[Intel-gfx] [PATCH] drm/i915/selftests: Log test and subtest names for easier debugging

[Chris Wilson]

Quoting Tvrtko Ursulin (2018-11-20 17:58:33)
> 
> On 20/11/2018 17:33, Chris Wilson wrote:
> > Quoting Tvrtko Ursulin (2018-11-20 17:28:39)
> >> From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> >>
> >> Since pr_debug is not printed by default, change both test and subtest
> >> log messages to pr_info so they are always logged.
> > 
> > I just use the trace... As when the test fails we say which subtest
> > failed, and hopefully include more details in the error message, and
> > recent history is in the trace dumped when considered relevant.
> 
> Fair. My thinking was simply to leave more breadcrumbs if the machine 
> died in the middle of a subtest.

Thinking more about it, the easiest option would be to actually enable
pr_debug, iirc a config option.

However, the only time we don't get breadcrumbs is if the machine
spontaneously combusts, which we are told is a mere figment of our
imagination.  Most often I wonder if we simply do not get the death
throes - adding logging won't help if we don't capture it. For the true
spontaneous combustion, it's pretty random and all I can think of
suggesting are more sanity checks to try and catch inconsistencies early.
-Chris