On Fri, Oct 18, 2013 at 03:29:00PM +0300, Adrian Hunter wrote:
> Improve the error message from write_output() to say
> what failed to write and give the error number.
>
> Signed-off-by: Adrian Hunter <adrian.hun...@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");
is this some kind of format magic? ;-) you wanted
to print out 'ret' value, right?
jirka
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