diff options
| -rw-r--r-- | drivers/acpi/acpi_pad.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c index 37d73024b82e..e20708f2b8e5 100644 --- a/drivers/acpi/acpi_pad.c +++ b/drivers/acpi/acpi_pad.c @@ -215,8 +215,15 @@ static int power_saving_thread(void *data) * borrow CPU time from this CPU and cause RT task use > 95% * CPU time. To make 'avoid starvation' work, takes a nap here. */ - if (do_sleep) + if (unlikely(do_sleep)) schedule_timeout_killable(HZ * idle_pct / 100); + + /* If an external event has set the need_resched flag, then + * we need to deal with it, or this loop will continue to + * spin without calling __mwait(). + */ + if (unlikely(need_resched())) + schedule(); } exit_round_robin(tsk_index); |
