From nobody Mon Apr 6 01:43:23 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 04797C54EE9 for ; Tue, 13 Sep 2022 05:21:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230072AbiIMFVz (ORCPT ); Tue, 13 Sep 2022 01:21:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57186 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229743AbiIMFVi (ORCPT ); Tue, 13 Sep 2022 01:21:38 -0400 Received: from mail-qt1-x843.google.com (mail-qt1-x843.google.com [IPv6:2607:f8b0:4864:20::843]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C28184DF17 for ; Mon, 12 Sep 2022 22:21:36 -0700 (PDT) Received: by mail-qt1-x843.google.com with SMTP id cb8so7888240qtb.0 for ; Mon, 12 Sep 2022 22:21:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date; bh=1XRWs8o5mhtjVjekWksqEPPsUOrfZ/THf/lKjCmIa8Q=; b=gFqek4JUZfWndRZ9qqE8eUQBNHTMqm5WrRW+VYq7FE+UM3BKOEt/AGLwoGuV5iJpfJ jARd+iEAfO7TJrDy9U6THQ8tgoGOgBROnbVOKeYalBKUZ8tEAYO9FW5N4jZv/O/inzEB 94JXSCg6b74DPdB42obFT6v0KtT0Z71XfCnTnK1GQ9rvTM3WI3nUKfPR33/LvX8sV1Yd +jjC2bOLiBYofIvXDIDbC2089GEUbe1nXOHcMjgxZ1cNBj8DRFaceN1+s9WjKi5gcqNC RoomHVQBir2l/NroZOWlgMO2SD3yz8lJ6qSiAmuhEOv5gUH3wI7/K7TlOEaQBgqhLtZV u9TA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date; bh=1XRWs8o5mhtjVjekWksqEPPsUOrfZ/THf/lKjCmIa8Q=; b=yvAXm6btNn7QisZ9oSaKBK5zFlHKybzgGyyUc+h+6hstT0SUP538Lj1tP8U/xzz8wk ZtFQqoWiwUlEAh62k6LnRzLDADeuYPbYGQLprlASnL4zdFTIfiFugNCtPKnp9rOxKKU/ uyvaPcd15ys6vmQVFCiBXLTJUZfij5xEduio3U/EZd2RLSM4L4J4ZtQfEVntIMiG1sqL +HsUGv8LC7UuUkwxoi6VccdobEoWS2yoLi2kW066Ay/0UxmpLkfuWLCv6VIYLWpS+KVe yGkHa1pg2JJUy1CBpsjDR3gv521lOAIujpiC8Nu6aMGe/Sqy5A4U5DS5nBD0flKxcGhx 1pzA== X-Gm-Message-State: ACgBeo1anGl8inUAvkaQbMHw4sXjOPW3X/Yl0Tfly2/NYWhbBVmMEOMC ysf8k8q0X7BBGzNG75BR8Uk= X-Google-Smtp-Source: AA6agR5i5KHaoyIW3+pSFlCGQxEgfI5IUvoNndua0LD3juvvYNqU1YmfjNOPHkAEQ3JyyoHpY7l4+w== X-Received: by 2002:a05:622a:13cc:b0:342:fa43:95ac with SMTP id p12-20020a05622a13cc00b00342fa4395acmr26571539qtk.508.1663046495849; Mon, 12 Sep 2022 22:21:35 -0700 (PDT) Received: from sophie ([45.134.140.166]) by smtp.gmail.com with ESMTPSA id fz16-20020a05622a5a9000b00342fc6a8e25sm8095390qtb.50.2022.09.12.22.21.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 12 Sep 2022 22:21:35 -0700 (PDT) From: Rebecca Mckeever To: Mike Rapoport , linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: David Hildenbrand , Rebecca Mckeever Subject: [PATCH v6 4/4] memblock tests: add generic NUMA tests for memblock_alloc_try_nid* Date: Tue, 13 Sep 2022 00:21:12 -0500 Message-Id: <4b2c7e6e5f3a9837939e99293c77e0e6fc3ae4f9.1663046060.git.remckee0@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add tests for memblock_alloc_try_nid() and memblock_alloc_try_nid_raw() where the simulated physical memory is set up with multiple NUMA nodes. Additionally, two of these tests set nid !=3D NUMA_NO_NODE. All tests are run for both top-down and bottom-up allocation directions. The tested scenarios are: Range unrestricted: - region cannot be allocated: + none of the nodes have enough memory to allocate the region Range restricted: - region can be allocated in the specific node requested without dropping min_addr: + the range fully overlaps with the node, and there are adjacent reserved regions - region cannot be allocated: + nid is set to NUMA_NO_NODE and the total range can fit the region, but the range is split between two nodes and everything else is reserved Acked-by: David Hildenbrand Signed-off-by: Rebecca Mckeever --- tools/testing/memblock/tests/alloc_nid_api.c | 197 +++++++++++++++++++ 1 file changed, 197 insertions(+) diff --git a/tools/testing/memblock/tests/alloc_nid_api.c b/tools/testing/m= emblock/tests/alloc_nid_api.c index 7247fa145d7d..2c2d60f4e3e3 100644 --- a/tools/testing/memblock/tests/alloc_nid_api.c +++ b/tools/testing/memblock/tests/alloc_nid_api.c @@ -2316,6 +2316,173 @@ static int alloc_try_nid_bottom_up_numa_no_overlap_= high_check(void) return 0; } =20 +/* + * A test that tries to allocate a memory region in a specific NUMA node t= hat + * does not have enough memory to allocate a region of the requested size. + * Additionally, none of the nodes have enough memory to allocate the regi= on: + * + * +-----------------------------------+ + * | new | + * +-----------------------------------+ + * |-------+-------+-------+-------+-------+-------+-------+-------| + * | node0 | node1 | node2 | node3 | node4 | node5 | node6 | node7 | + * +-------+-------+-------+-------+-------+-------+-------+-------+ + * + * Expect no allocation to happen. + */ +static int alloc_try_nid_numa_large_region_generic_check(void) +{ + int nid_req =3D 3; + void *allocated_ptr =3D NULL; + phys_addr_t size =3D MEM_SIZE / SZ_2; + phys_addr_t min_addr; + phys_addr_t max_addr; + + PREFIX_PUSH(); + setup_numa_memblock(node_fractions); + + min_addr =3D memblock_start_of_DRAM(); + max_addr =3D memblock_end_of_DRAM(); + + allocated_ptr =3D run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES, + min_addr, max_addr, nid_req); + ASSERT_EQ(allocated_ptr, NULL); + + test_pass_pop(); + + return 0; +} + +/* + * A test that tries to allocate memory within min_addr and max_addr range= when + * there are two reserved regions at the borders. The requested node start= s at + * min_addr and ends at max_addr and is the same size as the region to be + * allocated: + * + * min_addr + * | max_addr + * | | + * v v + * | +-----------+-----------------------+-----------------------| + * | | node5 | requested | node7 | + * +------+-----------+-----------------------+-----------------------+ + * + + + * | +----+-----------------------+----+ | + * | | r2 | new | r1 | | + * +-------------+----+-----------------------+----+------------------+ + * + * Expect to merge all of the regions into one. The region counter and tot= al + * size fields get updated. + */ +static int alloc_try_nid_numa_reserved_full_merge_generic_check(void) +{ + int nid_req =3D 6; + int nid_next =3D nid_req + 1; + struct memblock_region *new_rgn =3D &memblock.reserved.regions[0]; + struct memblock_region *req_node =3D &memblock.memory.regions[nid_req]; + struct memblock_region *next_node =3D &memblock.memory.regions[nid_next]; + void *allocated_ptr =3D NULL; + struct region r1, r2; + phys_addr_t size =3D req_node->size; + phys_addr_t total_size; + phys_addr_t max_addr; + phys_addr_t min_addr; + + PREFIX_PUSH(); + setup_numa_memblock(node_fractions); + + r1.base =3D next_node->base; + r1.size =3D SZ_128; + + r2.size =3D SZ_128; + r2.base =3D r1.base - (size + r2.size); + + total_size =3D r1.size + r2.size + size; + min_addr =3D r2.base + r2.size; + max_addr =3D r1.base; + + memblock_reserve(r1.base, r1.size); + memblock_reserve(r2.base, r2.size); + + allocated_ptr =3D run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES, + min_addr, max_addr, nid_req); + + ASSERT_NE(allocated_ptr, NULL); + assert_mem_content(allocated_ptr, size, alloc_nid_test_flags); + + ASSERT_EQ(new_rgn->size, total_size); + ASSERT_EQ(new_rgn->base, r2.base); + + ASSERT_LE(new_rgn->base, req_node->base); + ASSERT_LE(region_end(req_node), region_end(new_rgn)); + + ASSERT_EQ(memblock.reserved.cnt, 1); + ASSERT_EQ(memblock.reserved.total_size, total_size); + + test_pass_pop(); + + return 0; +} + +/* + * A test that tries to allocate memory within min_addr and max_add range, + * where the total range can fit the region, but it is split between two n= odes + * and everything else is reserved. Additionally, nid is set to NUMA_NO_NO= DE + * instead of requesting a specific node: + * + * +-----------+ + * | new | + * +-----------+ + * | +---------------------+-----------| + * | | prev node | next node | + * +------+---------------------+-----------+ + * + + + * |----------------------+ +-----| + * | r1 | | r2 | + * +----------------------+-----------+-----+ + * ^ ^ + * | | + * | max_addr + * | + * min_addr + * + * Expect no allocation to happen. + */ +static int alloc_try_nid_numa_split_all_reserved_generic_check(void) +{ + void *allocated_ptr =3D NULL; + struct memblock_region *next_node =3D &memblock.memory.regions[7]; + struct region r1, r2; + phys_addr_t size =3D SZ_256; + phys_addr_t max_addr; + phys_addr_t min_addr; + + PREFIX_PUSH(); + setup_numa_memblock(node_fractions); + + r2.base =3D next_node->base + SZ_128; + r2.size =3D memblock_end_of_DRAM() - r2.base; + + r1.size =3D MEM_SIZE - (r2.size + size); + r1.base =3D memblock_start_of_DRAM(); + + min_addr =3D r1.base + r1.size; + max_addr =3D r2.base; + + memblock_reserve(r1.base, r1.size); + memblock_reserve(r2.base, r2.size); + + allocated_ptr =3D run_memblock_alloc_try_nid(size, SMP_CACHE_BYTES, + min_addr, max_addr, + NUMA_NO_NODE); + + ASSERT_EQ(allocated_ptr, NULL); + + test_pass_pop(); + + return 0; +} + /* Test case wrappers for NUMA tests */ static int alloc_try_nid_numa_simple_check(void) { @@ -2427,6 +2594,33 @@ static int alloc_try_nid_numa_no_overlap_high_check(= void) return 0; } =20 +static int alloc_try_nid_numa_large_region_check(void) +{ + test_print("\tRunning %s...\n", __func__); + run_top_down(alloc_try_nid_numa_large_region_generic_check); + run_bottom_up(alloc_try_nid_numa_large_region_generic_check); + + return 0; +} + +static int alloc_try_nid_numa_reserved_full_merge_check(void) +{ + test_print("\tRunning %s...\n", __func__); + run_top_down(alloc_try_nid_numa_reserved_full_merge_generic_check); + run_bottom_up(alloc_try_nid_numa_reserved_full_merge_generic_check); + + return 0; +} + +static int alloc_try_nid_numa_split_all_reserved_check(void) +{ + test_print("\tRunning %s...\n", __func__); + run_top_down(alloc_try_nid_numa_split_all_reserved_generic_check); + run_bottom_up(alloc_try_nid_numa_split_all_reserved_generic_check); + + return 0; +} + int __memblock_alloc_nid_numa_checks(void) { test_print("Running %s NUMA tests...\n", @@ -2443,6 +2637,9 @@ int __memblock_alloc_nid_numa_checks(void) alloc_try_nid_numa_no_overlap_split_check(); alloc_try_nid_numa_no_overlap_low_check(); alloc_try_nid_numa_no_overlap_high_check(); + alloc_try_nid_numa_large_region_check(); + alloc_try_nid_numa_reserved_full_merge_check(); + alloc_try_nid_numa_split_all_reserved_check(); =20 return 0; } --=20 2.25.1