From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id EA6BDA2F6B for ; Wed, 9 Oct 2019 07:59:43 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id B2E961C0B7; Wed, 9 Oct 2019 07:59:31 +0200 (CEST) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by dpdk.org (Postfix) with ESMTP id 29C111C07C for ; Wed, 9 Oct 2019 07:59:27 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 Oct 2019 22:59:28 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.67,273,1566889200"; d="scan'208";a="223473375" Received: from npg-dpdk-virtual-marvin-dev.sh.intel.com ([10.67.119.142]) by fmsmga002.fm.intel.com with ESMTP; 08 Oct 2019 22:59:26 -0700 From: Marvin Liu To: maxime.coquelin@redhat.com, tiwei.bie@intel.com, zhihong.wang@intel.com, stephen@networkplumber.org, gavin.hu@arm.com Cc: dev@dpdk.org, Marvin Liu Date: Wed, 9 Oct 2019 21:38:37 +0800 Message-Id: <20191009133849.69002-3-yong.liu@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191009133849.69002-1-yong.liu@intel.com> References: <20190925171329.63734-1-yong.liu@intel.com> <20191009133849.69002-1-yong.liu@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH v4 02/14] vhost: unify unroll pragma parameter X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Add macro for unifying Clang/ICC/GCC unroll pragma format. Batch functions were contained of several small loops which optimized by compiler’s loop unrolling pragma. Signed-off-by: Marvin Liu diff --git a/lib/librte_vhost/Makefile b/lib/librte_vhost/Makefile index 8623e91c0..30839a001 100644 --- a/lib/librte_vhost/Makefile +++ b/lib/librte_vhost/Makefile @@ -16,6 +16,24 @@ CFLAGS += -I vhost_user CFLAGS += -fno-strict-aliasing LDLIBS += -lpthread +ifeq ($(RTE_TOOLCHAIN), gcc) +ifeq ($(shell test $(GCC_VERSION) -ge 83 && echo 1), 1) +CFLAGS += -DSUPPORT_GCC_UNROLL_PRAGMA +endif +endif + +ifeq ($(RTE_TOOLCHAIN), clang) +ifeq ($(shell test $(CLANG_MAJOR_VERSION)$(CLANG_MINOR_VERSION) -ge 37 && echo 1), 1) +CFLAGS += -DSUPPORT_CLANG_UNROLL_PRAGMA +endif +endif + +ifeq ($(RTE_TOOLCHAIN), icc) +ifeq ($(shell test $(ICC_MAJOR_VERSION) -ge 16 && echo 1), 1) +CFLAGS += -DSUPPORT_ICC_UNROLL_PRAGMA +endif +endif + ifeq ($(CONFIG_RTE_LIBRTE_VHOST_NUMA),y) LDLIBS += -lnuma endif diff --git a/lib/librte_vhost/meson.build b/lib/librte_vhost/meson.build index cb1123ae3..ddf0ee579 100644 --- a/lib/librte_vhost/meson.build +++ b/lib/librte_vhost/meson.build @@ -8,6 +8,13 @@ endif if has_libnuma == 1 dpdk_conf.set10('RTE_LIBRTE_VHOST_NUMA', true) endif +if (toolchain == 'gcc' and cc.version().version_compare('>=8.3.0')) + cflags += '-DSUPPORT_GCC_UNROLL_PRAGMA' +elif (toolchain == 'clang' and cc.version().version_compare('>=3.7.0')) + cflags += '-DSUPPORT_CLANG_UNROLL_PRAGMA' +elif (toolchain == 'icc' and cc.version().version_compare('>=16.0.0')) + cflags += '-DSUPPORT_ICC_UNROLL_PRAGMA' +endif dpdk_conf.set('RTE_LIBRTE_VHOST_POSTCOPY', cc.has_header('linux/userfaultfd.h')) version = 4 diff --git a/lib/librte_vhost/vhost.h b/lib/librte_vhost/vhost.h index 884befa85..4cba8c5ef 100644 --- a/lib/librte_vhost/vhost.h +++ b/lib/librte_vhost/vhost.h @@ -39,6 +39,24 @@ #define VHOST_LOG_CACHE_NR 32 +#ifdef SUPPORT_GCC_UNROLL_PRAGMA +#define UNROLL_PRAGMA_PARAM "GCC unroll 4" +#endif + +#ifdef SUPPORT_CLANG_UNROLL_PRAGMA +#define UNROLL_PRAGMA_PARAM "unroll 4" +#endif + +#ifdef SUPPORT_ICC_UNROLL_PRAGMA +#define UNROLL_PRAGMA_PARAM "unroll (4)" +#endif + +#ifdef UNROLL_PRAGMA_PARAM +#define UNROLL_PRAGMA(param) _Pragma(param) +#else +#define UNROLL_PRAGMA(param) do {} while (0); +#endif + /** * Structure contains buffer address, length and descriptor index * from vring to do scatter RX. -- 2.17.1