提交 1ce22103 编写于 作者: V Vlastimil Babka 提交者: Linus Torvalds

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: NVlastimil Babka <vbabka@suse.cz>
Acked-by: NMel Gorman <mgorman@techsingularity.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
上级 1f1ffb8a
......@@ -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"
......
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