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Subject[PATCH 03/19] perf record: Improve write_output error message
Date
Improve the error message from write_output() to say
what failed to write and give the error number.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
tools/perf/builtin-record.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 92ca541..d269dfa 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -88,7 +88,7 @@ static int write_output(struct perf_record *rec, void *buf, size_t size)
int ret = write(rec->output, buf, size);

if (ret < 0) {
- pr_err("failed to write\n");
+ pr_err("failed to write perf data, error: %m\n");
return -1;
}

--
1.7.11.7


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