AcoSail/kernel_optimize_test
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Merge branches 'acpica', 'acpi-battery' and 'pm-cpuidle'

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This commit is contained in:
Rafael J. Wysocki 2015-04-30 21:05:57 +02:00
commit 50904a7ddd
3 changed files with 19 additions and 15 deletions
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2
drivers/acpi/sbs.c
View File

@ -684,7 +684,7 @@ static int acpi_sbs_add(struct acpi_device *device)
if (!sbs_manager_broken) {
result = acpi_manager_get_info(sbs);
if (!result) {
sbs->manager_present = 0;
sbs->manager_present = 1;
for (id = 0; id < MAX_SBS_BAT; ++id)
if ((sbs->batteries_supported & (1 << id)))
acpi_battery_add(sbs, id);

16
drivers/cpuidle/cpuidle.c
View File

@ -158,9 +158,18 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv,
int entered_state;
struct cpuidle_state *target_state = &drv->states[index];
bool broadcast = !!(target_state->flags & CPUIDLE_FLAG_TIMER_STOP);
ktime_t time_start, time_end;
s64 diff;
/*
* Tell the time framework to switch to a broadcast timer because our
* local timer will be shut down. If a local timer is used from another
* CPU as a broadcast timer, this call may fail if it is not available.
*/
if (broadcast && tick_broadcast_enter())
return -EBUSY;
trace_cpu_idle_rcuidle(index, dev->cpu);
time_start = ktime_get();
@ -169,6 +178,13 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv,
time_end = ktime_get();
trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, dev->cpu);
if (broadcast) {
if (WARN_ON_ONCE(!irqs_disabled()))
local_irq_disable();
tick_broadcast_exit();
}
if (!cpuidle_state_is_coupled(dev, drv, entered_state))
local_irq_enable();

16
kernel/sched/idle.c
View File

@ -81,7 +81,6 @@ static void cpuidle_idle_call(void)
struct cpuidle_device *dev = __this_cpu_read(cpuidle_devices);
struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev);
int next_state, entered_state;
unsigned int broadcast;
bool reflect;
/*
@ -150,17 +149,6 @@ static void cpuidle_idle_call(void)
goto exit_idle;
}
broadcast = drv->states[next_state].flags & CPUIDLE_FLAG_TIMER_STOP;
/*
* Tell the time framework to switch to a broadcast timer
* because our local timer will be shutdown. If a local timer
* is used from another cpu as a broadcast timer, this call may
* fail if it is not available
*/
if (broadcast && tick_broadcast_enter())
goto use_default;
/* Take note of the planned idle state. */
idle_set_state(this_rq(), &drv->states[next_state]);
@ -174,8 +162,8 @@ static void cpuidle_idle_call(void)
/* The cpu is no longer idle or about to enter idle. */
idle_set_state(this_rq(), NULL);
if (broadcast)
tick_broadcast_exit();
if (entered_state == -EBUSY)
goto use_default;
/*
* Give the governor an opportunity to reflect on the outcome