diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 368864dfe6eb635ef210f046ec351f04e96f42ef..37d1297e6787928920d4effad20ece4067bf9697 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -105,6 +105,9 @@ config ARCH_HAS_ILOG2_U32 config ARCH_HAS_ILOG2_U64 def_bool n +config ARCH_HAS_CPU_IDLE_WAIT + def_bool y + config GENERIC_CALIBRATE_DELAY def_bool y diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index d2fabe7863a96345e096f5a644c111436a492819..794962d9f48b9e8e952b8c10a1bf6ec421237a08 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -82,7 +82,7 @@ void cpuidle_uninstall_idle_handler(void) { if (enabled_devices && (pm_idle != pm_idle_old)) { pm_idle = pm_idle_old; - cpu_idle_wait(); + cpuidle_kick_cpus(); } } diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 16a51546db444f9cbbbc0d845b312621eec0ae44..cb95f5a9075ab5fdb04ee062ab5201c233429c14 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -72,6 +72,19 @@ cpuidle_set_statedata(struct cpuidle_state *state, void *data) state->driver_data = data; } +#ifdef CONFIG_SMP +#ifdef CONFIG_ARCH_HAS_CPU_IDLE_WAIT +static inline void cpuidle_kick_cpus(void) +{ + cpu_idle_wait(); +} +#else /* !CONFIG_ARCH_HAS_CPU_IDLE_WAIT */ +#error "Arch needs cpu_idle_wait() equivalent here" +#endif /* !CONFIG_ARCH_HAS_CPU_IDLE_WAIT */ +#else /* !CONFIG_SMP */ +static inline void cpuidle_kick_cpus(void) {} +#endif /* !CONFIG_SMP */ + struct cpuidle_state_kobj { struct cpuidle_state *state; struct completion kobj_unregister;