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PM / s2idle: Rename ->enter_freeze to ->enter_s2idle

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Rename the ->enter_freeze cpuidle driver callback to ->enter_s2idle
to make it clear that it is used for entering suspend-to-idle and
rename the related functions, variables and so on accordingly.

Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Rafael J. Wysocki 2017-08-10 00:14:45 +02:00
commit 28ba086ed3
7 changed files with 111 additions and 111 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);