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HOTPLUG: Adapt thermal throttle to CPU_DYING

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

Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Avi Kivity 2007-05-24 12:37:34 +03:00
parent ac076758b9
commit 38ef6d195f
1 changed files with 4 additions and 2 deletions
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6
arch/i386/kernel/cpu/mcheck/therm_throt.c
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@ -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;
}