Heiko Carstens 28634a07d3 s390/percpu: implement this_cpu_xchg() ... The generic variant has a local_irq_save/restore pair which is quite expensive. It is sufficient to disable preemption, which is a no-op with !CONFIG_PREEMPT and then use the regular xchg macro. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2012-09-26 15:45:24 +02:00
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asm	s390/percpu: implement this_cpu_xchg()	2012-09-26 15:45:24 +02:00