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-rw-r--r--drivers/cpuidle/Kconfig2
-rw-r--r--drivers/cpuidle/coupled.c1
-rw-r--r--drivers/cpuidle/cpuidle-clps711x.c8
-rw-r--r--drivers/cpuidle/cpuidle-exynos.c5
-rw-r--r--drivers/cpuidle/cpuidle-powernv.c2
-rw-r--r--drivers/cpuidle/cpuidle-ux500.c5
-rw-r--r--drivers/cpuidle/cpuidle.c8
-rw-r--r--drivers/cpuidle/governors/ladder.c9
-rw-r--r--drivers/cpuidle/governors/menu.c27
9 files changed, 36 insertions, 31 deletions
diff --git a/drivers/cpuidle/Kconfig b/drivers/cpuidle/Kconfig
index 8c7930b5a..7e48eb5bf 100644
--- a/drivers/cpuidle/Kconfig
+++ b/drivers/cpuidle/Kconfig
@@ -19,11 +19,9 @@ config CPU_IDLE_MULTIPLE_DRIVERS
config CPU_IDLE_GOV_LADDER
bool "Ladder governor (for periodic timer tick)"
- default y
config CPU_IDLE_GOV_MENU
bool "Menu governor (for tickless system)"
- default y
config DT_IDLE_STATES
bool
diff --git a/drivers/cpuidle/coupled.c b/drivers/cpuidle/coupled.c
index 344058f85..d5657d50a 100644
--- a/drivers/cpuidle/coupled.c
+++ b/drivers/cpuidle/coupled.c
@@ -119,7 +119,6 @@ struct cpuidle_coupled {
#define CPUIDLE_COUPLED_NOT_IDLE (-1)
-static DEFINE_MUTEX(cpuidle_coupled_lock);
static DEFINE_PER_CPU(struct call_single_data, cpuidle_coupled_poke_cb);
/*
diff --git a/drivers/cpuidle/cpuidle-clps711x.c b/drivers/cpuidle/cpuidle-clps711x.c
index 18a7f7380..66a9f231e 100644
--- a/drivers/cpuidle/cpuidle-clps711x.c
+++ b/drivers/cpuidle/cpuidle-clps711x.c
@@ -12,7 +12,7 @@
#include <linux/cpuidle.h>
#include <linux/err.h>
#include <linux/io.h>
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/platform_device.h>
#define CLPS711X_CPUIDLE_NAME "clps711x-cpuidle"
@@ -56,8 +56,4 @@ static struct platform_driver clps711x_cpuidle_driver = {
.name = CLPS711X_CPUIDLE_NAME,
},
};
-module_platform_driver_probe(clps711x_cpuidle_driver, clps711x_cpuidle_probe);
-
-MODULE_AUTHOR("Alexander Shiyan <shc_work@mail.ru>");
-MODULE_DESCRIPTION("CLPS711X CPU idle driver");
-MODULE_LICENSE("GPL");
+builtin_platform_driver_probe(clps711x_cpuidle_driver, clps711x_cpuidle_probe);
diff --git a/drivers/cpuidle/cpuidle-exynos.c b/drivers/cpuidle/cpuidle-exynos.c
index b5f0a9cc8..00cd129b1 100644
--- a/drivers/cpuidle/cpuidle-exynos.c
+++ b/drivers/cpuidle/cpuidle-exynos.c
@@ -14,7 +14,7 @@
#include <linux/cpuidle.h>
#include <linux/cpu_pm.h>
#include <linux/export.h>
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/platform_data/cpuidle-exynos.h>
@@ -142,5 +142,4 @@ static struct platform_driver exynos_cpuidle_driver = {
.name = "exynos_cpuidle",
},
};
-
-module_platform_driver(exynos_cpuidle_driver);
+builtin_platform_driver(exynos_cpuidle_driver);
diff --git a/drivers/cpuidle/cpuidle-powernv.c b/drivers/cpuidle/cpuidle-powernv.c
index 845bafcfa..e12dc30d8 100644
--- a/drivers/cpuidle/cpuidle-powernv.c
+++ b/drivers/cpuidle/cpuidle-powernv.c
@@ -264,7 +264,7 @@ static int powernv_idle_probe(void)
if (cpuidle_disable != IDLE_NO_OVERRIDE)
return -ENODEV;
- if (firmware_has_feature(FW_FEATURE_OPALv3)) {
+ if (firmware_has_feature(FW_FEATURE_OPAL)) {
cpuidle_state_table = powernv_states;
/* Device tree can indicate more idle states */
max_idle_state = powernv_add_idle_states();
diff --git a/drivers/cpuidle/cpuidle-ux500.c b/drivers/cpuidle/cpuidle-ux500.c
index 8bf895c00..7941a090b 100644
--- a/drivers/cpuidle/cpuidle-ux500.c
+++ b/drivers/cpuidle/cpuidle-ux500.c
@@ -9,7 +9,7 @@
* published by the Free Software Foundation.
*/
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/cpuidle.h>
#include <linux/spinlock.h>
#include <linux/atomic.h>
@@ -124,5 +124,4 @@ static struct platform_driver dbx500_cpuidle_plat_driver = {
},
.probe = dbx500_cpuidle_probe,
};
-
-module_platform_driver(dbx500_cpuidle_plat_driver);
+builtin_platform_driver(dbx500_cpuidle_plat_driver);
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 17a6dc0e2..f996efc56 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -79,9 +79,9 @@ static int find_deepest_state(struct cpuidle_driver *drv,
bool freeze)
{
unsigned int latency_req = 0;
- int i, ret = -ENXIO;
+ int i, ret = 0;
- for (i = 0; i < drv->state_count; i++) {
+ for (i = 1; i < drv->state_count; i++) {
struct cpuidle_state *s = &drv->states[i];
struct cpuidle_state_usage *su = &dev->states_usage[i];
@@ -153,7 +153,7 @@ int cpuidle_enter_freeze(struct cpuidle_driver *drv, struct cpuidle_device *dev)
* be frozen safely.
*/
index = find_deepest_state(drv, dev, UINT_MAX, 0, true);
- if (index >= 0)
+ if (index > 0)
enter_freeze_proper(drv, dev, index);
return index;
@@ -243,7 +243,7 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv,
* @drv: the cpuidle driver
* @dev: the cpuidle device
*
- * Returns the index of the idle state.
+ * Returns the index of the idle state. The return value must not be negative.
*/
int cpuidle_select(struct cpuidle_driver *drv, struct cpuidle_device *dev)
{
diff --git a/drivers/cpuidle/governors/ladder.c b/drivers/cpuidle/governors/ladder.c
index 401c0106e..63bd5a403 100644
--- a/drivers/cpuidle/governors/ladder.c
+++ b/drivers/cpuidle/governors/ladder.c
@@ -17,6 +17,7 @@
#include <linux/pm_qos.h>
#include <linux/module.h>
#include <linux/jiffies.h>
+#include <linux/tick.h>
#include <asm/io.h>
#include <asm/uaccess.h>
@@ -184,6 +185,14 @@ static struct cpuidle_governor ladder_governor = {
*/
static int __init init_ladder(void)
{
+ /*
+ * When NO_HZ is disabled, or when booting with nohz=off, the ladder
+ * governor is better so give it a higher rating than the menu
+ * governor.
+ */
+ if (!tick_nohz_enabled)
+ ladder_governor.rating = 25;
+
return cpuidle_register_governor(&ladder_governor);
}
diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c
index 22e4463d1..0742b3296 100644
--- a/drivers/cpuidle/governors/menu.c
+++ b/drivers/cpuidle/governors/menu.c
@@ -294,8 +294,6 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev)
data->needs_update = 0;
}
- data->last_state_idx = CPUIDLE_DRIVER_STATE_START - 1;
-
/* Special case when user has set very strict latency requirement */
if (unlikely(latency_req == 0))
return 0;
@@ -326,20 +324,25 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev)
if (latency_req > interactivity_req)
latency_req = interactivity_req;
- /*
- * We want to default to C1 (hlt), not to busy polling
- * unless the timer is happening really really soon.
- */
- if (data->next_timer_us > 5 &&
- !drv->states[CPUIDLE_DRIVER_STATE_START].disabled &&
- dev->states_usage[CPUIDLE_DRIVER_STATE_START].disable == 0)
+ if (CPUIDLE_DRIVER_STATE_START > 0) {
+ data->last_state_idx = CPUIDLE_DRIVER_STATE_START - 1;
+ /*
+ * We want to default to C1 (hlt), not to busy polling
+ * unless the timer is happening really really soon.
+ */
+ if (interactivity_req > 20 &&
+ !drv->states[CPUIDLE_DRIVER_STATE_START].disabled &&
+ dev->states_usage[CPUIDLE_DRIVER_STATE_START].disable == 0)
+ data->last_state_idx = CPUIDLE_DRIVER_STATE_START;
+ } else {
data->last_state_idx = CPUIDLE_DRIVER_STATE_START;
+ }
/*
* Find the idle state with the lowest power while satisfying
* our constraints.
*/
- for (i = CPUIDLE_DRIVER_STATE_START; i < drv->state_count; i++) {
+ for (i = data->last_state_idx + 1; i < drv->state_count; i++) {
struct cpuidle_state *s = &drv->states[i];
struct cpuidle_state_usage *su = &dev->states_usage[i];
@@ -404,8 +407,10 @@ static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev)
measured_us = cpuidle_get_last_residency(dev);
/* Deduct exit latency */
- if (measured_us > target->exit_latency)
+ if (measured_us > 2 * target->exit_latency)
measured_us -= target->exit_latency;
+ else
+ measured_us /= 2;
/* Make sure our coefficients do not exceed unity */
if (measured_us > data->next_timer_us)
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-13 18:09:59 +0000