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sched: group scheduler SMP migration fix 

group scheduler SMP migration fix: use task_cfs_rq(p) to get
to the relevant fair-scheduling runqueue of a task, rq->cfs
is not the right one.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Srivatsa Vaddagiri 2007-10-15 17:00:12 +02:00 committed by Ingo Molnar
parent 2d72376b3a
commit 2830cf8c90
1 changed files with 4 additions and 1 deletions
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5
kernel/sched.c
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@ -1040,6 +1040,8 @@ void set_task_cpu(struct task_struct *p, unsigned int new_cpu)
{
int old_cpu = task_cpu(p);
struct rq *old_rq = cpu_rq(old_cpu), *new_rq = cpu_rq(new_cpu);
struct cfs_rq *old_cfsrq = task_cfs_rq(p),
*new_cfsrq = cpu_cfs_rq(old_cfsrq, new_cpu);
u64 clock_offset;
clock_offset = old_rq->clock - new_rq->clock;
@ -1052,7 +1054,8 @@ void set_task_cpu(struct task_struct *p, unsigned int new_cpu)
if (p->se.block_start)
p->se.block_start -= clock_offset;
#endif
p->se.vruntime -= old_rq->cfs.min_vruntime - new_rq->cfs.min_vruntime;
p->se.vruntime -= old_cfsrq->min_vruntime -
new_cfsrq->min_vruntime;
__set_task_cpu(p, new_cpu);
}