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-rw-r--r--arch/x86/Kconfig3
-rw-r--r--drivers/cpuidle/cpuidle.c13
2 files changed, 15 insertions, 1 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 65a70b777c12..a64d532dff4c 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -102,6 +102,9 @@ config ARCH_HAS_ILOG2_U32
102config ARCH_HAS_ILOG2_U64 102config ARCH_HAS_ILOG2_U64
103 def_bool n 103 def_bool n
104 104
105config ARCH_HAS_CPU_IDLE_WAIT
106 def_bool y
107
105config GENERIC_CALIBRATE_DELAY 108config GENERIC_CALIBRATE_DELAY
106 def_bool y 109 def_bool y
107 110
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 2c4b2d47973e..60f71e6345e3 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -27,6 +27,17 @@ static void (*pm_idle_old)(void);
27 27
28static int enabled_devices; 28static int enabled_devices;
29 29
30#if defined(CONFIG_ARCH_HAS_CPU_IDLE_WAIT)
31static void cpuidle_kick_cpus(void)
32{
33 cpu_idle_wait();
34}
35#elif defined(CONFIG_SMP)
36# error "Arch needs cpu_idle_wait() equivalent here"
37#else /* !CONFIG_ARCH_HAS_CPU_IDLE_WAIT && !CONFIG_SMP */
38static void cpuidle_kick_cpus(void) {}
39#endif
40
30/** 41/**
31 * cpuidle_idle_call - the main idle loop 42 * cpuidle_idle_call - the main idle loop
32 * 43 *
@@ -83,7 +94,7 @@ void cpuidle_uninstall_idle_handler(void)
83{ 94{
84 if (enabled_devices && (pm_idle != pm_idle_old)) { 95 if (enabled_devices && (pm_idle != pm_idle_old)) {
85 pm_idle = pm_idle_old; 96 pm_idle = pm_idle_old;
86 cpu_idle_wait(); 97 cpuidle_kick_cpus();
87 } 98 }
88} 99}
89 100