81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
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/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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*/
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#include <errno.h>
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#include <rte_debug.h>
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#include <rte_eal.h>
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#include <rte_launch.h>
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#include <rte_lcore.h>
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#include <rte_memory.h>
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#include <rte_per_lcore.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/queue.h>
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#include <rte_cycles.h>
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static int lcore_hello(__rte_unused void *arg) {
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unsigned lcore_id;
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lcore_id = rte_lcore_id();
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printf("hello from core %u\n", lcore_id);
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return 0;
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}
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int main(int argc, char **argv) {
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int socket_count;
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int lcore_count;
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int ret;
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unsigned lcore_id;
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ret = rte_eal_init(argc, argv);
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if (ret < 0)
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rte_panic("Cannot init EAL\n");
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/* call lcore_hello() on every worker lcore */
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RTE_LCORE_FOREACH_WORKER(lcore_id) {
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rte_eal_remote_launch(lcore_hello, NULL, lcore_id);
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}
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/* call it on main lcore too */
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lcore_hello(NULL);
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// print socket count
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socket_count = rte_socket_count();
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printf("number of sockets:%i", socket_count);
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// print lcore count
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lcore_count = rte_lcore_count();
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printf("number of lcores:%i", lcore_count);
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// test timer
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uint32_t seconds = 0;
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uint64_t cycles_old = rte_get_tsc_cycles();
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for (;;) {
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uint64_t hz = rte_get_tsc_hz();
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uint64_t cycles = rte_get_tsc_cycles();
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uint64_t delta_cycles = cycles - cycles_old;
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if (delta_cycles >= hz) {
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++seconds;
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cycles_old = cycles - (delta_cycles % hz);
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}
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printf("seconds : %u\n", seconds);
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}
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rte_eal_mp_wait_lcore();
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/* clean up the EAL */
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rte_eal_cleanup();
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return 0;
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}
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uint64_t int_divide(uint64_t a, uint64_t b) {
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uint64_t c = 0;
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while (a >= b) {
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a -= b;
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++c;
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}
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return c;
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} |