[RFC 3/8] eal: warn if thread name is truncated

[Stephen Hemminger]

Thread name is very short 16 characters and therefore the name
dpdk-worker-%d will overflow with more than 9999 worker cores.
Error should be non-fatal since name only matters for debug.

Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
---
 lib/eal/linux/eal.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/eal/linux/eal.c b/lib/eal/linux/eal.c
index b12f325ddd..d848de03d8 100644
--- a/lib/eal/linux/eal.c
+++ b/lib/eal/linux/eal.c
@@ -863,8 +863,10 @@ rte_eal_init(int argc, char **argv)
 			rte_panic("Cannot create thread\n");
 
 		/* Set thread_name for aid in debugging. */
-		snprintf(thread_name, sizeof(thread_name),
-			"dpdk-worker%d", i);
+		ret = snprintf(thread_name, sizeof(thread_name), "dpdk-worker%d", i);
+		if (ret >= RTE_THREAD_NAME_SIZE)
+			EAL_LOG(INFO, "Worker thread name %s truncated", thread_name);
+
 		rte_thread_set_name(lcore_config[i].thread_id, thread_name);
 
 		ret = rte_thread_set_affinity_by_id(lcore_config[i].thread_id,
-- 
2.51.0