Previously, futex code of McKerenl was called by mccontrol,
but there ware some problems with this method.
(Mainly, location of McKernel image on memory)
Call futex code in mcctrl instead of the one in McKernel image,
giving the following benefits:
1. Not relying on shared kernel virtual address space with Linux any more
2. The cpu id store / retrieve is not needed and resulting in the code
Change-Id: Ic40929b64a655b270c435859fa287fedb713ee5c
refe: #1428
In order to speed up test bot work it would be helpful to check for
identical build outputs and skip tests if required.
This removes most use of the install path in c code:
- ql_mpi uses /proc/self/exe and looks for talker/server in same
directory as itself
- mcexec looks for libihk.so in /proc/self/maps and use that path for
LD_PRELOAD prefix path
- rootfsdir is not used right now but until a better fix happens just
hardcode it, someone who wants to change it can set it through cmake
There is one last occurence of the install directory, MCEXEC_PATH in
mcctrl's binfmt code, for which the build system will just overwrite it
to a constant string at build time instead of trying to remove it too
hard. It would be possible to pass it as a kernel parameter or look for
mcexec in PATH but this is too much work for now.
Change-Id: I5d1352bc5748a1ea10dcae4be630f30a07609296
