mm/damon/Kconfig: Hide PAGE_IDLE_FLAG from users

Commit 2a058a1a9914 ("mm/idle_page_tracking: make PG_idle reusable") of
linux-mm[1] makes CONFIG_PAGE_IDLE_FLAG option to be presented to the
user.  However, the option is hard to be understood by users.  Also, it is
not intended to be set by users but other kernel subsystems like DAMON or
IDLE_PAGE_TRACKING.  To avoid confusions, this commit removes the prompt
so that the option is not presented to the user.

[1] https://github.com/hnaz/linux-mm/commit/2a058a1a9914

Link: https://lkml.kernel.org/r/20210813081238.34705-1-sj38.park@gmail.com
Signed-off-by: SeongJae Park <sjpark@amazon.de>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

diff --git a/mm/Kconfig b/mm/Kconfig
index 8d3a005edea5d0b3578576fcf06f1a7db180798d..be726f61ef9bca0ed76d69600948f4fccfa86339 100644 (file)
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -740,7 +740,7 @@ config DEFERRED_STRUCT_PAGE_INIT
          initialisation.
 
 config PAGE_IDLE_FLAG
-       bool "Add PG_idle and PG_young flags"
+       bool
        select PAGE_EXTENSION if !64BIT
        help
          This adds PG_idle and PG_young flags to 'struct page'.  PTE Accessed