diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/cpuidle/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/cpuidle/Kconfig.arm | 10 |
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/cpuidle/Kconfig b/drivers/cpuidle/Kconfig index ff71dd662880..cac5997dca50 100644 --- a/drivers/cpuidle/Kconfig +++ b/drivers/cpuidle/Kconfig @@ -74,6 +74,7 @@ endmenu config HALTPOLL_CPUIDLE tristate "Halt poll cpuidle driver" depends on X86 && KVM_GUEST + select CPU_IDLE_GOV_HALTPOLL default y help This option enables halt poll cpuidle driver, which allows to poll diff --git a/drivers/cpuidle/Kconfig.arm b/drivers/cpuidle/Kconfig.arm index 747aa537389b..a1ee475d180d 100644 --- a/drivers/cpuidle/Kconfig.arm +++ b/drivers/cpuidle/Kconfig.arm @@ -24,6 +24,14 @@ config ARM_PSCI_CPUIDLE It provides an idle driver that is capable of detecting and managing idle states through the PSCI firmware interface. + The driver has limitations when used with PREEMPT_RT: + - If the idle states are described with the non-hierarchical layout, + all idle states are still available. + + - If the idle states are described with the hierarchical layout, + only the idle states defined per CPU are available, but not the ones + being shared among a group of CPUs (aka cluster idle states). + config ARM_PSCI_CPUIDLE_DOMAIN bool "PSCI CPU idle Domain" depends on ARM_PSCI_CPUIDLE @@ -102,6 +110,7 @@ config ARM_MVEBU_V7_CPUIDLE config ARM_TEGRA_CPUIDLE bool "CPU Idle Driver for NVIDIA Tegra SoCs" depends on (ARCH_TEGRA || COMPILE_TEST) && !ARM64 && MMU + depends on ARCH_SUSPEND_POSSIBLE select ARCH_NEEDS_CPU_IDLE_COUPLED if SMP select ARM_CPU_SUSPEND help @@ -110,6 +119,7 @@ config ARM_TEGRA_CPUIDLE config ARM_QCOM_SPM_CPUIDLE bool "CPU Idle Driver for Qualcomm Subsystem Power Manager (SPM)" depends on (ARCH_QCOM || COMPILE_TEST) && !ARM64 && MMU + depends on ARCH_SUSPEND_POSSIBLE select ARM_CPU_SUSPEND select CPU_IDLE_MULTIPLE_DRIVERS select DT_IDLE_STATES |