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-rw-r--r--mm/Kconfig10
1 files changed, 9 insertions, 1 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index 8459167b0294..d16ba9249bc5 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -739,10 +739,18 @@ config DEFERRED_STRUCT_PAGE_INIT
lifetime of the system until these kthreads finish the
initialisation.
+config PAGE_IDLE_FLAG
+ bool
+ select PAGE_EXTENSION if !64BIT
+ help
+ This adds PG_idle and PG_young flags to 'struct page'. PTE Accessed
+ bit writers can set the state of the bit in the flags so that PTE
+ Accessed bit readers may avoid disturbance.
+
config IDLE_PAGE_TRACKING
bool "Enable idle page tracking"
depends on SYSFS && MMU
- select PAGE_EXTENSION if !64BIT
+ select PAGE_IDLE_FLAG
help
This feature allows to estimate the amount of user pages that have
not been touched during a given period of time. This information can