From 97f17497d162afdb82c8704bf097f0fee3724b2e Mon Sep 17 00:00:00 2001 From: "C.J. Collier" Date: Tue, 14 Jun 2016 07:50:17 -0700 Subject: Imported Upstream version 16.04 Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757 Signed-off-by: C.J. Collier --- lib/librte_eal/common/eal_common_thread.c | 157 ++++++++++++++++++++++++++++++ 1 file changed, 157 insertions(+) create mode 100644 lib/librte_eal/common/eal_common_thread.c (limited to 'lib/librte_eal/common/eal_common_thread.c') 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 00000000..2405e93f --- /dev/null +++ b/lib/librte_eal/common/eal_common_thread.c @@ -0,0 +1,157 @@ +/*- + * 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 +#include + +#include "eal_thread.h" + +RTE_DECLARE_PER_LCORE(unsigned , _socket_id); + +unsigned rte_socket_id(void) +{ + return RTE_PER_LCORE(_socket_id); +} + +int eal_cpuset_socket_id(rte_cpuset_t *cpusetp) +{ + unsigned cpu = 0; + int socket_id = SOCKET_ID_ANY; + int sid; + + if (cpusetp == NULL) + return SOCKET_ID_ANY; + + do { + if (!CPU_ISSET(cpu, cpusetp)) + continue; + + if (socket_id == SOCKET_ID_ANY) + socket_id = eal_cpu_socket_id(cpu); + + sid = eal_cpu_socket_id(cpu); + if (socket_id != sid) { + socket_id = SOCKET_ID_ANY; + break; + } + + } while (++cpu < RTE_MAX_LCORE); + + return socket_id; +} + +int +rte_thread_set_affinity(rte_cpuset_t *cpusetp) +{ + int s; + unsigned lcore_id; + pthread_t tid; + + 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 socket_id in TLS for quick access */ + RTE_PER_LCORE(_socket_id) = + eal_cpuset_socket_id(cpusetp); + + /* store cpuset in TLS for quick access */ + memmove(&RTE_PER_LCORE(_cpuset), cpusetp, + sizeof(rte_cpuset_t)); + + lcore_id = rte_lcore_id(); + if (lcore_id != (unsigned)LCORE_ID_ANY) { + /* EAL thread will update lcore_config */ + lcore_config[lcore_id].socket_id = RTE_PER_LCORE(_socket_id); + memmove(&lcore_config[lcore_id].cpuset, cpusetp, + sizeof(rte_cpuset_t)); + } + + return 0; +} + +void +rte_thread_get_affinity(rte_cpuset_t *cpusetp) +{ + assert(cpusetp); + memmove(cpusetp, &RTE_PER_LCORE(_cpuset), + sizeof(rte_cpuset_t)); +} + +int +eal_thread_dump_affinity(char *str, unsigned size) +{ + rte_cpuset_t cpuset; + unsigned cpu; + int ret; + unsigned int out = 0; + + rte_thread_get_affinity(&cpuset); + + 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) { + /* string will be truncated */ + ret = -1; + goto exit; + } + + out += ret; + } + + ret = 0; +exit: + /* remove the last separator */ + if (out > 0) + str[out - 1] = '\0'; + + return ret; +} -- cgit 1.2.3-korg