um: Use asm-generic/switch_to.h

generic-y += bug.h cputime.h device.h emergency-restart.h futex.h hardirq.h

generic-y += hw_irq.h irq_regs.h kdebug.h percpu.h sections.h topology.h xor.h

generic-y += ftrace.h pci.h io.h param.h delay.h mutex.h current.h exec.h

generic-y += switch_to.h

extern void arch_switch_to(struct task_struct *to);

void *_switch_to(void *prev, void *next, void *last)

void *__switch_to(struct task_struct *from, struct task_struct *to)

{

	struct task_struct *from = prev;

	struct task_struct *to = next;

	to->thread.prev_sched = from;

	set_current(to);

	} while (current->thread.saved_task);

	return current->thread.prev_sched;

}

void interrupt_end(void)

#ifndef _ASM_UM_SWITCH_TO_H_

#define _ASM_UM_SWITCH_TO_H_

extern void *_switch_to(void *prev, void *next, void *last);

#define switch_to(prev, next, last) prev = _switch_to(prev, next, last)

#endif