rcu: grplo/grphi just records CPU number

The ->grplo and ->grphi fields store the lowest and highest CPU number
covered by to a rcu_node structure, which is not the group number.
This commit therefore adjusts these fields' comments to match reality.

Signed-off-by: Wei Yang <richard.weiyang@linux.alibaba.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Wei Yang 2020-06-12 10:07:53 +08:00 • committed by Paul E. McKenney
commit a2dae43088