diff options
Diffstat (limited to 'kernel/rcu/rcu_segcblist.c')
| -rw-r--r-- | kernel/rcu/rcu_segcblist.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/kernel/rcu/rcu_segcblist.c b/kernel/rcu/rcu_segcblist.c index 9ac28f175627..92968b856593 100644 --- a/kernel/rcu/rcu_segcblist.c +++ b/kernel/rcu/rcu_segcblist.c @@ -128,6 +128,18 @@ struct rcu_head *rcu_segcblist_first_pend_cb(struct rcu_segcblist *rsclp) } /* + * Return false if there are no CBs awaiting grace periods, otherwise, + * return true and store the nearest waited-upon grace period into *lp. + */ +bool rcu_segcblist_nextgp(struct rcu_segcblist *rsclp, unsigned long *lp) +{ + if (!rcu_segcblist_pend_cbs(rsclp)) + return false; + *lp = rsclp->gp_seq[RCU_WAIT_TAIL]; + return true; +} + +/* * Enqueue the specified callback onto the specified rcu_segcblist * structure, updating accounting as needed. Note that the ->len * field may be accessed locklessly, hence the WRITE_ONCE(). |