CONFIG_WQ_CPU_INTENSIVE_REPORT: Report per-cpu work items which hog CPU for too long

General informations

The Linux kernel configuration item CONFIG_WQ_CPU_INTENSIVE_REPORT:

• prompt: Report per-cpu work items which hog CPU for too long
• type: bool
• depends on: CONFIG_DEBUG_KERNEL
• defined in lib/Kconfig.debug
• found in Linux kernels: 6.5–6.8, 6.9-rc+HEAD

Help text

Say Y here to enable reporting of concurrency-managed per-cpu work items that hog CPUs for longer than workqueue.cpu_intensive_thresh_us. Workqueue automatically detects and excludes them from concurrency management to prevent them from stalling other per-cpu work items. Occassional triggering may not necessarily indicate a problem. Repeated triggering likely indicates that the work item should be switched to use an unbound workqueue.

Hardware

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The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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