diff options
| author | Frederic Weisbecker <frederic@kernel.org> | 2022-02-16 16:42:07 +0100 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2022-04-11 17:05:58 -0700 |
| commit | 3352911fa9b47a90165e5c6fed440048c55146d1 (patch) | |
| tree | f185cee952395496318080742fd9d2c62c9c9ff7 /kernel/rcu/tree_plugin.h | |
| parent | 2eed973adc6e749439730e53e6220b122398d319 (diff) | |
rcu: Initialize boost kthread only for boot node prior SMP initialization
The rcu_spawn_gp_kthread() function is called as an early initcall,
which means that SMP initialization hasn't happened yet and only the
boot CPU is online. Therefore, create only the boost kthread for the
leaf node of the boot CPU.
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Cc: Neeraj Upadhyay <quic_neeraju@quicinc.com>
Cc: Uladzislau Rezki <uladzislau.rezki@sony.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/rcu/tree_plugin.h')
| -rw-r--r-- | kernel/rcu/tree_plugin.h | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 8360d86db1c0..b139635f33bd 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -1226,18 +1226,6 @@ static void rcu_boost_kthread_setaffinity(struct rcu_node *rnp, int outgoingcpu) free_cpumask_var(cm); } -/* - * Spawn boost kthreads -- called as soon as the scheduler is running. - */ -static void __init rcu_spawn_boost_kthreads(void) -{ - struct rcu_node *rnp; - - rcu_for_each_leaf_node(rnp) - if (rcu_rnp_online_cpus(rnp)) - rcu_spawn_one_boost_kthread(rnp); -} - #else /* #ifdef CONFIG_RCU_BOOST */ static void rcu_initiate_boost(struct rcu_node *rnp, unsigned long flags) @@ -1263,10 +1251,6 @@ static void rcu_boost_kthread_setaffinity(struct rcu_node *rnp, int outgoingcpu) { } -static void __init rcu_spawn_boost_kthreads(void) -{ -} - #endif /* #else #ifdef CONFIG_RCU_BOOST */ /* |