X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_eal%2Fcommon%2Feal_common_lcore.c;h=1d05234192ba1d4032a3dae6ff48e0d44c381bb7;hb=b2a0b9f0447a64dd03aa210c49d70572077555ea;hp=7724fa43342e0e6108520993779221ff09514615;hpb=369991d997e4abdee355e19ffbb41a4d246cafa2;p=dpdk.git

diff --git a/lib/librte_eal/common/eal_common_lcore.c b/lib/librte_eal/common/eal_common_lcore.c
index 7724fa4334..1d05234192 100644
--- a/lib/librte_eal/common/eal_common_lcore.c
+++ b/lib/librte_eal/common/eal_common_lcore.c
@@ -5,8 +5,8 @@
 #include <unistd.h>
 #include <limits.h>
 #include <string.h>
-#include <dirent.h>
 
+#include <rte_errno.h>
 #include <rte_log.h>
 #include <rte_eal.h>
 #include <rte_lcore.h>
@@ -16,6 +16,108 @@
 #include "eal_private.h"
 #include "eal_thread.h"
 
+unsigned int rte_get_master_lcore(void)
+{
+	return rte_eal_get_configuration()->master_lcore;
+}
+
+unsigned int rte_lcore_count(void)
+{
+	return rte_eal_get_configuration()->lcore_count;
+}
+
+int rte_lcore_index(int lcore_id)
+{
+	if (unlikely(lcore_id >= RTE_MAX_LCORE))
+		return -1;
+
+	if (lcore_id < 0) {
+		if (rte_lcore_id() == LCORE_ID_ANY)
+			return -1;
+
+		lcore_id = (int)rte_lcore_id();
+	}
+
+	return lcore_config[lcore_id].core_index;
+}
+
+int rte_lcore_to_cpu_id(int lcore_id)
+{
+	if (unlikely(lcore_id >= RTE_MAX_LCORE))
+		return -1;
+
+	if (lcore_id < 0) {
+		if (rte_lcore_id() == LCORE_ID_ANY)
+			return -1;
+
+		lcore_id = (int)rte_lcore_id();
+	}
+
+	return lcore_config[lcore_id].core_id;
+}
+
+rte_cpuset_t rte_lcore_cpuset(unsigned int lcore_id)
+{
+	return lcore_config[lcore_id].cpuset;
+}
+
+enum rte_lcore_role_t
+rte_eal_lcore_role(unsigned int lcore_id)
+{
+	struct rte_config *cfg = rte_eal_get_configuration();
+
+	if (lcore_id >= RTE_MAX_LCORE)
+		return ROLE_OFF;
+	return cfg->lcore_role[lcore_id];
+}
+
+int rte_lcore_is_enabled(unsigned int lcore_id)
+{
+	struct rte_config *cfg = rte_eal_get_configuration();
+
+	if (lcore_id >= RTE_MAX_LCORE)
+		return 0;
+	return cfg->lcore_role[lcore_id] == ROLE_RTE;
+}
+
+unsigned int rte_get_next_lcore(unsigned int i, int skip_master, int wrap)
+{
+	i++;
+	if (wrap)
+		i %= RTE_MAX_LCORE;
+
+	while (i < RTE_MAX_LCORE) {
+		if (!rte_lcore_is_enabled(i) ||
+		    (skip_master && (i == rte_get_master_lcore()))) {
+			i++;
+			if (wrap)
+				i %= RTE_MAX_LCORE;
+			continue;
+		}
+		break;
+	}
+	return i;
+}
+
+unsigned int
+rte_lcore_to_socket_id(unsigned int lcore_id)
+{
+	return lcore_config[lcore_id].socket_id;
+}
+
+static int
+socket_id_cmp(const void *a, const void *b)
+{
+	const int *lcore_id_a = a;
+	const int *lcore_id_b = b;
+
+	if (*lcore_id_a < *lcore_id_b)
+		return -1;
+	if (*lcore_id_a > *lcore_id_b)
+		return 1;
+	return 0;
+}
+
 /*
  * Parse /sys/devices/system/cpu to get the number of physical and logical
  * processors on the machine. The function will fill the cpu_info
@@ -28,6 +130,8 @@ rte_eal_cpu_init(void)
 	struct rte_config *config = rte_eal_get_configuration();
 	unsigned lcore_id;
 	unsigned count = 0;
+	unsigned int socket_id, prev_socket_id;
+	int lcore_to_socket_id[RTE_MAX_LCORE];
 
 	/*
 	 * Parse the maximum set of logical cores, detect the subset of running
@@ -39,9 +143,11 @@ rte_eal_cpu_init(void)
 		/* init cpuset for per lcore config */
 		CPU_ZERO(&lcore_config[lcore_id].cpuset);
 
-		/* in 1:1 mapping, record related cpu detected state */
-		lcore_config[lcore_id].detected = eal_cpu_detected(lcore_id);
-		if (lcore_config[lcore_id].detected == 0) {
+		/* find socket first */
+		socket_id = eal_cpu_socket_id(lcore_id);
+		lcore_to_socket_id[lcore_id] = socket_id;
+
+		if (eal_cpu_detected(lcore_id) == 0) {
 			config->lcore_role[lcore_id] = ROLE_OFF;
 			lcore_config[lcore_id].core_index = -1;
 			continue;
@@ -54,24 +160,21 @@ rte_eal_cpu_init(void)
 		config->lcore_role[lcore_id] = ROLE_RTE;
 		lcore_config[lcore_id].core_role = ROLE_RTE;
 		lcore_config[lcore_id].core_id = eal_cpu_core_id(lcore_id);
-		lcore_config[lcore_id].socket_id = eal_cpu_socket_id(lcore_id);
-		if (lcore_config[lcore_id].socket_id >= RTE_MAX_NUMA_NODES) {
-#ifdef RTE_EAL_ALLOW_INV_SOCKET_ID
-			lcore_config[lcore_id].socket_id = 0;
-#else
-			RTE_LOG(ERR, EAL, "Socket ID (%u) is greater than "
-				"RTE_MAX_NUMA_NODES (%d)\n",
-				lcore_config[lcore_id].socket_id,
-				RTE_MAX_NUMA_NODES);
-			return -1;
-#endif
-		}
+		lcore_config[lcore_id].socket_id = socket_id;
 		RTE_LOG(DEBUG, EAL, "Detected lcore %u as "
 				"core %u on socket %u\n",
 				lcore_id, lcore_config[lcore_id].core_id,
 				lcore_config[lcore_id].socket_id);
 		count++;
 	}
+	for (; lcore_id < CPU_SETSIZE; lcore_id++) {
+		if (eal_cpu_detected(lcore_id) == 0)
+			continue;
+		RTE_LOG(DEBUG, EAL, "Skipped lcore %u as core %u on socket %u\n",
+			lcore_id, eal_cpu_core_id(lcore_id),
+			eal_cpu_socket_id(lcore_id));
+	}
+
 	/* Set the count of enabled logical cores of the EAL configuration */
 	config->lcore_count = count;
 	RTE_LOG(DEBUG, EAL,
@@ -79,5 +182,38 @@ rte_eal_cpu_init(void)
 		RTE_MAX_LCORE);
 	RTE_LOG(INFO, EAL, "Detected %u lcore(s)\n", config->lcore_count);
 
+	/* sort all socket id's in ascending order */
+	qsort(lcore_to_socket_id, RTE_DIM(lcore_to_socket_id),
+			sizeof(lcore_to_socket_id[0]), socket_id_cmp);
+
+	prev_socket_id = -1;
+	config->numa_node_count = 0;
+	for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
+		socket_id = lcore_to_socket_id[lcore_id];
+		if (socket_id != prev_socket_id)
+			config->numa_nodes[config->numa_node_count++] =
+					socket_id;
+		prev_socket_id = socket_id;
+	}
+	RTE_LOG(INFO, EAL, "Detected %u NUMA nodes\n", config->numa_node_count);
+
 	return 0;
 }
+
+unsigned int
+rte_socket_count(void)
+{
+	const struct rte_config *config = rte_eal_get_configuration();
+	return config->numa_node_count;
+}
+
+int
+rte_socket_id_by_idx(unsigned int idx)
+{
+	const struct rte_config *config = rte_eal_get_configuration();
+	if (idx >= config->numa_node_count) {
+		rte_errno = EINVAL;
+		return -1;
+	}
+	return config->numa_nodes[idx];
+}