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Fix a PF_IDLE initialization bug that generated warnings on tiny-RCU.

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Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2023-09-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fix from Ingo Molnar:
 "Fix a PF_IDLE initialization bug that generated warnings on tiny-RCU"

* tag 'sched-urgent-2023-09-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  kernel/sched: Modify initial boot task idle setup
This commit is contained in:
Linus Torvalds 2023-09-22 12:16:46 -07:00
commit 5b47b5766b
2 changed files with 2 additions and 1 deletions
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2
kernel/sched/core.c
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@ -9269,7 +9269,7 @@ void __init init_idle(struct task_struct *idle, int cpu)
* PF_KTHREAD should already be set at this point; regardless, make it
* look like a proper per-CPU kthread.
*/
idle->flags |= PF_IDLE | PF_KTHREAD | PF_NO_SETAFFINITY;
idle->flags |= PF_KTHREAD | PF_NO_SETAFFINITY;
kthread_set_per_cpu(idle, cpu);
#ifdef CONFIG_SMP

1
kernel/sched/idle.c
View File

@ -373,6 +373,7 @@ EXPORT_SYMBOL_GPL(play_idle_precise);
void cpu_startup_entry(enum cpuhp_state state)
{
current->flags |= PF_IDLE;
arch_cpu_idle_prepare();
cpuhp_online_idle(state);
while (1)