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 0EEE5C433F5 for ; Wed, 15 Dec 2021 16:45:36 +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: MIME-Version:Message-Id:Date:Subject:To:From:Reply-To:Cc:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=+S76o+lU5f8Y6L550JpPm+xHI7UPiFEDOIxOuBfHgB0=; b=tR+q1vfNczZ90Br/FaOgfdG1aa Vu51Y9ejC9uOHdUqU5wZcY7QxaHzo68E5Gke/vR4gxFqUY2CxyJalz6VUFHZYu9aWU0qaCr1CC+IL kAvPAGCdv/iJW+kedR02BCoXlRp4eo7wYL1CnrcUjt5BBMSGeK/jTnInR9nP2Pl8q756tXDml+x7s 0dbtEaL7FjqP1s153Kqb3ca3RLU6zNTtHLR5YY0cAfHDWFvtaTQKIPF7SPykL5klpS4n0V1uXR9KI Rg05a7g8H+zxbjF+mHloOPpLMzaT5/4s1ZyS/HcTLTlzoiRvb/4R4GK99QSEaG/1nbJkjFzwGcwvd 3+TyRy/w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mxXPF-001pPa-Ru; Wed, 15 Dec 2021 16:45:30 +0000 Received: from mail-io1-xd2f.google.com ([2607:f8b0:4864:20::d2f]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mxX4r-001gpI-7U for linux-nvme@lists.infradead.org; Wed, 15 Dec 2021 16:24:26 +0000 Received: by mail-io1-xd2f.google.com with SMTP id z18so31057450iof.5 for ; Wed, 15 Dec 2021 08:24:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; h=from:to:subject:date:message-id:mime-version :content-transfer-encoding; bh=+S76o+lU5f8Y6L550JpPm+xHI7UPiFEDOIxOuBfHgB0=; b=eeoTCD/lXC4ZHgBvmLhuznfU5045cTL3rZBg0aucp9SwMeHfDr4LaOd6y7iDeiZGUv psVwuGV1538JFC9lVJJEFmIQVpQ/jWQko5AFv+GII/Vbr1DsSlG1QHMhnm1A7kpTa5ya uSZsePJed0yFhPR1AfQopDFeU+iVtafKjDFcQ2ZlW89tBQT1C3CEadtFwtZwqM956aSE tzzlzlq5OngmA+MEc0YZUfKnD6H6cwcy253tRlPjfxhUSxlpVy6RMeq8on+KbfM+gBj4 cgPhBTu6N+pMyxqy6RTEWqVGPIrBhAZxH2whW101yMpTYJx/KJe3Ktq3UWjfz0CbltrO TEYw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:subject:date:message-id:mime-version :content-transfer-encoding; bh=+S76o+lU5f8Y6L550JpPm+xHI7UPiFEDOIxOuBfHgB0=; b=EWPA6zpLviWn/4/+wYRCSV+bPz86jw4D1XCeUOj4/hmboPa5Fz2IpJwSw7/qgC4Qvo YqT7mUF+BdUqpdcsEybbUHxaSYXMpGFD5728jzWqM1qb7X6Jzht2iBAJFCO4eiD0hYSA plZ5f+rr73TBEkSatTubGIJhiT1WOu/HcTde4lFd5ZgeDyZnOj89dOe6X0IHqxxhmr8f pKhB+ksUaChSncMIsS1pkoxum9jjmLEzPWIgehu1ORXp+JhC6CPJBOrtW9HZrIZmTM9K 0fqLcTPgjzUplRPkxEkMujrB/O7G6D+WLETDiXno5tb2ZpY+ueK1GxETfgKxTbGa1F+1 4eUw== X-Gm-Message-State: AOAM530IMiJJaEMyI+8GrPLDJr7/UDnAut7qGULoxHdUBcYiQNG4dlWv Vo2l0PsF23MbIGMxVYiZy4MhW/2JXW2ctg== X-Google-Smtp-Source: ABdhPJxFcatts9sLXYdkAle2BfEi6ILJixpQxLDbxTgbcDO9VpviBfTNuiW4VHa7ldCY9PKRGgFbmg== X-Received: by 2002:a05:6638:140d:: with SMTP id k13mr5935052jad.37.1639585463015; Wed, 15 Dec 2021 08:24:23 -0800 (PST) Received: from x1.localdomain ([207.135.234.126]) by smtp.gmail.com with ESMTPSA id g1sm1153170ild.52.2021.12.15.08.24.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Dec 2021 08:24:22 -0800 (PST) From: Jens Axboe To: io-uring@vger.kernel.org, linux-nvme@lists.infradead.org Subject: [PATCHSET v3 0/4] Add support for list issue Date: Wed, 15 Dec 2021 09:24:17 -0700 Message-Id: <20211215162421.14896-1-axboe@kernel.dk> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211215_082425_330276_C9257FF7 X-CRM114-Status: UNSURE ( 7.10 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-nvme@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-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org Hi, With the support in 5.16-rc1 for allocating and completing batches of IO, the one missing piece is passing down a list of requests for issue. Drivers can take advantage of this by defining an mq_ops->queue_rqs() hook. This implements it for NVMe, allowing copy of multiple commands in one swoop. This is good for around a 500K IOPS/core improvement in my testing, which is around a 5-6% improvement in efficiency. No changes since v3 outside of a comment addition. Changes since v2: - Add comment on why shared tags are currently bypassed - Add reviewed-by's -- Jens Axboe