Commit 0fc542b7 authored Sep 06, 2017 by Vlastimil Babka Committed by Linus Torvalds Sep 06, 2017

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@suse.cz


Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Yang Shi <yang.shi@linaro.org>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Vinayak Menon <vinmenon@codeaurora.org>
Cc: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent dab4ead1

mm/page_ext.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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);