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 1A930C433EF for ; Fri, 11 Feb 2022 00:35:44 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 704FD6B0073; Thu, 10 Feb 2022 19:35:44 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 6B4306B0075; Thu, 10 Feb 2022 19:35:44 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 555586B0078; Thu, 10 Feb 2022 19:35:44 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0126.hostedemail.com [216.40.44.126]) by kanga.kvack.org (Postfix) with ESMTP id 48B036B0073 for ; Thu, 10 Feb 2022 19:35:44 -0500 (EST) Received: from smtpin29.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 028F5824C420 for ; Fri, 11 Feb 2022 00:35:44 +0000 (UTC) X-FDA: 79128631008.29.3D7C361 Received: from mail-qt1-f170.google.com (mail-qt1-f170.google.com [209.85.160.170]) by imf03.hostedemail.com (Postfix) with ESMTP id 9AA7420008 for ; Fri, 11 Feb 2022 00:35:43 +0000 (UTC) Received: by mail-qt1-f170.google.com with SMTP id k25so7399466qtp.4 for ; Thu, 10 Feb 2022 16:35:43 -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=OWAdmxyB++0+PrjBMyb2j1q4M+ZTDvPBI87BwMKOTA4=; b=px25tVfseTRg17nKrinckLpm5Os6T2EDwYc8LKgshVBbe8wsdoAH40zqblIKerCD/M 9FOLPx46bt7sHkinZB7cbxFBdikM66T7mIE2f+XeWCQEEWgZ6+Fj8c60iMtssJ2j4Ax5 ywQwibJ3q+gTnIvO+B0epbOGU2k7wcFwtAmB2Ekl9ZcADK2LwleSSxyJRs3DD/O5DZ2q 3TtJYkbVmKfY7d2ve4Ep5xreuUGke1oZrOtsnTBOvbkyt9qrnwapvEabYRk+An2u5fDB srQ7MLPu2N9T8Fk0fsc3+eu95bT6srOmeEd1PY3YKp7ljCULaG+YIorAkRi025pE/HtS At7Q== 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=OWAdmxyB++0+PrjBMyb2j1q4M+ZTDvPBI87BwMKOTA4=; b=VXU5GN3wos6p2CTNBEQZCJQl/+75lDVMREKT8pLnV2gIJoQtnvqd+F2+fFPXWSakq6 9Gzu9DO7KHSxcf3JrHhdwcSyo2LrZvdiS8UVrYMFWgohy6bHxYkleLFZagA1ht341ayr zdXzSaOPji/xPTKfAZwTTVUwFkBz+ThO/TkHpRjPqwKbIZVchUmJjREPCZEaBwd26xET Z3qU1e7tWxhbb4Z//n48E4P23pWSxeRlBs7qzUHIJBmw4KhaXQBmJ1Mq2Yc/88bGm6dk aZMLjYuMjsMng3uE/vvSOEK1lHzqSvrvp0k6YfpBo5KrKsKupt+/f7T6V9CjUUTJt71i FQzg== X-Gm-Message-State: AOAM532RuO1yfNYwPSRupAxYEm6sUWURBHefUYOoW6x1x5OoPdV0rxpR ayHBSVTyVtmm4u5s25ZTW2U= X-Google-Smtp-Source: ABdhPJwKE/7L+78ImyHSzKItwQ+7D0kCNRZ6HRgstwY/P0UGJdT1+mnItTy7cbAEdrMnsxIjkAmO9Q== X-Received: by 2002:ac8:5747:: with SMTP id 7mr6794649qtx.95.1644539742833; Thu, 10 Feb 2022 16:35:42 -0800 (PST) Received: from localhost ([12.28.44.171]) by smtp.gmail.com with ESMTPSA id k13sm11581386qko.45.2022.02.10.16.35.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Feb 2022 16:35:42 -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 47/49] nodemask: add num_node_state_eq() Date: Thu, 10 Feb 2022 14:49:31 -0800 Message-Id: <20220210224933.379149-48-yury.norov@gmail.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220210224933.379149-1-yury.norov@gmail.com> References: <20220210224933.379149-1-yury.norov@gmail.com> MIME-Version: 1.0 X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 9AA7420008 X-Stat-Signature: thprtpyqqbeh1hu53oohzsstbbnrbaq6 X-Rspam-User: Authentication-Results: imf03.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=px25tVfs; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (imf03.hostedemail.com: domain of yury.norov@gmail.com designates 209.85.160.170 as permitted sender) smtp.mailfrom=yury.norov@gmail.com X-HE-Tag: 1644539743-915133 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: Page allocator 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_weig= ht may stop traversing the nodemask earlier, as soon as condition is (or is not) 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 cface1d38093..897e64b66ca4 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -8434,7 +8434,7 @@ 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 2.32.0