linux/arch/x86/include/asm/idle.h

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#ifndef _ASM_X86_IDLE_H
#define _ASM_X86_IDLE_H
#define IDLE_START 1
#define IDLE_END 2
struct notifier_block;
void idle_notifier_register(struct notifier_block *n);
void idle_notifier_unregister(struct notifier_block *n);
#ifdef CONFIG_X86_64
void enter_idle(void);
void exit_idle(void);
#else /* !CONFIG_X86_64 */
static inline void enter_idle(void) { }
static inline void exit_idle(void) { }
#endif /* CONFIG_X86_64 */
void amd_e400_remove_cpu(int cpu);
#endif /* _ASM_X86_IDLE_H */