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Commit 38ef6d19 authored by Avi Kivity's avatar Avi Kivity
Browse files

HOTPLUG: Adapt thermal throttle to CPU_DYING 



CPU_DYING is notified in atomic context, so no taking mutexes here.

Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent ac076758

arch/i386/kernel/cpu/mcheck/therm_throt.c

+4 −2
Original line number Diff line number Diff line
@@ -134,19 +134,21 @@ static __cpuinit int thermal_throttle_cpu_callback(struct notifier_block *nfb, 
	int err;



	sys_dev = get_cpu_sysdev(cpu);

	mutex_lock(&therm_cpu_lock);

	switch (action) {

	case CPU_ONLINE:

	case CPU_ONLINE_FROZEN:

		mutex_lock(&therm_cpu_lock);

		err = thermal_throttle_add_dev(sys_dev);

		mutex_unlock(&therm_cpu_lock);

		WARN_ON(err);

		break;

	case CPU_DEAD:

	case CPU_DEAD_FROZEN:

		mutex_lock(&therm_cpu_lock);

		thermal_throttle_remove_dev(sys_dev);

		mutex_unlock(&therm_cpu_lock);

		break;

	}

	mutex_unlock(&therm_cpu_lock);

	return NOTIFY_OK;

}