From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
acpi_idle_enter_c1() and acpi_idle_enter_simple() are close enough to
each other that they can be merged into one function which reduces
duplication of code quite a bit.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
---
drivers/acpi/processor_idle.c | 43 +++++-------------------------------------
1 file changed, 6 insertions(+), 37 deletions(-)
Index: linux-pm/drivers/acpi/processor_idle.c
===================================================================
--- linux-pm.orig/drivers/acpi/processor_idle.c
+++ linux-pm/drivers/acpi/processor_idle.c
@@ -704,34 +704,6 @@ static void acpi_idle_do_entry(struct ac
}
/**
- * acpi_idle_enter_c1 - enters an ACPI C1 state-type
- * @dev: the target CPU
- * @drv: cpuidle driver containing cpuidle state info
- * @index: index of target state
- *
- * This is equivalent to the HALT instruction.
- */
-static int acpi_idle_enter_c1(struct cpuidle_device *dev,
- struct cpuidle_driver *drv, int index)
-{
- struct acpi_processor *pr;
- struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu);
-
- pr = __this_cpu_read(processors);
-
- if (unlikely(!pr))
- return -EINVAL;
-
- lapic_timer_state_broadcast(pr, cx, 1);
- acpi_idle_do_entry(cx);
-
- lapic_timer_state_broadcast(pr, cx, 0);
-
- return index;
-}
-
-
-/**
* acpi_idle_play_dead - enters an ACPI state for long-term idle (i.e. off-lining)
* @dev: the target CPU
* @index: the index of suggested state
@@ -766,7 +738,7 @@ static bool acpi_idle_fallback_to_c1(str
}
/**
- * acpi_idle_enter_simple - enters an ACPI state without BM handling
+ * acpi_idle_enter_simple - enters a CPU idle state without BM handling
* @dev: the target CPU
* @drv: cpuidle driver with cpuidle state information
* @index: the index of suggested state
@@ -782,8 +754,10 @@ static int acpi_idle_enter_simple(struct
if (unlikely(!pr))
return -EINVAL;
- if (acpi_idle_fallback_to_c1(pr))
- return acpi_idle_enter_c1(dev, drv, CPUIDLE_DRIVER_STATE_START);
+ if (cx->type != ACPI_STATE_C1 && acpi_idle_fallback_to_c1(pr)) {
+ index = CPUIDLE_DRIVER_STATE_START;
+ cx = per_cpu(acpi_cstate[index], dev->cpu);
+ }
lapic_timer_state_broadcast(pr, cx, 1);
@@ -819,7 +793,7 @@ static int acpi_idle_enter_bm(struct cpu
return -EINVAL;
if (acpi_idle_fallback_to_c1(pr))
- return acpi_idle_enter_c1(dev, drv, CPUIDLE_DRIVER_STATE_START);
+ return acpi_idle_enter_simple(dev, drv, CPUIDLE_DRIVER_STATE_START);
if (!cx->bm_sts_skip && acpi_idle_bm_check()) {
if (drv->safe_state_index >= 0) {
@@ -967,11 +941,6 @@ static int acpi_processor_setup_cpuidle_
switch (cx->type) {
case ACPI_STATE_C1:
- state->enter = acpi_idle_enter_c1;
- state->enter_dead = acpi_idle_play_dead;
- drv->safe_state_index = count;
- break;
-
case ACPI_STATE_C2:
state->enter = acpi_idle_enter_simple;
state->enter_dead = acpi_idle_play_dead;
--
To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
