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 DB0EC43028; Fri, 11 Aug 2023 03:32:21 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 8062543260; Fri, 11 Aug 2023 03:32:10 +0200 (CEST) Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by mails.dpdk.org (Postfix) with ESMTP id B361A40E03; Fri, 11 Aug 2023 03:32:05 +0200 (CEST) Received: by linux.microsoft.com (Postfix, from userid 1086) id CEA3120FD058; Thu, 10 Aug 2023 18:32:04 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com CEA3120FD058 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1691717524; bh=WBxylC/yIzi0ZZD0MzOcfR5x7hYDwTUx8GXZv8EhP7A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PMpdhBzi4ERx6RJIi13rFbeDItohXNMyUs2nvz7InAoxm4255LbfGZ48fQqwRtyGz HuOV5m/Jpio0LQ8bF5MBbn7OeJTWvM2YqONUlAcwAR9IiMsOT/soKdzF/mQ5FbN5Dw 76tq4m6WpnWFXLBXHQ8NxB2WTFVKqNEYXj3mOnpQ= From: Tyler Retzlaff To: dev@dpdk.org Cc: techboard@dpdk.org, Bruce Richardson , Honnappa Nagarahalli , Ruifeng Wang , Jerin Jacob , Sunil Kumar Kori , =?UTF-8?q?Mattias=20R=C3=B6nnblom?= , Joyce Kong , David Christensen , Konstantin Ananyev , David Hunt , Thomas Monjalon , David Marchand , Tyler Retzlaff Subject: [PATCH 1/6] eal: provide rte stdatomics optional atomics API Date: Thu, 10 Aug 2023 18:31:56 -0700 Message-Id: <1691717521-1025-2-git-send-email-roretzla@linux.microsoft.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1691717521-1025-1-git-send-email-roretzla@linux.microsoft.com> References: <1691717521-1025-1-git-send-email-roretzla@linux.microsoft.com> 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 Provide API for atomic operations in the rte namespace that may optionally be configured to use C11 atomics with meson option enable_stdatomics=true Signed-off-by: Tyler Retzlaff --- config/meson.build | 1 + config/rte_config.h | 1 + lib/eal/include/meson.build | 1 + lib/eal/include/rte_stdatomic.h | 162 ++++++++++++++++++++++++++++++++++++++++ meson_options.txt | 1 + 5 files changed, 166 insertions(+) create mode 100644 lib/eal/include/rte_stdatomic.h diff --git a/config/meson.build b/config/meson.build index d822371..ec49964 100644 --- a/config/meson.build +++ b/config/meson.build @@ -303,6 +303,7 @@ endforeach # set other values pulled from the build options dpdk_conf.set('RTE_MAX_ETHPORTS', get_option('max_ethports')) dpdk_conf.set('RTE_LIBEAL_USE_HPET', get_option('use_hpet')) +dpdk_conf.set('RTE_ENABLE_STDATOMIC', get_option('enable_stdatomic')) dpdk_conf.set('RTE_ENABLE_TRACE_FP', get_option('enable_trace_fp')) # values which have defaults which may be overridden dpdk_conf.set('RTE_MAX_VFIO_GROUPS', 64) diff --git a/config/rte_config.h b/config/rte_config.h index 400e44e..f17b6ae 100644 --- a/config/rte_config.h +++ b/config/rte_config.h @@ -13,6 +13,7 @@ #define _RTE_CONFIG_H_ #include +#include /* legacy defines */ #ifdef RTE_EXEC_ENV_LINUX diff --git a/lib/eal/include/meson.build b/lib/eal/include/meson.build index b0db9b3..f8a47b3 100644 --- a/lib/eal/include/meson.build +++ b/lib/eal/include/meson.build @@ -43,6 +43,7 @@ headers += files( 'rte_seqlock.h', 'rte_service.h', 'rte_service_component.h', + 'rte_stdatomic.h', 'rte_string_fns.h', 'rte_tailq.h', 'rte_thread.h', diff --git a/lib/eal/include/rte_stdatomic.h b/lib/eal/include/rte_stdatomic.h new file mode 100644 index 0000000..832fd07 --- /dev/null +++ b/lib/eal/include/rte_stdatomic.h @@ -0,0 +1,162 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2023 Microsoft Corporation + */ + +#ifndef _RTE_STDATOMIC_H_ +#define _RTE_STDATOMIC_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +typedef int rte_memory_order; + +#ifdef RTE_ENABLE_STDATOMIC +#ifdef __STDC_NO_ATOMICS__ +#error enable_stdatomics=true but atomics not supported by toolchain +#endif + +#include + +#define __rte_atomic _Atomic + +#define rte_memory_order_relaxed memory_order_relaxed +#ifdef __ATOMIC_RELAXED +_Static_assert(rte_memory_order_relaxed == __ATOMIC_RELAXED, + "rte_memory_order_relaxed == __ATOMIC_RELAXED"); +#endif + +#define rte_memory_order_consume memory_order_consume +#ifdef __ATOMIC_CONSUME +_Static_assert(rte_memory_order_consume == __ATOMIC_CONSUME, + "rte_memory_order_consume == __ATOMIC_CONSUME"); +#endif + +#define rte_memory_order_acquire memory_order_acquire +#ifdef __ATOMIC_ACQUIRE +_Static_assert(rte_memory_order_acquire == __ATOMIC_ACQUIRE, + "rte_memory_order_acquire == __ATOMIC_ACQUIRE"); +#endif + +#define rte_memory_order_release memory_order_release +#ifdef __ATOMIC_RELEASE +_Static_assert(rte_memory_order_release == __ATOMIC_RELEASE, + "rte_memory_order_release == __ATOMIC_RELEASE"); +#endif + +#define rte_memory_order_acq_rel memory_order_acq_rel +#ifdef __ATOMIC_ACQ_REL +_Static_assert(rte_memory_order_acq_rel == __ATOMIC_ACQ_REL, + "rte_memory_order_acq_rel == __ATOMIC_ACQ_REL"); +#endif + +#define rte_memory_order_seq_cst memory_order_seq_cst +#ifdef __ATOMIC_SEQ_CST +_Static_assert(rte_memory_order_seq_cst == __ATOMIC_SEQ_CST, + "rte_memory_order_seq_cst == __ATOMIC_SEQ_CST"); +#endif + +#define rte_atomic_load_explicit(ptr, memorder) \ + atomic_load_explicit(ptr, memorder) + +#define rte_atomic_store_explicit(ptr, val, memorder) \ + atomic_store_explicit(ptr, val, memorder) + +#define rte_atomic_exchange_explicit(ptr, val, memorder) \ + atomic_exchange_explicit(ptr, val, memorder) + +#define rte_atomic_compare_exchange_strong_explicit( \ + ptr, expected, desired, succ_memorder, fail_memorder) \ + atomic_compare_exchange_strong_explicit( \ + ptr, expected, desired, succ_memorder, fail_memorder) + +#define rte_atomic_compare_exchange_weak_explicit( \ + ptr, expected, desired, succ_memorder, fail_memorder) \ + atomic_compare_exchange_strong_explicit( \ + ptr, expected, desired, succ_memorder, fail_memorder) + +#define rte_atomic_fetch_add_explicit(ptr, val, memorder) \ + atomic_fetch_add_explicit(ptr, val, memorder) + +#define rte_atomic_fetch_sub_explicit(ptr, val, memorder) \ + atomic_fetch_sub_explicit(ptr, val, memorder) + +#define rte_atomic_fetch_and_explicit(ptr, val, memorder) \ + atomic_fetch_and_explicit(ptr, val, memorder) + +#define rte_atomic_fetch_xor_explicit(ptr, val, memorder) \ + atomic_fetch_xor_explicit(ptr, val, memorder) + +#define rte_atomic_fetch_or_explicit(ptr, val, memorder) \ + atomic_fetch_or_explicit(ptr, val, memorder) + +#define rte_atomic_fetch_nand_explicit(ptr, val, memorder) \ + atomic_fetch_nand_explicit(ptr, val, memorder) + +#define rte_atomic_flag_test_and_set_explict(ptr, memorder) \ + atomic_flag_test_and_set_explicit(ptr, memorder) + +#define rte_atomic_flag_clear_explicit(ptr, memorder) \ + atomic_flag_clear(ptr, memorder) + +#else + +#define __rte_atomic + +#define rte_memory_order_relaxed __ATOMIC_RELAXED +#define rte_memory_order_consume __ATOMIC_CONSUME +#define rte_memory_order_acquire __ATOMIC_ACQUIRE +#define rte_memory_order_release __ATOMIC_RELEASE +#define rte_memory_order_acq_rel __ATOMIC_ACQ_REL +#define rte_memory_order_seq_cst __ATOMIC_SEQ_CST + +#define rte_atomic_load_explicit(ptr, memorder) \ + __atomic_load_n(ptr, memorder) + +#define rte_atomic_store_explicit(ptr, val, memorder) \ + __atomic_store_n(ptr, val, memorder) + +#define rte_atomic_exchange_explicit(ptr, val, memorder) \ + __atomic_exchange_n(ptr, val, memorder) + +#define rte_atomic_compare_exchange_strong_explicit( \ + ptr, expected, desired, succ_memorder, fail_memorder) \ + __atomic_compare_exchange_n( \ + ptr, expected, desired, 0, succ_memorder, fail_memorder) + +#define rte_atomic_compare_exchange_weak_explicit( \ + ptr, expected, desired, succ_memorder, fail_memorder) \ + __atomic_compare_exchange_n( \ + ptr, expected, desired, 1, succ_memorder, fail_memorder) + +#define rte_atomic_fetch_add_explicit(ptr, val, memorder) \ + __atomic_fetch_add(ptr, val, memorder) + +#define rte_atomic_fetch_sub_explicit(ptr, val, memorder) \ + __atomic_fetch_sub(ptr, val, memorder) + +#define rte_atomic_fetch_and_explicit(ptr, val, memorder) \ + __atomic_fetch_and(ptr, val, memorder) + +#define rte_atomic_fetch_xor_explicit(ptr, val, memorder) \ + __atomic_fetch_xor(ptr, val, memorder) + +#define rte_atomic_fetch_or_explicit(ptr, val, memorder) \ + __atomic_fetch_or(ptr, val, memorder) + +#define rte_atomic_fetch_nand_explicit(ptr, val, memorder) \ + __atomic_fetch_nand(ptr, val, memorder) + +#define rte_atomic_flag_test_and_set_explicit(ptr, memorder) \ + __atomic_test_and_set(ptr, memorder) + +#define rte_atomic_flag_clear_explicit(ptr, memorder) \ + __atomic_clear(ptr, memorder) + +#endif + +#ifdef __cplusplus +} +#endif + +#endif /* _RTE_STDATOMIC_H_ */ diff --git a/meson_options.txt b/meson_options.txt index 621e1ca..7d6784d 100644 --- a/meson_options.txt +++ b/meson_options.txt @@ -46,6 +46,7 @@ option('mbuf_refcnt_atomic', type: 'boolean', value: true, description: 'Atomically access the mbuf refcnt.') option('platform', type: 'string', value: 'native', description: 'Platform to build, either "native", "generic" or a SoC. Please refer to the Linux build guide for more information.') +option('enable_stdatomic', type: 'boolean', value: false, description: 'enable use of C11 stdatomic') option('enable_trace_fp', type: 'boolean', value: false, description: 'enable fast path trace points.') option('tests', type: 'boolean', value: true, description: -- 1.8.3.1