Hi,

On 05.10.2018 9:23, Namhyung Kim wrote:
<SNIP>
> On Wed, Oct 03, 2018 at 07:01:26PM +0300, Alexey Budankov wrote:
<SNIP>
>> +#ifdef HAVE_AIO_SUPPORT
>> +    map->nr_cblocks = mp->nr_cblocks;
>> +    if (map->nr_cblocks) {
>> +            map->data = malloc(perf_mmap__mmap_len(map));
>> +            if (!map->data) {
>> +                    pr_debug2("failed to allocate data buffer, error %d\n",
>> +                                    errno);
> 
> I guess the error code is not very useful than the message.  But in
> this case it's probably ENOMEM so we can simply omit it.

Possibly like this:
                        pr_debug2("failed to allocate data buffer, error %d: 
%s\n",
                                        errno, strerror(errno));
would be more informative.

Thanks,
Alexey

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