From mboxrd@z Thu Jan 1 00:00:00 1970 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id EB26FC433EF for ; Sun, 23 Jan 2022 18:42:34 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 462936B0083; Sun, 23 Jan 2022 13:42:34 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 412926B0085; Sun, 23 Jan 2022 13:42:34 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 3017D6B0087; Sun, 23 Jan 2022 13:42:34 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0199.hostedemail.com [216.40.44.199]) by kanga.kvack.org (Postfix) with ESMTP id 21CE36B0083 for ; Sun, 23 Jan 2022 13:42:34 -0500 (EST) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id D110F92755 for ; Sun, 23 Jan 2022 18:42:33 +0000 (UTC) X-FDA: 79062422586.21.77A2D76 Received: from mail-pf1-f177.google.com (mail-pf1-f177.google.com [209.85.210.177]) by imf15.hostedemail.com (Postfix) with ESMTP id C307FA0032 for ; Sun, 23 Jan 2022 18:42:32 +0000 (UTC) Received: by mail-pf1-f177.google.com with SMTP id u130so9499705pfc.2 for ; Sun, 23 Jan 2022 10:42:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=85CEHLzivVSDPv5NoUUHMFbNwsVpSDhXVe4Dokl88jA=; b=UzLV4ACAW1Zy650aoKKKtti7eIYU39SU4smwBi6B3avNAIj+XR/PLCLBZK7l8VFZGd GOy2eGmfswc9be1FqLvOFJQ9k4AveCVBGC9efdwLQ/Ntp/+55BTmI5Wx6A1/VNWY4rKL f//7wEMw7b/7dWk9eXodLjfhTVgj7bWk//YBPIJptJPcK7+kqhioGoP0gZtSiBe9mT8Q FUrvSqGgkNljkIUpAVSAm6jqntWWFFJ8C7/aXlmsCAywzSh7xfUTuxF6RBVnzcyq6J8S bOkE/gKUxJf09SuXz0WQHQ6tjK3FC8HTY4bDHghjLZ6GOodD8DCQuZWaqY4aPyB0qjfg Zf3Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=85CEHLzivVSDPv5NoUUHMFbNwsVpSDhXVe4Dokl88jA=; b=ZYrXgbrz8FZu8FJjGOnxiC2eNfX99rWgMcOu1+yitiFfMr8Jo0SfOLNwxvHF6j6cdg 28uhxb/XHq3UtbsByGvUXHw82a9VwSJQJD1EzY7m90OBK58g8Dl4peslU/Y3Jv+O4HQp 2ayQP5TPN3KrV6QqhbUNgewYEBGrzzb2oatzoBL+IF/h9t/ev8fg3O7VrdwWj3euAoaI rIJb3e3L69d9fk8hNg4e+LT5kOFBmjO/MQyD2HNHjZ1yxcp+LZQCKCILv+hcx6lEP2QJ A1gJIyA0YRRyGubvoIct7k+q1FYc5pEehPoHe7NFys3vU4KBLbtlaQHaXeqTzon+0gNq w1ag== X-Gm-Message-State: AOAM532i0Sfy1BLNEu3RFPLym2e2H4sq1vAI8CKmsc9UDEI0JWGkl+VG pmXU457skIquUZ4QDfFUtT8= X-Google-Smtp-Source: ABdhPJzbT2vRHTzHp9RDGT6tMM884pEgiTMl6MSvk/izz/msw8mIEJTAbh58Y/esUmn/X7IAMRDKxg== X-Received: by 2002:a05:6a00:1407:b0:4c3:3ab:1467 with SMTP id l7-20020a056a00140700b004c303ab1467mr11218233pfu.22.1642963351381; Sun, 23 Jan 2022 10:42:31 -0800 (PST) Received: from localhost (searspoint.nvidia.com. [216.228.112.21]) by smtp.gmail.com with ESMTPSA id k13sm14218413pfc.176.2022.01.23.10.42.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 23 Jan 2022 10:42:31 -0800 (PST) From: Yury Norov To: Yury Norov , Andy Shevchenko , Rasmus Villemoes , Andrew Morton , =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= , Greg Kroah-Hartman , Peter Zijlstra , David Laight , Joe Perches , Dennis Zhou , Emil Renner Berthing , Nicholas Piggin , Matti Vaittinen , Alexey Klimov , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 52/54] lib/nodemask: add num_node_state_eq() Date: Sun, 23 Jan 2022 10:39:23 -0800 Message-Id: <20220123183925.1052919-53-yury.norov@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220123183925.1052919-1-yury.norov@gmail.com> References: <20220123183925.1052919-1-yury.norov@gmail.com> MIME-Version: 1.0 X-Rspamd-Queue-Id: C307FA0032 X-Stat-Signature: bc731cnqq3qjzx1eqwsmcgw5w3ce4u78 Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=UzLV4ACA; spf=pass (imf15.hostedemail.com: domain of yury.norov@gmail.com designates 209.85.210.177 as permitted sender) smtp.mailfrom=yury.norov@gmail.com; dmarc=pass (policy=none) header.from=gmail.com X-Rspamd-Server: rspam09 X-HE-Tag: 1642963352-708345 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Kernel code uses num_node_state() to compare number of nodes with a given number. The underlying code calls bitmap_weight(), and we can do it more efficiently with num_node_state_eq because conditional nodes_weight may stop traversing the nodemask earlier, as soon as condition is met. Signed-off-by: Yury Norov --- include/linux/nodemask.h | 5 +++++ mm/page_alloc.c | 2 +- 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h index 197598e075e9..c5014dbf3cce 100644 --- a/include/linux/nodemask.h +++ b/include/linux/nodemask.h @@ -466,6 +466,11 @@ static inline int num_node_state(enum node_states st= ate) return nodes_weight(node_states[state]); } =20 +static inline int num_node_state_eq(enum node_states state, int num) +{ + return nodes_weight_eq(node_states[state], num); +} + #define for_each_node_state(__node, __state) \ for_each_node_mask((__node), node_states[__state]) =20 diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 8dd6399bafb5..37496d764643 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -8328,7 +8328,7 @@ void __init page_alloc_init(void) int ret; =20 #ifdef CONFIG_NUMA - if (num_node_state(N_MEMORY) =3D=3D 1) + if (num_node_state_eq(N_MEMORY, 1)) hashdist =3D 0; #endif =20 --=20 2.30.2