[PATCH] mm/damon/Kconfig: Hide PAGE_IDLE_FLAG from users

[PATCH] mm/damon/Kconfig: Hide PAGE_IDLE_FLAG from users

[SeongJae Park]

From: SeongJae Park <sjpark@amazon.de>

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

Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: SeongJae Park <sjpark@amazon.de>
---
 mm/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/Kconfig b/mm/Kconfig
index 8d3a005edea5..be726f61ef9b 100644
--- 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
-- 
2.17.1

Re: [PATCH] mm/damon/Kconfig: Hide PAGE_IDLE_FLAG from users

[Valdis Klētnieks]

On Fri, 13 Aug 2021 08:12:38 -0000, SeongJae Park said:
> From: SeongJae Park <sjpark@amazon.de>
>
> 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
>
> Suggested-by: Andrew Morton <akpm@linux-foundation.org>
> Signed-off-by: SeongJae Park <sjpark@amazon.de>

Acked-By: Valdis Kletnieks <valdis.kletnieks@vt.edu>