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Diffstat (limited to 'kernel/rcu/tree_exp.h')
-rw-r--r--kernel/rcu/tree_exp.h14
1 files changed, 9 insertions, 5 deletions
diff --git a/kernel/rcu/tree_exp.h b/kernel/rcu/tree_exp.h
index f3947c49eee7..237a79989aba 100644
--- a/kernel/rcu/tree_exp.h
+++ b/kernel/rcu/tree_exp.h
@@ -255,7 +255,7 @@ static void rcu_report_exp_cpu_mult(struct rcu_node *rnp,
*/
static void rcu_report_exp_rdp(struct rcu_data *rdp)
{
- WRITE_ONCE(rdp->exp_deferred_qs, false);
+ WRITE_ONCE(rdp->cpu_no_qs.b.exp, false);
rcu_report_exp_cpu_mult(rdp->mynode, rdp->grpmask, true);
}
@@ -387,6 +387,7 @@ retry_ipi:
continue;
}
if (get_cpu() == cpu) {
+ mask_ofl_test |= mask;
put_cpu();
continue;
}
@@ -506,7 +507,10 @@ static void synchronize_rcu_expedited_wait(void)
if (rdp->rcu_forced_tick_exp)
continue;
rdp->rcu_forced_tick_exp = true;
- tick_dep_set_cpu(cpu, TICK_DEP_BIT_RCU_EXP);
+ preempt_disable();
+ if (cpu_online(cpu))
+ tick_dep_set_cpu(cpu, TICK_DEP_BIT_RCU_EXP);
+ preempt_enable();
}
}
j = READ_ONCE(jiffies_till_first_fqs);
@@ -655,7 +659,7 @@ static void rcu_exp_handler(void *unused)
rcu_dynticks_curr_cpu_in_eqs()) {
rcu_report_exp_rdp(rdp);
} else {
- rdp->exp_deferred_qs = true;
+ WRITE_ONCE(rdp->cpu_no_qs.b.exp, true);
set_tsk_need_resched(t);
set_preempt_need_resched();
}
@@ -677,7 +681,7 @@ static void rcu_exp_handler(void *unused)
if (depth > 0) {
raw_spin_lock_irqsave_rcu_node(rnp, flags);
if (rnp->expmask & rdp->grpmask) {
- rdp->exp_deferred_qs = true;
+ WRITE_ONCE(rdp->cpu_no_qs.b.exp, true);
t->rcu_read_unlock_special.b.exp_hint = true;
}
raw_spin_unlock_irqrestore_rcu_node(rnp, flags);
@@ -759,7 +763,7 @@ static void sync_sched_exp_online_cleanup(int cpu)
my_cpu = get_cpu();
/* Quiescent state either not needed or already requested, leave. */
if (!(READ_ONCE(rnp->expmask) & rdp->grpmask) ||
- rdp->cpu_no_qs.b.exp) {
+ READ_ONCE(rdp->cpu_no_qs.b.exp)) {
put_cpu();
return;
}