diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/rcupdate.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c index f35f944abe3d..b331fe3f64e9 100644 --- a/kernel/rcupdate.c +++ b/kernel/rcupdate.c @@ -210,16 +210,18 @@ static void rcu_check_quiescent_state(void) * locking requirements, the list it's pulling from has to belong to a cpu * which is dead and hence not processing interrupts. */ -static void rcu_move_batch(struct list_head *list) +static void rcu_move_batch(struct rcu_head *list) { - struct list_head *entry; - int cpu = smp_processor_id(); + int cpu; local_irq_disable(); - while (!list_empty(list)) { - entry = list->next; - list_del(entry); - list_add_tail(entry, &RCU_nxtlist(cpu)); + + cpu = smp_processor_id(); + + while (list != NULL) { + *RCU_nxttail(cpu) = list; + RCU_nxttail(cpu) = &list->next; + list = list->next; } local_irq_enable(); } @@ -233,11 +235,10 @@ static void rcu_offline_cpu(int cpu) spin_lock_bh(&rcu_state.mutex); if (rcu_ctrlblk.cur != rcu_ctrlblk.completed) cpu_quiet(cpu); -unlock: spin_unlock_bh(&rcu_state.mutex); - rcu_move_batch(&RCU_curlist(cpu)); - rcu_move_batch(&RCU_nxtlist(cpu)); + rcu_move_batch(RCU_curlist(cpu)); + rcu_move_batch(RCU_nxtlist(cpu)); tasklet_kill_immediate(&RCU_tasklet(cpu), cpu); } |