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Merge branch 'pm-sleep'

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* pm-sleep:
  ACPI / PM: Check low power idle constraints for debug only
  PM / s2idle: Rename platform operations structure
  PM / s2idle: Rename ->enter_freeze to ->enter_s2idle
  PM / s2idle: Rename freeze_state enum and related items
  PM / s2idle: Rename PM_SUSPEND_FREEZE to PM_SUSPEND_TO_IDLE
  ACPI / PM: Prefer suspend-to-idle over S3 on some systems
  platform/x86: intel-hid: Wake up Dell Latitude 7275 from suspend-to-idle
  PM / suspend: Define pr_fmt() in suspend.c
  PM / suspend: Use mem_sleep_labels[] strings in messages
  PM / sleep: Put pm_test under CONFIG_PM_SLEEP_DEBUG
  PM / sleep: Check pm_wakeup_pending() in __device_suspend_noirq()
  PM / core: Add error argument to dpm_show_time()
  PM / core: Split dpm_suspend_noirq() and dpm_resume_noirq()
  PM / s2idle: Rearrange the main suspend-to-idle loop
  PM / timekeeping: Print debug messages when requested
  PM / sleep: Mark suspend/hibernation start and finish
  PM / sleep: Do not print debug messages by default
  PM / suspend: Export pm_suspend_target_state
This commit is contained in:
Rafael J. Wysocki 2017-09-04 00:06:02 +02:00
commit 7b01463e51
22 changed files with 622 additions and 291 deletions
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18
drivers/cpuidle/cpuidle.c
View file

@ -77,7 +77,7 @@ static int find_deepest_state(struct cpuidle_driver *drv,
struct cpuidle_device *dev,
unsigned int max_latency,
unsigned int forbidden_flags,
bool freeze)
bool s2idle)
{
unsigned int latency_req = 0;
int i, ret = 0;
@ -89,7 +89,7 @@ static int find_deepest_state(struct cpuidle_driver *drv,
if (s->disabled || su->disable || s->exit_latency <= latency_req
|| s->exit_latency > max_latency
|| (s->flags & forbidden_flags)
|| (freeze && !s->enter_freeze))
|| (s2idle && !s->enter_s2idle))
continue;
latency_req = s->exit_latency;
@ -128,7 +128,7 @@ int cpuidle_find_deepest_state(struct cpuidle_driver *drv,
}
#ifdef CONFIG_SUSPEND
static void enter_freeze_proper(struct cpuidle_driver *drv,
static void enter_s2idle_proper(struct cpuidle_driver *drv,
struct cpuidle_device *dev, int index)
{
/*
@ -143,7 +143,7 @@ static void enter_freeze_proper(struct cpuidle_driver *drv,
* suspended is generally unsafe.
*/
stop_critical_timings();
drv->states[index].enter_freeze(dev, drv, index);
drv->states[index].enter_s2idle(dev, drv, index);
WARN_ON(!irqs_disabled());
/*
* timekeeping_resume() that will be called by tick_unfreeze() for the
@ -155,25 +155,25 @@ static void enter_freeze_proper(struct cpuidle_driver *drv,
}
/**
* cpuidle_enter_freeze - Enter an idle state suitable for suspend-to-idle.
* cpuidle_enter_s2idle - Enter an idle state suitable for suspend-to-idle.
* @drv: cpuidle driver for the given CPU.
* @dev: cpuidle device for the given CPU.
*
* If there are states with the ->enter_freeze callback, find the deepest of
* If there are states with the ->enter_s2idle callback, find the deepest of
* them and enter it with frozen tick.
*/
int cpuidle_enter_freeze(struct cpuidle_driver *drv, struct cpuidle_device *dev)
int cpuidle_enter_s2idle(struct cpuidle_driver *drv, struct cpuidle_device *dev)
{
int index;
/*
* Find the deepest state with ->enter_freeze present, which guarantees
* Find the deepest state with ->enter_s2idle present, which guarantees
* that interrupts won't be enabled when it exits and allows the tick to
* be frozen safely.
*/
index = find_deepest_state(drv, dev, UINT_MAX, 0, true);
if (index > 0)
enter_freeze_proper(drv, dev, index);
enter_s2idle_proper(drv, dev, index);
return index;
}

4
drivers/cpuidle/dt_idle_states.c
View file

@ -41,9 +41,9 @@ static int init_state_node(struct cpuidle_state *idle_state,
/*
* Since this is not a "coupled" state, it's safe to assume interrupts
* won't be enabled when it exits allowing the tick to be frozen
* safely. So enter() can be also enter_freeze() callback.
* safely. So enter() can be also enter_s2idle() callback.
*/
idle_state->enter_freeze = match_id->data;
idle_state->enter_s2idle = match_id->data;
err = of_property_read_u32(state_node, "wakeup-latency-us",
&idle_state->exit_latency);