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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4AE27C54EBE for ; Mon, 16 Jan 2023 13:52:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231475AbjAPNwW (ORCPT ); Mon, 16 Jan 2023 08:52:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60360 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231483AbjAPNuo (ORCPT ); Mon, 16 Jan 2023 08:50:44 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 52D3121A0B; Mon, 16 Jan 2023 05:50:43 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E721860FD7; Mon, 16 Jan 2023 13:50:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EF0FDC43327; Mon, 16 Jan 2023 13:50:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1673877041; bh=slBlVmKKVxqS1O4HHOigyS/8bTSWQiItHYPLEGcLTcE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pJd1R8RZ22PoYyJifHmA3Qyg04TRQkkwg2rMoVTwmCTyo2JYgb+wjXmvpMXI6LKmp 8QPvyr18NqkhfWcDkBEAXzV5ubCPgzvqE92L/hLlCPFj+vA7xyLySbNdFu55QQoM0A dPuThfItC/7+mjGViTvnvMiPYZsS13BKRrrG1B5a4i+h7PPb7i4vw775G9IY3kf+P2 m7KzhpcF+Ro+ClGx+574wnX9lcu8w2vXy88b92XRLd/tdsmFpA0gXHot55GY0inQu1 ttUl2/uY643dpBoOLfSfaZ+z/d/NfF+klcuEjnJD4eotkAmjbUTt0ANWrNARs2HIfW TVHVqSAePmJhQ== Received: from johan by xi.lan with local (Exim 4.94.2) (envelope-from ) id 1pHPt6-0003vA-C5; Mon, 16 Jan 2023 14:51:00 +0100 From: Johan Hovold To: Marc Zyngier , Thomas Gleixner Cc: x86@kernel.org, platform-driver-x86@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Hsin-Yi Wang , Mark-PK Tsai Subject: [PATCH v4 10/19] irqdomain: Clean up irq_domain_push/pop_irq() Date: Mon, 16 Jan 2023 14:50:35 +0100 Message-Id: <20230116135044.14998-11-johan+linaro@kernel.org> X-Mailer: git-send-email 2.38.2 In-Reply-To: <20230116135044.14998-1-johan+linaro@kernel.org> References: <20230116135044.14998-1-johan+linaro@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The irq_domain_push_irq() interface is used to add a new (outmost) level to a hierarchical domain after IRQs have been allocated. Possibly due to differing mental images of hierarchical domains, the names used for the irq_data variables make these functions much harder to understand than what they need to be. Rename the struct irq_data pointer to the data embedded in the descriptor as simply 'irq_data' and refer to the data allocated by this interface as 'parent_irq_data' so that the names reflect how hierarchical domains are implemented. Reviewed-by: Philippe Mathieu-Daudé Tested-by: Hsin-Yi Wang Tested-by: Mark-PK Tsai Signed-off-by: Johan Hovold --- kernel/irq/irqdomain.c | 65 +++++++++++++++++++++--------------------- 1 file changed, 32 insertions(+), 33 deletions(-) diff --git a/kernel/irq/irqdomain.c b/kernel/irq/irqdomain.c index 7232947eee3e..6f2b8a1248e1 100644 --- a/kernel/irq/irqdomain.c +++ b/kernel/irq/irqdomain.c @@ -1571,8 +1571,8 @@ static void irq_domain_fix_revmap(struct irq_data *d) */ int irq_domain_push_irq(struct irq_domain *domain, int virq, void *arg) { - struct irq_data *child_irq_data; - struct irq_data *root_irq_data = irq_get_irq_data(virq); + struct irq_data *irq_data = irq_get_irq_data(virq); + struct irq_data *parent_irq_data; struct irq_desc *desc; int rv = 0; @@ -1597,45 +1597,44 @@ int irq_domain_push_irq(struct irq_domain *domain, int virq, void *arg) if (WARN_ON(!irq_domain_is_hierarchy(domain))) return -EINVAL; - if (!root_irq_data) + if (!irq_data) return -EINVAL; - if (domain->parent != root_irq_data->domain) + if (domain->parent != irq_data->domain) return -EINVAL; - child_irq_data = kzalloc_node(sizeof(*child_irq_data), GFP_KERNEL, - irq_data_get_node(root_irq_data)); - if (!child_irq_data) + parent_irq_data = kzalloc_node(sizeof(*parent_irq_data), GFP_KERNEL, + irq_data_get_node(irq_data)); + if (!parent_irq_data) return -ENOMEM; mutex_lock(&irq_domain_mutex); /* Copy the original irq_data. */ - *child_irq_data = *root_irq_data; + *parent_irq_data = *irq_data; /* - * Overwrite the root_irq_data, which is embedded in struct - * irq_desc, with values for this domain. + * Overwrite the irq_data, which is embedded in struct irq_desc, with + * values for this domain. */ - root_irq_data->parent_data = child_irq_data; - root_irq_data->domain = domain; - root_irq_data->mask = 0; - root_irq_data->hwirq = 0; - root_irq_data->chip = NULL; - root_irq_data->chip_data = NULL; + irq_data->parent_data = parent_irq_data; + irq_data->domain = domain; + irq_data->mask = 0; + irq_data->hwirq = 0; + irq_data->chip = NULL; + irq_data->chip_data = NULL; /* May (probably does) set hwirq, chip, etc. */ rv = irq_domain_alloc_irqs_hierarchy(domain, virq, 1, arg); if (rv) { /* Restore the original irq_data. */ - *root_irq_data = *child_irq_data; - kfree(child_irq_data); + *irq_data = *parent_irq_data; + kfree(parent_irq_data); goto error; } - irq_domain_fix_revmap(child_irq_data); - irq_domain_set_mapping(domain, root_irq_data->hwirq, root_irq_data); - + irq_domain_fix_revmap(parent_irq_data); + irq_domain_set_mapping(domain, irq_data->hwirq, irq_data); error: mutex_unlock(&irq_domain_mutex); @@ -1653,8 +1652,8 @@ EXPORT_SYMBOL_GPL(irq_domain_push_irq); */ int irq_domain_pop_irq(struct irq_domain *domain, int virq) { - struct irq_data *root_irq_data = irq_get_irq_data(virq); - struct irq_data *child_irq_data; + struct irq_data *irq_data = irq_get_irq_data(virq); + struct irq_data *parent_irq_data; struct irq_data *tmp_irq_data; struct irq_desc *desc; @@ -1676,37 +1675,37 @@ int irq_domain_pop_irq(struct irq_domain *domain, int virq) if (domain == NULL) return -EINVAL; - if (!root_irq_data) + if (!irq_data) return -EINVAL; tmp_irq_data = irq_domain_get_irq_data(domain, virq); /* We can only "pop" if this domain is at the top of the list */ - if (WARN_ON(root_irq_data != tmp_irq_data)) + if (WARN_ON(irq_data != tmp_irq_data)) return -EINVAL; - if (WARN_ON(root_irq_data->domain != domain)) + if (WARN_ON(irq_data->domain != domain)) return -EINVAL; - child_irq_data = root_irq_data->parent_data; - if (WARN_ON(!child_irq_data)) + parent_irq_data = irq_data->parent_data; + if (WARN_ON(!parent_irq_data)) return -EINVAL; mutex_lock(&irq_domain_mutex); - root_irq_data->parent_data = NULL; + irq_data->parent_data = NULL; - irq_domain_clear_mapping(domain, root_irq_data->hwirq); + irq_domain_clear_mapping(domain, irq_data->hwirq); irq_domain_free_irqs_hierarchy(domain, virq, 1); /* Restore the original irq_data. */ - *root_irq_data = *child_irq_data; + *irq_data = *parent_irq_data; - irq_domain_fix_revmap(root_irq_data); + irq_domain_fix_revmap(irq_data); mutex_unlock(&irq_domain_mutex); - kfree(child_irq_data); + kfree(parent_irq_data); return 0; } -- 2.38.2 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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9170CC54EBE for ; Mon, 16 Jan 2023 13:55:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: 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Thomas Gleixner Cc: x86@kernel.org, platform-driver-x86@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Hsin-Yi Wang , Mark-PK Tsai Subject: [PATCH v4 10/19] irqdomain: Clean up irq_domain_push/pop_irq() Date: Mon, 16 Jan 2023 14:50:35 +0100 Message-Id: <20230116135044.14998-11-johan+linaro@kernel.org> X-Mailer: git-send-email 2.38.2 In-Reply-To: <20230116135044.14998-1-johan+linaro@kernel.org> References: <20230116135044.14998-1-johan+linaro@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230116_135038_913047_6D2CBC45 X-CRM114-Status: GOOD ( 20.18 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" 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