From nobody Wed Feb 11 07:07:43 2026 Received: from out30-130.freemail.mail.aliyun.com (out30-130.freemail.mail.aliyun.com [115.124.30.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1B7E85DF0B for ; Wed, 6 Mar 2024 10:13:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.30.130 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709720021; cv=none; b=UkWtT5pxS01sLARJicgRYhwY0r0vBH6V7+cltaFB11AAe1IqX7/z7at4PWofRozlfljbG5iaC/8wHDv4JDuWZH3c4dBy2m/jcguAyxRgWYxLySckkhzvzifGhY2OjgCuerD3AoTiAJo0C2ERdxWyFP9x26I912xPYDEJFmuMSK4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709720021; c=relaxed/simple; bh=0mmw8V+OMLJ53wZ3rKzZ+MMr209UW8xjMgFiOKuz7rw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=InCA8dGrOC7ct/XzkjBfiBa9dJZAZRZeq4un4v8DBLFE+mah3IiUEd13ZdYStTzU5jPpXIukVbam8BVobS96QjwXjuqd+LxaGYyu+lyeJNS20wws6gVo8PNuWlNlX0Un4vNiVBwy/G3MjXtk0PRzJqwPKv/RFDaT/KKe4/asCvA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com; spf=pass smtp.mailfrom=linux.alibaba.com; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b=ovx+ENA2; arc=none smtp.client-ip=115.124.30.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b="ovx+ENA2" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1709720016; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=3+gbi0TkcqE1wrd2gyS4ajAOD2lf+Wm0tnSEhRfeeJg=; b=ovx+ENA2ciAIRF89BS1/APfAwi9WM2FNh7KwQ48SMEyvQ+G3ZGSHutWO03xJQk4KMbcrF49etQ0TfnHCNlOnYBUV/3byTPgkKjxqvtWP82HgHzsGnoFBzh/UEjPSCsHtLx8R+04SgeYbv4tRl3ulJ22F505aP3fuXwFhCJFJxGc= X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R121e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018046050;MF=baolin.wang@linux.alibaba.com;NM=1;PH=DS;RN=10;SR=0;TI=SMTPD_---0W1xC4XJ_1709720015; Received: from localhost(mailfrom:baolin.wang@linux.alibaba.com fp:SMTPD_---0W1xC4XJ_1709720015) by smtp.aliyun-inc.com; Wed, 06 Mar 2024 18:13:36 +0800 From: Baolin Wang To: akpm@linux-foundation.org Cc: muchun.song@linux.dev, osalvador@suse.de, david@redhat.com, linmiaohe@huawei.com, naoya.horiguchi@nec.com, mhocko@kernel.org, baolin.wang@linux.alibaba.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/3] mm: record the migration reason for struct migration_target_control Date: Wed, 6 Mar 2024 18:13:26 +0800 Message-Id: <7b95d4981e07211f57139fc5b1f7ce91b920cee4.1709719720.git.baolin.wang@linux.alibaba.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" To support different hugetlb allocation strategies during hugetlb migration based on various migration reasons, record the migration reason in the migration_target_control structure as a preparation. Signed-off-by: Baolin Wang Reviewed-by: Oscar Salvador --- mm/gup.c | 1 + mm/internal.h | 1 + mm/memory-failure.c | 1 + mm/memory_hotplug.c | 1 + mm/mempolicy.c | 1 + mm/migrate.c | 1 + mm/page_alloc.c | 1 + mm/vmscan.c | 3 ++- 8 files changed, 9 insertions(+), 1 deletion(-) diff --git a/mm/gup.c b/mm/gup.c index df83182ec72d..959a1a05b059 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -2132,6 +2132,7 @@ static int migrate_longterm_unpinnable_pages( struct migration_target_control mtc =3D { .nid =3D NUMA_NO_NODE, .gfp_mask =3D GFP_USER | __GFP_NOWARN, + .reason =3D MR_LONGTERM_PIN, }; =20 if (migrate_pages(movable_page_list, alloc_migration_target, diff --git a/mm/internal.h b/mm/internal.h index 2b7efffbe4d7..47edf69b6ee6 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -959,6 +959,7 @@ struct migration_target_control { int nid; /* preferred node id */ nodemask_t *nmask; gfp_t gfp_mask; + enum migrate_reason reason; }; =20 /* diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 9349948f1abf..780bb2aee0af 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -2666,6 +2666,7 @@ static int soft_offline_in_use_page(struct page *page) struct migration_target_control mtc =3D { .nid =3D NUMA_NO_NODE, .gfp_mask =3D GFP_USER | __GFP_MOVABLE | __GFP_RETRY_MAYFAIL, + .reason =3D MR_MEMORY_FAILURE, }; =20 if (!huge && folio_test_large(folio)) { diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index a444e2d7dd2b..b79ba36e09e0 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1841,6 +1841,7 @@ static void do_migrate_range(unsigned long start_pfn,= unsigned long end_pfn) struct migration_target_control mtc =3D { .nmask =3D &nmask, .gfp_mask =3D GFP_USER | __GFP_MOVABLE | __GFP_RETRY_MAYFAIL, + .reason =3D MR_MEMORY_HOTPLUG, }; int ret; =20 diff --git a/mm/mempolicy.c b/mm/mempolicy.c index f60b4c99f130..98ceb12e0e17 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -1070,6 +1070,7 @@ static long migrate_to_node(struct mm_struct *mm, int= source, int dest, struct migration_target_control mtc =3D { .nid =3D dest, .gfp_mask =3D GFP_HIGHUSER_MOVABLE | __GFP_THISNODE, + .reason =3D MR_SYSCALL, }; =20 nodes_clear(nmask); diff --git a/mm/migrate.c b/mm/migrate.c index 73a052a382f1..bde63010a3cf 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -2060,6 +2060,7 @@ static int do_move_pages_to_node(struct list_head *pa= gelist, int node) struct migration_target_control mtc =3D { .nid =3D node, .gfp_mask =3D GFP_HIGHUSER_MOVABLE | __GFP_THISNODE, + .reason =3D MR_SYSCALL, }; =20 err =3D migrate_pages(pagelist, alloc_migration_target, NULL, diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 96839b210abe..8e6dd3a1028b 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -6266,6 +6266,7 @@ int __alloc_contig_migrate_range(struct compact_contr= ol *cc, struct migration_target_control mtc =3D { .nid =3D zone_to_nid(cc->zone), .gfp_mask =3D GFP_USER | __GFP_MOVABLE | __GFP_RETRY_MAYFAIL, + .reason =3D MR_CONTIG_RANGE, }; =20 lru_cache_disable(); diff --git a/mm/vmscan.c b/mm/vmscan.c index 402c290fbf5a..510f438bb9e0 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -978,7 +978,8 @@ static unsigned int demote_folio_list(struct list_head = *demote_folios, .gfp_mask =3D (GFP_HIGHUSER_MOVABLE & ~__GFP_RECLAIM) | __GFP_NOWARN | __GFP_NOMEMALLOC | GFP_NOWAIT, .nid =3D target_nid, - .nmask =3D &allowed_mask + .nmask =3D &allowed_mask, + .reason =3D MR_DEMOTION, }; =20 if (list_empty(demote_folios)) --=20 2.39.3