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Message-Id: <1382099356-4918-4-git-send-email-adrian.hunter@intel.com>
Date: Fri, 18 Oct 2013 15:29:00 +0300
From: Adrian Hunter <adrian.hunter@...el.com>
To: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
David Ahern <dsahern@...il.com>,
Frederic Weisbecker <fweisbec@...il.com>,
Jiri Olsa <jolsa@...hat.com>, Mike Galbraith <efault@....de>,
Namhyung Kim <namhyung@...il.com>,
Paul Mackerras <paulus@...ba.org>,
Stephane Eranian <eranian@...gle.com>
Subject: [PATCH 03/19] perf record: Improve write_output error message
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@...el.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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