From patchwork Thu Dec 10 19:25:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 11966019 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=-15.8 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 autolearn=ham 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 CA27AC4167B for ; Thu, 10 Dec 2020 19:42:40 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 72CCD23DC4 for ; Thu, 10 Dec 2020 19:42:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 72CCD23DC4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linutronix.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.49699.87892 (Exim 4.92) (envelope-from ) id 1knRpc-0007VO-HW; Thu, 10 Dec 2020 19:42:28 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 49699.87892; Thu, 10 Dec 2020 19:42:28 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1knRpc-0007VD-Dm; Thu, 10 Dec 2020 19:42:28 +0000 Received: by outflank-mailman (input) for mailman id 49699; Thu, 10 Dec 2020 19:42:27 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1knRpb-0007NY-HA for xen-devel@lists.xenproject.org; Thu, 10 Dec 2020 19:42:27 +0000 Received: from galois.linutronix.de (unknown [193.142.43.55]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 69ccdec6-8894-415f-87fd-d3c42a288a22; Thu, 10 Dec 2020 19:42:18 +0000 (UTC) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 69ccdec6-8894-415f-87fd-d3c42a288a22 Message-Id: <20201210194042.703779349@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1607629337; 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=xNUoZoBVroF7IJy3X8hhV7V+S/ANMxwK+r48iZvHH7k=; b=SuZCyt4zlNSkg7Jh6xjd5t+bljnkIDhiuE1rhn/qKeMG+ite6vJEiEbNofXy6Jc8tYg+0b IECvv2LjnWcGzCS6R2c2tg4sgQpGcjXByKLBZPL7Xs4OwNUUaKF820w3Ic1JKPFWbxYaV/ zQxlwp4rnzD+WzTiaw91J+4L7iQQ+SR32KSqZT854CLAJKIIUHqBcwUh01vq4gYJysHS9U 2YuIdbPutXAYf6qxYXI8k/N2s6EcL8OojQbYBV3yqFeMwoY5o0cLfzqE9P8/gw+P+igDVq lKj3W3wk7xu1ziy9h34ybqOITt3G9Oy0XdV3S2Ut5Fvm8NWwxziMLNP2XRk3vg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1607629337; 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=xNUoZoBVroF7IJy3X8hhV7V+S/ANMxwK+r48iZvHH7k=; b=VHoSRskFC2dXgfT8CV99ZHE5BpRPUfLU6nfE7o3PMPrsIEKWqDmtgbLpWFRMlRZjjTeINe qsFjW8cMZ9WikxCw== Date: Thu, 10 Dec 2020 20:25:38 +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 02/30] genirq: Move status flag checks to core References: <20201210192536.118432146@linutronix.de> MIME-Version: 1.0 Content-transfer-encoding: 8-bit These checks are used by modules and prevent the removal of the export of irq_to_desc(). Move the accessor into the core. Signed-off-by: Thomas Gleixner --- include/linux/irqdesc.h | 17 +++++------------ kernel/irq/manage.c | 17 +++++++++++++++++ 2 files changed, 22 insertions(+), 12 deletions(-) --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -223,28 +223,21 @@ irq_set_chip_handler_name_locked(struct data->chip = chip; } +bool irq_check_status_bit(unsigned int irq, unsigned int bitmask); + static inline bool irq_balancing_disabled(unsigned int irq) { - struct irq_desc *desc; - - desc = irq_to_desc(irq); - return desc->status_use_accessors & IRQ_NO_BALANCING_MASK; + return irq_check_status_bit(irq, IRQ_NO_BALANCING_MASK); } static inline bool irq_is_percpu(unsigned int irq) { - struct irq_desc *desc; - - desc = irq_to_desc(irq); - return desc->status_use_accessors & IRQ_PER_CPU; + return irq_check_status_bit(irq, IRQ_PER_CPU); } static inline bool irq_is_percpu_devid(unsigned int irq) { - struct irq_desc *desc; - - desc = irq_to_desc(irq); - return desc->status_use_accessors & IRQ_PER_CPU_DEVID; + return irq_check_status_bit(irq, IRQ_PER_CPU_DEVID); } static inline void --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -2769,3 +2769,23 @@ bool irq_has_action(unsigned int irq) return res; } EXPORT_SYMBOL_GPL(irq_has_action); + +/** + * irq_check_status_bit - Check whether bits in the irq descriptor status are set + * @irq: The linux irq number + * @bitmask: The bitmask to evaluate + * + * Returns: True if one of the bits in @bitmask is set + */ +bool irq_check_status_bit(unsigned int irq, unsigned int bitmask) +{ + struct irq_desc *desc; + bool res = false; + + rcu_read_lock(); + desc = irq_to_desc(irq); + if (desc) + res = !!(desc->status_use_accessors & bitmask); + rcu_read_unlock(); + return res; +}