From patchwork Wed Sep 8 02:59:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 12480013 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 71B8CC433F5 for ; Wed, 8 Sep 2021 02:59:16 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 29C9C61102 for ; Wed, 8 Sep 2021 02:59:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 29C9C61102 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id B8BCE940044; Tue, 7 Sep 2021 22:59:15 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B3C34940042; Tue, 7 Sep 2021 22:59:15 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A5194940044; Tue, 7 Sep 2021 22:59:15 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0181.hostedemail.com [216.40.44.181]) by kanga.kvack.org (Postfix) with ESMTP id 951B6940042 for ; Tue, 7 Sep 2021 22:59:15 -0400 (EDT) Received: from smtpin37.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 5BE3A181AC9B6 for ; Wed, 8 Sep 2021 02:59:15 +0000 (UTC) X-FDA: 78562899870.37.ABD7DEE Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf17.hostedemail.com (Postfix) with ESMTP id 1F1C6F000136 for ; Wed, 8 Sep 2021 02:59:15 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 14AB16113C; Wed, 8 Sep 2021 02:59:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1631069954; bh=IT922PgIv9S8UCSIAot2MPPvmcx6YWLGc3zj7DXQjQ4=; h=Date:From:To:Subject:In-Reply-To:From; b=kmRSb31i9AUkxlLQUNCBlbv0nnNvp8iajsno/zoh0YA9O9QxdKRbG7vk0md6QceVV flJ52kTjZyxlOtQYDbGiVJuUi4kzYxW3M5SeTkcWPiXwvoWWyKC2Ch9FVxbv9+R0nv /aopGQ6Xo4DMdGxB1kWl/8sobdgQfZEPgQwHP0NU= Date: Tue, 07 Sep 2021 19:59:13 -0700 From: Andrew Morton To: aklimov@redhat.com, akpm@linux-foundation.org, alobakin@pm.me, andriy.shevchenko@linux.intel.com, dennis@kernel.org, jolsa@redhat.com, linux-mm@kvack.org, mm-commits@vger.kernel.org, torvalds@linux-foundation.org, ulf.hansson@linaro.org, will@kernel.org, wsa+renesas@sang-engineering.com, yury.norov@gmail.com Subject: [patch 112/147] cpumask: use find_first_and_bit() Message-ID: <20210908025913.vhf6JYCU-%akpm@linux-foundation.org> In-Reply-To: <20210907195226.14b1d22a07c085b22968b933@linux-foundation.org> User-Agent: s-nail v14.8.16 Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=kmRSb31i; spf=pass (imf17.hostedemail.com: domain of akpm@linux-foundation.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 1F1C6F000136 X-Stat-Signature: nxbzdh9jk7mf5mi4e799hwqtb6ac39uz X-HE-Tag: 1631069955-453591 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: From: Yury Norov Subject: cpumask: use find_first_and_bit() Now we have an efficient implementation for find_first_and_bit(), so switch cpumask to use it where appropriate. Link: https://lkml.kernel.org/r/20210814211713.180533-7-yury.norov@gmail.com Signed-off-by: Yury Norov Tested-by: Wolfram Sang Cc: Alexander Lobakin Cc: Alexey Klimov Cc: Andy Shevchenko Cc: Dennis Zhou Cc: Jiri Olsa Cc: Ulf Hansson Cc: Will Deacon Signed-off-by: Andrew Morton --- include/linux/cpumask.h | 30 ++++++++++++++++++++---------- 1 file changed, 20 insertions(+), 10 deletions(-) --- a/include/linux/cpumask.h~cpumask-use-find_first_and_bit +++ a/include/linux/cpumask.h @@ -123,6 +123,12 @@ static inline unsigned int cpumask_first return 0; } +static inline unsigned int cpumask_first_and(const struct cpumask *srcp1, + const struct cpumask *srcp2) +{ + return 0; +} + static inline unsigned int cpumask_last(const struct cpumask *srcp) { return 0; @@ -167,7 +173,7 @@ static inline unsigned int cpumask_local static inline int cpumask_any_and_distribute(const struct cpumask *src1p, const struct cpumask *src2p) { - return cpumask_next_and(-1, src1p, src2p); + return cpumask_first_and(src1p, src2p); } static inline int cpumask_any_distribute(const struct cpumask *srcp) @@ -196,6 +202,19 @@ static inline unsigned int cpumask_first } /** + * cpumask_first_and - return the first cpu from *srcp1 & *srcp2 + * @src1p: the first input + * @src2p: the second input + * + * Returns >= nr_cpu_ids if no cpus set in both. See also cpumask_next_and(). + */ +static inline +unsigned int cpumask_first_and(const struct cpumask *srcp1, const struct cpumask *srcp2) +{ + return find_first_and_bit(cpumask_bits(srcp1), cpumask_bits(srcp2), nr_cpumask_bits); +} + +/** * cpumask_last - get the last CPU in a cpumask * @srcp: - the cpumask pointer * @@ -586,15 +605,6 @@ static inline void cpumask_copy(struct c #define cpumask_any(srcp) cpumask_first(srcp) /** - * cpumask_first_and - return the first cpu from *srcp1 & *srcp2 - * @src1p: the first input - * @src2p: the second input - * - * Returns >= nr_cpu_ids if no cpus set in both. See also cpumask_next_and(). - */ -#define cpumask_first_and(src1p, src2p) cpumask_next_and(-1, (src1p), (src2p)) - -/** * cpumask_any_and - pick a "random" cpu from *mask1 & *mask2 * @mask1: the first input cpumask * @mask2: the second input cpumask