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: 11967507 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=-13.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 D1624C433FE for ; Fri, 11 Dec 2020 08:17:01 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 91C2F23E56 for ; Fri, 11 Dec 2020 08:17:01 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 91C2F23E56 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linutronix.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6D3A46ECB5; Fri, 11 Dec 2020 08:16:23 +0000 (UTC) Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2F25F6EB27; Thu, 10 Dec 2020 19:42:26 +0000 (UTC) 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 Subject: [patch 08/30] genirq: Provide kstat_irqdesc_cpu() References: <20201210192536.118432146@linutronix.de> MIME-Version: 1.0 X-Mailman-Approved-At: Fri, 11 Dec 2020 08:16:08 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Karthikeyan Mitran , Peter Zijlstra , Catalin Marinas , dri-devel@lists.freedesktop.org, Chris Wilson , "James E.J. Bottomley" , Saeed Mahameed , netdev@vger.kernel.org, Will Deacon , Michal Simek , linux-s390@vger.kernel.org, afzal mohammed , Lorenzo Pieralisi , Dave Jiang , xen-devel@lists.xenproject.org, Leon Romanovsky , linux-rdma@vger.kernel.org, Marc Zyngier , Helge Deller , Russell King , Christian Borntraeger , linux-pci@vger.kernel.org, Jakub Kicinski , Heiko Carstens , Wambui Karuga , Allen Hubbe , Juergen Gross , David Airlie , linux-gpio@vger.kernel.org, Stefano Stabellini , Rodrigo Vivi , Bjorn Helgaas , Lee Jones , linux-arm-kernel@lists.infradead.org, Boris Ostrovsky , Tvrtko Ursulin , linux-parisc@vger.kernel.org, Pankaj Bharadiya , Hou Zhiqiang , Tariq Toukan , Jon Mason , linux-ntb@googlegroups.com, intel-gfx@lists.freedesktop.org, "David S. Miller" Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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 = ",";