The copy of the kernel's top level include directory is not
required to build perf. We have both the linux-libc-headers and
perf's captured/copied headers for what it requires.
The copy of the kernel's headers is leading us to multiple smaller
fixes to ensure that the various .h files are in sync. We can
remove the copy and all of the sync checks, and perf still builds
and executes correctly.
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
