here to enable success, retry and failure counters of page faults handled under protection of per-vma locks. When enabled, the counters are exposed in /proc/vmstat. This information is useful for kernel developers to evaluate effectiveness of per-vma locks and to identify pathological cases. Counting these events introduces a small overhead in the page fault path.

If in doubt, say N.



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