[igt-dev] [Intel-gfx] [PATCH i-g-t] intel-gpu-top: Support for client stats

[Tvrtko Ursulin]

On 21/01/2021 21:34, Chris Wilson wrote:
> Quoting Tvrtko Ursulin (2021-01-21 18:10:05)
>> +static struct clients *init_clients(const char *drm_card)
>> +{
>> +       struct clients *clients = malloc(sizeof(*clients));
>> +       const char *slash;
>> +       ssize_t ret;
>> +
>> +       memset(clients, 0, sizeof(*clients));
>> +
>> +       if (drm_card) {
>> +               slash = rindex(drm_card, '/');
>> +               assert(slash);
>> +       } else {
>> +               slash = "card0";
>> +       }
>> +
>> +       ret = snprintf(clients->sysfs_root, sizeof(clients->sysfs_root),
>> +                      "/sys/class/drm/%s/clients/", slash);
>> +       assert(ret > 0 && ret < sizeof(clients->sysfs_root));
> 
> Afaict, igt_device_card_match_pci et al are not guaranteed to fill in
> dev->drm_card and may leave it blank instead of finding the
> corresponding /dev/dri/cardN.

I did the rest but this is giving me trouble - can't see locally that it 
doesn't populate it. Do you know how to trigger that?

Regards,

Tvrtko