From patchwork Sat Apr 6 11:17:57 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jisheng Zhang X-Patchwork-Id: 13619781 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 08E61CD1284 for ; Sat, 6 Apr 2024 11:31:37 +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: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=TYsMbVAfvcHzdp9IMQJPETr5DhkaHM26Hx2g83nLVZ4=; b=bKen9y3Nsg3O3g xDkyis4B4jZXnNj/Q/cKw9yEpJZ2d3Tn1KdcxwhWTGHrxaYt3q+Xc+kkAgR07bAzmJfAjsgUsZhF8 SwwyYfaYgEh5PnZ5fCxUMRzNA6uXLDNtYxYK3Oy21gNlJHno9unM3uPuBPZPnFWnqgqkNO4JZRb6Q XbvaEyXd3gE+lbKKAyfd98NkyFjA4jv6NxS4GFO/rNS3onY5d0Ci9X6RviP/gSrA8FaUTP/4pUIG3 xm8XxMV+g7AA33bPkB/np7uXp7vmbFc1Ak6Quzv0byXMNd6jtBQe8Ln3EEUpcl7PAUyTWTshHUNaA LfOoStmWJmyPQvSZczvw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rt4Gi-0000000AD1A-0Mni; Sat, 06 Apr 2024 11:31:32 +0000 Received: from sin.source.kernel.org ([2604:1380:40e1:4800::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rt4Gd-0000000ACxv-0KFl for linux-riscv@lists.infradead.org; Sat, 06 Apr 2024 11:31:28 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id 76982CE19BE; Sat, 6 Apr 2024 11:31:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E4331C433F1; Sat, 6 Apr 2024 11:31:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1712403084; bh=QNz4CJCFePste/7DhKkLbFCEPMnrk6GSUJBGB1Aj74U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=A8XjQBe/E5HTHforMou7F0rT2W0G3OjrHdYJ6K+oat6W4FF6vVUP9NIUAIqT9EJUR uqenOb2f/JATM2VxEjKOCIq8oMSyy1DPKELKFX5K1256zGXVDsS7f6K/qDevPWKkSl 7WivOFgVG7kANEROaGzXdC7LTSYVQ6TqzqyHHwsSr1Kirr/Vs5s0ObmhnhS+EKwuVR bd2GGlIvffrXvgNc33owMD0XRJ6F6Y1lohtulMHUIG0PRuAq5pbKNCeDJHiDO+XY4+ xPgDLTi21AlyVDJbdJw3XmX4cYBBD/Qndb5zMUqu+n3H1GYqblgHIG97b0S4QaQdGP N3cZKEBv//cLA== From: Jisheng Zhang To: Daniel Lezcano , Thomas Gleixner , Paul Walmsley , Palmer Dabbelt , Albert Ou , Samuel Holland Cc: linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [PATCH v2 3/3] clocksource/drivers/timer-clint: Add set_state_oneshot_stopped Date: Sat, 6 Apr 2024 19:17:57 +0800 Message-ID: <20240406111757.1597-4-jszhang@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240406111757.1597-1-jszhang@kernel.org> References: <20240406111757.1597-1-jszhang@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240406_043127_441462_00EADAD0 X-CRM114-Status: UNSURE ( 9.28 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org To avoid spurious timer interrupts when KTIME_MAX is used, we need to configure set_state_oneshot_stopped(). Although implementing this is optional, it still affects things like power management for the extra timer interrupt. Check commit 8fff52fd5093 ("clockevents: Introduce CLOCK_EVT_STATE_ONESHOT_STOPPED state") for more information. Signed-off-by: Jisheng Zhang --- drivers/clocksource/timer-clint.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/clocksource/timer-clint.c b/drivers/clocksource/timer-clint.c index 1c17eff9861e..f468fa8bf5f0 100644 --- a/drivers/clocksource/timer-clint.c +++ b/drivers/clocksource/timer-clint.c @@ -134,6 +134,7 @@ static DEFINE_PER_CPU(struct clock_event_device, clint_clock_event) = { .rating = 100, .set_next_event = clint_clock_next_event, .set_state_shutdown = clint_clock_shutdown, + .set_state_oneshot_stopped = clint_clock_shutdown, }; static int clint_timer_starting_cpu(unsigned int cpu)