diff options
| -rw-r--r-- | drivers/cpuidle/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/cpuidle/Kconfig.arm | 1 | ||||
| -rw-r--r-- | drivers/cpuidle/cpuidle.c | 2 | ||||
| -rw-r--r-- | drivers/cpuidle/driver.c | 11 | ||||
| -rw-r--r-- | drivers/cpuidle/governors/ladder.c | 4 | ||||
| -rw-r--r-- | drivers/cpuidle/governors/menu.c | 1 | ||||
| -rw-r--r-- | drivers/cpuidle/sysfs.c | 2 | ||||
| -rw-r--r-- | kernel/sched/idle.c | 4 |
8 files changed, 7 insertions, 25 deletions
diff --git a/drivers/cpuidle/Kconfig b/drivers/cpuidle/Kconfig index 1b96fb91d32c..32748c36c477 100644 --- a/drivers/cpuidle/Kconfig +++ b/drivers/cpuidle/Kconfig @@ -15,12 +15,7 @@ config CPU_IDLE if CPU_IDLE config CPU_IDLE_MULTIPLE_DRIVERS - bool "Support multiple cpuidle drivers" - default n - help - Allows the cpuidle framework to use different drivers for each CPU. - This is useful if you have a system with different CPU latencies and - states. If unsure say N. + bool config CPU_IDLE_GOV_LADDER bool "Ladder governor (for periodic timer tick)" diff --git a/drivers/cpuidle/Kconfig.arm b/drivers/cpuidle/Kconfig.arm index b6d69e899f5d..a186dec8e5df 100644 --- a/drivers/cpuidle/Kconfig.arm +++ b/drivers/cpuidle/Kconfig.arm @@ -10,6 +10,7 @@ config ARM_ARMADA_370_XP_CPUIDLE config ARM_BIG_LITTLE_CPUIDLE bool "Support for ARM big.LITTLE processors" depends on ARCH_VEXPRESS_TC2_PM + depends on MCPM select ARM_CPU_SUSPEND select CPU_IDLE_MULTIPLE_DRIVERS help diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index cb7019977c50..ee9df5e3f5eb 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -119,11 +119,13 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv, ktime_t time_start, time_end; s64 diff; + trace_cpu_idle_rcuidle(index, dev->cpu); time_start = ktime_get(); entered_state = target_state->enter(dev, drv, index); time_end = ktime_get(); + trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, dev->cpu); if (!cpuidle_state_is_coupled(dev, drv, entered_state)) local_irq_enable(); diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c index 9634f20e3926..e431d11abf8d 100644 --- a/drivers/cpuidle/driver.c +++ b/drivers/cpuidle/driver.c @@ -182,10 +182,6 @@ static void __cpuidle_driver_init(struct cpuidle_driver *drv) static int poll_idle(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index) { - ktime_t t1, t2; - s64 diff; - - t1 = ktime_get(); local_irq_enable(); if (!current_set_polling_and_test()) { while (!need_resched()) @@ -193,13 +189,6 @@ static int poll_idle(struct cpuidle_device *dev, } current_clr_polling(); - t2 = ktime_get(); - diff = ktime_to_us(ktime_sub(t2, t1)); - if (diff > INT_MAX) - diff = INT_MAX; - - dev->last_residency = (int) diff; - return index; } diff --git a/drivers/cpuidle/governors/ladder.c b/drivers/cpuidle/governors/ladder.c index 9f08e8cce1af..044ee0df5871 100644 --- a/drivers/cpuidle/governors/ladder.c +++ b/drivers/cpuidle/governors/ladder.c @@ -144,7 +144,7 @@ static int ladder_enable_device(struct cpuidle_driver *drv, ldev->last_state_idx = CPUIDLE_DRIVER_STATE_START; - for (i = 0; i < drv->state_count; i++) { + for (i = CPUIDLE_DRIVER_STATE_START; i < drv->state_count; i++) { state = &drv->states[i]; lstate = &ldev->states[i]; @@ -156,7 +156,7 @@ static int ladder_enable_device(struct cpuidle_driver *drv, if (i < drv->state_count - 1) lstate->threshold.promotion_time = state->exit_latency; - if (i > 0) + if (i > CPUIDLE_DRIVER_STATE_START) lstate->threshold.demotion_time = state->exit_latency; } diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c index c4f80c15a48d..c3732fa74f82 100644 --- a/drivers/cpuidle/governors/menu.c +++ b/drivers/cpuidle/governors/menu.c @@ -35,7 +35,6 @@ #define RESOLUTION 1024 #define DECAY 8 #define MAX_INTERESTING 50000 -#define STDDEV_THRESH 400 /* diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c index efe2f175168f..97c5903b4606 100644 --- a/drivers/cpuidle/sysfs.c +++ b/drivers/cpuidle/sysfs.c @@ -445,7 +445,7 @@ static void cpuidle_remove_state_sysfs(struct cpuidle_device *device) #define define_one_driver_ro(_name, show) \ static struct cpuidle_driver_attr attr_driver_##_name = \ - __ATTR(_name, 0644, show, NULL) + __ATTR(_name, 0444, show, NULL) struct cpuidle_driver_kobj { struct cpuidle_driver *drv; diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c index cf009fb0bc25..658a58dc30f4 100644 --- a/kernel/sched/idle.c +++ b/kernel/sched/idle.c @@ -147,8 +147,6 @@ use_default: clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, &dev->cpu)) goto use_default; - trace_cpu_idle_rcuidle(next_state, dev->cpu); - /* * Enter the idle state previously returned by the governor decision. * This function will block until an interrupt occurs and will take @@ -156,8 +154,6 @@ use_default: */ entered_state = cpuidle_enter(drv, dev, next_state); - trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, dev->cpu); - if (broadcast) clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &dev->cpu); |