If you see any sort of evidence that this would hold true I really like
to know.
I haven't found any evidence. When I rebuilt the kernels from scratch
(exporting them into an empty directory using cg-export), I got
reliable data and bisected down to a patch that probably was a problem.
I will redo those tests but rebuilding in place after each bisection
(with -f added to all the git checkout uses in git-bisect-script) and
see whether I get the same results. If I don't, it could be due to
git or git-bisect (but not so likely with the -f switch) or to the
build system. Will keep you and Junio posted.
-Sanjoy