CONFIG_LOCK_STAT: Lock usage statistics

General informations

The Linux kernel configuration item CONFIG_LOCK_STAT:

• prompt: Lock usage statistics
• type: bool
• depends on: CONFIG_DEBUG_KERNEL && CONFIG_LOCK_DEBUGGING_SUPPORT
• defined in lib/Kconfig.debug
• found in Linux kernels: 2.6.23–2.6.39, 3.0–3.19, 4.0–4.20, 5.0–5.19, 6.0–6.8, 6.9-rc+HEAD

Help text

This feature enables tracking lock contention points

For more details, see Documentation/locking/lockstat.rst

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

LKDDb

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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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