From: Andrew Morton <a...@linux-foundation.org>
This will be needed in the patch "mm, oom: introduce oom reaper".
Acked-by: Michal Hocko <mho...@suse.com>
Cc: Ingo Molnar <mi...@elte.hu>
Cc: Peter Zijlstra <a.p.zijls...@chello.nl>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
---
include/linux/sched.h | 1 +
kernel/time/timer.c | 11 +++++++++++
2 files changed, 12 insertions(+)
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 084ed9fba620..9cf5731472fe 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -425,6 +425,7 @@ extern signed long schedule_timeout(signed long timeout);
extern signed long schedule_timeout_interruptible(signed long timeout);
extern signed long schedule_timeout_killable(signed long timeout);
extern signed long schedule_timeout_uninterruptible(signed long timeout);
+extern signed long schedule_timeout_idle(signed long timeout);
asmlinkage void schedule(void);
extern void schedule_preempt_disabled(void);
diff --git a/kernel/time/timer.c b/kernel/time/timer.c
index d1798fa0c743..73164c3aa56b 100644
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -1566,6 +1566,17 @@ signed long __sched
schedule_timeout_uninterruptible(signed long timeout)
}
EXPORT_SYMBOL(schedule_timeout_uninterruptible);
+/*
+ * Like schedule_timeout_uninterruptible(), except this task will not
contribute
+ * to load average.
+ */
+signed long __sched schedule_timeout_idle(signed long timeout)
+{
+ __set_current_state(TASK_IDLE);
+ return schedule_timeout(timeout);
+}
+EXPORT_SYMBOL(schedule_timeout_idle);
+
#ifdef CONFIG_HOTPLUG_CPU
static void migrate_timer_list(struct tvec_base *new_base, struct hlist_head
*head)
{
--
2.7.0
