diff options
Diffstat (limited to 'kernel/sched.c')
| -rw-r--r-- | kernel/sched.c | 49 |
1 files changed, 34 insertions, 15 deletions
diff --git a/kernel/sched.c b/kernel/sched.c index d613723f324..fe3c152d0c6 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -927,7 +927,10 @@ static int effective_prio(struct task_struct *p) */ static void activate_task(struct rq *rq, struct task_struct *p, int wakeup) { - u64 now = rq_clock(rq); + u64 now; + + update_rq_clock(rq); + now = rq->clock; if (p->state == TASK_UNINTERRUPTIBLE) rq->nr_uninterruptible--; @@ -941,7 +944,10 @@ static void activate_task(struct rq *rq, struct task_struct *p, int wakeup) */ static inline void activate_idle_task(struct task_struct *p, struct rq *rq) { - u64 now = rq_clock(rq); + u64 now; + + update_rq_clock(rq); + now = rq->clock; if (p->state == TASK_UNINTERRUPTIBLE) rq->nr_uninterruptible--; @@ -1664,7 +1670,8 @@ void fastcall wake_up_new_task(struct task_struct *p, unsigned long clone_flags) rq = task_rq_lock(p, &flags); BUG_ON(p->state != TASK_RUNNING); this_cpu = smp_processor_id(); /* parent's CPU */ - now = rq_clock(rq); + update_rq_clock(rq); + now = rq->clock; p->prio = effective_prio(p); @@ -2134,7 +2141,8 @@ void sched_exec(void) static void pull_task(struct rq *src_rq, struct task_struct *p, struct rq *this_rq, int this_cpu) { - deactivate_task(src_rq, p, 0, rq_clock(src_rq)); + update_rq_clock(src_rq); + deactivate_task(src_rq, p, 0, src_rq->clock); set_task_cpu(p, this_cpu); activate_task(this_rq, p, 0); /* @@ -3221,7 +3229,8 @@ unsigned long long task_sched_runtime(struct task_struct *p) rq = task_rq_lock(p, &flags); ns = p->se.sum_exec_runtime; if (rq->curr == p) { - delta_exec = rq_clock(rq) - p->se.exec_start; + update_rq_clock(rq); + delta_exec = rq->clock - p->se.exec_start; if ((s64)delta_exec > 0) ns += delta_exec; } @@ -3919,7 +3928,8 @@ void rt_mutex_setprio(struct task_struct *p, int prio) BUG_ON(prio < 0 || prio > MAX_PRIO); rq = task_rq_lock(p, &flags); - now = rq_clock(rq); + update_rq_clock(rq); + now = rq->clock; oldprio = p->prio; on_rq = p->se.on_rq; @@ -3966,7 +3976,8 @@ void set_user_nice(struct task_struct *p, long nice) * the task might be in the middle of scheduling on another CPU. */ rq = task_rq_lock(p, &flags); - now = rq_clock(rq); + update_rq_clock(rq); + now = rq->clock; /* * The RT priorities are set via sched_setscheduler(), but we still * allow the 'normal' nice value to be set - but as expected @@ -4228,8 +4239,10 @@ recheck: goto recheck; } on_rq = p->se.on_rq; - if (on_rq) - deactivate_task(rq, p, 0, rq_clock(rq)); + if (on_rq) { + update_rq_clock(rq); + deactivate_task(rq, p, 0, rq->clock); + } oldprio = p->prio; __setscheduler(rq, p, policy, param->sched_priority); if (on_rq) { @@ -4981,8 +4994,10 @@ static int __migrate_task(struct task_struct *p, int src_cpu, int dest_cpu) goto out; on_rq = p->se.on_rq; - if (on_rq) - deactivate_task(rq_src, p, 0, rq_clock(rq_src)); + if (on_rq) { + update_rq_clock(rq_src); + deactivate_task(rq_src, p, 0, rq_src->clock); + } set_task_cpu(p, dest_cpu); if (on_rq) { activate_task(rq_dest, p, 0); @@ -5215,7 +5230,8 @@ static void migrate_dead_tasks(unsigned int dead_cpu) for ( ; ; ) { if (!rq->nr_running) break; - next = pick_next_task(rq, rq->curr, rq_clock(rq)); + update_rq_clock(rq); + next = pick_next_task(rq, rq->curr, rq->clock); if (!next) break; migrate_dead(dead_cpu, next); @@ -5400,7 +5416,8 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu) rq->migration_thread = NULL; /* Idle task back to normal (off runqueue, low prio) */ rq = task_rq_lock(rq->idle, &flags); - deactivate_task(rq, rq->idle, 0, rq_clock(rq)); + update_rq_clock(rq); + deactivate_task(rq, rq->idle, 0, rq->clock); rq->idle->static_prio = MAX_PRIO; __setscheduler(rq, rq->idle, SCHED_NORMAL, 0); rq->idle->sched_class = &idle_sched_class; @@ -6638,8 +6655,10 @@ void normalize_rt_tasks(void) #endif on_rq = p->se.on_rq; - if (on_rq) - deactivate_task(task_rq(p), p, 0, rq_clock(task_rq(p))); + if (on_rq) { + update_rq_clock(task_rq(p)); + deactivate_task(task_rq(p), p, 0, task_rq(p)->clock); + } __setscheduler(rq, p, SCHED_NORMAL, 0); if (on_rq) { activate_task(task_rq(p), p, 0); |