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 9635343B38; Wed, 14 Feb 2024 17:36:26 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id ADF7642E54; Wed, 14 Feb 2024 17:36:12 +0100 (CET) Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by mails.dpdk.org (Postfix) with ESMTP id C8F8D427D7 for ; Wed, 14 Feb 2024 17:36:06 +0100 (CET) Received: by linux.microsoft.com (Postfix, from userid 1086) id F3DE220B2003; Wed, 14 Feb 2024 08:36:05 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com F3DE220B2003 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1707928566; bh=LhiAcFL8IpVzmmAPJgAv0jg/+iGj/fmqJp/gNSqIbVI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ipPssHTCv0b9AV3VCDNmQLHye0LSckLmQtZ/DBOSDXPVqUXU/Gg7ll9VXMhmkE1hI HZHNDf5y7eu3+nQN/y8NJXlB5puYtxnGRZwvZpC+X2NjDYIadchyycHcZS1vc2AeBm 149zAd9ardv8n/BRFOcVmYpDpJuubfHjp6a957Vo= 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 v4 03/39] stack: use C11 alignas Date: Wed, 14 Feb 2024 08:35:28 -0800 Message-Id: <1707928564-28796-4-git-send-email-roretzla@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1707928564-28796-1-git-send-email-roretzla@linux.microsoft.com> References: <1707873986-29352-1-git-send-email-roretzla@linux.microsoft.com> <1707928564-28796-1-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 * 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/stack/rte_stack.h | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/lib/stack/rte_stack.h b/lib/stack/rte_stack.h index a379300..8ff0659 100644 --- a/lib/stack/rte_stack.h +++ b/lib/stack/rte_stack.h @@ -15,6 +15,8 @@ #ifndef _RTE_STACK_H_ #define _RTE_STACK_H_ +#include + #ifdef __cplusplus extern "C" { #endif @@ -42,7 +44,7 @@ struct rte_stack_lf_head { struct rte_stack_lf_list { /** List head */ - struct rte_stack_lf_head head __rte_aligned(16); + alignas(16) struct rte_stack_lf_head head; /** List len */ RTE_ATOMIC(uint64_t) len; }; @@ -52,11 +54,11 @@ struct rte_stack_lf_list { */ struct rte_stack_lf { /** LIFO list of elements */ - struct rte_stack_lf_list used __rte_cache_aligned; + alignas(RTE_CACHE_LINE_SIZE) struct rte_stack_lf_list used; /** LIFO list of free elements */ - struct rte_stack_lf_list free __rte_cache_aligned; + alignas(RTE_CACHE_LINE_SIZE) struct rte_stack_lf_list free; /** LIFO elements */ - struct rte_stack_lf_elem elems[] __rte_cache_aligned; + alignas(RTE_CACHE_LINE_SIZE) struct rte_stack_lf_elem elems[]; }; /* Structure containing the LIFO, its current length, and a lock for mutual @@ -71,9 +73,9 @@ struct rte_stack_std { /* The RTE stack structure contains the LIFO structure itself, plus metadata * such as its name and memzone pointer. */ -struct rte_stack { +struct __rte_cache_aligned rte_stack { /** Name of the stack. */ - char name[RTE_STACK_NAMESIZE] __rte_cache_aligned; + alignas(RTE_CACHE_LINE_SIZE) char name[RTE_STACK_NAMESIZE]; /** Memzone containing the rte_stack structure. */ const struct rte_memzone *memzone; uint32_t capacity; /**< Usable size of the stack. */ @@ -82,7 +84,7 @@ struct rte_stack { struct rte_stack_lf stack_lf; /**< Lock-free LIFO structure. */ struct rte_stack_std stack_std; /**< LIFO structure. */ }; -} __rte_cache_aligned; +}; /** * The stack uses lock-free push and pop functions. This flag is only -- 1.8.3.1