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 X-Spam-Level: X-Spam-Status: No, score=-15.1 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLACK,USER_AGENT_GIT 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 A4042C56201 for ; Tue, 24 Nov 2020 06:22:10 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 9FAA720678 for ; Tue, 24 Nov 2020 06:22:09 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9FAA720678 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ozlabs.ru Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4CgDSv20r0zDqT6 for ; Tue, 24 Nov 2020 17:22:07 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.ru (client-ip=107.174.27.60; helo=ozlabs.ru; envelope-from=aik@ozlabs.ru; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ozlabs.ru Received: from ozlabs.ru (ozlabs.ru [107.174.27.60]) by lists.ozlabs.org (Postfix) with ESMTP id 4CgDN35kLGzDq8g for ; Tue, 24 Nov 2020 17:17:55 +1100 (AEDT) Received: from fstn1-p1.ozlabs.ibm.com (localhost [IPv6:::1]) by ozlabs.ru (Postfix) with ESMTP id 82CBCAE8022C; Tue, 24 Nov 2020 01:17:40 -0500 (EST) From: Alexey Kardashevskiy To: linux-kernel@vger.kernel.org Subject: [PATCH kernel v4 1/8] genirq/ipi: Simplify irq_reserve_ipi Date: Tue, 24 Nov 2020 17:17:13 +1100 Message-Id: <20201124061720.86766-2-aik@ozlabs.ru> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201124061720.86766-1-aik@ozlabs.ru> References: <20201124061720.86766-1-aik@ozlabs.ru> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alexey Kardashevskiy , Marc Zyngier , x86@kernel.org, linux-gpio@vger.kernel.org, Oliver O'Halloran , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Frederic Barrat , Thomas Gleixner , =?UTF-8?q?Michal=20Such=C3=A1nek?= , linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" __irq_domain_alloc_irqs() can already handle virq==-1 and free descriptors if it failed allocating hardware interrupts so let's skip this extra step. Signed-off-by: Alexey Kardashevskiy --- kernel/irq/ipi.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) diff --git a/kernel/irq/ipi.c b/kernel/irq/ipi.c index 43e3d1be622c..1b2807318ea9 100644 --- a/kernel/irq/ipi.c +++ b/kernel/irq/ipi.c @@ -75,18 +75,12 @@ int irq_reserve_ipi(struct irq_domain *domain, } } - virq = irq_domain_alloc_descs(-1, nr_irqs, 0, NUMA_NO_NODE, NULL); - if (virq <= 0) { - pr_warn("Can't reserve IPI, failed to alloc descs\n"); - return -ENOMEM; - } - - virq = __irq_domain_alloc_irqs(domain, virq, nr_irqs, NUMA_NO_NODE, - (void *) dest, true, NULL); + virq = __irq_domain_alloc_irqs(domain, -1, nr_irqs, NUMA_NO_NODE, + (void *) dest, false, NULL); if (virq <= 0) { pr_warn("Can't reserve IPI, failed to alloc hw irqs\n"); - goto free_descs; + return -EBUSY; } for (i = 0; i < nr_irqs; i++) { @@ -96,10 +90,6 @@ int irq_reserve_ipi(struct irq_domain *domain, irq_set_status_flags(virq + i, IRQ_NO_BALANCING); } return virq; - -free_descs: - irq_free_descs(virq, nr_irqs); - return -EBUSY; } /** -- 2.17.1