On Tue, 26 May 2020, Emanuele Giuseppe Esposito wrote:

Add kunit tests to extensively test the stats_fs API functionality.

I've added in the kunit-related folks.
 

In order to run them, the kernel .config must set CONFIG_KUNIT=y
and a new .kunitconfig file must be created with CONFIG_STATS_FS=y
and CONFIG_STATS_FS_TEST=y

It looks like CONFIG_STATS_FS is built-in, but it exports
much of the functionality you are testing.  However could the
tests also be built as a module (i.e. make CONFIG_STATS_FS_TEST
a tristate variable)? To test this you'd need to specify
CONFIG_KUNIT=m and CONFIG_STATS_FS_TEST=m, and testing would
simply be a case of "modprobe"ing the stats fs module and collecting
results in /sys/kernel/debug/kunit/<module_name> (rather 
than running kunit.py). Are you relying on unexported internals in
the the tests that would prevent building them as a module?

Thanks!

Alan