From patchwork Mon Mar 4 17:52:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Tyler Retzlaff X-Patchwork-Id: 137938 X-Patchwork-Delegate: david.marchand@redhat.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id F2EAD43B9B; Mon, 4 Mar 2024 18:55:42 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id AD50242E7A; Mon, 4 Mar 2024 18:53:21 +0100 (CET) Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by mails.dpdk.org (Postfix) with ESMTP id A2CCF40ED6 for ; Mon, 4 Mar 2024 18:52:52 +0100 (CET) Received: by linux.microsoft.com (Postfix, from userid 1086) id 8DC0120B74DA; Mon, 4 Mar 2024 09:52:50 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 8DC0120B74DA DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1709574771; bh=gJWD9ODwvU2WU60HxuV3H8+w4rR2gJmY2iXExO78030=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=It6rv6lcV7g6BAZbYpWavBDuVP8gGLCksZFQOzZSKs8LRWy8fRcdlbcrX4b3OhfJX U9y7EsIB37yC7lEGK36R1/+WskyWrastEg1voN1YnAbLbY2HUYgsU/iu9pcfcBVKGU AasmCx79v8RRfSTsAH+W4SsY79igULiDPKqS/1ig= From: Tyler Retzlaff To: dev@dpdk.org Cc: Andrew Rybchenko , Bruce Richardson , Chengwen Feng , Cristian Dumitrescu , David Christensen , David Hunt , Ferruh Yigit , Honnappa Nagarahalli , Jasvinder Singh , Jerin Jacob , Kevin Laatz , Konstantin Ananyev , Min Zhou , Ruifeng Wang , Sameh Gobriel , Stanislaw Kardach , Thomas Monjalon , Vladimir Medvedkin , Yipeng Wang , Tyler Retzlaff Subject: [PATCH v7 26/39] mldev: use C11 alignas Date: Mon, 4 Mar 2024 09:52:31 -0800 Message-Id: <1709574764-9041-27-git-send-email-roretzla@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1709574764-9041-1-git-send-email-roretzla@linux.microsoft.com> References: <1707873986-29352-1-git-send-email-roretzla@linux.microsoft.com> <1709574764-9041-1-git-send-email-roretzla@linux.microsoft.com> MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org The current location used for __rte_aligned(a) for alignment of types and variables is not compatible with MSVC. There is only a single location accepted by both toolchains. For variables standard C11 offers alignas(a) supported by conformant compilers i.e. both MSVC and GCC. For types the standard offers no alignment facility that compatibly interoperates with C and C++ but may be achieved by relocating the placement of __rte_aligned(a) to the aforementioned location accepted by all currently supported toolchains. To allow alignment for both compilers do the following: * Move __rte_aligned from the end of {struct,union} definitions to be between {struct,union} and tag. The placement between {struct,union} and the tag allows the desired alignment to be imparted on the type regardless of the toolchain being used for all of GCC, LLVM, MSVC compilers building both C and C++. * Replace use of __rte_aligned(a) on variables/fields with alignas(a). Signed-off-by: Tyler Retzlaff Acked-by: Morten Brørup --- lib/mldev/rte_mldev.h | 4 ++-- lib/mldev/rte_mldev_core.h | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/lib/mldev/rte_mldev.h b/lib/mldev/rte_mldev.h index 01577bd..634af3d 100644 --- a/lib/mldev/rte_mldev.h +++ b/lib/mldev/rte_mldev.h @@ -421,7 +421,7 @@ struct rte_ml_buff_seg { * This structure contains data related to performing an ML operation on the buffers using * the model specified through model_id. */ -struct rte_ml_op { +struct __rte_cache_aligned rte_ml_op { uint16_t model_id; /**< Model ID to be used for the operation. */ uint16_t nb_batches; @@ -469,7 +469,7 @@ struct rte_ml_op { * dequeue and enqueue operation. * The application should not modify this field. */ -} __rte_cache_aligned; +}; /* Enqueue/Dequeue operations */ diff --git a/lib/mldev/rte_mldev_core.h b/lib/mldev/rte_mldev_core.h index 2279b1d..b3bd281 100644 --- a/lib/mldev/rte_mldev_core.h +++ b/lib/mldev/rte_mldev_core.h @@ -626,7 +626,7 @@ struct rte_ml_dev_data { * * The data structure associated with each ML device. */ -struct rte_ml_dev { +struct __rte_cache_aligned rte_ml_dev { /** Pointer to PMD enqueue function. */ mldev_enqueue_t enqueue_burst; @@ -647,7 +647,7 @@ struct rte_ml_dev { /** Flag indicating the device is attached. */ __extension__ uint8_t attached : 1; -} __rte_cache_aligned; +}; /** * @internal