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Commit 1ce22103 authored by Vlastimil Babka's avatar Vlastimil Babka Committed by Linus Torvalds
Browse files

mm/Kconfig: correct description of DEFERRED_STRUCT_PAGE_INIT 



The description mentions kswapd threads, while the deferred struct page
initialization is actually done by one-off "pgdatinitX" threads.

Fix the description so that potentially users are not confused about
pgdatinit threads using CPU after boot instead of kswapd.

Signed-off-by: default avatarVlastimil Babka <vbabka@suse.cz>
Acked-by: default avatarMel Gorman <mgorman@techsingularity.net>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 1f1ffb8a

mm/Kconfig

+5 −4
Original line number Diff line number Diff line
@@ -624,7 +624,7 @@ config ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT 
	bool



config DEFERRED_STRUCT_PAGE_INIT

	bool "Defer initialisation of struct pages to kswapd"

	bool "Defer initialisation of struct pages to kthreads"

	default n

	depends on ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT

	depends on MEMORY_HOTPLUG
@@ -633,9 +633,10 @@ config DEFERRED_STRUCT_PAGE_INIT 
	  single thread. On very large machines this can take a considerable

	  amount of time. If this option is set, large machines will bring up

	  a subset of memmap at boot and then initialise the rest in parallel

	  when kswapd starts. This has a potential performance impact on

	  processes running early in the lifetime of the systemm until kswapd

	  finishes the initialisation.

	  by starting one-off "pgdatinitX" kernel thread for each node X. This

	  has a potential performance impact on processes running early in the

	  lifetime of the system until these kthreads finish the

	  initialisation.



config IDLE_PAGE_TRACKING

	bool "Enable idle page tracking"