tree 00928ac72eb21023258af59bc38f74619133307a
parent 06d90d3d4b35815027b7b7a7fc48167d497d2de3
author Sasha Goldshtein <goldshtn@gmail.com> 1467308787 -0700
committer Sasha Goldshtein <goldshtn@gmail.com> 1467308787 -0700

cpudist: Protect against potentially negative time deltas

It seems from experimentation that the calculated timestamps between
on- and off-CPU switch events can produce incorrect results, with a
later event having a smaller timestamp. Discard events when the
resulting delta time would be negative.