[PATCH core] perf data: Adding error message if perf_data__create_dir fails

[Alexey Bayduraev]

There is no notification about data directory creation failure. Add it.

Signed-off-by: Alexey Bayduraev <alexey.v.bayduraev@xxxxxxxxxxxxxxx>
---
 tools/perf/builtin-record.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 0bc6529814b2..0306d5911de2 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -1186,8 +1186,10 @@ static int record__mmap_evlist(struct record *rec,
 
 	if (record__threads_enabled(rec)) {
 		ret = perf_data__create_dir(&rec->data, evlist->core.nr_mmaps);
-		if (ret)
+		if (ret) {
+			pr_err("Failed to create data directory: %s\n", strerror(errno));
 			return ret;
+		}
 		for (i = 0; i < evlist->core.nr_mmaps; i++) {
 			if (evlist->mmap)
 				evlist->mmap[i].file = &rec->data.dir.files[i];
-- 
2.19.0