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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2011-05-30 20:38:55 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2011-06-14 15:25:15 -0700
commit9a432736904d386cda28b987b38ba14dae960ecc (patch)
tree20294203f9c6132d79737e9ab54c746546afe7d4 /kernel/rcutree_plugin.h
parent59c5f46fbe01a00eedf54a23789634438bb80603 (diff)
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rcu: Simplify curing of load woes
Make the functions creating the kthreads wake them up. Leverage the fact that the per-node and boost kthreads can run anywhere, thus dispensing with the need to wake them up once the incoming CPU has gone fully online. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Tested-by: Daniel J Blueman <daniel.blueman@gmail.com>
Diffstat (limited to 'kernel/rcutree_plugin.h')
-rw-r--r--kernel/rcutree_plugin.h11
1 files changed, 1 insertions, 10 deletions
diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h
index c8bff30..ea2e2fb 100644
--- a/kernel/rcutree_plugin.h
+++ b/kernel/rcutree_plugin.h
@@ -1299,15 +1299,10 @@ static int __cpuinit rcu_spawn_one_boost_kthread(struct rcu_state *rsp,
raw_spin_unlock_irqrestore(&rnp->lock, flags);
sp.sched_priority = RCU_KTHREAD_PRIO;
sched_setscheduler_nocheck(t, SCHED_FIFO, &sp);
+ wake_up_process(t); /* get to TASK_INTERRUPTIBLE quickly. */
return 0;
}
-static void __cpuinit rcu_wake_one_boost_kthread(struct rcu_node *rnp)
-{
- if (rnp->boost_kthread_task)
- wake_up_process(rnp->boost_kthread_task);
-}
-
#else /* #ifdef CONFIG_RCU_BOOST */
static void rcu_initiate_boost(struct rcu_node *rnp, unsigned long flags)
@@ -1331,10 +1326,6 @@ static int __cpuinit rcu_spawn_one_boost_kthread(struct rcu_state *rsp,
return 0;
}
-static void __cpuinit rcu_wake_one_boost_kthread(struct rcu_node *rnp)
-{
-}
-
#endif /* #else #ifdef CONFIG_RCU_BOOST */
#ifndef CONFIG_SMP