The patch titled
Subject: mm, page_ext: periodically reschedule during page_ext_init()
has been added to the -mm tree. Its filename is
mm-page_ext-periodically-reschedule-during-page_ext_init.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-page_ext-periodically-reschedule-during-page_ext_init.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-page_ext-periodically-reschedule-during-page_ext_init.patch
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------------------------------------------------------
From: Vlastimil Babka <vbabka@xxxxxxx>
Subject: mm, page_ext: periodically reschedule during page_ext_init()
page_ext_init() can take long on large machines, so add a cond_resched()
point after each section is processed. This will allow moving the init to
a later point at boot without triggering lockup reports.
Link: http://lkml.kernel.org/r/20170720134029.25268-3-vbabka@xxxxxxx
Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Yang Shi <yang.shi@xxxxxxxxxx>
Cc: Laura Abbott <labbott@xxxxxxxxxx>
Cc: Vinayak Menon <vinmenon@xxxxxxxxxxxxxx>
Cc: zhong jiang <zhongjiang@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_ext.c | 1 +
1 file changed, 1 insertion(+)
diff -puN mm/page_ext.c~mm-page_ext-periodically-reschedule-during-page_ext_init mm/page_ext.c
--- a/mm/page_ext.c~mm-page_ext-periodically-reschedule-during-page_ext_init
+++ a/mm/page_ext.c
@@ -406,6 +406,7 @@ void __init page_ext_init(void)
continue;
if (init_section_page_ext(pfn, nid))
goto oom;
+ cond_resched();
}
}
hotplug_memory_notifier(page_ext_callback, 0);
_
Patches currently in -mm which might be from vbabka@xxxxxxx are
mm-page_owner-make-init_pages_in_zone-faster.patch
mm-page_ext-periodically-reschedule-during-page_ext_init.patch
mm-page_owner-dont-grab-zone-lock-for-init_pages_in_zone.patch
mm-page_ext-move-page_ext_init-after-page_alloc_init_late.patch
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