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 6356FC433F5 for ; Fri, 3 Dec 2021 21:46:04 +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=lIxjR3FPLX688QMW1cWlK5lmUuTks0cMHajAmnAY3e0=; b=1KyyFwapfFwSwDAcTc3buOPIO1 aKz5YbubknwAUt+RBZTQELKlg+EPzGXpXDtM3SPCuiuqAJixQwGPwVQKvCNj9HluVKXWI0fZuaiIV OH25MRiCVMFrpBF6/AMCsUqoT5gWcNgPLuqSj46REo606Z4zJJZzl/7+Cql+ik1t7lECWcjeZD9ir YlxBkVH9W1ErMAuwWQFnGYp0zYKGE5Ytylw1/VYF8YkTgLZYRoFv7VLYijrJ3z8j/GCqyQdTn0O1Y xweSVaXnh0mbHvjcOaKqJTDD26B76ZlNi+OHulUffAsWnUsQ6KWD8D02Sbe0e8uJtpmcNByjNpM/m FCjIu4uQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mtGNR-00H3mc-UQ; Fri, 03 Dec 2021 21:45:57 +0000 Received: from mail-pj1-x102c.google.com ([2607:f8b0:4864:20::102c]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mtGNP-00H3l1-0O for linux-nvme@lists.infradead.org; Fri, 03 Dec 2021 21:45:56 +0000 Received: by mail-pj1-x102c.google.com with SMTP id w33-20020a17090a6ba400b001a722a06212so5961397pjj.0 for ; Fri, 03 Dec 2021 13:45:54 -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=lIxjR3FPLX688QMW1cWlK5lmUuTks0cMHajAmnAY3e0=; b=2E2kBEtHQXlrmkm7xX1wGtqNhI27jIRUYTlp3ioRfomf96lCS7vS6Oda8KnhMPjR+q 5OQ3zVxIT3ndZbkNsCD5TB5U5EMl/AfhoeUJ9z7GTogTz3zoPEAWm0AHcwLPPmhrqv6L INbHl10vLhIzAUu9iLxnfNGdLFCn8yiFxMnuP7ZcwAhwQvzMRwgxpR9GQadzMooUpBXU qPqGugKqb1XRy2+/QaPNzEWW4rvPI3p5Y9XpEp9H/NgXmBNsn5gl8SczSmKNej+xvcja P7dAiISqx4rdgPmOSMGp+wjjDmSxkGgF7ggO2Z4LuuET5d0jGjhJZVPvFbctew4XxhXs p6GA== 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=lIxjR3FPLX688QMW1cWlK5lmUuTks0cMHajAmnAY3e0=; b=Ef2yMT7YLxotaBCBdy1u1qGPjrIHRQKcYFmawLePucimpqKAQK8fnbI37KA7L7sSRX YtRVGrNP8PTpA8oDcuS9+1UFC7HNRa+cp5i109AFnYyfNeG5n0C6RHOSOh48Vc82zJ5S tCyS7gyx9krZG+IRoagSnYUGhsOGIzS1qZA2WfPUYiHgRAF11Q2BpWDcjSLDYUyrcmOI UfXGusIRqAQUfoczJUzL4LapN10GJGdxYRa95GJNPQCggGw1wTYdfQDKcTAnb5WOPB/F OnG2nHmvNF+qCNeALJV/n9jr5G20uANDj1qHw9ToecbYT0jRA5wN9wkerzY0IQ6buM26 E0og== X-Gm-Message-State: AOAM533aHRpTVqiHAnqAbX6DgmTfvuSuARZWTFV1sUXllXRx5ik5m5fX ILRTPtWivJcdMaE81wPJfr5Lb//kahTI4I9s X-Google-Smtp-Source: ABdhPJxUu/Evwa67mjOdElNgoK5Q8D7SfYw92iHnHsGeQr7go2JhNqDUUTLx29dne4Ti2IFMTiDiLg== X-Received: by 2002:a17:90a:5b:: with SMTP id 27mr17302729pjb.148.1638567953400; Fri, 03 Dec 2021 13:45:53 -0800 (PST) Received: from localhost.localdomain ([66.219.217.159]) by smtp.gmail.com with ESMTPSA id f4sm4436225pfj.61.2021.12.03.13.45.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Dec 2021 13:45:52 -0800 (PST) From: Jens Axboe To: linux-block@vger.kernel.org, linux-nvme@lists.infradead.org Subject: [PATCHSET v2 0/4] Add support for list issue Date: Fri, 3 Dec 2021 14:45:40 -0700 Message-Id: <20211203214544.343460-1-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-20211203_134555_123205_EC3D35F1 X-CRM114-Status: UNSURE ( 8.12 ) 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. Changes since v1: - Addressed review comments - Rebase on top of Ming's hctx lock change - Clean ups - Bypass for shared tags -- Jens Axboe