[GIT PULL] scheduler fix

From: Ingo Molnar
Date: Wed Dec 07 2016 - 13:48:10 EST


Linus,

Please pull the latest sched-urgent-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched-urgent-for-linus

# HEAD: 83929cce95251cc77e5659bf493bd424ae0e7a67 sched/autogroup: Fix 64-bit kernel nice level adjustment

An autogroup nice level adjustment bug fix.

Thanks,

Ingo

------------------>
Mike Galbraith (1):
sched/autogroup: Fix 64-bit kernel nice level adjustment


kernel/sched/auto_group.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/sched/auto_group.c b/kernel/sched/auto_group.c
index f1c8fd566246..da39489d2d80 100644
--- a/kernel/sched/auto_group.c
+++ b/kernel/sched/auto_group.c
@@ -212,6 +212,7 @@ int proc_sched_autogroup_set_nice(struct task_struct *p, int nice)
{
static unsigned long next = INITIAL_JIFFIES;
struct autogroup *ag;
+ unsigned long shares;
int err;

if (nice < MIN_NICE || nice > MAX_NICE)
@@ -230,9 +231,10 @@ int proc_sched_autogroup_set_nice(struct task_struct *p, int nice)

next = HZ / 10 + jiffies;
ag = autogroup_task_get(p);
+ shares = scale_load(sched_prio_to_weight[nice + 20]);

down_write(&ag->lock);
- err = sched_group_set_shares(ag->tg, sched_prio_to_weight[nice + 20]);
+ err = sched_group_set_shares(ag->tg, shares);
if (!err)
ag->nice = nice;
up_write(&ag->lock);