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| author | Frederic Weisbecker <frederic@kernel.org> | 2024-09-27 00:49:05 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <frederic@kernel.org> | 2025-01-08 18:15:03 +0100 |
| commit | db7ee3cb620b2cec5a5f44767ab93cb4eb80d961 (patch) | |
| tree | 5b15eeaf79ff410449bae97236b28398e5036bac /kernel/rcu/tree_plugin.h | |
| parent | 4d13f4304fa43471bfea101658a11feec7b28ac0 (diff) | |
| download | linux-next-db7ee3cb620b2cec5a5f44767ab93cb4eb80d961.tar.gz linux-next-db7ee3cb620b2cec5a5f44767ab93cb4eb80d961.zip | |
rcu: Use kthread preferred affinity for RCU boost
Now that kthreads have an infrastructure to handle preferred affinity
against CPU hotplug and housekeeping cpumask, convert RCU boost to use
it instead of handling all the constraints by itself.
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Diffstat (limited to 'kernel/rcu/tree_plugin.h')
| -rw-r--r-- | kernel/rcu/tree_plugin.h | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 3927ea5f7955..b141b8cc4f41 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -1217,16 +1217,13 @@ static void rcu_spawn_one_boost_kthread(struct rcu_node *rnp) raw_spin_lock_irqsave_rcu_node(rnp, flags); rnp->boost_kthread_task = t; raw_spin_unlock_irqrestore_rcu_node(rnp, flags); + sp.sched_priority = kthread_prio; sched_setscheduler_nocheck(t, SCHED_FIFO, &sp); + rcu_thread_affine_rnp(t, rnp); wake_up_process(t); /* get to TASK_INTERRUPTIBLE quickly. */ } -static struct task_struct *rcu_boost_task(struct rcu_node *rnp) -{ - return READ_ONCE(rnp->boost_kthread_task); -} - #else /* #ifdef CONFIG_RCU_BOOST */ static void rcu_initiate_boost(struct rcu_node *rnp, unsigned long flags) @@ -1243,10 +1240,6 @@ static void rcu_spawn_one_boost_kthread(struct rcu_node *rnp) { } -static struct task_struct *rcu_boost_task(struct rcu_node *rnp) -{ - return NULL; -} #endif /* #else #ifdef CONFIG_RCU_BOOST */ /* |