From patchwork Sat Nov 12 19:09:44 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yury Norov X-Patchwork-Id: 13041340 X-Patchwork-Delegate: herbert@gondor.apana.org.au 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 E9D75C43219 for ; Sat, 12 Nov 2022 19:09:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235086AbiKLTJ4 (ORCPT ); Sat, 12 Nov 2022 14:09:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52884 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234967AbiKLTJx (ORCPT ); Sat, 12 Nov 2022 14:09:53 -0500 Received: from mail-qv1-xf32.google.com (mail-qv1-xf32.google.com [IPv6:2607:f8b0:4864:20::f32]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B1D2917E30; Sat, 12 Nov 2022 11:09:52 -0800 (PST) Received: by mail-qv1-xf32.google.com with SMTP id mi9so5532318qvb.8; Sat, 12 Nov 2022 11:09:52 -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=C0ZwMR2gCmjCo8DSne7eN5n31OgpWeA+QwMIe/AT+TA=; b=EWbVcRK6VQQtBX4Tw7NbZb11qrqsmGD9Jz7Ot3MeTptcgDZLc39mF82hrl6ywjrbGO 5DByMs2+I/BKQAcmYr+M1oulbaFFR6fvvCL1VeoXyITEu+c7LOlxKBZr/B1yiagKsHz/ N9iZiiGa0dvk/iIMA1qC+r9oxhwONnN+biuByTPkrUqgI2iIW2l87LwX6tgI3lNXwjqt +vNTOOL2/FmFLVwQhoQjYogKD5yIQK2zy4+QlvaJ0iAP/an3r6WmvEDR1+gE3BWwQEL0 vsSsbuoMlUmnsQq+bNA0hKDexmx9FLzjsxm5BZN2hfp+NiTZzGbAP19s3mtS0XTYkAXn Dq3A== 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=C0ZwMR2gCmjCo8DSne7eN5n31OgpWeA+QwMIe/AT+TA=; b=wCpC/n214E3DtoMznShvqVU71CbY5BQJYafdvsrL/XEfI9JOq4kUJyAHndkuK3W8hR 800r5o3c3lePFKoH0ZNPBf9ZoS0kqa8GBlR+AfVmKrwDf7x6+aBmGuERJPLBNsK5CPo8 H9UUHNijGPIUh/5v5cLCvpCAYI8DcYOWpOTsxUBXBDvCi9T+2FAguGrdgcRrVSqHEV67 iV6+fxPXF8JmiXISGBOuLu/idSoFYpPfCO+n5UIHMwtsIZ23e/XpdcX3DiTWBidSS+xv ZJBwxFOZd5FdYT/iPB0Ja09RL65GBgW47Uz1pqhxFjzEMW+XoI1hUk06t2BsKmpNcAAC dJEg== X-Gm-Message-State: ANoB5plekUzv6XiBZHMB7rg9uCESn9Z2VEeXU88Rr+8aFZmziJLYisDC wKIFYyyjA2NPSZtRvVT1v/IqX4opA+M= X-Google-Smtp-Source: AA0mqf7QvfhjET/seOjh75TRhk2tq5bA2F/OeMmuwwt/hZZHlDiRotzdRhTdoZGFvZRyZDq5pElPhA== X-Received: by 2002:a05:6214:428f:b0:4bb:d68d:2744 with SMTP id og15-20020a056214428f00b004bbd68d2744mr6920529qvb.5.1668280191620; Sat, 12 Nov 2022 11:09:51 -0800 (PST) Received: from localhost (user-24-236-74-177.knology.net. [24.236.74.177]) by smtp.gmail.com with ESMTPSA id f2-20020ac87f02000000b003a4c3c4d2d4sm3192944qtk.49.2022.11.12.11.09.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 12 Nov 2022 11:09:51 -0800 (PST) From: Yury Norov To: linux-kernel@vger.kernel.org, "David S. Miller" , Andy Shevchenko , Barry Song , Ben Segall , haniel Bristot de Oliveira , Dietmar Eggemann , Gal Pressman , Greg Kroah-Hartman , Heiko Carstens , Ingo Molnar , Jakub Kicinski , Jason Gunthorpe , Jesse Brandeburg , Jonathan Cameron , Juri Lelli , Leon Romanovsky , Mel Gorman , 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 v2 2/4] cpumask: introduce cpumask_nth_and_andnot Date: Sat, 12 Nov 2022 11:09:44 -0800 Message-Id: <20221112190946.728270-3-yury.norov@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221112190946.728270-1-yury.norov@gmail.com> References: <20221112190946.728270-1-yury.norov@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Introduce cpumask_nth_and_andnot() based on find_nth_and_andnot_bit(). It's used in the following patch to traverse cpumasks without storing intermediate result in temporary cpumask. Signed-off-by: Yury Norov --- include/linux/cpumask.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h index c2aa0aa26b45..debfa2261569 100644 --- a/include/linux/cpumask.h +++ b/include/linux/cpumask.h @@ -391,6 +391,26 @@ unsigned int cpumask_nth_andnot(unsigned int cpu, const struct cpumask *srcp1, nr_cpumask_bits, cpumask_check(cpu)); } +/** + * cpumask_nth_and_andnot - get the Nth cpu set in 1st and 2nd cpumask, and clear in 3rd. + * @srcp1: the cpumask pointer + * @srcp2: the cpumask pointer + * @srcp3: the cpumask pointer + * @cpu: the N'th cpu to find, starting from 0 + * + * Returns >= nr_cpu_ids if such cpu doesn't exist. + */ +static inline +unsigned int cpumask_nth_and_andnot(unsigned int cpu, const struct cpumask *srcp1, + const struct cpumask *srcp2, + const struct cpumask *srcp3) +{ + return find_nth_and_andnot_bit(cpumask_bits(srcp1), + cpumask_bits(srcp2), + cpumask_bits(srcp3), + nr_cpumask_bits, cpumask_check(cpu)); +} + #define CPU_BITS_NONE \ { \ [0 ... BITS_TO_LONGS(NR_CPUS)-1] = 0UL \