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[PATCH] sched: move load-calculation functions

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move load-calculation functions so that they can use the per-policy
declarations and methods.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2007-08-02 17:41:40 +02:00
parent cad60d93e1
commit 9c2172459a
1 changed files with 66 additions and 66 deletions
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132
kernel/sched.c
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@ -678,46 +678,6 @@ static void update_load_sub(struct load_weight *lw, unsigned long dec)
lw->inv_weight = 0;
}
static void __update_curr_load(struct rq *rq, struct load_stat *ls)
{
if (rq->curr != rq->idle && ls->load.weight) {
ls->delta_exec += ls->delta_stat;
ls->delta_fair += calc_delta_fair(ls->delta_stat, &ls->load);
ls->delta_stat = 0;
}
}
/*
* Update delta_exec, delta_fair fields for rq.
*
* delta_fair clock advances at a rate inversely proportional to
* total load (rq->ls.load.weight) on the runqueue, while
* delta_exec advances at the same rate as wall-clock (provided
* cpu is not idle).
*
* delta_exec / delta_fair is a measure of the (smoothened) load on this
* runqueue over any given interval. This (smoothened) load is used
* during load balance.
*
* This function is called /before/ updating rq->ls.load
* and when switching tasks.
*/
static void update_curr_load(struct rq *rq, u64 now)
{
struct load_stat *ls = &rq->ls;
u64 start;
start = ls->load_update_start;
ls->load_update_start = now;
ls->delta_stat += now - start;
/*
* Stagger updates to ls->delta_fair. Very frequent updates
* can be expensive.
*/
if (ls->delta_stat >= sysctl_sched_stat_granularity)
__update_curr_load(rq, ls);
}
/*
* To aid in avoiding the subversion of "niceness" due to uneven distribution
* of tasks with abnormal "nice" values across CPUs the contribution that
@ -768,32 +728,6 @@ static const u32 prio_to_wmult[40] = {
/* 15 */ 119304647, 148102320, 186737708, 238609294, 286331153,
};
static inline void
inc_load(struct rq *rq, const struct task_struct *p, u64 now)
{
update_curr_load(rq, now);
update_load_add(&rq->ls.load, p->se.load.weight);
}
static inline void
dec_load(struct rq *rq, const struct task_struct *p, u64 now)
{
update_curr_load(rq, now);
update_load_sub(&rq->ls.load, p->se.load.weight);
}
static void inc_nr_running(struct task_struct *p, struct rq *rq, u64 now)
{
rq->nr_running++;
inc_load(rq, p, now);
}
static void dec_nr_running(struct task_struct *p, struct rq *rq, u64 now)
{
rq->nr_running--;
dec_load(rq, p, now);
}
static void activate_task(struct rq *rq, struct task_struct *p, int wakeup);
/*
@ -824,6 +758,72 @@ static int balance_tasks(struct rq *this_rq, int this_cpu, struct rq *busiest,
#define sched_class_highest (&rt_sched_class)
static void __update_curr_load(struct rq *rq, struct load_stat *ls)
{
if (rq->curr != rq->idle && ls->load.weight) {
ls->delta_exec += ls->delta_stat;
ls->delta_fair += calc_delta_fair(ls->delta_stat, &ls->load);
ls->delta_stat = 0;
}
}
/*
* Update delta_exec, delta_fair fields for rq.
*
* delta_fair clock advances at a rate inversely proportional to
* total load (rq->ls.load.weight) on the runqueue, while
* delta_exec advances at the same rate as wall-clock (provided
* cpu is not idle).
*
* delta_exec / delta_fair is a measure of the (smoothened) load on this
* runqueue over any given interval. This (smoothened) load is used
* during load balance.
*
* This function is called /before/ updating rq->ls.load
* and when switching tasks.
*/
static void update_curr_load(struct rq *rq, u64 now)
{
struct load_stat *ls = &rq->ls;
u64 start;
start = ls->load_update_start;
ls->load_update_start = now;
ls->delta_stat += now - start;
/*
* Stagger updates to ls->delta_fair. Very frequent updates
* can be expensive.
*/
if (ls->delta_stat >= sysctl_sched_stat_granularity)
__update_curr_load(rq, ls);
}
static inline void
inc_load(struct rq *rq, const struct task_struct *p, u64 now)
{
update_curr_load(rq, now);
update_load_add(&rq->ls.load, p->se.load.weight);
}
static inline void
dec_load(struct rq *rq, const struct task_struct *p, u64 now)
{
update_curr_load(rq, now);
update_load_sub(&rq->ls.load, p->se.load.weight);
}
static void inc_nr_running(struct task_struct *p, struct rq *rq, u64 now)
{
rq->nr_running++;
inc_load(rq, p, now);
}
static void dec_nr_running(struct task_struct *p, struct rq *rq, u64 now)
{
rq->nr_running--;
dec_load(rq, p, now);
}
static void set_load_weight(struct task_struct *p)
{
task_rq(p)->cfs.wait_runtime -= p->se.wait_runtime;