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| author |   Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com> | 2008-01-25 21:08:00 +0100 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2008-01-25 21:08:00 +0100 |
| commit | 58e2d4ca581167c2a079f4ee02be2f0bc52e8729 (patch) | |
| tree | 9a8c8324785800f3577fb897ca3e2ae21ad8c55a /kernel/sched_rt.c | |
| parent | sched: group scheduling, minor fixes (diff) | |
| download | linux-dev-58e2d4ca581167c2a079f4ee02be2f0bc52e8729.tar.xz linux-dev-58e2d4ca581167c2a079f4ee02be2f0bc52e8729.zip | |
sched: group scheduling, change how cpu load is calculated
This patch changes how the cpu load exerted by fair_sched_class tasks
is calculated. Load exerted by fair_sched_class tasks on a cpu is now
a summation of the group weights, rather than summation of task weights.
Weight exerted by a group on a cpu is dependent on the shares allocated
to it.
This version of patch has a minor impact on code size, but should have
no runtime/functional impact for !CONFIG_FAIR_GROUP_SCHED.
Signed-off-by: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched_rt.c')
| -rw-r--r-- | kernel/sched_rt.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c index 9ba3daa03475..cefcd5105146 100644 --- a/kernel/sched_rt.c +++ b/kernel/sched_rt.c @@ -32,6 +32,7 @@ static void enqueue_task_rt(struct rq *rq, struct task_struct *p, int wakeup) list_add_tail(&p->run_list, array->queue + p->prio); __set_bit(p->prio, array->bitmap); + inc_cpu_load(rq, p->se.load.weight); } /* @@ -46,6 +47,7 @@ static void dequeue_task_rt(struct rq *rq, struct task_struct *p, int sleep) list_del(&p->run_list); if (list_empty(array->queue + p->prio)) __clear_bit(p->prio, array->bitmap); + dec_cpu_load(rq, p->se.load.weight); } /* |