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 86454F459F3 for ; Fri, 10 Apr 2026 15:14:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: Message-ID:Date:References:In-Reply-To:Subject:Cc:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Z6eHisBYg7qyonBevv/veresEfTDm6GmxPzgogzf6FU=; b=utk9BnBMctdmSZYU56Ni2vuZnY wZo/XpHcy98bSs6qTugGWd8eTX1aEULta5AGyZyWBV6PsQ++TADvr17lLXvZ5lUG9wij+dDW/HOpC l/M6rKnUVFmndmU3EJy3ZGFlw2KvF04EOn6PXaBS2WP2ZtzS94P2aKA1Kjvi5Wi/WZRFoKTdMNaRP 98Ez8lA641Xvn2AdVhIyJInoKoByrRRE3ghToKZXZht+38JthAk1oy8t9H6wdAGoh2efTuONO1oe8 3nlwa5ICwM4Ln87HwfHwQUcuWJRgDHgfGyWJ3R/x8kDFA2XL18MyqozOzFr9cbo9hd9DSpAnYviLG +7GDJ0Gg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wBDYd-0000000CQuM-0lXx; Fri, 10 Apr 2026 15:14:07 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wBDYa-0000000CQtn-3cvw; Fri, 10 Apr 2026 15:14:05 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 1B0CF43DD6; Fri, 10 Apr 2026 15:14:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1CA7DC19421; Fri, 10 Apr 2026 15:14:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775834044; bh=ZX44VkA/oGGdYrqGVtHG3BQ09eU0s5TAD8UsmKEvOJ4=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=DQRfv3hPFw/TKa/ZakF0C/CvhlLPEsVqQv+2r4uwxdObvOGMMWr2s346gixb/wzYP kH3jI1VGrMbPCg8bbeliLsWsv0WorMVV9pr65pzZbqt3ANfLMAZ3WpCzHo7EbPC0aw sFqvG5W5Zh5Zl9hqpd/S10vk3SPDt4AvvXdP7MWFAVnJ1yy95RtrFN5r3P/n0YzraC K1ddeqgVvP6yW3cqrHOPD+5bbhJuKzxhUEtkBkREvZCz2D1PF358eBsZtX1OaLotF8 mIrAdKqmlNIgawRmNAF5mT5jG8tytmCXBJPCuscrYjON8tMw7soKn19X1CoLhvhPBR sIA/Sxe0F1CKA== From: Thomas Gleixner To: Baolu Lu , LKML Cc: baolu.lu@linux.intel.com, x86@kernel.org, iommu@lists.linux.dev, Arnd Bergmann , Michael Grzeschik , netdev@vger.kernel.org, linux-wireless@vger.kernel.org, Herbert Xu , linux-crypto@vger.kernel.org, Vlastimil Babka , linux-mm@kvack.org, David Woodhouse , Bernie Thompson , linux-fbdev@vger.kernel.org, Theodore Tso , linux-ext4@vger.kernel.org, Andrew Morton , Uladzislau Rezki , Marco Elver , Dmitry Vyukov , kasan-dev@googlegroups.com, Andrey Ryabinin , Thomas Sailer , linux-hams@vger.kernel.org, "Jason A. Donenfeld" , Richard Henderson , linux-alpha@vger.kernel.org, Russell King , linux-arm-kernel@lists.infradead.org, Catalin Marinas , Huacai Chen , loongarch@lists.linux.dev, Geert Uytterhoeven , linux-m68k@lists.linux-m68k.org, Dinh Nguyen , Jonas Bonn , linux-openrisc@vger.kernel.org, Helge Deller , linux-parisc@vger.kernel.org, Michael Ellerman , linuxppc-dev@lists.ozlabs.org, Paul Walmsley , linux-riscv@lists.infradead.org, Heiko Carstens , linux-s390@vger.kernel.org, "David S. Miller" , sparclinux@vger.kernel.org Subject: Re: [patch 09/38] iommu/vt-d: Use sched_clock() instead of get_cycles() In-Reply-To: <9db9515b-08e8-47bd-aced-206ac183195a@linux.intel.com> References: <20260410120044.031381086@kernel.org> <20260410120318.187521447@kernel.org> <9db9515b-08e8-47bd-aced-206ac183195a@linux.intel.com> Date: Fri, 10 Apr 2026 17:14:00 +0200 Message-ID: <87y0iuzw3r.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260410_081404_920940_4105F41D X-CRM114-Status: UNSURE ( 9.06 ) X-CRM114-Notice: Please train this message. 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Apr 10 2026 at 21:45, Baolu Lu wrote: > On 4/10/2026 8:19 PM, Thomas Gleixner wrote: >> Calculating the timeout from get_cycles() is a historical leftover without >> any functional requirement. >> >> Use ktime_get() instead. > > The subject line says "Use sched_clock() ...", but the implementation > actually uses ktime_get(). Is it a typo or anything I misunderstood? Indeed. Leftover from an earlier version. Thanks, tglx