From patchwork Fri Jul 1 20:00:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Samuel Holland X-Patchwork-Id: 12903729 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 653B9CCA48A for ; Fri, 1 Jul 2022 20:10:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232054AbiGAUKz (ORCPT ); Fri, 1 Jul 2022 16:10:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45612 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231812AbiGAUKv (ORCPT ); Fri, 1 Jul 2022 16:10:51 -0400 Received: from new2-smtp.messagingengine.com (new2-smtp.messagingengine.com [66.111.4.224]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B67561EAD7; Fri, 1 Jul 2022 13:10:48 -0700 (PDT) Received: from compute1.internal (compute1.nyi.internal [10.202.2.41]) by mailnew.nyi.internal (Postfix) with ESMTP id 28AC058020B; Fri, 1 Jul 2022 16:01:10 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute1.internal (MEProxy); Fri, 01 Jul 2022 16:01:10 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sholland.org; h= cc:cc:content-transfer-encoding:date:date:from:from:in-reply-to :message-id:mime-version:reply-to:sender:subject:subject:to:to; s=fm3; t=1656705670; x=1656712870; bh=h3WN3AcddFJuwhQ39XPEdgr5t ejPWmRF9a5JWUKLi6w=; b=mK5frjjpRETCdaizhOvpq/mQo5UlOZqfHCt356wLu +SqVP3qKJ9LvP7YyRWEopUxCgCJ/Co0nb1GRIXbVwdtlJ5JrYoRlSvc+27WDag9+ 3jqJC6Nc5lLjDB1EbFnpv2S6VMiJgoGG3ESQyrzvFx4wbwb1+hfvfkj14nzE1iZ9 iHVs2Uh7tOwAj5coKNt98E1KuIr4Dy7ZidSi8Si+tRxxbGIc8g9/Wkp/PXxkdKWp GwXvkDhS2Mkt7Y8U+OzIUgUEfaENyM7PjR+7UVXgmM8J+652ddmFvBKyk157w8wr Skl8C3hKCbHheCLVFZJbuy7hz1/cffoSdxxCfnrh8YV+w== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding:date:date :feedback-id:feedback-id:from:from:in-reply-to:message-id :mime-version:reply-to:sender:subject:subject:to:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm2; t= 1656705670; x=1656712870; bh=h3WN3AcddFJuwhQ39XPEdgr5tejPWmRF9a5 JWUKLi6w=; b=hcCVwh1PvSeKLtV/WWesjzpJEJOw4znKr5Z/2vhxnZuKQA9kLw4 /4+bCBG81guTmscsfsRlkY2MRf/An6IfLb4PqUB9cFC2NzaudqFlvP/yY19K+3XC pDHCoLiIcwUV2Xv5FAIqCmEYAOVR+oCL2f261uukUnOGmb9sZJ1Wjru1FpMPNx9q O20C8qlSGZIk/uqxcd6LnT2yDuqwiTmpUUWND72se1ELzfF/mrU6icJu6Gm0jlH3 iWOFR5OoOCZxlEPQplc7c7ud1SjE6qek/nk6mnJ70FNjkvapXHjyVwlAV5qpv1MZ 45+fzYTFXAvc9YboPqeOQ31my0wQpPDiZ5Q== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvfedrudehfedgudeggecutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfgh necuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmd enucfjughrpefhvfevufffkffoggfgsedtkeertdertddtnecuhfhrohhmpefurghmuhgv lhcujfholhhlrghnugcuoehsrghmuhgvlhesshhhohhllhgrnhgurdhorhhgqeenucggtf frrghtthgvrhhnpeekheffteehtdetfffgfeetteejvdefleeuvedufffguedtjedvheel vddvfffhveenucffohhmrghinhepkhgvrhhnvghlrdhorhhgnecuvehluhhsthgvrhfuih iivgeptdenucfrrghrrghmpehmrghilhhfrhhomhepshgrmhhuvghlsehshhholhhlrghn ugdrohhrgh X-ME-Proxy: Feedback-ID: i0ad843c9:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Fri, 1 Jul 2022 16:00:57 -0400 (EDT) From: Samuel Holland To: Marc Zyngier , Thomas Gleixner Cc: Samuel Holland , Andy Shevchenko , Bartosz Golaszewski , Bjorn Helgaas , Boris Ostrovsky , Borislav Petkov , Broadcom internal kernel review list , Chris Zankel , Colin Ian King , Dave Hansen , Dexuan Cui , Florian Fainelli , Guo Ren , "H. Peter Anvin" , Haiyang Zhang , Helge Deller , Ingo Molnar , Ivan Kokshaysky , "James E.J. Bottomley" , Jan Beulich , Joerg Roedel , Juergen Gross , Julia Lawall , "K. Y. Srinivasan" , Kees Cook , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , Linus Walleij , Lorenzo Pieralisi , Mark Rutland , Matt Turner , Max Filippov , Maximilian Heyne , Oleksandr Tyshchenko , Rich Felker , Richard Henderson , Rikard Falkeborn , Rob Herring , Russell King , Serge Semin , Stefano Stabellini , Stephen Hemminger , Sven Schnelle , Thomas Bogendoerfer , Wei Liu , Wei Xu , Will Deacon , Yoshinori Sato , iommu@lists.linux-foundation.org, iommu@lists.linux.dev, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-hyperv@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linux-pci@vger.kernel.org, linux-sh@vger.kernel.org, linux-xtensa@linux-xtensa.org, x86@kernel.org, xen-devel@lists.xenproject.org Subject: [PATCH v3 0/8] genirq: Provide real IRQ affinity masks in non-SMP configs Date: Fri, 1 Jul 2022 15:00:48 -0500 Message-Id: <20220701200056.46555-1-samuel@sholland.org> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org This series solves some inconsistency with how IRQ affinity masks are handled between SMP and non-SMP configurations. In non-SMP configs, an IRQ's true affinity is always cpumask_of(0), so irq_{,data_}get_affinity_mask now return that, instead of returning an uninitialized per-IRQ cpumask. This change makes iterating over the affinity mask do the right thing in both SMP and non-SMP configurations. To accomplish that: - patches 1-3 disable some library code that was broken anyway on !SMP - patches 4-7 refactor the code so that irq_{,data_}get_affinity_mask can return a const cpumask, since that is what cpumask_of provides - patch 8 drops the per-IRQ cpumask and replaces it with cpumask_of(0) This series was split from the v2 series here, which uses the new behavior in the RISC-V PLIC irqchip driver: https://lore.kernel.org/lkml/20220616064028.57933-1-samuel@sholland.org/ Changes in v3: - New patch to fix build errors in uniprocessor MIPS configs - New patch to drop irq_init_effective_affinity - New patch to introduce irq_data_update_affinity - New patch to make the returned cpumasks const - Use cpumask_of(0) instead of cpu_possible_mask Changes in v2: - New patch to prevent GENERIC_IRQ_IPI from being selected on !SMP Samuel Holland (8): irqchip/mips-gic: Only register IPI domain when SMP is enabled genirq: GENERIC_IRQ_IPI depends on SMP genirq: GENERIC_IRQ_EFFECTIVE_AFF_MASK depends on SMP genirq: Drop redundant irq_init_effective_affinity genirq: Refactor accessors to use irq_data_get_affinity_mask genirq: Add and use an irq_data_update_affinity helper genirq: Return a const cpumask from irq_data_get_affinity_mask genirq: Provide an IRQ affinity mask in non-SMP configs arch/alpha/kernel/irq.c | 2 +- arch/arm/mach-hisi/Kconfig | 2 +- arch/ia64/kernel/iosapic.c | 2 +- arch/ia64/kernel/irq.c | 4 +- arch/ia64/kernel/msi_ia64.c | 4 +- arch/mips/cavium-octeon/octeon-irq.c | 4 +- arch/parisc/kernel/irq.c | 2 +- arch/sh/kernel/irq.c | 7 +-- arch/x86/hyperv/irqdomain.c | 2 +- arch/xtensa/kernel/irq.c | 7 +-- drivers/iommu/hyperv-iommu.c | 2 +- drivers/irqchip/Kconfig | 19 +++---- drivers/irqchip/irq-bcm6345-l1.c | 4 +- drivers/irqchip/irq-mips-gic.c | 80 +++++++++++++++++++--------- drivers/parisc/iosapic.c | 2 +- drivers/pci/controller/pci-hyperv.c | 10 ++-- drivers/sh/intc/chip.c | 2 +- drivers/xen/events/events_base.c | 7 +-- include/linux/irq.h | 34 ++++++++---- kernel/irq/Kconfig | 2 + kernel/irq/chip.c | 8 +-- kernel/irq/debugfs.c | 2 +- kernel/irq/ipi.c | 16 +++--- kernel/irq/manage.c | 10 +--- 24 files changed, 140 insertions(+), 94 deletions(-)