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Thu, 11 Jun 2020 06:14:49 +0000 From: Anup Patel To: Palmer Dabbelt , Paul Walmsley , Albert Ou , Daniel Lezcano , Thomas Gleixner , Jason Cooper , Marc Zyngier Cc: Atish Patra , Alistair Francis , Anup Patel , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Anup Patel , Palmer Dabbelt Subject: [PATCH v8 5/6] RISC-V: Remove do_IRQ() function Date: Thu, 11 Jun 2020 11:43:49 +0530 Message-Id: <20200611061350.434293-6-anup.patel@wdc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200611061350.434293-1-anup.patel@wdc.com> References: <20200611061350.434293-1-anup.patel@wdc.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: MA1PR01CA0077.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00::17) To DM6PR04MB6201.namprd04.prod.outlook.com (2603:10b6:5:127::32) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from wdc.com (122.182.246.89) by MA1PR01CA0077.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a00::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3088.18 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData: C1E34+hO20Yv9NggErbYH9IAXCIcZm96nGh/LogjXqXT1iYZ4rP0hxm88qZ88tQAg9xPkU5pigeZPwd9w3+EVbr0OXKxetlrZGiPUcl2DEaNgPkXSWWid4NXl6pLweTlx0hupGGobXq8+q04wO1WfghmfZeH0dRggm+9QdvnTti2QNd/oPwD26n5axdZgycI0SHO/1w6BJUFEN1tx7QAS0jd1sRT42tkPgUjISySAQB9OPgLowkWcbEBbmmBC0gskQoXLkS033nxgGdWgoAaOxl7gvjume/qiiLp6bVyvcO3Xtvjfr23ag1NU0hrdg2FoXoAu91DP1YtMwYudj8Wz+zQjQf2t+1aWAEjH8m1cvtp2WanX2ePFGXonduCm2qUj9SV+g8Ws3oIyydXnro8eEdTu7nPeJsX5ALvOsCvxN/C4vRQjxh1pxXsPMrEZEXmD5KWCS9GJz8S6tInZYAPUYgG1L5rIxheHX0QiJ/ZU8I= X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: 0e2dd7a9-8434-41c5-2c97-08d80dcebecd X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Jun 2020 06:14:49.4472 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: f+3BWMgMBxCiuvZGQrEwUgFqUQDhsV12wa8OTbjbHvEcGBlTVwzK1vYKs6LeGHXEFnuBIeAy1Z9nRTw26Wy8Vg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR04MB6332 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The only thing do_IRQ() does is call handle_arch_irq function pointer. We can very well call handle_arch_irq function pointer directly from assembly and remove do_IRQ() function hence this patch. Signed-off-by: Anup Patel Reviewed-by: Atish Patra --- arch/riscv/kernel/entry.S | 4 +++- arch/riscv/kernel/irq.c | 6 ------ 2 files changed, 3 insertions(+), 7 deletions(-) diff --git a/arch/riscv/kernel/entry.S b/arch/riscv/kernel/entry.S index 56d071b2c0a1..cae7e6d4c7ef 100644 --- a/arch/riscv/kernel/entry.S +++ b/arch/riscv/kernel/entry.S @@ -106,7 +106,9 @@ _save_context: /* Handle interrupts */ move a0, sp /* pt_regs */ - tail do_IRQ + la a1, handle_arch_irq + REG_L a1, (a1) + jr a1 1: /* * Exceptions run with interrupts enabled or disabled depending on the diff --git a/arch/riscv/kernel/irq.c b/arch/riscv/kernel/irq.c index eb8777642ce6..7207fa08d78f 100644 --- a/arch/riscv/kernel/irq.c +++ b/arch/riscv/kernel/irq.c @@ -16,12 +16,6 @@ int arch_show_interrupts(struct seq_file *p, int prec) return 0; } -asmlinkage __visible void __irq_entry do_IRQ(struct pt_regs *regs) -{ - if (handle_arch_irq) - handle_arch_irq(regs); -} - void __init init_IRQ(void) { irqchip_init(); -- 2.25.1