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mm, page_ext: periodically reschedule during page_ext_init()

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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>
This commit is contained in:
Vlastimil Babka 2017-09-06 16:20:48 -07:00 committed by Linus Torvalds
parent dab4ead1a9
commit 0fc542b7dd
1 changed files with 1 additions and 0 deletions
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mm/page_ext.c
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@ -406,6 +406,7 @@ void __init page_ext_init(void)
continue; continue;
if (init_section_page_ext(pfn, nid)) if (init_section_page_ext(pfn, nid))
goto oom; goto oom;
cond_resched();
} }
} }
hotplug_memory_notifier(page_ext_callback, 0); hotplug_memory_notifier(page_ext_callback, 0);