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Subject[RFC][Patch 17/18] sched: update f_b_q() to use u64 for weighted cpuload
Date
Update f_b_q() to use u64 when comparing loads.

Signed-off-by: Nikhil Rao <ncrao@google.com>
---
kernel/sched_fair.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 386d832..33c36f1 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -3203,14 +3203,14 @@ find_busiest_queue(struct sched_domain *sd, struct sched_group *group,
const struct cpumask *cpus)
{
struct rq *busiest = NULL, *rq;
- unsigned long max_load = 0;
+ u64 max_load = 0;
int i;

for_each_cpu(i, sched_group_cpus(group)) {
unsigned long power = power_of(i);
unsigned long capacity = DIV_ROUND_CLOSEST(power,
SCHED_POWER_SCALE);
- unsigned long wl;
+ u64 wl;

if (!capacity)
capacity = fix_small_capacity(sd, group);
@@ -3234,7 +3234,7 @@ find_busiest_queue(struct sched_domain *sd, struct sched_group *group,
* the load can be moved away from the cpu that is potentially
* running at a lower capacity.
*/
- wl = (wl * SCHED_POWER_SCALE) / power;
+ wl = div_u64(wl * SCHED_POWER_SCALE, power);

if (wl > max_load) {
max_load = wl;
--
1.7.3.1


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