Daniel Jordan looks at
ktest on the Oracle Linux blog. “Where ktest is especially
useful, though, is in its ability to do these things for each patch in a
series, thereby freeing you from a significant amount of tedium. For your
chosen configs, the series will be cleanly bisectable and won’t trigger
upstream build bots with easily avoided errors and warnings
mid-series. (Those bots are nice for less common configs though.) Code
reviewers’ moods improve too because each patch will stand alone with all
the necessary code.“

Source: LWN.net – Jordan: ktest: Automated Testing For Kernel Programmers