[PATCH] scheduler: domain: init next_balance in nohz_idle_balancer with jiffies

Peter De Schrijver
2012-01-30T12:44:51Z

From: Diwakar Tundlam <dtundlam@nvidia.com>

The next_balance parameter of nohz_idle_balancer should be initialized
to jiffies since jiffies itself is initialized to 300 seconds shy of
overflow. Otherwise, nohz_idle_balancer does not run for the first 5
mins after bootup.

Signed-off-by: Diwakar Tundlam <dtundlam@nvidia.com>
Reviewed-by: Aleksandr Frid <afrid@nvidia.com>
Reviewed-by: Peter Boonstoppel <pboonstoppel@nvidia.com>
Reviewed-by: Satya Popuri <spopuri@nvidia.com>
---
kernel/sched.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/kernel/sched.c b/kernel/sched.c
index b5efd6c..d3f291f 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -8383,6 +8383,7 @@ void __init sched_init(void)
atomic_set(&nohz.load_balancer, nr_cpu_ids);
atomic_set(&nohz.first_pick_cpu, nr_cpu_ids);
atomic_set(&nohz.second_pick_cpu, nr_cpu_ids);
+ nohz.next_balance = jiffies;
#endif
/* May be allocated at isolcpus cmdline parse time */
if (cpu_isolated_map == NULL)
--
1.7.7.rc0.72.g4b5ea.dirty