コード例 #1
0
ファイル: test_pmd_perf.c プロジェクト: 0day-ci/dpdk
static int
exec_burst(uint32_t flags, int lcore)
{
	unsigned i, portid, nb_tx = 0;
	struct lcore_conf *conf;
	uint32_t pkt_per_port;
	int num, idx = 0;
	int diff_tsc;

	conf = &lcore_conf[lcore];

	pkt_per_port = MAX_TRAFFIC_BURST;
	num = pkt_per_port;

	rte_atomic64_init(&start);

	/* start polling thread, but not actually poll yet */
	rte_eal_remote_launch(poll_burst,
			      (void *)&pkt_per_port, lcore);

	/* Only when polling first */
	if (flags == SC_BURST_POLL_FIRST)
		rte_atomic64_set(&start, 1);

	/* start xmit */
	while (num) {
		nb_tx = RTE_MIN(MAX_PKT_BURST, num);
		for (i = 0; i < conf->nb_ports; i++) {
			portid = conf->portlist[i];
			rte_eth_tx_burst(portid, 0,
					 &tx_burst[idx], nb_tx);
			idx += nb_tx;
		}
		num -= nb_tx;
	}

	sleep(5);

	/* only when polling second  */
	if (flags == SC_BURST_XMIT_FIRST)
		rte_atomic64_set(&start, 1);

	/* wait for polling finished */
	diff_tsc = rte_eal_wait_lcore(lcore);
	if (diff_tsc < 0) {
		printf("exec_burst: Failed to measure cycles per packet\n");
		return -1;
	}

	printf("Result: %d cycles per packet\n", diff_tsc);

	return 0;
}
コード例 #2
0
ファイル: lthread_mutex.c プロジェクト: DrenfongWong/dpdk
/*
 * Create a mutex
 */
int
lthread_mutex_init(char *name, struct lthread_mutex **mutex,
		   __rte_unused const struct lthread_mutexattr *attr)
{
	struct lthread_mutex *m;

	if (mutex == NULL)
		return POSIX_ERRNO(EINVAL);


	m = _lthread_objcache_alloc((THIS_SCHED)->mutex_cache);
	if (m == NULL)
		return POSIX_ERRNO(EAGAIN);

	m->blocked = _lthread_queue_create("blocked queue");
	if (m->blocked == NULL) {
		_lthread_objcache_free((THIS_SCHED)->mutex_cache, m);
		return POSIX_ERRNO(EAGAIN);
	}

	if (name == NULL)
		strncpy(m->name, "no name", sizeof(m->name));
	else
		strncpy(m->name, name, sizeof(m->name));
	m->name[sizeof(m->name)-1] = 0;

	m->root_sched = THIS_SCHED;
	m->owner = NULL;

	rte_atomic64_init(&m->count);

	DIAG_CREATE_EVENT(m, LT_DIAG_MUTEX_CREATE);
	/* success */
	(*mutex) = m;
	return 0;
}