From: Qian Cai <quic_qiancai@quicinc.com>
To: Zi Yan <ziy@nvidia.com>
Cc: David Hildenbrand <david@redhat.com>, <linux-mm@kvack.org>,
<linux-kernel@vger.kernel.org>,
<virtualization@lists.linux-foundation.org>,
Vlastimil Babka <vbabka@suse.cz>,
Mel Gorman <mgorman@techsingularity.net>,
Eric Ren <renzhengeek@gmail.com>, Mike Rapoport <rppt@kernel.org>,
"Oscar Salvador" <osalvador@suse.de>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH v11 0/6] Use pageblock_order for cma and alloc_contig_range alignment.
Date: Thu, 19 May 2022 16:57:55 -0400 [thread overview]
Message-ID: <YoavU/+NfQIzQiDF@qian> (raw)
In-Reply-To: <0E75B247-8150-48A3-83AE-56C586030006@nvidia.com>
On Thu, Apr 28, 2022 at 08:39:06AM -0400, Zi Yan wrote:
> How about the one attached? I can apply it to next-20220428. Let me know
> if you are using a different branch. Thanks.
Zi, it turns out that the endless loop in isolate_single_pageblock() can
still be reproduced on today's linux-next tree by running the reproducer a
few times. With this debug patch applied, it keeps printing the same
values.
--- a/mm/page_isolation.c
+++ b/mm/page_isolation.c
@@ -399,6 +399,8 @@ static int isolate_single_pageblock(unsigned long boundary_pfn, gfp_t gfp_flags,
};
INIT_LIST_HEAD(&cc.migratepages);
+ printk_ratelimited("KK stucked pfn=%lu head_pfn=%lu nr_pages=%lu boundary_pfn=%lu\n", pfn, head_pfn, nr_pages, boundary_pfn);
ret = __alloc_contig_migrate_range(&cc, head_pfn,
head_pfn + nr_pages);
isolate_single_pageblock: 179 callbacks suppressed
KK stucked pfn=2151120384 head_pfn=2151120384 nr_pages=512 boundary_pfn=2151120896
KK stucked pfn=2151120384 head_pfn=2151120384 nr_pages=512 boundary_pfn=2151120896
KK stucked pfn=2151120384 head_pfn=2151120384 nr_pages=512 boundary_pfn=2151120896
KK stucked pfn=2151120384 head_pfn=2151120384 nr_pages=512 boundary_pfn=2151120896
KK stucked pfn=2151120384 head_pfn=2151120384 nr_pages=512 boundary_pfn=2151120896
KK stucked pfn=2151120384 head_pfn=2151120384 nr_pages=512 boundary_pfn=2151120896
KK stucked pfn=2151120384 head_pfn=2151120384 nr_pages=512 boundary_pfn=2151120896
KK stucked pfn=2151120384 head_pfn=2151120384 nr_pages=512 boundary_pfn=2151120896
KK stucked pfn=2151120384 head_pfn=2151120384 nr_pages=512 boundary_pfn=2151120896
KK stucked pfn=2151120384 head_pfn=2151120384 nr_pages=512 boundary_pfn=2151120896
next prev parent reply other threads:[~2022-05-19 20:58 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-25 14:31 [PATCH v11 0/6] Use pageblock_order for cma and alloc_contig_range alignment Zi Yan
2022-04-25 14:31 ` [PATCH v11 1/6] mm: page_isolation: move has_unmovable_pages() to mm/page_isolation.c Zi Yan
2022-04-25 14:31 ` [PATCH v11 2/6] mm: page_isolation: check specified range for unmovable pages Zi Yan
2022-04-25 14:31 ` [PATCH v11 3/6] mm: make alloc_contig_range work at pageblock granularity Zi Yan
2022-04-29 13:54 ` Zi Yan
2022-05-24 19:00 ` Zi Yan
2022-05-25 17:41 ` Doug Berger
2022-05-25 17:53 ` Zi Yan
2022-05-25 21:03 ` Doug Berger
2022-05-25 21:11 ` Zi Yan
2022-05-26 17:34 ` Zi Yan
2022-05-26 19:46 ` Doug Berger
2022-04-25 14:31 ` [PATCH v11 4/6] mm: page_isolation: enable arbitrary range page isolation Zi Yan
2022-05-24 19:02 ` Zi Yan
2022-04-25 14:31 ` [PATCH v11 5/6] mm: cma: use pageblock_order as the single alignment Zi Yan
2022-04-25 14:31 ` [PATCH v11 6/6] drivers: virtio_mem: use pageblock size as the minimum virtio_mem size Zi Yan
2022-04-26 20:18 ` [PATCH v11 0/6] Use pageblock_order for cma and alloc_contig_range alignment Qian Cai
2022-04-26 20:26 ` Zi Yan
2022-04-26 21:08 ` Qian Cai
2022-04-26 21:38 ` Zi Yan
2022-04-27 12:41 ` Qian Cai
2022-04-27 13:10 ` Qian Cai
2022-04-27 13:27 ` Qian Cai
2022-04-27 13:30 ` Zi Yan
2022-04-27 21:04 ` Zi Yan
2022-04-28 12:33 ` Qian Cai
2022-04-28 12:39 ` Zi Yan
2022-04-28 16:19 ` Qian Cai
2022-04-29 13:38 ` Zi Yan
2022-05-19 20:57 ` Qian Cai [this message]
2022-05-19 21:35 ` Zi Yan
2022-05-19 23:24 ` Zi Yan
2022-05-20 11:30 ` Qian Cai
2022-05-20 13:43 ` Zi Yan
2022-05-20 14:13 ` Zi Yan
2022-05-20 19:41 ` Qian Cai
2022-05-20 21:56 ` Zi Yan
2022-05-20 23:41 ` Qian Cai
2022-05-22 16:54 ` Zi Yan
2022-05-22 19:33 ` Zi Yan
2022-05-24 16:59 ` Qian Cai
2022-05-10 1:03 ` Andrew Morton
2022-05-10 1:07 ` Zi Yan
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