From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj2-f12.google.com (mail-pj2-f12.google.com [74.125.227.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5F48A34402B for ; Mon, 28 Sep 2026 12:26:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.227.140 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790598387; cv=none; b=N+mqg5dDzRInOjb8zQAt0/ufZhinp1hUc/5YwHgOes9uXJYuPn1fZ/BW0k9Gaq35jM4p8SlagQUwVVfTwmChEoEhqHu7l4sopqWfkr+kqUS02frnJ2h/2qRGmch3IHsKPQrnRut9UxqqL8KeyIK/YYLXTSuvGRsA90bsR3EpJUQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790598387; c=relaxed/simple; bh=ljRvTa1FKA++fXKqZkWKN8lwihjtnE8tip6RujlYs5Y=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=IkN5561tT6WfsASs93jxxzl7AjR4DondnA6JtREBPEwVvmsmKykC/P6euEb72mG9a7c9KjV0FUBJDsk4LIv1XDmIj8XbjgI06M3zvimsdFRywYGrtaoeaF8M4p6ib7jebv4B9hoIKRb2QcrN+wZExbuE4U4y9TM/cTRsUNMqKV8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=YmoSSesC; arc=none smtp.client-ip=74.125.227.140 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="YmoSSesC" Received: by mail-pj2-f12.google.com with SMTP id d9443c01a7336-2d93ff61046so14930635ad.3 for ; Mon, 28 Sep 2026 05:26:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1790598383; x=1791203183; 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:content-type; bh=eFyOFPjEEQvNyGsovA6lNcMTRXqLjejzL5M22wl797U=; b=YmoSSesCMYZUOy5SLMPEbg4dlhpMUeoWMwanjWzLXri7Y27xAgSN4ZV35BV8GnuAKo zulw6BBsm2r/s6ROttoUKc6fIGkNLwaiQ8WMeXYqyBnlf6JH8R2XG60M5adfIno8L4qq ZzGk8bARotS6o0we3CMZwh2Mu3c4tK7KcLE9JK8PYTztSMfP7ziN3HUtSzMqQgpozLTt fpaGwTGI9QM1KSx+ZK1jQMv26hcmJK8NqcZwlYamsvni+PcjhLtMSBTum2qR4X6/gT6D q/saV+Ie03Gaowz1gK47GG55w/9+vxudKkbm4ZAhvOrZrBqobH3YKqxU85Ba7IqXcN/W 3cyQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1790598384; x=1791203184; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=eFyOFPjEEQvNyGsovA6lNcMTRXqLjejzL5M22wl797U=; b=y9Ff1SizJ2IKhxlYvZj7ex2Snt7KmVQb7rxMkYrPU9k5bP+fyjPfDaBF3+Y4X7uIdY GO6E2l/1vHvtyjvetofOIEwbgUaOfEjOt/tMSITvuWppyfiFqG7Oy0PVU2B06t2bHFO3 tjeXtDb+y7tLjcscKkNeCSSCWkZgeh0Pq6oJ/2d4cGwAbXm92aYVVSmTo0/0cP/ESddA jnNNUOye9cAmjAazT7IkC7lN73Yd4RbeRFQVDDIABVQHi8KZltQZVdF3VKxM/E4GOJSr V931zRMnW1sIGlUnX2KPHDhRttxHttfmg8NfrhUqZ+W1c5/IxBcqp4VKtDPR+qpXaBuS qVfQ== X-Forwarded-Encrypted: i=1; AKwUvBxTlMY5OiDIXA+8ueCGF/30oabLbdMKdiXt2lNEnmixb0AF13kufsTnslvuq6ZhlDZKiyeemvS29bgpDk0=@vger.kernel.org X-Gm-Message-State: AFq9FYJjgYnv1XwB05Iip2M4/OBxLM9dAy21HkxUHXT2gSHZs0qqyeJI MKWnh38qB7Hz75rULFolG8TTxzXLuQjGnRo6/fnzlfc5/NRvDFbx243Q X-Gm-Gg: AYBFou1G6wCjrSnaijmHwOL187ImwdJ9h793gB8C2fd5K/XX53xt0om3XQBYqqo7BpW fZlIFLbbjl1Ao4HWWqAzYfVIvG/COBQHQ+uBM1pML5F7Pudh9q1yEyUqL9rFSraaM2ab3uMTSjX KuNpBlrv02RBBgaVNl0C9DgG7b8BoXVtWnJ7FwQytyfvi1kgVHPu1W2NNnVrlBHDJfBSYvIFkTh 96DcdaM5kcsc1g+i9NiFJNrjBTk64tP6iFAcTr3fBuubK1BwiLtMkhqPcR48TMU0H+6IF1uyfOd oRYFQZhN3Uuk/GE3p4L8nMG7expkOtrKLt+5DjvAutyQ6iywtptS+yjh3caZwkFN/80Mh6CQfP/ NWI+5Rgibq3n1NdJlM605ExGfDFbzA5BoRR2xSt1p7jWJOYXL1KbYF6DykY42FK3dcIRXMb7Z9c zlYxouSyhqhG8xHF6LAW3gB9EJ6IJOi5Bk4khdThrzbGIkGGLjaKdEKHePyhMuMzBiWa4huWw5k 7x0kkiRkgMqkwxsnFxlHeJ9cdN4BE55qQ5SRMw8UadpfIeTazhMRcmowCIhQ5ymhcIXIY7P7yhd exkiiKOnI3fGWzdRWRrV X-Received: by 2002:a17:903:b85:b0:2bf:dd0:c8b1 with SMTP id d9443c01a7336-2df7da4bf1fmr101833885ad.0.1790598383395; Mon, 28 Sep 2026 05:26:23 -0700 (PDT) Received: from NV-9MNJ414.tailae2068.ts.net (2001-b011-2006-1fb9-8409-0195-705e-5b47.dynamic-ip6.hinet.net. [2001:b011:2006:1fb9:8409:195:705e:5b47]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2df90fbc951sm40485615ad.8.2026.09.28.05.26.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Sep 2026 05:26:22 -0700 (PDT) From: Yiwei Lin To: Andrew Morton , Peter Zijlstra Cc: Yiwei Lin , Ingo Molnar , Juri Lelli , Vincent Guittot , Davidlohr Bueso , Jonathan Corbet , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/3] rbtree_test: use rb_add() and rb_add_cached() for the basic tests Date: Mon, 28 Sep 2026 20:26:09 +0800 Message-Id: <20260928122611.336351-2-s921975628@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260928122611.336351-1-s921975628@gmail.com> References: <20260928122611.336351-1-s921975628@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit insert() and insert_cached() open-code exactly what the generic rb_add() and rb_add_cached() helpers do. Use the helpers instead. Besides removing duplicated code, this makes rbtree_test cover the helpers themselves, which is what most in-tree rbtree users call nowadays. Signed-off-by: Yiwei Lin Assisted-by: LLM --- lib/rbtree_test.c | 37 ++++++++----------------------------- 1 file changed, 8 insertions(+), 29 deletions(-) diff --git a/lib/rbtree_test.c b/lib/rbtree_test.c index 768c5e6453f37..c1386d328cfb1 100644 --- a/lib/rbtree_test.c +++ b/lib/rbtree_test.c @@ -30,41 +30,20 @@ static struct test_node *nodes = NULL; static struct rnd_state rnd; -static void insert(struct test_node *node, struct rb_root_cached *root) +static inline bool less(struct rb_node *a, const struct rb_node *b) { - struct rb_node **new = &root->rb_root.rb_node, *parent = NULL; - u32 key = node->key; - - while (*new) { - parent = *new; - if (key < rb_entry(parent, struct test_node, rb)->key) - new = &parent->rb_left; - else - new = &parent->rb_right; - } + return rb_entry(a, struct test_node, rb)->key < + rb_entry(b, struct test_node, rb)->key; +} - rb_link_node(&node->rb, parent, new); - rb_insert_color(&node->rb, &root->rb_root); +static void insert(struct test_node *node, struct rb_root_cached *root) +{ + rb_add(&node->rb, &root->rb_root, less); } static void insert_cached(struct test_node *node, struct rb_root_cached *root) { - struct rb_node **new = &root->rb_root.rb_node, *parent = NULL; - u32 key = node->key; - bool leftmost = true; - - while (*new) { - parent = *new; - if (key < rb_entry(parent, struct test_node, rb)->key) - new = &parent->rb_left; - else { - new = &parent->rb_right; - leftmost = false; - } - } - - rb_link_node(&node->rb, parent, new); - rb_insert_color_cached(&node->rb, root, leftmost); + rb_add_cached(&node->rb, root, less); } static inline void erase(struct test_node *node, struct rb_root_cached *root) -- 2.34.1