From patchwork Thu May 4 12:18:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Breno Leitao X-Patchwork-Id: 13231145 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0A547C7EE26 for ; Thu, 4 May 2023 12:19:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230402AbjEDMTI (ORCPT ); Thu, 4 May 2023 08:19:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49338 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230398AbjEDMTH (ORCPT ); Thu, 4 May 2023 08:19:07 -0400 Received: from mail-wm1-f51.google.com (mail-wm1-f51.google.com [209.85.128.51]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CE64665AC; Thu, 4 May 2023 05:19:06 -0700 (PDT) Received: by mail-wm1-f51.google.com with SMTP id 5b1f17b1804b1-3f4000ec74aso3206235e9.3; Thu, 04 May 2023 05:19:06 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683202745; x=1685794745; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=wSyb6givsMExpGuHktpWfu+gxOuU871A0uj9kukvqHo=; b=fQm+vNQ8MOl+Mi34U+NN9DrZkBQ+jbIkfsV415pPDbx/3mU7Gv41w3henCqYYepesg mxmeut48mkp/i+Fi3uK3gs+cQ/8W5S+jQvzAF5rIqORam8BgthSDtk7Kjr0OqzXawNvV zQ8ylRVG599RlqjcgJVmBT0Sgi/rnLDBKUSq5U/BenohwPieBIXhKrbPwQVnaW9qKNU/ nsQBqkGJaeuGrLcG/kDa5P/ycFy63O2dwQvCva3GK0HkDrTPGLqe29cVzlSh6PIYJz/i eIP+YNghm2O/sS+eA2XWU2zNsQby3pOqDH643hypmx3rPB3EHuMVwhv+73Ixk6SeCs8o OnkA== X-Gm-Message-State: AC+VfDz4S0doQZ7UorP74oENTPBT1japos5t+M43vIDaHCFfwkmpNC8L tYTR9FuGGrtMetxAsxCOXVNhAL/5pTtQfA== X-Google-Smtp-Source: ACHHUZ6U41Ymc//NQ1NfFRXTc5vZxexdvF5yf/UL7aT819ElkY5jwLddGgqGkL2K4aqY7X/9EkOZQA== X-Received: by 2002:a1c:f717:0:b0:3f1:8aaa:c20c with SMTP id v23-20020a1cf717000000b003f18aaac20cmr17008034wmh.7.1683202744867; Thu, 04 May 2023 05:19:04 -0700 (PDT) Received: from localhost (fwdproxy-cln-027.fbsv.net. [2a03:2880:31ff:1b::face:b00c]) by smtp.gmail.com with ESMTPSA id y4-20020a05600c364400b003f175954e71sm4830463wmq.32.2023.05.04.05.19.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 May 2023 05:19:04 -0700 (PDT) From: Breno Leitao To: io-uring@vger.kernel.org, linux-nvme@lists.infradead.org, asml.silence@gmail.com, hch@lst.de, axboe@kernel.dk, ming.lei@redhat.com Cc: leit@fb.com, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, sagi@grimberg.me, joshi.k@samsung.com, kbusch@kernel.org Subject: [PATCH v4 1/3] io_uring: Create a helper to return the SQE size Date: Thu, 4 May 2023 05:18:54 -0700 Message-Id: <20230504121856.904491-2-leitao@debian.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230504121856.904491-1-leitao@debian.org> References: <20230504121856.904491-1-leitao@debian.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Create a simple helper that returns the size of the SQE. The SQE could have two size, depending of the flags. If IO_URING_SETUP_SQE128 flag is set, then return a double SQE, otherwise returns the sizeof of io_uring_sqe (64 bytes). Signed-off-by: Breno Leitao Reviewed-by: Christoph Hellwig Reviewed-by: Ming Lei --- io_uring/io_uring.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/io_uring/io_uring.h b/io_uring/io_uring.h index 25515d69d205..259bf798a390 100644 --- a/io_uring/io_uring.h +++ b/io_uring/io_uring.h @@ -394,4 +394,14 @@ static inline void io_req_queue_tw_complete(struct io_kiocb *req, s32 res) io_req_task_work_add(req); } +/* + * IORING_SETUP_SQE128 contexts allocate twice the normal SQE size for each + * slot. + */ +static inline size_t uring_sqe_size(struct io_ring_ctx *ctx) +{ + if (ctx->flags & IORING_SETUP_SQE128) + return 2 * sizeof(struct io_uring_sqe); + return sizeof(struct io_uring_sqe); +} #endif