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 X-Spam-Level: X-Spam-Status: No, score=-11.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 49406C4320A for ; Wed, 18 Aug 2021 09:28:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2E1D360ED5 for ; Wed, 18 Aug 2021 09:28:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232203AbhHRJ3K (ORCPT ); Wed, 18 Aug 2021 05:29:10 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:37098 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231373AbhHRJ3D (ORCPT ); Wed, 18 Aug 2021 05:29:03 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1629278908; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=Q9t8aE64CL1xo5txLMAa0dwZ+SjmOCP8ky9IEfoLYYU=; b=IcIR1BLtDacLd18UNIYwXINXxNFUjCjBlCzilL7d6FoGSvr5cm8tixdJsuJHhZBR65f0X+ XDBjGoMlN7pdn9U6VWHMzdE3t67tA2BEPLSuPoIw5BGpeLbZRgeRSjc/Z70Wsvw9dzAeV+ l5iylWOZ+VdG2VatNzrlCury8zKVUbE= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-496-k6wuv3VMP5mXdROmvyzfuw-1; Wed, 18 Aug 2021 05:28:25 -0400 X-MC-Unique: k6wuv3VMP5mXdROmvyzfuw-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id F0F8F1082925; Wed, 18 Aug 2021 09:28:23 +0000 (UTC) Received: from localhost (ovpn-8-40.pek2.redhat.com [10.72.8.40]) by smtp.corp.redhat.com (Postfix) with ESMTP id D9BAD687D5; Wed, 18 Aug 2021 09:28:19 +0000 (UTC) From: Ming Lei To: Thomas Gleixner , Jens Axboe Cc: linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, Christoph Hellwig , Ming Lei Subject: [PATCH V2 0/7] genirq/affinity: abstract new API from managed irq affinity spread Date: Wed, 18 Aug 2021 17:28:05 +0800 Message-Id: <20210818092812.787558-1-ming.lei@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, irq_build_affinity_masks() actually grouping CPUs evenly into each managed irq vector according to NUMA and CPU locality, and it is reasonable to abstract one generic API for grouping CPUs evenly, the idea is suggested by Thomas Gleixner. group_cpus_evenly() is abstracted and put into lib/, so blk-mq can re-use it to build default queue mapping. Please comments! V2: - fix build failure in case of !CONFIG_SMP - fix commit log typo - fix memory leak in last patch - add reviewed-by Since RFC: - remove RFC - rebase on -next tree Ming Lei (7): genirq/affinity: remove the 'firstvec' parameter from irq_build_affinity_masks genirq/affinity: pass affinity managed mask array to irq_build_affinity_masks genirq/affinity: don't pass irq_affinity_desc array to irq_build_affinity_masks genirq/affinity: rename irq_build_affinity_masks as group_cpus_evenly genirq/affinity: move group_cpus_evenly() into lib/ lib/group_cpus: allow to group cpus in case of !CONFIG_SMP blk-mq: build default queue map via group_cpus_evenly() block/blk-mq-cpumap.c | 65 ++---- include/linux/group_cpus.h | 14 ++ kernel/irq/affinity.c | 404 +--------------------------------- lib/Makefile | 2 + lib/group_cpus.c | 428 +++++++++++++++++++++++++++++++++++++ 5 files changed, 467 insertions(+), 446 deletions(-) create mode 100644 include/linux/group_cpus.h create mode 100644 lib/group_cpus.c -- 2.31.1