This eases testing of option values inside the code. This instance
is implemented as the read-only copy of the obtained 'options' object,
so callers won't be able to modify its contents.
Signed-off-by: Eygene Ryabinkin <rea@codelabs.ru>
This is handy when we're debugging the thread locks: we can try to
understand which thread does what and how it was called.
Signed-off-by: Eygene Ryabinkin <rea@codelabs.ru>
