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CONFIG_LOCK_STAT: Lock usage statistics

General informations

The Linux kernel configuration item CONFIG_LOCK_STAT:

Help text

This feature enables tracking lock contention points

For more details, see Documentation/lockstat.txt

This also enables lock events required by "perf lock", subcommand of perf. If you want to use "perf lock", you also need to turn on EVENT_TRACING.

LOCK_STAT defines "contended" and "acquired" lock events. (LOCKDEP defines "acquire" and "release" events.)

Hardware

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