write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/kernel/cpu.c
..
..
@@ -45,6 +45,7 @@
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 #include <trace/hooks/sched.h>
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 #include <trace/hooks/cpu.h>
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+#include "sched/sched.h"
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 #include "smpboot.h"
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 /**
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@@ -1159,8 +1160,6 @@
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 }
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 EXPORT_SYMBOL_GPL(remove_cpu);
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-extern int  dl_cpu_busy(int cpu, struct task_struct *p);
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-
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 int __pause_drain_rq(struct cpumask *cpus)
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 {
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 	unsigned int cpu;
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@@ -1234,7 +1233,7 @@
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 	cpumask_and(cpus, cpus, cpu_active_mask);
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 	for_each_cpu(cpu, cpus) {
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-		if (!cpu_online(cpu) || dl_cpu_busy(cpu, NULL) ||
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+		if (!cpu_online(cpu) || dl_bw_check_overflow(cpu) ||
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 			get_cpu_device(cpu)->offline_disabled == true) {
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 			err = -EBUSY;
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 			goto err_cpu_maps_update;
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@@ -2538,8 +2537,10 @@
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 	if (st->state < target)
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 		ret = cpu_up(dev->id, target);
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-	else
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+	else if (st->state > target)
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 		ret = cpu_down(dev->id, target);
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+	else if (WARN_ON(st->target != target))
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+		st->target = target;
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 out:
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 	unlock_device_hotplug();
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 	return ret ? ret : count;