[Intel-gfx] [PATCH igt 03/24] lib: Enable automatic ftrace dumping for suspend failures

[Chris Wilson]

Quoting Chris Wilson (2017-08-14 21:18:27)
> Supplement dmesg with the function call graph to try and help identify
> why the suspend failed. On the other hand, it may be very noisy and
> perturb the system due to its overhead...

And it appears ftrace is not stable enough to use across CI.
Interesting.
-Chris