diff options
Diffstat (limited to 'mm/Kconfig.debug')
| -rw-r--r-- | mm/Kconfig.debug | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug index 5c50b238b770..22f4cd96acb0 100644 --- a/mm/Kconfig.debug +++ b/mm/Kconfig.debug @@ -79,3 +79,16 @@ config PAGE_POISONING_ZERO Enabling page poisoning with this option will disable hibernation If unsure, say N + bool + +config DEBUG_PAGE_REF + bool "Enable tracepoint to track down page reference manipulation" + depends on DEBUG_KERNEL + depends on TRACEPOINTS + ---help--- + 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. |