From patchwork Thu Feb 10 22:49:03 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yury Norov X-Patchwork-Id: 12742599 X-Patchwork-Delegate: jgg@ziepe.ca 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 C6BEDC433EF for ; Thu, 10 Feb 2022 23:33:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242420AbiBJXdv (ORCPT ); Thu, 10 Feb 2022 18:33:51 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:43996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231627AbiBJXdu (ORCPT ); Thu, 10 Feb 2022 18:33:50 -0500 Received: from mail-io1-xd2a.google.com (mail-io1-xd2a.google.com [IPv6:2607:f8b0:4864:20::d2a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1CF07E83; Thu, 10 Feb 2022 15:33:50 -0800 (PST) Received: by mail-io1-xd2a.google.com with SMTP id h7so9454812iof.3; Thu, 10 Feb 2022 15:33:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=scQQOeGEKS1UtnSb4hDa2pMn49T7lX7tre18iE1yAHU=; b=RIBQ3M1+e7Un6Pm8klMv7JFRyzLD6R+Ak9wA8JMgVvjGGuFJshj+1pYyY0wdO/sViu r/Sy2qLBoQJw0gRyu/afxAsCIuXSI2sSFdu1izZtWcqnwuDs2ZTvAzbFVFezEXxG+raL rq/FBsjW8A6NSkaXInMpTgc7OsquM6YmI2Q63qt5QOeHsXoQ5u90pe3WWu3iprephA1b d0YrHC/kIfZUHXhzpfBTs1G6T6tsaKxLKbBCCmFVfbNLDUavDbYlK9LcgOLDw3KGs7S3 wm2wh5bErKqLnwUFNL6fS5uN9xQAWwZpWzgQoRe4pwJHGyYuKaQt+yygbiUWOaPEYZjL 3Pgw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=scQQOeGEKS1UtnSb4hDa2pMn49T7lX7tre18iE1yAHU=; b=C8SmWh+6uKqhsdY9wcTHH1Q+8J6e+I/9iDDCevvC01JVMNcg65rGOADum2u3y5rAzE Qi0G8IKSiCJjVGgNeqSynxoUWX+IN//foBKNge5CAOLiOZ8BA3jV+TuQT4jbwlQth5rV Es83+JviYMHc6wmecRicKeJQfHYJ2JmPR+e4yga1zL7CBf+rSaksFFfZEi/tNLFtFWte dYdvAf7h4lxul/ScALTwVh65518WpeY5jDm57TBNkha5gumJpGLbJKiZ7m/C3rb6WjqM YAzwTUTkYGufW6ZEW4Pq3imslVDpk5VVMn8s8nKFH+kMiRzdkzw4piYnmoYYCjaPWzvY 8cog== X-Gm-Message-State: AOAM532wtBBhOsREiskDMFqhbov5p+WEcY0kEbuQ/4Pt010ds4zfat1B PNC9Tc1WvAtEG5zEssS9Ltg= X-Google-Smtp-Source: ABdhPJwXeQ/bXUwb8aHBaOdNFbuQO4MW/NT2Fa7afUSNlrVEzUO80EGBGp2QuHnt22Zclxq0J+BZVg== X-Received: by 2002:a05:6638:1607:: with SMTP id x7mr1605707jas.226.1644536029481; Thu, 10 Feb 2022 15:33:49 -0800 (PST) Received: from localhost ([12.28.44.171]) by smtp.gmail.com with ESMTPSA id d80sm8376224iof.15.2022.02.10.15.33.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 10 Feb 2022 15:33:49 -0800 (PST) From: Yury Norov To: Yury Norov , Andy Shevchenko , Rasmus Villemoes , Andrew Morton , =?utf-8?b?TWljaGHFgiBNaXJvc8WC?= =?utf-8?b?YXc=?= , 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, Mike Marciniszyn , Dennis Dalessandro , Jason Gunthorpe , linux-rdma@vger.kernel.org Cc: Leon Romanovsky Subject: [PATCH 19/49] RDMA/hfi: replace cpumask_weight with cpumask_empty where appropriate Date: Thu, 10 Feb 2022 14:49:03 -0800 Message-Id: <20220210224933.379149-20-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 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org drivers/infiniband/hw/hfi1/affinity.c code calls cpumask_weight() to check if any bit of a given cpumask is set. We can do it more efficiently with cpumask_empty() because cpumask_empty() stops traversing the cpumask as soon as it finds first set bit, while cpumask_weight() counts all bits unconditionally. Signed-off-by: Yury Norov Reviewed-by: Leon Romanovsky --- drivers/infiniband/hw/hfi1/affinity.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/hw/hfi1/affinity.c b/drivers/infiniband/hw/hfi1/affinity.c index 706b3b659713..877f8e84a672 100644 --- a/drivers/infiniband/hw/hfi1/affinity.c +++ b/drivers/infiniband/hw/hfi1/affinity.c @@ -666,7 +666,7 @@ int hfi1_dev_affinity_init(struct hfi1_devdata *dd) * engines, use the same CPU cores as general/control * context. */ - if (cpumask_weight(&entry->def_intr.mask) == 0) + if (cpumask_empty(&entry->def_intr.mask)) cpumask_copy(&entry->def_intr.mask, &entry->general_intr_mask); } @@ -686,7 +686,7 @@ int hfi1_dev_affinity_init(struct hfi1_devdata *dd) * vectors, use the same CPU core as the general/control * context. */ - if (cpumask_weight(&entry->comp_vect_mask) == 0) + if (cpumask_empty(&entry->comp_vect_mask)) cpumask_copy(&entry->comp_vect_mask, &entry->general_intr_mask); }