[tip: core/rcu] rcu: grplo/grphi just records CPU number

[tip-bot2 for Wei Yang]

The following commit has been merged into the core/rcu branch of tip:

Commit-ID:     a2dae43088d51c4869e7fa91ca09bcc890e277fc
Gitweb:        https://git.kernel.org/tip/a2dae43088d51c4869e7fa91ca09bcc890e277fc
Author:        Wei Yang <richard.weiyang@xxxxxxxxxxxxxxxxx>
AuthorDate:    Fri, 12 Jun 2020 10:07:53 +08:00
Committer:     Paul E. McKenney <paulmck@xxxxxxxxxx>
CommitterDate: Mon, 29 Jun 2020 11:58:51 -07:00

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@xxxxxxxxxxxxxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
---
 kernel/rcu/tree.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index 09ec93b..9f903f5 100644
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -73,8 +73,8 @@ struct rcu_node {
 	unsigned long ffmask;	/* Fully functional CPUs. */
 	unsigned long grpmask;	/* Mask to apply to parent qsmask. */
 				/*  Only one bit will be set in this mask. */
-	int	grplo;		/* lowest-numbered CPU or group here. */
-	int	grphi;		/* highest-numbered CPU or group here. */
+	int	grplo;		/* lowest-numbered CPU here. */
+	int	grphi;		/* highest-numbered CPU here. */
 	u8	grpnum;		/* CPU/group number for next level up. */
 	u8	level;		/* root is at level 0. */
 	bool	wait_blkd_tasks;/* Necessary to wait for blocked tasks to */