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-rw-r--r--kernel/rcu/rcu.h1
-rw-r--r--kernel/rcu/srcutree.c8
-rw-r--r--kernel/rcu/tree.c6
-rw-r--r--kernel/rcu/tree_exp.h2
4 files changed, 11 insertions, 6 deletions
diff --git a/kernel/rcu/rcu.h b/kernel/rcu/rcu.h
index 1c868bcfd705..7a693e31184a 100644
--- a/kernel/rcu/rcu.h
+++ b/kernel/rcu/rcu.h
@@ -485,6 +485,7 @@ void show_rcu_gp_kthreads(void);
void rcu_force_quiescent_state(void);
void rcu_bh_force_quiescent_state(void);
void rcu_sched_force_quiescent_state(void);
+extern struct workqueue_struct *rcu_gp_wq;
#endif /* #else #ifdef CONFIG_TINY_RCU */
#ifdef CONFIG_RCU_NOCB_CPU
diff --git a/kernel/rcu/srcutree.c b/kernel/rcu/srcutree.c
index 045b559b9f22..743d18379256 100644
--- a/kernel/rcu/srcutree.c
+++ b/kernel/rcu/srcutree.c
@@ -492,8 +492,7 @@ static bool srcu_queue_delayed_work_on(int cpu, struct workqueue_struct *wq,
*/
static void srcu_schedule_cbs_sdp(struct srcu_data *sdp, unsigned long delay)
{
- srcu_queue_delayed_work_on(sdp->cpu, system_power_efficient_wq,
- &sdp->work, delay);
+ srcu_queue_delayed_work_on(sdp->cpu, rcu_gp_wq, &sdp->work, delay);
}
/*
@@ -691,8 +690,7 @@ static void srcu_funnel_gp_start(struct srcu_struct *sp, struct srcu_data *sdp,
rcu_seq_state(sp->srcu_gp_seq) == SRCU_STATE_IDLE) {
WARN_ON_ONCE(ULONG_CMP_GE(sp->srcu_gp_seq, sp->srcu_gp_seq_needed));
srcu_gp_start(sp);
- queue_delayed_work(system_power_efficient_wq, &sp->work,
- srcu_get_delay(sp));
+ queue_delayed_work(rcu_gp_wq, &sp->work, srcu_get_delay(sp));
}
spin_unlock_irqrestore_rcu_node(sp, flags);
}
@@ -1225,7 +1223,7 @@ static void srcu_reschedule(struct srcu_struct *sp, unsigned long delay)
spin_unlock_irq_rcu_node(sp);
if (pushgp)
- queue_delayed_work(system_power_efficient_wq, &sp->work, delay);
+ queue_delayed_work(rcu_gp_wq, &sp->work, delay);
}
/*
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 99d404c6bbbb..2a734692a581 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -4167,6 +4167,8 @@ static void __init rcu_dump_rcu_node_tree(struct rcu_state *rsp)
pr_cont("\n");
}
+struct workqueue_struct *rcu_gp_wq;
+
void __init rcu_init(void)
{
int cpu;
@@ -4193,6 +4195,10 @@ void __init rcu_init(void)
rcu_cpu_starting(cpu);
rcutree_online_cpu(cpu);
}
+
+ /* Create workqueue for expedited GPs and for Tree SRCU. */
+ rcu_gp_wq = alloc_workqueue("rcu_gp", WQ_MEM_RECLAIM, 0);
+ WARN_ON(!rcu_gp_wq);
}
#include "tree_exp.h"
diff --git a/kernel/rcu/tree_exp.h b/kernel/rcu/tree_exp.h
index 6ad87642f44a..f72eefab8543 100644
--- a/kernel/rcu/tree_exp.h
+++ b/kernel/rcu/tree_exp.h
@@ -626,7 +626,7 @@ static void _synchronize_rcu_expedited(struct rcu_state *rsp,
rew.rew_rsp = rsp;
rew.rew_s = s;
INIT_WORK_ONSTACK(&rew.rew_work, wait_rcu_exp_gp);
- schedule_work(&rew.rew_work);
+ queue_work(rcu_gp_wq, &rew.rew_work);
}
/* Wait for expedited grace period to complete. */
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