Leverage parallel tests in kselftests using all the available cpus.
We tested this in tuxsuite and locally extensively and it seems it's ready for prime time.
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>