Enable tracepoint to track down page reference manipulation
modulename: debug_page_ref.ko
configname: CONFIG_DEBUG_PAGE_REF
Linux Kernel Configuration
└─>Kernel hacking
└─>Memory Debugging
└─>Enable tracepoint to track down page reference manipulation
In linux kernel since version 4.1 (release Date: 2015-06-21)
This is a feature to add tracepoint for tracking down page reference
manipulation. This tracking is useful to diagnose functional failure
due to migration failures caused by page reference mismatches. Be
careful when enabling this feature because it adds about 30 KB to the
kernel code. However the runtime performance overhead is virtually
nil until the tracepoints are actually enabled.
manipulation. This tracking is useful to diagnose functional failure
due to migration failures caused by page reference mismatches. Be
careful when enabling this feature because it adds about 30 KB to the
kernel code. However the runtime performance overhead is virtually
nil until the tracepoints are actually enabled.