runtime: default to using procfs for the transport
Using debugfs for the transport results in a multitude of bugs when
running stap modules in parallel. The bugs include debugfs outright
failing, warnings hit in fs/inode.c, and kernel panics. Since procfs has
been more stable over the years, default to using it for the transport
instead of debugfs. Using procfs resolves the issues faced with debugfs.
git://sourceware.org / systemtap.git / commit