linux-kernel - [PATCH core] perf data: Adding error message if perf_data__create

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Message-Id: <20220218152341.5197-1-alexey.v.bayduraev@linux.intel.com>
Date:   Fri, 18 Feb 2022 18:23:40 +0300
From:   Alexey Bayduraev <alexey.v.bayduraev@...ux.intel.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Jiri Olsa <jolsa@...hat.com>, Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Alexander Antonov <alexander.antonov@...ux.intel.com>,
        Alexei Budankov <abudankov@...wei.com>
Subject: [PATCH core] perf data: Adding error message if perf_data__create_dir fails

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

Signed-off-by: Alexey Bayduraev <alexey.v.bayduraev@...ux.intel.com>
---
 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