Enable refcount backtrace history in the DP MST helpers
configname: CONFIG_DRM_DEBUG_DP_MST_TOPOLOGY_REFS
Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Enable refcount backtrace history in the DP MST helpers
In linux kernel since version 5.1 (release Date: 2019-05-05)
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".
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".
depends
CONFIG_DEBUG_KERNELCONFIG_DRM_KMS_HELPER
CONFIG_EXPERT
CONFIG_HAS_IOMEM
CONFIG_STACKTRACE_SUPPORT