X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_eal%2Flinuxapp%2Feal%2Feal_thread.c;h=18bd8e0459199fc87013c6ad32abcf7ab56e9ae0;hb=ff708facfcbf42f3dcb3c62d82ecd93e7b8c2506;hp=601614296be8f4cf552591e4e65f0dbc6f4aa9dd;hpb=dada9ef6edc59015b6674b5a95258787c71401b0;p=dpdk.git diff --git a/lib/librte_eal/linuxapp/eal/eal_thread.c b/lib/librte_eal/linuxapp/eal/eal_thread.c index 601614296b..18bd8e0459 100644 --- a/lib/librte_eal/linuxapp/eal/eal_thread.c +++ b/lib/librte_eal/linuxapp/eal/eal_thread.c @@ -1,35 +1,34 @@ /*- * BSD LICENSE - * - * Copyright(c) 2010-2012 Intel Corporation. All rights reserved. + * + * 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 + * + * 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 + * + * * 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 + * * 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 + * * 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 + * + * 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 @@ -40,6 +39,7 @@ #include #include #include +#include #include #include @@ -48,7 +48,6 @@ #include #include #include -#include #include #include #include @@ -56,7 +55,9 @@ #include "eal_private.h" #include "eal_thread.h" -RTE_DEFINE_PER_LCORE(unsigned, _lcore_id); +RTE_DEFINE_PER_LCORE(unsigned, _lcore_id) = LCORE_ID_ANY; +RTE_DEFINE_PER_LCORE(unsigned, _socket_id) = (unsigned)SOCKET_ID_ANY; +RTE_DEFINE_PER_LCORE(rte_cpuset_t, _cpuset); /* * Send a message to a slave lcore identified by slave_id to call a @@ -85,7 +86,6 @@ rte_eal_remote_launch(int (*f)(void *), void *arg, unsigned slave_id) rte_panic("cannot write on configuration pipe\n"); /* wait ack */ - n = 0; do { n = read(s2m, &c, 1); } while (n < 0 && errno == EINTR); @@ -96,62 +96,17 @@ rte_eal_remote_launch(int (*f)(void *), void *arg, unsigned slave_id) return 0; } -/* set affinity for current thread */ +/* set affinity for current EAL thread */ static int eal_thread_set_affinity(void) { - int s; - pthread_t thread; - -/* - * According to the section VERSIONS of the CPU_ALLOC man page: - * - * The CPU_ZERO(), CPU_SET(), CPU_CLR(), and CPU_ISSET() macros were added - * in glibc 2.3.3. - * - * CPU_COUNT() first appeared in glibc 2.6. - * - * CPU_AND(), CPU_OR(), CPU_XOR(), CPU_EQUAL(), CPU_ALLOC(), - * CPU_ALLOC_SIZE(), CPU_FREE(), CPU_ZERO_S(), CPU_SET_S(), CPU_CLR_S(), - * CPU_ISSET_S(), CPU_AND_S(), CPU_OR_S(), CPU_XOR_S(), and CPU_EQUAL_S() - * first appeared in glibc 2.7. - */ -#if defined(CPU_ALLOC) - size_t size; - cpu_set_t *cpusetp; - - cpusetp = CPU_ALLOC(RTE_MAX_LCORE); - if (cpusetp == NULL) { - RTE_LOG(ERR, EAL, "CPU_ALLOC failed\n"); - return -1; - } + unsigned lcore_id = rte_lcore_id(); - size = CPU_ALLOC_SIZE(RTE_MAX_LCORE); - CPU_ZERO_S(size, cpusetp); - CPU_SET_S(rte_lcore_id(), size, cpusetp); + /* acquire system unique id */ + rte_gettid(); - thread = pthread_self(); - s = pthread_setaffinity_np(thread, size, cpusetp); - if (s != 0) { - RTE_LOG(ERR, EAL, "pthread_setaffinity_np failed\n"); - CPU_FREE(cpusetp); - return -1; - } - - CPU_FREE(cpusetp); -#else /* CPU_ALLOC */ - cpu_set_t cpuset; - CPU_ZERO( &cpuset ); - CPU_SET( rte_lcore_id(), &cpuset ); - - thread = pthread_self(); - s = pthread_setaffinity_np(thread, sizeof( cpuset ), &cpuset); - if (s != 0) { - RTE_LOG(ERR, EAL, "pthread_setaffinity_np failed\n"); - return -1; - } -#endif - return 0; + /* update EAL thread core affinity */ + return rte_thread_set_affinity(&lcore_config[lcore_id].cpuset); } void eal_thread_init_master(unsigned lcore_id) @@ -173,6 +128,7 @@ eal_thread_loop(__attribute__((unused)) void *arg) unsigned lcore_id; pthread_t thread_id; int m2s, s2m; + char cpuset[RTE_CPU_AFFINITY_STR_LEN]; thread_id = pthread_self(); @@ -184,9 +140,6 @@ eal_thread_loop(__attribute__((unused)) void *arg) if (lcore_id == RTE_MAX_LCORE) rte_panic("cannot retrieve lcore id\n"); - RTE_LOG(DEBUG, EAL, "Core %u is ready (tid=%x)\n", - lcore_id, (int)thread_id); - m2s = lcore_config[lcore_id].pipe_master2slave[0]; s2m = lcore_config[lcore_id].pipe_slave2master[1]; @@ -197,12 +150,16 @@ eal_thread_loop(__attribute__((unused)) void *arg) if (eal_thread_set_affinity() < 0) rte_panic("cannot set affinity\n"); + ret = eal_thread_dump_affinity(cpuset, RTE_CPU_AFFINITY_STR_LEN); + + RTE_LOG(DEBUG, EAL, "lcore %u is ready (tid=%x;cpuset=[%s%s])\n", + lcore_id, (int)thread_id, cpuset, ret == 0 ? "" : "..."); + /* read on our pipe to get commands */ while (1) { void *fct_arg; /* wait command */ - n = 0; do { n = read(m2s, &c, 1); } while (n < 0 && errno == EINTR); @@ -234,3 +191,9 @@ eal_thread_loop(__attribute__((unused)) void *arg) /* pthread_exit(NULL); */ /* return NULL; */ } + +/* require calling thread tid by gettid() */ +int rte_sys_gettid(void) +{ + return (int)syscall(SYS_gettid); +}