CONFIG_DRM_DEBUG_DP_MST_TOPOLOGY_REFS: Enable refcount backtrace history in the DP MST helpers

General informations

The Linux kernel configuration item CONFIG_DRM_DEBUG_DP_MST_TOPOLOGY_REFS:

• prompt: Enable refcount backtrace history in the DP MST helpers
• type: bool
• depends on: ( CONFIG_STACKTRACE_SUPPORT ) && ( CONFIG_DRM_KMS_HELPER ) && ( CONFIG_DEBUG_KERNEL ) && ( CONFIG_EXPERT )
• defined in drivers/gpu/drm/Kconfig
• found in Linux kernels: 5.5–5.19, 6.0–6.12, 6.13-rc+HEAD

Help text

Enables debug tracing for topology refs in DRM's DP MST helpers. A history of each topology reference/dereference will be printed to the kernel log once a port or branch device's topology refcount reaches 0.

This has the potential to use a lot of memory and print some very large kernel messages. If in doubt, 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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