[Intel-gfx] [PATCH i-g-t] kms_busy: Use igt_waitchildren_timeout()

[Chris Wilson]

Quoting Daniel Vetter (2019-04-01 08:32:27)
> On Sat, Mar 30, 2019 at 11:54:48PM +0000, Chris Wilson wrote:
> > Replace the convoluted raising of SIGALRM from the child with an
> > interruptible sleep in the parent with the equivalent and far more
> > natural igt_waitchildren_timeout().
> > 
> > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103182
> > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> 
> I guess v2 missing here somewhere? Either way nice cleanup!

gcc pointed out the dead code that I could remove.
-Chris