Commit 7a0c2b09 authored Jun 12, 2020 by Wei Yang Committed by Paul E. McKenney Jun 29, 2020

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@linux.alibaba.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

parent a2dae430

kernel/rcu/tree.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -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 */

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