Merge tag 'sched-core-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler updates from Ingo Molnar:
 "Debuggability:

   - Change most occurances of BUG_ON() to WARN_ON_ONCE()

   - Reorganize & fix TASK_ state comparisons, turn it into a bitmap

   - Update/fix misc scheduler debugging facilities

  Load-balancing & regular scheduling:

   - Improve the behavior of the scheduler in presence of lot of
     SCHED_IDLE tasks - in particular they should not impact other
     scheduling classes.

   - Optimize task load tracking, cleanups & fixes

   - Clean up & simplify misc load-balancing code

  Freezer:

   - Rewrite the core freezer to behave better wrt thawing and be
     simpler in general, by replacing PF_FROZEN with TASK_FROZEN &
     fixing/adjusting all the fallout.

  Deadline scheduler:

   - Fix the DL capacity-aware code

   - Factor out dl_task_is_earliest_deadline() &
     replenish_dl_new_period()

   - Relax/optimize locking in task_non_contending()

  Cleanups:

   - Factor out the update_current_exec_runtime() helper

   - Various cleanups, simplifications"

* tag 'sched-core-2022-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (41 commits)
  sched: Fix more TASK_state comparisons
  sched: Fix TASK_state comparisons
  sched/fair: Move call to list_last_entry() in detach_tasks
  sched/fair: Cleanup loop_max and loop_break
  sched/fair: Make sure to try to detach at least one movable task
  sched: Show PF_flag holes
  freezer,sched: Rewrite core freezer logic
  sched: Widen TAKS_state literals
  sched/wait: Add wait_event_state()
  sched/completion: Add wait_for_completion_state()
  sched: Add TASK_ANY for wait_task_inactive()
  sched: Change wait_task_inactive()s match_state
  freezer,umh: Clean up freezer/initrd interaction
  freezer: Have {,un}lock_system_sleep() save/restore flags
  sched: Rename task_running() to task_on_cpu()
  sched/fair: Cleanup for SIS_PROP
  sched/fair: Default to false in test_idle_cores()
  sched/fair: Remove useless check in select_idle_core()
  sched/fair: Avoid double search on same cpu
  sched/fair: Remove redundant check in select_idle_smt()
  ...

1 files changed, 8 insertions, 4 deletions

diff --git a/drivers/acpi/x86/s2idle.c b/drivers/acpi/x86/s2idle.c
index 42f249070c09..5350c73564b6 100644
--- a/drivers/acpi/x86/s2idle.c
+++ b/drivers/acpi/x86/s2idle.c
@@ -654,12 +654,14 @@ void __init acpi_s2idle_setup(void)
 
 int acpi_register_lps0_dev(struct acpi_s2idle_dev_ops *arg)
 {
+	unsigned int sleep_flags;
+
 	if (!lps0_device_handle || sleep_no_lps0)
 		return -ENODEV;
 
-	lock_system_sleep();
+	sleep_flags = lock_system_sleep();
 	list_add(&arg->list_node, &lps0_s2idle_devops_head);
-	unlock_system_sleep();
+	unlock_system_sleep(sleep_flags);
 
 	return 0;
 }
@@ -667,12 +669,14 @@ EXPORT_SYMBOL_GPL(acpi_register_lps0_dev);
 
 void acpi_unregister_lps0_dev(struct acpi_s2idle_dev_ops *arg)
 {
+	unsigned int sleep_flags;
+
 	if (!lps0_device_handle || sleep_no_lps0)
 		return;
 
-	lock_system_sleep();
+	sleep_flags = lock_system_sleep();
 	list_del(&arg->list_node);
-	unlock_system_sleep();
+	unlock_system_sleep(sleep_flags);
 }
 EXPORT_SYMBOL_GPL(acpi_unregister_lps0_dev);