From patchwork Thu Dec 10 19:25:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 1414495 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; secure) header.d=linutronix.de header.i=@linutronix.de header.a=rsa-sha256 header.s=2020 header.b=D/de10U4; dkim=pass header.d=linutronix.de header.i=@linutronix.de header.a=ed25519-sha256 header.s=2020e header.b=uhk8uY0r; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CsPs85JbGz9sWS for ; Fri, 11 Dec 2020 06:59:56 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404364AbgLJT7e (ORCPT ); Thu, 10 Dec 2020 14:59:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53270 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390461AbgLJTnb (ORCPT ); Thu, 10 Dec 2020 14:43:31 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 479B4C0617B0; Thu, 10 Dec 2020 11:42:26 -0800 (PST) Message-Id: <20201210194043.362094758@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1607629344; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=xI8ipC8kVjJGltjSHu5Mwub/dbA42XKOSuIg0xDxbuM=; b=D/de10U4HoG38vblr7IeySKjPU1LbUwG6rWRmeGYZrTiPhh//Hh7l/GxJreJ0rFcvzRPJy uoauNylV8dWf/MoltroGmVGhvJ2oJ5Y1i1Hdh3B/UY4mD9pwH+y7Dg4V+Vuar0V4FZXmUS 6T9k0+65HYvYSEKNJ4TVXxdcFWWUmHXiCvk5q873lejGHd1ZF8kDnbNFZOuvndA/bZ6hqk upKi4g8D5MCEBYYTgyELzJKcRa+JlxwqpINFEbwiyouRus62LMleSD5uCsPspz8eEzaopF eLafHsQRj846r/5tje8mdg+dCV5YsColFl6docNWF4RiFgqrORcZz2o154ST/Q== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1607629344; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=xI8ipC8kVjJGltjSHu5Mwub/dbA42XKOSuIg0xDxbuM=; b=uhk8uY0rFu42URnjai4w+dmeZE7ul5z78imfPTBVOwBrf5zNSXRAMP26aad4ZYcrnfPUQU IQRkkJ1oiqPOXJDw== Date: Thu, 10 Dec 2020 20:25:44 +0100 From: Thomas Gleixner To: LKML Cc: Peter Zijlstra , Marc Zyngier , "James E.J. Bottomley" , Helge Deller , afzal mohammed , linux-parisc@vger.kernel.org, Russell King , linux-arm-kernel@lists.infradead.org, Mark Rutland , Catalin Marinas , Will Deacon , Christian Borntraeger , Heiko Carstens , linux-s390@vger.kernel.org, Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , David Airlie , Daniel Vetter , Pankaj Bharadiya , Chris Wilson , Wambui Karuga , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, Tvrtko Ursulin , Linus Walleij , linux-gpio@vger.kernel.org, Lee Jones , Jon Mason , Dave Jiang , Allen Hubbe , linux-ntb@googlegroups.com, Lorenzo Pieralisi , Rob Herring , Bjorn Helgaas , Michal Simek , linux-pci@vger.kernel.org, Karthikeyan Mitran , Hou Zhiqiang , Tariq Toukan , "David S. Miller" , Jakub Kicinski , netdev@vger.kernel.org, linux-rdma@vger.kernel.org, Saeed Mahameed , Leon Romanovsky , Boris Ostrovsky , Juergen Gross , Stefano Stabellini , xen-devel@lists.xenproject.org Subject: [patch 08/30] genirq: Provide kstat_irqdesc_cpu() References: <20201210192536.118432146@linutronix.de> MIME-Version: 1.0 Content-transfer-encoding: 8-bit Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Most users of kstat_irqs_cpu() have the irq descriptor already. No point in calling into the core code and looking it up once more. Use it in per_cpu_count_show() to start with. Signed-off-by: Thomas Gleixner --- include/linux/irqdesc.h | 6 ++++++ kernel/irq/irqdesc.c | 4 ++-- 2 files changed, 8 insertions(+), 2 deletions(-) --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -113,6 +113,12 @@ static inline void irq_unlock_sparse(voi extern struct irq_desc irq_desc[NR_IRQS]; #endif +static inline unsigned int irq_desc_kstat_cpu(struct irq_desc *desc, + unsigned int cpu) +{ + return desc->kstat_irqs ? *per_cpu_ptr(desc->kstat_irqs, cpu) : 0; +} + static inline struct irq_desc *irq_data_to_desc(struct irq_data *data) { return container_of(data->common, struct irq_desc, irq_common_data); --- a/kernel/irq/irqdesc.c +++ b/kernel/irq/irqdesc.c @@ -147,12 +147,12 @@ static ssize_t per_cpu_count_show(struct struct kobj_attribute *attr, char *buf) { struct irq_desc *desc = container_of(kobj, struct irq_desc, kobj); - int cpu, irq = desc->irq_data.irq; ssize_t ret = 0; char *p = ""; + int cpu; for_each_possible_cpu(cpu) { - unsigned int c = kstat_irqs_cpu(irq, cpu); + unsigned int c = irq_desc_kstat_cpu(desc, cpu); ret += scnprintf(buf + ret, PAGE_SIZE - ret, "%s%u", p, c); p = ",";