/usr/src/linux-headers-5.15.0-190/arch/x86/include/asm
Edit: /usr/src/linux-headers-5.15.0-190/arch/x86/include/asm/cpuidle_haltpoll.h (189B)
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ARCH_HALTPOLL_H
#define _ARCH_HALTPOLL_H
void arch_haltpoll_enable(unsigned int cpu);
void arch_haltpoll_disable(unsigned int cpu);
#endif