CONFIG_HIST_TRIGGERS_DEBUG: Hist trigger debug support

General informations

The Linux kernel configuration item CONFIG_HIST_TRIGGERS_DEBUG:

• prompt: Hist trigger debug support
• type: bool
• depends on: CONFIG_HIST_TRIGGERS
• defined in kernel/trace/Kconfig
• found in Linux kernels: 5.8–5.19, 6.0–6.8, 6.9-rc+HEAD

Help text

Add "hist_debug" file for each event, which when read will dump out a bunch of internal details about the hist triggers defined on that event.

The hist_debug file serves a couple of purposes:

- Helps developers verify that nothing is broken.

- Provides educational information to support the details of the hist trigger internals as described by Documentation/trace/histogram-design.rst.

The hist_debug output only covers the data structures related to the histogram definitions themselves and doesn't display the internals of map buckets or variable values of running histograms.

If unsure, say N.

Hardware

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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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