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authorLinus Torvalds <torvalds@linux-foundation.org>2015-11-15 09:35:33 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-15 09:35:33 -0800
commit051b29f2798b5f1a95e745613117eeb367ab4bce (patch)
tree0a219d6c96b27d757d23ff4d27b381cf07120cc9
parent8f98e292eb612956e1add401f28dc76ffea20323 (diff)
parent25b3e5a3344e1f700c1efec5b6f0199f04707fb1 (diff)
Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Thomas Gleixner: "A single fix to prevent math underflow in the numa balancing code" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/numa: Fix math underflow in task_tick_numa()
-rw-r--r--kernel/sched/fair.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 824aa9f501a3..f04fda8f669c 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -2302,7 +2302,7 @@ void task_tick_numa(struct rq *rq, struct task_struct *curr)
now = curr->se.sum_exec_runtime;
period = (u64)curr->numa_scan_period * NSEC_PER_MSEC;
- if (now - curr->node_stamp > period) {
+ if (now > curr->node_stamp + period) {
if (!curr->node_stamp)
curr->numa_scan_period = task_scan_min(curr);
curr->node_stamp += period;