Enable backtrace history for lock contention
configname: CONFIG_DRM_DEBUG_MODESET_LOCK
Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>Enable backtrace history for lock contention
In linux kernel since version 4.14.326 (release Date: 2023-09-23)
Enable debug tracing of failures to gracefully handle drm modeset lock
contention. A history of each drm modeset lock path hitting -EDEADLK
will be saved until gracefully handled, and the backtrace will be
printed when attempting to lock a contended lock.
If in doubt, say "N".
contention. A history of each drm modeset lock path hitting -EDEADLK
will be saved until gracefully handled, and the backtrace will be
printed when attempting to lock a contended lock.
If in doubt, say "N".