From nobody Fri Dec 19 17:37:35 2025 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 0BD19C83F2A for ; Wed, 30 Aug 2023 19:03:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239318AbjH3TAb (ORCPT ); Wed, 30 Aug 2023 15:00:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38424 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244328AbjH3M6T (ORCPT ); Wed, 30 Aug 2023 08:58:19 -0400 Received: from mail-pl1-x633.google.com (mail-pl1-x633.google.com [IPv6:2607:f8b0:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 88DB6193 for ; Wed, 30 Aug 2023 05:57:52 -0700 (PDT) Received: by mail-pl1-x633.google.com with SMTP id d9443c01a7336-1bf1935f6c2so6192005ad.1 for ; Wed, 30 Aug 2023 05:57:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1693400272; x=1694005072; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=likGmWzdcl79JyC0G273JC8fCg1Z1MuweBHmHeu5k34=; b=Ff+7Y1SRwwlAHeDnqTlv4FjDGlid7oBt2NqKoj7YgCeRiMZLdZWmnHVF0a0MEgrhzm z18CNFlUF+D3HMsi8f9EpufmKyPcapSQaR96OfPKapuDvtRM0Xkz8wPxr80S251EiksE WlIZp2NNwIphwQHxJ5etCxp2/LlkA8CFpULltM4XvXkaMcXXaeoUfw21dtRB0MtYpuq6 p7DNcA8gXF8do43AWiK989vsfyT04mfqrknCXr8c9Dt23gSZ7GPTnTYJIr9j1OpIu4Vo 2+7oR9NlMezOmbnP2nfC2JOmYC6uMr3CMfHygP9Gv1jL0RtykQTJ+aWG14A30wdXWzWl 0IzA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1693400272; x=1694005072; 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:message-id:reply-to; bh=likGmWzdcl79JyC0G273JC8fCg1Z1MuweBHmHeu5k34=; b=buw8ES7koXIMWKwN61c3Bbt+OWns+5dPaWs7jT8xZWISFFBGasEmSLmvoweaEsihdd f6A3BYbqyZbuWqeTUtnbPb9LxGrL6vSYyEqWnCalzzvFWuGuOtWoRs1LmpOU8y3XFSty iP/YYaiVDaXIE/rEFpep+HpfTsZTFYPQiv+cp5mnsifSGB1GV2bOtd9SwH523hpHs/la 8F1ScXne6VoU9Z5XfJLzjy+UtCAMsVEhusHrRmwrRjTYu9O1ciQpF1n79PNnS30uE1mx 4q5s+6yFr7lGOApA1yuHEhe6CxKzYmshmvimSvRynBm3NOf5xu4a8fa8d4i2FJruSJA+ SEXA== X-Gm-Message-State: AOJu0YxVETPRtv1jfAZcEtUAu0Rezq0vcW16+hu4kj5iB9s1C/RPuNEP V4IKGLp60b6WXsreLG0LfFWgRg== X-Google-Smtp-Source: AGHT+IHEZW1hekFijghmb4eDJa5CJeFIwOgrvu16t1pBzdglsm2NfGWuHdAFed9GN5ly19C8PHDQDQ== X-Received: by 2002:a17:903:228f:b0:1bc:4415:3c1 with SMTP id b15-20020a170903228f00b001bc441503c1mr8693507plh.7.1693400272035; Wed, 30 Aug 2023 05:57:52 -0700 (PDT) Received: from GL4FX4PXWL.bytedance.net ([139.177.225.247]) by smtp.gmail.com with ESMTPSA id iw1-20020a170903044100b001bbd8cf6b57sm11023265plb.230.2023.08.30.05.57.46 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Wed, 30 Aug 2023 05:57:51 -0700 (PDT) From: Peng Zhang To: Liam.Howlett@oracle.com, corbet@lwn.net, akpm@linux-foundation.org, willy@infradead.org, brauner@kernel.org, surenb@google.com, michael.christie@oracle.com, peterz@infradead.org, mathieu.desnoyers@efficios.com, npiggin@gmail.com, avagin@gmail.com Cc: linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Peng Zhang Subject: [PATCH v2 5/6] maple_tree: Update check_forking() and bench_forking() Date: Wed, 30 Aug 2023 20:56:53 +0800 Message-Id: <20230830125654.21257-6-zhangpeng.00@bytedance.com> X-Mailer: git-send-email 2.37.0 (Apple Git-136) In-Reply-To: <20230830125654.21257-1-zhangpeng.00@bytedance.com> References: <20230830125654.21257-1-zhangpeng.00@bytedance.com> 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" Updated check_forking() and bench_forking() to use __mt_dup() to duplicate maple tree. Also increased the number of VMAs, because the new way is faster. Signed-off-by: Peng Zhang --- lib/test_maple_tree.c | 61 +++++++++++++++++++++---------------------- 1 file changed, 30 insertions(+), 31 deletions(-) diff --git a/lib/test_maple_tree.c b/lib/test_maple_tree.c index 0ec0c6a7c0b5..72fba7cce148 100644 --- a/lib/test_maple_tree.c +++ b/lib/test_maple_tree.c @@ -1837,36 +1837,37 @@ static noinline void __init check_forking(struct ma= ple_tree *mt) { =20 struct maple_tree newmt; - int i, nr_entries =3D 134; + int i, nr_entries =3D 300, ret; void *val; MA_STATE(mas, mt, 0, 0); - MA_STATE(newmas, mt, 0, 0); + MA_STATE(newmas, &newmt, 0, 0); + + mt_init_flags(&newmt, MT_FLAGS_ALLOC_RANGE); =20 for (i =3D 0; i <=3D nr_entries; i++) mtree_store_range(mt, i*10, i*10 + 5, xa_mk_value(i), GFP_KERNEL); =20 + mt_set_non_kernel(99999); - mt_init_flags(&newmt, MT_FLAGS_ALLOC_RANGE); - newmas.tree =3D &newmt; - mas_reset(&newmas); - mas_reset(&mas); mas_lock(&newmas); - mas.index =3D 0; - mas.last =3D 0; - if (mas_expected_entries(&newmas, nr_entries)) { + mas_lock(&mas); + + ret =3D __mt_dup(mt, &newmt, GFP_NOWAIT | __GFP_NOWARN); + if (ret) { pr_err("OOM!"); BUG_ON(1); } - rcu_read_lock(); - mas_for_each(&mas, val, ULONG_MAX) { - newmas.index =3D mas.index; - newmas.last =3D mas.last; + + mas_set(&newmas, 0); + mas_for_each(&newmas, val, ULONG_MAX) { mas_store(&newmas, val); } - rcu_read_unlock(); - mas_destroy(&newmas); + + mas_unlock(&mas); mas_unlock(&newmas); + + mas_destroy(&newmas); mt_validate(&newmt); mt_set_non_kernel(0); mtree_destroy(&newmt); @@ -1974,12 +1975,11 @@ static noinline void __init check_mas_store_gfp(str= uct maple_tree *mt) #if defined(BENCH_FORK) static noinline void __init bench_forking(struct maple_tree *mt) { - struct maple_tree newmt; - int i, nr_entries =3D 134, nr_fork =3D 80000; + int i, nr_entries =3D 300, nr_fork =3D 80000, ret; void *val; MA_STATE(mas, mt, 0, 0); - MA_STATE(newmas, mt, 0, 0); + MA_STATE(newmas, &newmt, 0, 0); =20 for (i =3D 0; i <=3D nr_entries; i++) mtree_store_range(mt, i*10, i*10 + 5, @@ -1988,25 +1988,24 @@ static noinline void __init bench_forking(struct ma= ple_tree *mt) for (i =3D 0; i < nr_fork; i++) { mt_set_non_kernel(99999); mt_init_flags(&newmt, MT_FLAGS_ALLOC_RANGE); - newmas.tree =3D &newmt; - mas_reset(&newmas); - mas_reset(&mas); - mas.index =3D 0; - mas.last =3D 0; - rcu_read_lock(); + mas_lock(&newmas); - if (mas_expected_entries(&newmas, nr_entries)) { - printk("OOM!"); + mas_lock(&mas); + ret =3D __mt_dup(mt, &newmt, GFP_NOWAIT | __GFP_NOWARN); + if (ret) { + pr_err("OOM!"); BUG_ON(1); } - mas_for_each(&mas, val, ULONG_MAX) { - newmas.index =3D mas.index; - newmas.last =3D mas.last; + + mas_set(&newmas, 0); + mas_for_each(&newmas, val, ULONG_MAX) { mas_store(&newmas, val); } - mas_destroy(&newmas); + + mas_unlock(&mas); mas_unlock(&newmas); - rcu_read_unlock(); + + mas_destroy(&newmas); mt_validate(&newmt); mt_set_non_kernel(0); mtree_destroy(&newmt); --=20 2.20.1