The following commit has been merged into the core/rcu branch of tip:
Commit-ID: 7a0c2b0940c13a06573320ab7118375b35feef8b
Gitweb: https://git.kernel.org/tip/7a0c2b0940c13a06573320ab7118375b35feef8b
Author: Wei Yang <richard.weiyang@xxxxxxxxxxxxxxxxx>
AuthorDate: Fri, 12 Jun 2020 10:07:54 +08:00
Committer: Paul E. McKenney <paulmck@xxxxxxxxxx>
CommitterDate: Mon, 29 Jun 2020 11:58:51 -07:00
rcu: grpnum just records group number
The ->grpnum field in the rcu_node structure contains the bit position
in this structure's parent's bitmasks, which is not the CPU number.
This commit therefore adjusts this field's comment accordingly.
Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxxxxxxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
---
kernel/rcu/tree.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index 9f903f5..c96ae35 100644
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -75,7 +75,7 @@ struct rcu_node {
/* Only one bit will be set in this mask. */
int grplo; /* lowest-numbered CPU here. */
int grphi; /* highest-numbered CPU here. */
- u8 grpnum; /* CPU/group number for next level up. */
+ u8 grpnum; /* group number for next level up. */
u8 level; /* root is at level 0. */
bool wait_blkd_tasks;/* Necessary to wait for blocked tasks to */
/* exit RCU read-side critical sections */
|