Heiko Carstens 4c2241fd42 [S390] percpu: implement arch specific irqsafe_cpu_ops ... Implement arch specific irqsafe_cpu ops. The arch specific ops do not disable/enable interrupts since that is an expensive operation. Instead we disable preemption and perform a compare and swap loop. Since on server distros (the ones we care about) preemption is disabled the preempt_disable()/preempt_enable() pair is a nop. In the end this code should be faster than the generic one. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2011-05-23 10:24:29 +02:00
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asm	[S390] percpu: implement arch specific irqsafe_cpu_ops	2011-05-23 10:24:29 +02:00