From patchwork Thu Dec 10 19:25:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 11966365 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 D7CDBC4361B for ; Thu, 10 Dec 2020 20:09:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 988D723A7C for ; Thu, 10 Dec 2020 20:09:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404492AbgLJUJr (ORCPT ); Thu, 10 Dec 2020 15:09:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53204 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404279AbgLJTnF (ORCPT ); Thu, 10 Dec 2020 14:43:05 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EB7F7C0617A7; Thu, 10 Dec 2020 11:42:24 -0800 (PST) Message-Id: <20201210194043.268774449@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1607629343; 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=KtzFp0nR+dJW1v891+1wc4D+KUTADWJVxpq6j1ykdfo=; b=BwWrBYP0c3Z0lFh3V6qC90H7c5G9PHEfLbQKd0hztOiqwJ4kBCiNk+VDHIcCk1P/HxJJE+ zt6CbhOUy0zFcpFdRmOFsyfb9chR0Qx1RUaHNJMzGPe4/YSaExFvgbHq6rbAS7kLyxP5tj 50aob2dpVHhgmHdoE9LrAgft46kAteQH0u20dVmWOXNd76SQCmuGq0ygZQrP10YFFulxyu /qBwgM/QVkALrmRL+BjjJvZRX8irP6Tqn07c/GO5qIfUgWd74BWRs6KIHsrquTbtL84IH6 +M3rrImgxsn11U5KirO7h0p+JsOWwXjhPDlffX4TftaAXSN1Xiplo1xF1UMXlQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1607629343; 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=KtzFp0nR+dJW1v891+1wc4D+KUTADWJVxpq6j1ykdfo=; b=YlMcwWy3vQ5LbjypUKpYuIGaMi15XbC955aXBdrVoJspoFoOrPcJRpjqt+rHhF7aRCDnxi VzPUfEGKZfuiRjBQ== Date: Thu, 10 Dec 2020 20:25:43 +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 07/30] genirq: Make kstat_irqs() static References: <20201210192536.118432146@linutronix.de> MIME-Version: 1.0 Content-transfer-encoding: 8-bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org No more users outside the core code. Signed-off-by: Thomas Gleixner --- include/linux/kernel_stat.h | 1 - kernel/irq/irqdesc.c | 19 ++++++------------- 2 files changed, 6 insertions(+), 14 deletions(-) --- a/include/linux/kernel_stat.h +++ b/include/linux/kernel_stat.h @@ -67,7 +67,6 @@ static inline unsigned int kstat_softirq /* * Number of interrupts per specific IRQ source, since bootup */ -extern unsigned int kstat_irqs(unsigned int irq); extern unsigned int kstat_irqs_usr(unsigned int irq); /* --- a/kernel/irq/irqdesc.c +++ b/kernel/irq/irqdesc.c @@ -924,15 +924,7 @@ static bool irq_is_nmi(struct irq_desc * return desc->istate & IRQS_NMI; } -/** - * kstat_irqs - Get the statistics for an interrupt - * @irq: The interrupt number - * - * Returns the sum of interrupt counts on all cpus since boot for - * @irq. The caller must ensure that the interrupt is not removed - * concurrently. - */ -unsigned int kstat_irqs(unsigned int irq) +static unsigned int kstat_irqs(unsigned int irq) { struct irq_desc *desc = irq_to_desc(irq); unsigned int sum = 0; @@ -951,13 +943,14 @@ unsigned int kstat_irqs(unsigned int irq } /** - * kstat_irqs_usr - Get the statistics for an interrupt + * kstat_irqs_usr - Get the statistics for an interrupt from thread context * @irq: The interrupt number * * Returns the sum of interrupt counts on all cpus since boot for @irq. - * Contrary to kstat_irqs() this can be called from any context. - * It uses rcu since a concurrent removal of an interrupt descriptor is - * observing an rcu grace period before delayed_free_desc()/irq_kobj_release(). + * + * It uses rcu to protect the access since a concurrent removal of an + * interrupt descriptor is observing an rcu grace period before + * delayed_free_desc()/irq_kobj_release(). */ unsigned int kstat_irqs_usr(unsigned int irq) {