On Wed, 2009-11-11 at 15:21 +0900, Yasunori Goto wrote:
> > Someone needs to fix that if they really care.
>
> To be honest, I don't have any good idea because I'm not familiar with
> schduler's code.
You could possible try something like the below, its rather gross but
might maybe work,.. has other issues though.
---
kernel/sched.c | 9 +++++++--
1 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/kernel/sched.c b/kernel/sched.c
index 91642c1..65629a3 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -1614,7 +1614,7 @@ static void update_group_shares_cpu(struct task_group
*tg, int cpu,
*/
static int tg_shares_up(struct task_group *tg, void *data)
{
- unsigned long weight, rq_weight = 0, shares = 0;
+ unsigned long weight, rq_weight = 0, sum_weight = 0, shares = 0;
unsigned long *usd_rq_weight;
struct sched_domain *sd = data;
unsigned long flags;
@@ -1630,6 +1630,7 @@ static int tg_shares_up(struct task_group *tg, void *data)
weight = tg->cfs_rq[i]->load.weight;
usd_rq_weight[i] = weight;
+ rq_weight += weight;
/*
* If there are currently no tasks on the cpu pretend there
* is one of average load so that when a new task gets to
@@ -1638,10 +1639,14 @@ static int tg_shares_up(struct task_group *tg, void
*data)
if (!weight)
weight = NICE_0_LOAD;
- rq_weight += weight;
+ sum_weight += weight;
+
shares += tg->cfs_rq[i]->shares;
}
+ if (!rq_weight)
+ rq_weight = sum_weight;
+
if ((!shares && rq_weight) || shares > tg->shares)
shares = tg->shares;
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