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sched/core: Add missing update_rq_clock() in post_init_entity_util_avg()
Address this rq-clock update bug: WARNING: CPU: 0 PID: 0 at ../kernel/sched/sched.h:797 post_init_entity_util_avg() rq->clock_update_flags < RQCF_ACT_SKIP Call Trace: __warn() post_init_entity_util_avg() wake_up_new_task() _do_fork() kernel_thread() rest_init() start_kernel() Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
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@ -2578,6 +2578,7 @@ void wake_up_new_task(struct task_struct *p)
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__set_task_cpu(p, select_task_rq(p, task_cpu(p), SD_BALANCE_FORK, 0));
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#endif
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rq = __task_rq_lock(p, &rf);
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update_rq_clock(rq);
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post_init_entity_util_avg(&p->se);
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activate_task(rq, p, 0);
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@ -9267,6 +9267,7 @@ void online_fair_sched_group(struct task_group *tg)
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se = tg->se[i];
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raw_spin_lock_irq(&rq->lock);
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update_rq_clock(rq);
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attach_entity_cfs_rq(se);
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sync_throttle(tg, i);
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raw_spin_unlock_irq(&rq->lock);
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