From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id A0663377A for ; Mon, 2 Feb 2015 03:03:08 +0100 (CET) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga102.fm.intel.com with ESMTP; 01 Feb 2015 18:03:07 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.09,503,1418112000"; d="scan'208";a="671241893" Received: from shvmail01.sh.intel.com ([10.239.29.42]) by fmsmga002.fm.intel.com with ESMTP; 01 Feb 2015 18:03:06 -0800 Received: from shecgisg004.sh.intel.com (shecgisg004.sh.intel.com [10.239.29.89]) by shvmail01.sh.intel.com with ESMTP id t12234eG013371; Mon, 2 Feb 2015 10:03:04 +0800 Received: from shecgisg004.sh.intel.com (localhost [127.0.0.1]) by shecgisg004.sh.intel.com (8.13.6/8.13.6/SuSE Linux 0.8) with ESMTP id t12230M1013714; Mon, 2 Feb 2015 10:03:02 +0800 Received: (from cliang18@localhost) by shecgisg004.sh.intel.com (8.13.6/8.13.6/Submit) id t122301t013710; Mon, 2 Feb 2015 10:03:00 +0800 From: Cunming Liang To: dev@dpdk.org Date: Mon, 2 Feb 2015 10:02:28 +0800 Message-Id: <1422842559-13617-7-git-send-email-cunming.liang@intel.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1422842559-13617-1-git-send-email-cunming.liang@intel.com> References: <1422491072-5114-1-git-send-email-cunming.liang@intel.com> <1422842559-13617-1-git-send-email-cunming.liang@intel.com> Subject: [dpdk-dev] [PATCH v4 06/17] eal: add eal_common_thread.c for common thread API X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 02 Feb 2015 02:03:10 -0000 The API works for both EAL thread and none EAL thread. When calling rte_thread_set_affinity, the *_socket_id* and *_cpuset* of calling thread will be updated if the thread successful set the cpu affinity. Signed-off-by: Cunming Liang --- lib/librte_eal/bsdapp/eal/Makefile | 1 + lib/librte_eal/common/eal_common_thread.c | 142 ++++++++++++++++++++++++++++++ lib/librte_eal/linuxapp/eal/Makefile | 2 + 3 files changed, 145 insertions(+) create mode 100644 lib/librte_eal/common/eal_common_thread.c diff --git a/lib/librte_eal/bsdapp/eal/Makefile b/lib/librte_eal/bsdapp/eal/Makefile index d434882..78406be 100644 --- a/lib/librte_eal/bsdapp/eal/Makefile +++ b/lib/librte_eal/bsdapp/eal/Makefile @@ -73,6 +73,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_common_hexdump.c SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_common_devargs.c SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_common_dev.c SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_common_options.c +SRCS-$(CONFIG_RTE_LIBRTE_EAL_BSDAPP) += eal_common_thread.c CFLAGS_eal.o := -D_GNU_SOURCE #CFLAGS_eal_thread.o := -D_GNU_SOURCE diff --git a/lib/librte_eal/common/eal_common_thread.c b/lib/librte_eal/common/eal_common_thread.c new file mode 100644 index 0000000..d996690 --- /dev/null +++ b/lib/librte_eal/common/eal_common_thread.c @@ -0,0 +1,142 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include "eal_thread.h" + +int +rte_thread_set_affinity(rte_cpuset_t *cpusetp) +{ + int s; + unsigned lcore_id; + pthread_t tid; + + if (!cpusetp) + return -1; + + lcore_id = rte_lcore_id(); + if (lcore_id != (unsigned)LCORE_ID_ANY) { + /* EAL thread */ + tid = lcore_config[lcore_id].thread_id; + + s = pthread_setaffinity_np(tid, sizeof(rte_cpuset_t), cpusetp); + if (s != 0) { + RTE_LOG(ERR, EAL, "pthread_setaffinity_np failed\n"); + return -1; + } + + /* store socket_id in TLS for quick access */ + RTE_PER_LCORE(_socket_id) = + eal_cpuset_socket_id(cpusetp); + + /* store cpuset in TLS for quick access */ + rte_memcpy(&RTE_PER_LCORE(_cpuset), cpusetp, + sizeof(rte_cpuset_t)); + + /* update lcore_config */ + lcore_config[lcore_id].socket_id = RTE_PER_LCORE(_socket_id); + rte_memcpy(&lcore_config[lcore_id].cpuset, cpusetp, + sizeof(rte_cpuset_t)); + } else { + /* none EAL thread */ + tid = pthread_self(); + + s = pthread_setaffinity_np(tid, sizeof(rte_cpuset_t), cpusetp); + if (s != 0) { + RTE_LOG(ERR, EAL, "pthread_setaffinity_np failed\n"); + return -1; + } + + /* store cpuset in TLS for quick access */ + rte_memcpy(&RTE_PER_LCORE(_cpuset), cpusetp, + sizeof(rte_cpuset_t)); + + /* store socket_id in TLS for quick access */ + RTE_PER_LCORE(_socket_id) = + eal_cpuset_socket_id(cpusetp); + } + + return 0; +} + +int +rte_thread_get_affinity(rte_cpuset_t *cpusetp) +{ + if (!cpusetp) + return -1; + + rte_memcpy(cpusetp, &RTE_PER_LCORE(_cpuset), + sizeof(rte_cpuset_t)); + + return 0; +} + +void +eal_thread_dump_affinity(char str[], unsigned size) +{ + rte_cpuset_t cpuset; + unsigned cpu; + int ret; + unsigned int out = 0; + + if (rte_thread_get_affinity(&cpuset) < 0) { + str[0] = '\0'; + return; + } + + for (cpu = 0; cpu < RTE_MAX_LCORE; cpu++) { + if (!CPU_ISSET(cpu, &cpuset)) + continue; + + ret = snprintf(str + out, + size - out, "%u,", cpu); + if (ret < 0 || (unsigned)ret >= size - out) + break; + + out += ret; + } + + /* remove the last separator */ + if (out > 0) + str[out - 1] = '\0'; +} diff --git a/lib/librte_eal/linuxapp/eal/Makefile b/lib/librte_eal/linuxapp/eal/Makefile index 025d836..07e21ca 100644 --- a/lib/librte_eal/linuxapp/eal/Makefile +++ b/lib/librte_eal/linuxapp/eal/Makefile @@ -85,6 +85,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_common_hexdump.c SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_common_devargs.c SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_common_dev.c SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_common_options.c +SRCS-$(CONFIG_RTE_LIBRTE_EAL_LINUXAPP) += eal_common_thread.c CFLAGS_eal.o := -D_GNU_SOURCE CFLAGS_eal_lcore.o := -D_GNU_SOURCE @@ -96,6 +97,7 @@ CFLAGS_eal_pci.o := -D_GNU_SOURCE CFLAGS_eal_pci_vfio.o := -D_GNU_SOURCE CFLAGS_eal_common_whitelist.o := -D_GNU_SOURCE CFLAGS_eal_common_options.o := -D_GNU_SOURCE +CFLAGS_eal_common_thread.o := -D_GNU_SOURCE # workaround for a gcc bug with noreturn attribute # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12603 -- 1.8.1.4