[PATCH bpf-next] bpf_load: add map name to load_maps error message

[Shannon Nelson <shannon.nelson@oracle.com>]

To help when debugging bpf/xdp load issues, have the load_map()
error message include the number and name of the map that
failed.

Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
---
 samples/bpf/bpf_load.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/samples/bpf/bpf_load.c b/samples/bpf/bpf_load.c
index 89161c9..5de0357 100644
--- a/samples/bpf/bpf_load.c
+++ b/samples/bpf/bpf_load.c
@@ -282,8 +282,8 @@ static int load_maps(struct bpf_map_data *maps, int nr_maps,
 							numa_node);
 		}
 		if (map_fd[i] < 0) {
-			printf("failed to create a map: %d %s\n",
-			       errno, strerror(errno));
+			printf("failed to create map %d (%s): %d %s\n",
+			       i, maps[i].name, errno, strerror(errno));
 			return 1;
 		}
 		maps[i].fd = map_fd[i];
-- 
2.7.4