Using sudo in org-babel

Here's a simple way of using sudo in org-babel:

#+NAME: just-open
#+BEGIN_SRC shell :tangle no :dir /sudo::~mark/writing
exec 2>&1
mkdir -p perf && cd perf
/home/mark/.guix-profile/bin/perf stat -e 'block:*' ../open-perf
#+END_SRC

Use :tangle no to exlude this snippet from being tangled
Use :dir /sudo::~mark/writing to activate TRAMP (/sudo) and set the current path that is to be used. Note: paths relative to the document didn't work out for me
Use exec 2>& to redirect stderr to stdout to capture the entire output of your command, not just stdout
Finally use the full path to the command, because your user environment may be different then the sudo environment you're running in.

That's it. Tested on org-mode 9 and emacs 25.3.