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| author | Paul E. McKenney | 2014-07-13 21:00:53 +0200 |
|---|---|---|
| committer | Paul E. McKenney | 2014-09-16 19:08:01 +0200 |
| commit | 9386c0b75dda05f535a10ea1abf1817fe292c81c (patch) | |
| tree | 85bd2cdd5f2f4c11b94230bce3a1ebb220cfc181 /kernel/rcu/tree.c | |
| parent | rcu: Return false instead of 0 in rcu_nocb_adopt_orphan_cbs() (diff) | |
| download | kernel-qcow2-linux-9386c0b75dda05f535a10ea1abf1817fe292c81c.tar.gz kernel-qcow2-linux-9386c0b75dda05f535a10ea1abf1817fe292c81c.tar.xz kernel-qcow2-linux-9386c0b75dda05f535a10ea1abf1817fe292c81c.zip | |
rcu: Rationalize kthread spawning
Currently, RCU spawns kthreads from several different early_initcall()
functions. Although this has served RCU well for quite some time,
as more kthreads are added a more deterministic approach is required.
This commit therefore causes all of RCU's early-boot kthreads to be
spawned from a single early_initcall() function.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Tested-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'kernel/rcu/tree.c')
| -rw-r--r-- | kernel/rcu/tree.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 1b70cb6fbe3c..9be47f43903b 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -3489,7 +3489,7 @@ static int rcu_pm_notify(struct notifier_block *self, } /* - * Spawn the kthread that handles this RCU flavor's grace periods. + * Spawn the kthreads that handle each RCU flavor's grace periods. */ static int __init rcu_spawn_gp_kthread(void) { @@ -3498,6 +3498,7 @@ static int __init rcu_spawn_gp_kthread(void) struct rcu_state *rsp; struct task_struct *t; + rcu_scheduler_fully_active = 1; for_each_rcu_flavor(rsp) { t = kthread_run(rcu_gp_kthread, rsp, "%s", rsp->name); BUG_ON(IS_ERR(t)); @@ -3507,6 +3508,7 @@ static int __init rcu_spawn_gp_kthread(void) raw_spin_unlock_irqrestore(&rnp->lock, flags); rcu_spawn_nocb_kthreads(rsp); } + rcu_spawn_boost_kthreads(); return 0; } early_initcall(rcu_spawn_gp_kthread); |