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=-6.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no 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 C6D00C2D0A3 for ; Mon, 9 Nov 2020 09:42:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 65D7C20789 for ; Mon, 9 Nov 2020 09:42:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728979AbgKIJmt (ORCPT ); Mon, 9 Nov 2020 04:42:49 -0500 Received: from foss.arm.com ([217.140.110.172]:36208 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726176AbgKIJms (ORCPT ); Mon, 9 Nov 2020 04:42:48 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 4C0661042; Mon, 9 Nov 2020 01:42:48 -0800 (PST) Received: from e113632-lin.cambridge.arm.com (e113632-lin.cambridge.arm.com [10.1.194.46]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 93EC03F718; Mon, 9 Nov 2020 01:42:46 -0800 (PST) From: Valentin Schneider To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Thomas Gleixner , Marc Zyngier , Lorenzo Pieralisi , Jason Cooper , Andrew Lunn , Gregory Clement , Sebastian Hesselbarth , Florian Fainelli , Ray Jui , Scott Branden Subject: [PATCH 0/5] genirq: Get rid of handle_percpu_devid_fasteoi_ipi() Date: Mon, 9 Nov 2020 09:41:16 +0000 Message-Id: <20201109094121.29975-1-valentin.schneider@arm.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi folks, While hacking on the GIC flow handlers, I grew increasingly suspicious of handle_percpu_devid_fasteoi_ipi() and thus did a bit of digging. AFAICT it isn't actually needed and handle_percpu_devid_irq() would suffice. Argumentation is in patch 1. Tested on my Juno (GICv2) and eMAG (GICv3). Whichever way this goes I owe Marc some pastries, given I either - Missed something and created some noise - Turned my brain off back when reviewing this flow handler so maybe just start with pinging me what you want... Valentin Schneider (5): irqchip/gic, gic-v3: Make SGIs use handle_percpu_devid_irq() irqchip/armada-370-xp: Make IPIs use handle_percpu_devid_irq() irqchip/bcm2836: Make IPIs use handle_percpu_devid_irq() irqchip/hip04: Make IPIs use handle_percpu_devid_irq() Revert "genirq: Add fasteoi IPI flow" drivers/irqchip/irq-armada-370-xp.c | 2 +- drivers/irqchip/irq-bcm2836.c | 2 +- drivers/irqchip/irq-gic-v3.c | 6 ------ drivers/irqchip/irq-gic.c | 8 +------- drivers/irqchip/irq-hip04.c | 6 +----- include/linux/irq.h | 1 - kernel/irq/chip.c | 27 --------------------------- 7 files changed, 4 insertions(+), 48 deletions(-) -- 2.27.0