From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id DE91E43BA4; Fri, 23 Feb 2024 20:07:38 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id AD9C142E04; Fri, 23 Feb 2024 20:04:56 +0100 (CET) Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by mails.dpdk.org (Postfix) with ESMTP id A62144029F for ; Fri, 23 Feb 2024 20:04:19 +0100 (CET) Received: by linux.microsoft.com (Postfix, from userid 1086) id 05D7E20B74E1; Fri, 23 Feb 2024 11:04:16 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 05D7E20B74E1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1708715058; bh=rFubX9acXQ2aXx/5OwXwzx5q1ufH2dQQvVcUaL0d2Ds=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KzbgfKynPMjDS5aSfT4vXlc4ioY8DRbFX1XjXgV9vzS/gIkPNCqp0lTTDsoQxNE0t pIzSAfqh5zLuFnX1ijAZrk9LCXZ52EDP9E2fI8dG7lVHNaKGpfMUq87EQ3dhJpYr0T c4qV5Z7fietJjTtVH0oOYv62qfyww81wIm/b2/Bk= 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 v5 33/39] compressdev: use C11 alignas Date: Fri, 23 Feb 2024 11:04:08 -0800 Message-Id: <1708715054-22386-34-git-send-email-roretzla@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1708715054-22386-1-git-send-email-roretzla@linux.microsoft.com> References: <1707873986-29352-1-git-send-email-roretzla@linux.microsoft.com> <1708715054-22386-1-git-send-email-roretzla@linux.microsoft.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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/compressdev/rte_comp.h | 4 ++-- lib/compressdev/rte_compressdev_internal.h | 8 ++++---- 2 files changed, 6 insertions(+), 6 deletions(-) diff --git a/lib/compressdev/rte_comp.h b/lib/compressdev/rte_comp.h index 3606ebf..830a240 100644 --- a/lib/compressdev/rte_comp.h +++ b/lib/compressdev/rte_comp.h @@ -356,7 +356,7 @@ struct rte_comp_xform { * Comp operations are enqueued and dequeued in comp PMDs using the * rte_compressdev_enqueue_burst() / rte_compressdev_dequeue_burst() APIs */ -struct rte_comp_op { +struct __rte_cache_aligned rte_comp_op { enum rte_comp_op_type op_type; union { void *private_xform; @@ -478,7 +478,7 @@ struct rte_comp_op { * will be set to RTE_COMP_OP_STATUS_SUCCESS after operation * is successfully processed by a PMD */ -} __rte_cache_aligned; +}; /** * Creates an operation pool diff --git a/lib/compressdev/rte_compressdev_internal.h b/lib/compressdev/rte_compressdev_internal.h index 01b7764..8a626d3 100644 --- a/lib/compressdev/rte_compressdev_internal.h +++ b/lib/compressdev/rte_compressdev_internal.h @@ -69,7 +69,7 @@ typedef uint16_t (*compressdev_enqueue_pkt_burst_t)(void *qp, struct rte_comp_op **ops, uint16_t nb_ops); /** The data structure associated with each comp device. */ -struct rte_compressdev { +struct __rte_cache_aligned rte_compressdev { compressdev_dequeue_pkt_burst_t dequeue_burst; /**< Pointer to PMD receive function */ compressdev_enqueue_pkt_burst_t enqueue_burst; @@ -87,7 +87,7 @@ struct rte_compressdev { __extension__ uint8_t attached : 1; /**< Flag indicating the device is attached */ -} __rte_cache_aligned; +}; /** * @@ -96,7 +96,7 @@ struct rte_compressdev { * This structure is safe to place in shared memory to be common among * different processes in a multi-process configuration. */ -struct rte_compressdev_data { +struct __rte_cache_aligned rte_compressdev_data { uint8_t dev_id; /**< Compress device identifier */ int socket_id; @@ -115,7 +115,7 @@ struct rte_compressdev_data { void *dev_private; /**< PMD-specific private data */ -} __rte_cache_aligned; +}; #ifdef __cplusplus } -- 1.8.3.1