From patchwork Sat Jan 21 04:24:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yury Norov X-Patchwork-Id: 13110862 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 702D8C52D77 for ; Sat, 21 Jan 2023 04:25:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229715AbjAUEZW (ORCPT ); Fri, 20 Jan 2023 23:25:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36482 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229707AbjAUEZJ (ORCPT ); Fri, 20 Jan 2023 23:25:09 -0500 Received: from mail-qt1-x834.google.com (mail-qt1-x834.google.com [IPv6:2607:f8b0:4864:20::834]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9D83E54119; Fri, 20 Jan 2023 20:24:50 -0800 (PST) Received: by mail-qt1-x834.google.com with SMTP id jr19so4581282qtb.7; Fri, 20 Jan 2023 20:24:50 -0800 (PST) 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 :message-id:reply-to; bh=+S0aKvtNtHji2MwhEJCerU5PDiGf8bD52pNGNrh5jes=; b=aMj8AEtUF7+dyhnay+QHtRZynp8reOr1WKixbCoxjKPgzn4RbIoBzC6ObzXVtimmCl gxeLz4Pf+NcsqI6ANdrOSokQ5PV2rFWyi8IuNdK/+325yIgghnbm2i35b/kBDRSzgU1E hHoJ9jiV//+RqlxtX18tN+85qBpVl9OTclfHDu7NSijv3lrX24mdNc0XJFldC/9B8tca zBY7y4R7i6JKiTNnPDjHxQrjyvvc8ob2w7rputsx8wrzgIZBWuhD3g764GOTseVURSl6 jdS+kq++ChxJmCNbWH1lTil1mePsY0mHnURRwnCoJy8tBXKgFpWOPgYjOghP27CjLDfs erxg== 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:message-id:reply-to; bh=+S0aKvtNtHji2MwhEJCerU5PDiGf8bD52pNGNrh5jes=; b=DxEqhksqJBmykFmrTzAO9S/MGMNsFhlcA/beSpojMxfg40U1D9udDMQWqHYQccFT0X uBivr6yXtB2dmu4xG5z5ZVV4UvBQ+mJs3qWqi06EoOXfOYedUjFCQn3UPTAMW4ygRE35 pHOStVX5ALLCExuaE9QrU3uLncm1k/EN86G1w9zxiRCkks+P/7rUfDxZaLCFHrN8CkS5 /wsV1TEVgWbn4ltHXitN6pgjoxvQ4t8s9rtNjB3SuiM+PJxkd91PzOP7J/HMgUu+nbVb +KxA8RTx96CHoTt/gmIDWrvKbVDX/lCVGppUvBZgWdmlVEDzcV5bmt/54s2H2KvIa0fU pZQw== X-Gm-Message-State: AFqh2kqRyITJn3BUYG3elXBx0DN/Hc4N2xhP3kV4UV/3+wgaOKKVNYbY XSBO3wcflJdacZ+HxSuwPIsCtA39sfo= X-Google-Smtp-Source: AMrXdXtIv5QggoFAoBrhAWpQnUP/+5MgCRar/zhpHAxgG25dU29UxDfYodLxvFHa/bEwvKhOLpn4Sw== X-Received: by 2002:ac8:6681:0:b0:3b6:3b1a:d028 with SMTP id d1-20020ac86681000000b003b63b1ad028mr22452427qtp.19.1674275089170; Fri, 20 Jan 2023 20:24:49 -0800 (PST) Received: from localhost (50-242-44-45-static.hfc.comcastbusiness.net. [50.242.44.45]) by smtp.gmail.com with ESMTPSA id dt26-20020a05620a479a00b00705c8cce5dcsm16652425qkb.111.2023.01.20.20.24.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Jan 2023 20:24:48 -0800 (PST) From: Yury Norov To: linux-kernel@vger.kernel.org, "David S. Miller" , Andy Shevchenko , Barry Song , Ben Segall , Dietmar Eggemann , Gal Pressman , Greg Kroah-Hartman , Haniel Bristot de Oliveira , Heiko Carstens , Ingo Molnar , Jacob Keller , Jakub Kicinski , Jason Gunthorpe , Jesse Brandeburg , Jonathan Cameron , Juri Lelli , Leon Romanovsky , Linus Torvalds , Mel Gorman , Peter Lafreniere , Peter Zijlstra , Rasmus Villemoes , Saeed Mahameed , Steven Rostedt , Tariq Toukan , Tariq Toukan , Tony Luck , Valentin Schneider , Vincent Guittot Cc: Yury Norov , linux-crypto@vger.kernel.org, netdev@vger.kernel.org, linux-rdma@vger.kernel.org Subject: [PATCH 7/9] sched/topology: Introduce for_each_numa_hop_mask() Date: Fri, 20 Jan 2023 20:24:34 -0800 Message-Id: <20230121042436.2661843-8-yury.norov@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230121042436.2661843-1-yury.norov@gmail.com> References: <20230121042436.2661843-1-yury.norov@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org From: Valentin Schneider The recently introduced sched_numa_hop_mask() exposes cpumasks of CPUs reachable within a given distance budget, wrap the logic for iterating over all (distance, mask) values inside an iterator macro. Signed-off-by: Valentin Schneider Reviewed-by: Yury Norov Signed-off-by: Yury Norov --- include/linux/topology.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/include/linux/topology.h b/include/linux/topology.h index 344c2362755a..fea32377f7c7 100644 --- a/include/linux/topology.h +++ b/include/linux/topology.h @@ -261,4 +261,22 @@ sched_numa_hop_mask(unsigned int node, unsigned int hops) } #endif /* CONFIG_NUMA */ +/** + * for_each_numa_hop_mask - iterate over cpumasks of increasing NUMA distance + * from a given node. + * @mask: the iteration variable. + * @node: the NUMA node to start the search from. + * + * Requires rcu_lock to be held. + * + * Yields cpu_online_mask for @node == NUMA_NO_NODE. + */ +#define for_each_numa_hop_mask(mask, node) \ + for (unsigned int __hops = 0; \ + mask = (node != NUMA_NO_NODE || __hops) ? \ + sched_numa_hop_mask(node, __hops) : \ + cpu_online_mask, \ + !IS_ERR_OR_NULL(mask); \ + __hops++) + #endif /* _LINUX_TOPOLOGY_H */