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 65903C55ABA for ; Tue, 4 Aug 2026 21:48:40 +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-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=hnD1aY9umXKgJ4BX/UkaEqEF7nCIFCkN3FqzmwMp/sk=; b=ybQkqguevqLeIQG6H/7nsTu1JA poAamyNokR260BZLAindenWzea5yAfOOE+4k5w1AaGgVdVvz+DDa9qecg+XGgDbBCcvCuawQtDw1j uNHU3jlj5huBtJpyujyp44Vo7F6mJy59tFyixsrx5Mtsk5+s9znVPzr9f/Km2VzgdvquL8AexUK/y MMZbj7wMuLaysEeBMNvl6hRt0takCNFIIlD9UUzV4ZOT6EvJGL76CwjGTSFEvswSxM3jkbQGMsDub wdRldc/Cit7AJRlR07fXoN0uwn4Rjtvu2easaHnIAVgqVTuarfRidzb3LAk3lKTglOhpDKcPQukzh g8gr6HQw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wrMzt-00000002pv1-1ONF; Tue, 04 Aug 2026 21:48:29 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wrMzr-00000002puv-42ly for linux-arm-kernel@lists.infradead.org; Tue, 04 Aug 2026 21:48:28 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 1C1B740C42; Tue, 4 Aug 2026 21:48:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4A7E71F000E9; Tue, 4 Aug 2026 21:48:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785880107; bh=hnD1aY9umXKgJ4BX/UkaEqEF7nCIFCkN3FqzmwMp/sk=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=FWmZBXqcB3Idi01HEF+CZf/fEEpvgebfW3IQU5I+fqVB4HQp3R3crRPVxd6JfW9KY EWWbYdFrbBWv/h6rv8zlKwwfM8yq/yejMkfknY0dOrzIuPHpXDBx7YSZE4sDMG3xum 1hWBMMWTopZ24hodB4HHFOoa32B54AVhKSd8jUMXI5tR7h4TRBSTYq38+qKSDUoDJm oLU42Fd3T8I8X81WMlz0NGHvHqImCed/IKBwnNOiK5VcPNTZRbGZCBcHrR8rZsvFgS vwtRT5pxsfRCV+v+1bJw7BRo+WHw4hOmOnLo1FSbgyj9S5PnmtGOfe5/HrEzSM+ybp Pp1W+rF9kGXRw== Message-ID: <4baf6edb-c84b-4da9-b905-4d40d4bf5fdc@kernel.org> Date: Tue, 4 Aug 2026 23:48:19 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC v2 PATCH 0/16] Optimize this_cpu_*() ops for non-x86 (ARM64 for this series) To: "Christoph Lameter (Ampere)" , "Lorenzo Stoakes (ARM)" Cc: Linus Torvalds , Mark Rutland , Yang Shi , Ryan Roberts , dennis@kernel.org, tj@kernel.org, urezki@gmail.com, catalin.marinas@arm.com, will@kernel.org, akpm@linux-foundation.org, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Jason Gunthorpe References: <0344c559-1959-4531-9265-d5a5180eb7cd@arm.com> <25d1e09b-53e4-7cd5-87db-b58437e4e690@gentwo.org> <4887267b-dc26-4c33-96ca-8dff054a0d1f@kernel.org> <8d6119c7-2216-fcdd-d0b9-cc60ccc8caf3@gentwo.org> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit 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 > These are operations that are key to the performance in critical parts of > memory management and this code is replicated by being inlined thousands > of times in the kernel. Cool, then it is easy to show the difference by running micro + macro benchmarks. -- Cheers, David