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xen/events: use locked set|clear_bit() for cpu_evtchn_mask 

The per-cpu event channel masks can be updated unlocked from multiple
CPUs, so use the locked variant.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
This commit is contained in:
Jeremy Fitzhardinge 2010-11-16 14:56:47 -08:00
parent 1c6969ec8e
commit e04195644e
1 changed files with 2 additions and 2 deletions
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4
drivers/xen/events.c
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@ -278,8 +278,8 @@ static void bind_evtchn_to_cpu(unsigned int chn, unsigned int cpu)
cpumask_copy(irq_to_desc(irq)->affinity, cpumask_of(cpu));
#endif
__clear_bit(chn, cpu_evtchn_mask(cpu_from_irq(irq)));
__set_bit(chn, cpu_evtchn_mask(cpu));
clear_bit(chn, cpu_evtchn_mask(cpu_from_irq(irq)));
set_bit(chn, cpu_evtchn_mask(cpu));
irq_info[irq].cpu = cpu;
}