[PATCH v4 3/5] graph: add stats for node specific errors

[<pbhagavatula@marvell.com>]

From: Pavan Nikhilesh <pbhagavatula@marvell.com>

Add support for retrieving/printing stats for node specific
errors using rte_graph_cluster_stats_get().

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
---
 lib/graph/graph_stats.c | 79 ++++++++++++++++++++++++++++++++++++++++-
 lib/graph/rte_graph.h   |  4 +++
 2 files changed, 82 insertions(+), 1 deletion(-)

diff --git a/lib/graph/graph_stats.c b/lib/graph/graph_stats.c
index d71451a17b..1ac0a6797f 100644
--- a/lib/graph/graph_stats.c
+++ b/lib/graph/graph_stats.c
@@ -121,6 +121,25 @@ print_node(FILE *f, const struct rte_graph_cluster_node_stats *stat, bool dispat
 	}
 }
 
+static inline void
+print_err(FILE *f, const struct rte_graph_cluster_node_stats *stat, bool dispatch)
+{
+	int i;
+
+	if (dispatch) {
+		for (i = 0; i < stat->node_error_cntrs; i++)
+			fprintf(f,
+				"|\t%-24s|%15s|%-15" PRIu64 "|%15s|%15s|%15s|%15s|%15s|%11.4s|\n",
+				stat->node_error_desc[i], "", stat->node_error_count[i], "", "", "",
+				"", "", "");
+	} else {
+		for (i = 0; i < stat->node_error_cntrs; i++)
+			fprintf(f, "|\t%-24s|%15s|%-15" PRIu64 "|%15s|%15.3s|%15.6s|%11.4s|\n",
+				stat->node_error_desc[i], "", stat->node_error_count[i], "", "", "",
+				"");
+	}
+}
+
 static int
 graph_cluster_stats_cb(bool dispatch, bool is_first, bool is_last, void *cookie,
 		       const struct rte_graph_cluster_node_stats *stat)
@@ -129,8 +148,11 @@ graph_cluster_stats_cb(bool dispatch, bool is_first, bool is_last, void *cookie,
 
 	if (unlikely(is_first))
 		print_banner(f, dispatch);
-	if (stat->objs)
+	if (stat->objs) {
 		print_node(f, stat, dispatch);
+		if (stat->node_error_cntrs)
+			print_err(f, stat, dispatch);
+	}
 	if (unlikely(is_last)) {
 		if (dispatch)
 			boarder_model_dispatch();
@@ -203,6 +225,7 @@ stats_mem_populate(struct rte_graph_cluster_stats **stats_in,
 	struct cluster_node *cluster;
 	struct rte_node *node;
 	rte_node_t count;
+	uint8_t i;
 
 	cluster = stats->clusters;
 
@@ -240,6 +263,36 @@ stats_mem_populate(struct rte_graph_cluster_stats **stats_in,
 		SET_ERR_JMP(ENOENT, free, "Failed to find node %s in graph %s",
 			    graph_node->node->name, graph->name);
 	cluster->nodes[cluster->nb_nodes++] = node;
+	if (graph_node->node->errs) {
+		cluster->stat.node_error_cntrs = graph_node->node->errs->nb_errors;
+		cluster->stat.node_error_count = rte_zmalloc_socket(
+			NULL, sizeof(uint64_t) * graph_node->node->errs->nb_errors,
+			RTE_CACHE_LINE_SIZE, stats->socket_id);
+		if (cluster->stat.node_error_count == NULL)
+			SET_ERR_JMP(ENOMEM, free, "Failed to allocate memory node %s graph %s",
+				    graph_node->node->name, graph->name);
+
+		cluster->stat.node_error_desc = rte_zmalloc_socket(
+			NULL, sizeof(RTE_NODE_ERROR_DESC_SIZE) * graph_node->node->errs->nb_errors,
+			RTE_CACHE_LINE_SIZE, stats->socket_id);
+		if (cluster->stat.node_error_desc == NULL) {
+			rte_free(cluster->stat.node_error_count);
+			SET_ERR_JMP(ENOMEM, free, "Failed to allocate memory node %s graph %s",
+				    graph_node->node->name, graph->name);
+		}
+
+		for (i = 0; i < cluster->stat.node_error_cntrs; i++) {
+			if (rte_strscpy(cluster->stat.node_error_desc[i],
+					graph_node->node->errs->err_desc[i],
+					RTE_NODE_ERROR_DESC_SIZE) < 0) {
+				rte_free(cluster->stat.node_error_count);
+				rte_free(cluster->stat.node_error_desc);
+				SET_ERR_JMP(E2BIG, free,
+					    "Error description overflow node %s graph %s",
+					    graph_node->node->name, graph->name);
+			}
+		}
+	}
 
 	stats->sz += stats->cluster_node_size;
 	stats->max_nodes++;
@@ -388,6 +441,18 @@ rte_graph_cluster_stats_create(const struct rte_graph_cluster_stats_param *prm)
 void
 rte_graph_cluster_stats_destroy(struct rte_graph_cluster_stats *stat)
 {
+	struct cluster_node *cluster;
+	rte_node_t count;
+
+	cluster = stat->clusters;
+	for (count = 0; count < stat->max_nodes; count++) {
+		if (cluster->stat.node_error_cntrs) {
+			rte_free(cluster->stat.node_error_count);
+			rte_free(cluster->stat.node_error_desc);
+		}
+
+		cluster = RTE_PTR_ADD(cluster, stat->cluster_node_size);
+	}
 	return rte_free(stat);
 }
 
@@ -399,7 +464,10 @@ cluster_node_arregate_stats(struct cluster_node *cluster, bool dispatch)
 	uint64_t sched_objs = 0, sched_fail = 0;
 	struct rte_node *node;
 	rte_node_t count;
+	uint64_t *err;
+	uint8_t i;
 
+	memset(stat->node_error_count, 0, sizeof(uint64_t) * stat->node_error_cntrs);
 	for (count = 0; count < cluster->nb_nodes; count++) {
 		node = cluster->nodes[count];
 
@@ -412,6 +480,12 @@ cluster_node_arregate_stats(struct cluster_node *cluster, bool dispatch)
 		objs += node->total_objs;
 		cycles += node->total_cycles;
 		realloc_count += node->realloc_count;
+
+		if (node->err_off == 0)
+			continue;
+		err = RTE_PTR_ADD(node, node->err_off);
+		for (i = 0; i < stat->node_error_cntrs; i++)
+			stat->node_error_count[i] += err[i];
 	}
 
 	stat->calls = calls;
@@ -464,6 +538,7 @@ rte_graph_cluster_stats_reset(struct rte_graph_cluster_stats *stat)
 {
 	struct cluster_node *cluster;
 	rte_node_t count;
+	uint8_t i;
 
 	cluster = stat->clusters;
 
@@ -479,6 +554,8 @@ rte_graph_cluster_stats_reset(struct rte_graph_cluster_stats *stat)
 		node->prev_objs = 0;
 		node->prev_cycles = 0;
 		node->realloc_count = 0;
+		for (i = 0; i < node->node_error_cntrs; i++)
+			node->node_error_count[i] = 0;
 		cluster = RTE_PTR_ADD(cluster, stat->cluster_node_size);
 	}
 }
diff --git a/lib/graph/rte_graph.h b/lib/graph/rte_graph.h
index b28143d737..12b6461cf5 100644
--- a/lib/graph/rte_graph.h
+++ b/lib/graph/rte_graph.h
@@ -223,6 +223,10 @@ struct __rte_cache_aligned rte_graph_cluster_node_stats {
 
 	uint64_t realloc_count; /**< Realloc count. */
 
+	uint8_t node_error_cntrs;			   /**< Number of Node error counters. */
+	char (*node_error_desc)[RTE_NODE_ERROR_DESC_SIZE]; /**< Names of the Node error counters. */
+	uint64_t *node_error_count;			   /**< Total error count per each error. */
+
 	rte_node_t id;	/**< Node identifier of stats. */
 	uint64_t hz;	/**< Cycles per seconds. */
 	char name[RTE_NODE_NAMESIZE];	/**< Name of the node. */
-- 
2.25.1