X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_eal%2Fcommon%2Feal_common_lcore.c;h=66d6bad1a7d70fac407b2bb8ae12ef5e4c73d540;hb=1cdb89c177269a0756f82ae3eb057fe34e205f41;hp=679cfe37485ad3893c4f130917b23bb7ffbad298;hpb=5c307ba2a5b14abb70dcc80a1283ba5a128262d9;p=dpdk.git

diff --git a/lib/librte_eal/common/eal_common_lcore.c b/lib/librte_eal/common/eal_common_lcore.c
index 679cfe3748..66d6bad1a7 100644
--- a/lib/librte_eal/common/eal_common_lcore.c
+++ b/lib/librte_eal/common/eal_common_lcore.c
@@ -12,15 +12,15 @@
 #include <rte_errno.h>
 #include <rte_lcore.h>
 #include <rte_log.h>
-#include <rte_spinlock.h>
+#include <rte_rwlock.h>
 
 #include "eal_memcfg.h"
 #include "eal_private.h"
 #include "eal_thread.h"
 
-unsigned int rte_get_master_lcore(void)
+unsigned int rte_get_main_lcore(void)
 {
-	return rte_eal_get_configuration()->master_lcore;
+	return rte_eal_get_configuration()->main_lcore;
 }
 
 unsigned int rte_lcore_count(void)
@@ -93,7 +93,7 @@ int rte_lcore_is_enabled(unsigned int lcore_id)
 	return cfg->lcore_role[lcore_id] == ROLE_RTE;
 }
 
-unsigned int rte_get_next_lcore(unsigned int i, int skip_master, int wrap)
+unsigned int rte_get_next_lcore(unsigned int i, int skip_main, int wrap)
 {
 	i++;
 	if (wrap)
@@ -101,7 +101,7 @@ unsigned int rte_get_next_lcore(unsigned int i, int skip_master, int wrap)
 
 	while (i < RTE_MAX_LCORE) {
 		if (!rte_lcore_is_enabled(i) ||
-		    (skip_master && (i == rte_get_master_lcore()))) {
+		    (skip_main && (i == rte_get_main_lcore()))) {
 			i++;
 			if (wrap)
 				i %= RTE_MAX_LCORE;
@@ -231,15 +231,128 @@ rte_socket_id_by_idx(unsigned int idx)
 	return config->numa_nodes[idx];
 }
 
-static rte_spinlock_t lcore_lock = RTE_SPINLOCK_INITIALIZER;
+static rte_rwlock_t lcore_lock = RTE_RWLOCK_INITIALIZER;
+struct lcore_callback {
+	TAILQ_ENTRY(lcore_callback) next;
+	char *name;
+	rte_lcore_init_cb init;
+	rte_lcore_uninit_cb uninit;
+	void *arg;
+};
+static TAILQ_HEAD(lcore_callbacks_head, lcore_callback) lcore_callbacks =
+	TAILQ_HEAD_INITIALIZER(lcore_callbacks);
+
+static int
+callback_init(struct lcore_callback *callback, unsigned int lcore_id)
+{
+	if (callback->init == NULL)
+		return 0;
+	RTE_LOG(DEBUG, EAL, "Call init for lcore callback %s, lcore_id %u\n",
+		callback->name, lcore_id);
+	return callback->init(lcore_id, callback->arg);
+}
+
+static void
+callback_uninit(struct lcore_callback *callback, unsigned int lcore_id)
+{
+	if (callback->uninit == NULL)
+		return;
+	RTE_LOG(DEBUG, EAL, "Call uninit for lcore callback %s, lcore_id %u\n",
+		callback->name, lcore_id);
+	callback->uninit(lcore_id, callback->arg);
+}
+
+static void
+free_callback(struct lcore_callback *callback)
+{
+	free(callback->name);
+	free(callback);
+}
+
+void *
+rte_lcore_callback_register(const char *name, rte_lcore_init_cb init,
+	rte_lcore_uninit_cb uninit, void *arg)
+{
+	struct rte_config *cfg = rte_eal_get_configuration();
+	struct lcore_callback *callback;
+	unsigned int lcore_id;
+
+	if (name == NULL)
+		return NULL;
+	callback = calloc(1, sizeof(*callback));
+	if (callback == NULL)
+		return NULL;
+	if (asprintf(&callback->name, "%s-%p", name, arg) == -1) {
+		free(callback);
+		return NULL;
+	}
+	callback->init = init;
+	callback->uninit = uninit;
+	callback->arg = arg;
+	rte_rwlock_write_lock(&lcore_lock);
+	if (callback->init == NULL)
+		goto no_init;
+	for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
+		if (cfg->lcore_role[lcore_id] == ROLE_OFF)
+			continue;
+		if (callback_init(callback, lcore_id) == 0)
+			continue;
+		/* Callback refused init for this lcore, uninitialize all
+		 * previous lcore.
+		 */
+		while (lcore_id-- != 0) {
+			if (cfg->lcore_role[lcore_id] == ROLE_OFF)
+				continue;
+			callback_uninit(callback, lcore_id);
+		}
+		free_callback(callback);
+		callback = NULL;
+		goto out;
+	}
+no_init:
+	TAILQ_INSERT_TAIL(&lcore_callbacks, callback, next);
+	RTE_LOG(DEBUG, EAL, "Registered new lcore callback %s (%sinit, %suninit).\n",
+		callback->name, callback->init == NULL ? "NO " : "",
+		callback->uninit == NULL ? "NO " : "");
+out:
+	rte_rwlock_write_unlock(&lcore_lock);
+	return callback;
+}
+
+void
+rte_lcore_callback_unregister(void *handle)
+{
+	struct rte_config *cfg = rte_eal_get_configuration();
+	struct lcore_callback *callback = handle;
+	unsigned int lcore_id;
+
+	if (callback == NULL)
+		return;
+	rte_rwlock_write_lock(&lcore_lock);
+	if (callback->uninit == NULL)
+		goto no_uninit;
+	for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
+		if (cfg->lcore_role[lcore_id] == ROLE_OFF)
+			continue;
+		callback_uninit(callback, lcore_id);
+	}
+no_uninit:
+	TAILQ_REMOVE(&lcore_callbacks, callback, next);
+	rte_rwlock_write_unlock(&lcore_lock);
+	RTE_LOG(DEBUG, EAL, "Unregistered lcore callback %s-%p.\n",
+		callback->name, callback->arg);
+	free_callback(callback);
+}
 
 unsigned int
 eal_lcore_non_eal_allocate(void)
 {
 	struct rte_config *cfg = rte_eal_get_configuration();
+	struct lcore_callback *callback;
+	struct lcore_callback *prev;
 	unsigned int lcore_id;
 
-	rte_spinlock_lock(&lcore_lock);
+	rte_rwlock_write_lock(&lcore_lock);
 	for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
 		if (cfg->lcore_role[lcore_id] != ROLE_OFF)
 			continue;
@@ -247,9 +360,30 @@ eal_lcore_non_eal_allocate(void)
 		cfg->lcore_count++;
 		break;
 	}
-	if (lcore_id == RTE_MAX_LCORE)
+	if (lcore_id == RTE_MAX_LCORE) {
 		RTE_LOG(DEBUG, EAL, "No lcore available.\n");
-	rte_spinlock_unlock(&lcore_lock);
+		goto out;
+	}
+	TAILQ_FOREACH(callback, &lcore_callbacks, next) {
+		if (callback_init(callback, lcore_id) == 0)
+			continue;
+		/* Callback refused init for this lcore, call uninit for all
+		 * previous callbacks.
+		 */
+		prev = TAILQ_PREV(callback, lcore_callbacks_head, next);
+		while (prev != NULL) {
+			callback_uninit(prev, lcore_id);
+			prev = TAILQ_PREV(prev, lcore_callbacks_head, next);
+		}
+		RTE_LOG(DEBUG, EAL, "Initialization refused for lcore %u.\n",
+			lcore_id);
+		cfg->lcore_role[lcore_id] = ROLE_OFF;
+		cfg->lcore_count--;
+		lcore_id = RTE_MAX_LCORE;
+		goto out;
+	}
+out:
+	rte_rwlock_write_unlock(&lcore_lock);
 	return lcore_id;
 }
 
@@ -257,11 +391,72 @@ void
 eal_lcore_non_eal_release(unsigned int lcore_id)
 {
 	struct rte_config *cfg = rte_eal_get_configuration();
+	struct lcore_callback *callback;
+
+	rte_rwlock_write_lock(&lcore_lock);
+	if (cfg->lcore_role[lcore_id] != ROLE_NON_EAL)
+		goto out;
+	TAILQ_FOREACH(callback, &lcore_callbacks, next)
+		callback_uninit(callback, lcore_id);
+	cfg->lcore_role[lcore_id] = ROLE_OFF;
+	cfg->lcore_count--;
+out:
+	rte_rwlock_write_unlock(&lcore_lock);
+}
 
-	rte_spinlock_lock(&lcore_lock);
-	if (cfg->lcore_role[lcore_id] == ROLE_NON_EAL) {
-		cfg->lcore_role[lcore_id] = ROLE_OFF;
-		cfg->lcore_count--;
+int
+rte_lcore_iterate(rte_lcore_iterate_cb cb, void *arg)
+{
+	struct rte_config *cfg = rte_eal_get_configuration();
+	unsigned int lcore_id;
+	int ret = 0;
+
+	rte_rwlock_read_lock(&lcore_lock);
+	for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
+		if (cfg->lcore_role[lcore_id] == ROLE_OFF)
+			continue;
+		ret = cb(lcore_id, arg);
+		if (ret != 0)
+			break;
 	}
-	rte_spinlock_unlock(&lcore_lock);
+	rte_rwlock_read_unlock(&lcore_lock);
+	return ret;
+}
+
+static int
+lcore_dump_cb(unsigned int lcore_id, void *arg)
+{
+	struct rte_config *cfg = rte_eal_get_configuration();
+	char cpuset[RTE_CPU_AFFINITY_STR_LEN];
+	const char *role;
+	FILE *f = arg;
+	int ret;
+
+	switch (cfg->lcore_role[lcore_id]) {
+	case ROLE_RTE:
+		role = "RTE";
+		break;
+	case ROLE_SERVICE:
+		role = "SERVICE";
+		break;
+	case ROLE_NON_EAL:
+		role = "NON_EAL";
+		break;
+	default:
+		role = "UNKNOWN";
+		break;
+	}
+
+	ret = eal_thread_dump_affinity(&lcore_config[lcore_id].cpuset, cpuset,
+		sizeof(cpuset));
+	fprintf(f, "lcore %u, socket %u, role %s, cpuset %s%s\n", lcore_id,
+		rte_lcore_to_socket_id(lcore_id), role, cpuset,
+		ret == 0 ? "" : "...");
+	return 0;
+}
+
+void
+rte_lcore_dump(FILE *f)
+{
+	rte_lcore_iterate(lcore_dump_cb, f);
 }