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2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/drivers/cpuidle/Kconfig
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+# SPDX-License-Identifier: GPL-2.0-only
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 menu "CPU Idle"
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 config CPU_IDLE
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 	bool "CPU idle PM support"
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 	default y if ACPI || PPC_PSERIES
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 	select CPU_IDLE_GOV_LADDER if (!NO_HZ && !NO_HZ_IDLE)
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-	select CPU_IDLE_GOV_MENU if (NO_HZ || NO_HZ_IDLE)
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+	select CPU_IDLE_GOV_MENU if (NO_HZ || NO_HZ_IDLE) && !CPU_IDLE_GOV_TEO
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 	help
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 	  CPU idle is a generic framework for supporting software-controlled
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 	  idle processor power management.  It includes modular cross-platform
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@@ -15,13 +16,33 @@
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 if CPU_IDLE
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 config CPU_IDLE_MULTIPLE_DRIVERS
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-        bool
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+	bool
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 config CPU_IDLE_GOV_LADDER
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 	bool "Ladder governor (for periodic timer tick)"
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 config CPU_IDLE_GOV_MENU
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 	bool "Menu governor (for tickless system)"
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+
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+config CPU_IDLE_GOV_TEO
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+	bool "Timer events oriented (TEO) governor (for tickless systems)"
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+	help
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+	  This governor implements a simplified idle state selection method
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+	  focused on timer events and does not do any interactivity boosting.
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+
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+	  Some workloads benefit from using it and it generally should be safe
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+	  to use.  Say Y here if you are not happy with the alternatives.
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+
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+config CPU_IDLE_GOV_HALTPOLL
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+	bool "Haltpoll governor (for virtualized systems)"
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+	depends on KVM_GUEST
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+	help
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+	  This governor implements haltpoll idle state selection, to be
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+	  used in conjunction with the haltpoll cpuidle driver, allowing
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+	  for polling for a certain amount of time before entering idle
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+	  state.
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+
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+	  Some virtualized workloads benefit from using it.
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 config DT_IDLE_STATES
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 	bool
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 source "drivers/cpuidle/Kconfig.powerpc"
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 endmenu
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+config HALTPOLL_CPUIDLE
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+	tristate "Halt poll cpuidle driver"
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+	depends on X86 && KVM_GUEST
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+	default y
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+	help
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+	 This option enables halt poll cpuidle driver, which allows to poll
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+	 before halting in the guest (more efficient than polling in the
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+	 host via halt_poll_ns for some scenarios).
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+
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 endif
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 config ARCH_NEEDS_CPU_IDLE_COUPLED