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kernel add
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#ifndef __ASM_IDLE_H
#define __ASM_IDLE_H
#include <linux/cpuidle.h>
#include <linux/linkage.h>
extern void (*cpu_wait)(void);
extern void r4k_wait(void);
extern asmlinkage void __r4k_wait(void);
extern void r4k_wait_irqoff(void);
static inline int using_rollback_handler(void)
{
return cpu_wait == r4k_wait;
}
extern int mips_cpuidle_wait_enter(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int index);
#define MIPS_CPUIDLE_WAIT_STATE {\
.enter = mips_cpuidle_wait_enter,\
.exit_latency = 1,\
.target_residency = 1,\
.power_usage = UINT_MAX,\
.name = "wait",\
.desc = "MIPS wait",\
}
#endif /* __ASM_IDLE_H */
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