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-rw-r--r--arch/sh/kernel/cpu/shmobile/cpuidle.c8
-rw-r--r--drivers/acpi/ec.c36
-rw-r--r--drivers/acpi/sleep.c26
-rw-r--r--drivers/base/Kconfig4
-rw-r--r--drivers/base/power/Makefile1
-rw-r--r--drivers/base/power/qos-test.c117
-rw-r--r--drivers/base/power/qos.c73
-rw-r--r--drivers/cpufreq/Kconfig.powerpc8
-rw-r--r--drivers/cpufreq/Kconfig.x8616
-rw-r--r--drivers/cpuidle/Kconfig16
-rw-r--r--drivers/cpuidle/Kconfig.arm22
-rw-r--r--drivers/cpuidle/cpuidle.c2
-rw-r--r--drivers/cpuidle/poll_state.c1
-rw-r--r--drivers/devfreq/devfreq.c4
-rw-r--r--drivers/idle/intel_idle.c6
-rw-r--r--drivers/power/avs/Kconfig12
-rw-r--r--include/linux/cpuidle.h2
-rw-r--r--include/linux/pm_qos.h86
-rw-r--r--kernel/power/qos.c4
19 files changed, 324 insertions, 120 deletions
diff --git a/arch/sh/kernel/cpu/shmobile/cpuidle.c b/arch/sh/kernel/cpu/shmobile/cpuidle.c
index dbd2cdec2ddb..b0f9c8f8fd14 100644
--- a/arch/sh/kernel/cpu/shmobile/cpuidle.c
+++ b/arch/sh/kernel/cpu/shmobile/cpuidle.c
@@ -67,7 +67,7 @@ static struct cpuidle_driver cpuidle_driver = {
.enter = cpuidle_sleep_enter,
.name = "C2",
.desc = "SuperH Sleep Mode [SF]",
- .disabled = true,
+ .flags = CPUIDLE_FLAG_UNUSABLE,
},
{
.exit_latency = 2300,
@@ -76,7 +76,7 @@ static struct cpuidle_driver cpuidle_driver = {
.enter = cpuidle_sleep_enter,
.name = "C3",
.desc = "SuperH Mobile Standby Mode [SF]",
- .disabled = true,
+ .flags = CPUIDLE_FLAG_UNUSABLE,
},
},
.safe_state_index = 0,
@@ -86,10 +86,10 @@ static struct cpuidle_driver cpuidle_driver = {
int __init sh_mobile_setup_cpuidle(void)
{
if (sh_mobile_sleep_supported & SUSP_SH_SF)
- cpuidle_driver.states[1].disabled = false;
+ cpuidle_driver.states[1].flags = CPUIDLE_FLAG_NONE;
if (sh_mobile_sleep_supported & SUSP_SH_STANDBY)
- cpuidle_driver.states[2].disabled = false;
+ cpuidle_driver.states[2].flags = CPUIDLE_FLAG_NONE;
return cpuidle_register(&cpuidle_driver, NULL);
}
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 4fd84fbdac29..d05be13c1022 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -533,26 +533,10 @@ static void acpi_ec_enable_event(struct acpi_ec *ec)
}
#ifdef CONFIG_PM_SLEEP
-static bool acpi_ec_query_flushed(struct acpi_ec *ec)
+static void __acpi_ec_flush_work(void)
{
- bool flushed;
- unsigned long flags;
-
- spin_lock_irqsave(&ec->lock, flags);
- flushed = !ec->nr_pending_queries;
- spin_unlock_irqrestore(&ec->lock, flags);
- return flushed;
-}
-
-static void __acpi_ec_flush_event(struct acpi_ec *ec)
-{
- /*
- * When ec_freeze_events is true, we need to flush events in
- * the proper position before entering the noirq stage.
- */
- wait_event(ec->wait, acpi_ec_query_flushed(ec));
- if (ec_query_wq)
- flush_workqueue(ec_query_wq);
+ flush_scheduled_work(); /* flush ec->work */
+ flush_workqueue(ec_query_wq); /* flush queries */
}
static void acpi_ec_disable_event(struct acpi_ec *ec)
@@ -562,15 +546,21 @@ static void acpi_ec_disable_event(struct acpi_ec *ec)
spin_lock_irqsave(&ec->lock, flags);
__acpi_ec_disable_event(ec);
spin_unlock_irqrestore(&ec->lock, flags);
- __acpi_ec_flush_event(ec);
+
+ /*
+ * When ec_freeze_events is true, we need to flush events in
+ * the proper position before entering the noirq stage.
+ */
+ __acpi_ec_flush_work();
}
void acpi_ec_flush_work(void)
{
- if (first_ec)
- __acpi_ec_flush_event(first_ec);
+ /* Without ec_query_wq there is nothing to flush. */
+ if (!ec_query_wq)
+ return;
- flush_scheduled_work();
+ __acpi_ec_flush_work();
}
#endif /* CONFIG_PM_SLEEP */
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 2af937a8b1c5..6747a279621b 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -977,6 +977,16 @@ static int acpi_s2idle_prepare_late(void)
return 0;
}
+static void acpi_s2idle_sync(void)
+{
+ /*
+ * The EC driver uses the system workqueue and an additional special
+ * one, so those need to be flushed too.
+ */
+ acpi_ec_flush_work();
+ acpi_os_wait_events_complete(); /* synchronize Notify handling */
+}
+
static void acpi_s2idle_wake(void)
{
/*
@@ -1001,13 +1011,8 @@ static void acpi_s2idle_wake(void)
* should be missed by canceling the wakeup here.
*/
pm_system_cancel_wakeup();
- /*
- * The EC driver uses the system workqueue and an additional
- * special one, so those need to be flushed too.
- */
- acpi_os_wait_events_complete(); /* synchronize EC GPE processing */
- acpi_ec_flush_work();
- acpi_os_wait_events_complete(); /* synchronize Notify handling */
+
+ acpi_s2idle_sync();
rearm_wake_irq(acpi_sci_irq);
}
@@ -1024,6 +1029,13 @@ static void acpi_s2idle_restore_early(void)
static void acpi_s2idle_restore(void)
{
+ /*
+ * Drain pending events before restoring the working-state configuration
+ * of GPEs.
+ */
+ acpi_os_wait_events_complete(); /* synchronize GPE processing */
+ acpi_s2idle_sync();
+
s2idle_wakeup = false;
acpi_enable_all_runtime_gpes();
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 28b92e3cc570..c3b3b5c0b0da 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -148,6 +148,10 @@ config DEBUG_TEST_DRIVER_REMOVE
unusable. You should say N here unless you are explicitly looking to
test this functionality.
+config PM_QOS_KUNIT_TEST
+ bool "KUnit Test for PM QoS features"
+ depends on KUNIT
+
config HMEM_REPORTING
bool
default n
diff --git a/drivers/base/power/Makefile b/drivers/base/power/Makefile
index ec5bb190b9d0..8fdd0073eeeb 100644
--- a/drivers/base/power/Makefile
+++ b/drivers/base/power/Makefile
@@ -4,5 +4,6 @@ obj-$(CONFIG_PM_SLEEP) += main.o wakeup.o wakeup_stats.o
obj-$(CONFIG_PM_TRACE_RTC) += trace.o
obj-$(CONFIG_PM_GENERIC_DOMAINS) += domain.o domain_governor.o
obj-$(CONFIG_HAVE_CLK) += clock_ops.o
+obj-$(CONFIG_PM_QOS_KUNIT_TEST) += qos-test.o
ccflags-$(CONFIG_DEBUG_DRIVER) := -DDEBUG
diff --git a/drivers/base/power/qos-test.c b/drivers/base/power/qos-test.c
new file mode 100644
index 000000000000..3115db08d56b
--- /dev/null
+++ b/drivers/base/power/qos-test.c
@@ -0,0 +1,117 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2019 NXP
+ */
+#include <kunit/test.h>
+#include <linux/pm_qos.h>
+
+/* Basic test for aggregating two "min" requests */
+static void freq_qos_test_min(struct kunit *test)
+{
+ struct freq_constraints qos;
+ struct freq_qos_request req1, req2;
+ int ret;
+
+ freq_constraints_init(&qos);
+ memset(&req1, 0, sizeof(req1));
+ memset(&req2, 0, sizeof(req2));
+
+ ret = freq_qos_add_request(&qos, &req1, FREQ_QOS_MIN, 1000);
+ KUNIT_EXPECT_EQ(test, ret, 1);
+ ret = freq_qos_add_request(&qos, &req2, FREQ_QOS_MIN, 2000);
+ KUNIT_EXPECT_EQ(test, ret, 1);
+
+ KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), 2000);
+
+ ret = freq_qos_remove_request(&req2);
+ KUNIT_EXPECT_EQ(test, ret, 1);
+ KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), 1000);
+
+ ret = freq_qos_remove_request(&req1);
+ KUNIT_EXPECT_EQ(test, ret, 1);
+ KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN),
+ FREQ_QOS_MIN_DEFAULT_VALUE);
+}
+
+/* Test that requests for MAX_DEFAULT_VALUE have no effect */
+static void freq_qos_test_maxdef(struct kunit *test)
+{
+ struct freq_constraints qos;
+ struct freq_qos_request req1, req2;
+ int ret;
+
+ freq_constraints_init(&qos);
+ memset(&req1, 0, sizeof(req1));
+ memset(&req2, 0, sizeof(req2));
+ KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MAX),
+ FREQ_QOS_MAX_DEFAULT_VALUE);
+
+ ret = freq_qos_add_request(&qos, &req1, FREQ_QOS_MAX,
+ FREQ_QOS_MAX_DEFAULT_VALUE);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+ ret = freq_qos_add_request(&qos, &req2, FREQ_QOS_MAX,
+ FREQ_QOS_MAX_DEFAULT_VALUE);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+
+ /* Add max 1000 */
+ ret = freq_qos_update_request(&req1, 1000);
+ KUNIT_EXPECT_EQ(test, ret, 1);
+ KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MAX), 1000);
+
+ /* Add max 2000, no impact */
+ ret = freq_qos_update_request(&req2, 2000);
+ KUNIT_EXPECT_EQ(test, ret, 0);
+ KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MAX), 1000);
+
+ /* Remove max 1000, new max 2000 */
+ ret = freq_qos_remove_request(&req1);
+ KUNIT_EXPECT_EQ(test, ret, 1);
+ KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MAX), 2000);
+}
+
+/*
+ * Test that a freq_qos_request can be added again after removal
+ *
+ * This issue was solved by commit 05ff1ba412fd ("PM: QoS: Invalidate frequency
+ * QoS requests after removal")
+ */
+static void freq_qos_test_readd(struct kunit *test)
+{
+ struct freq_constraints qos;
+ struct freq_qos_request req;
+ int ret;
+
+ freq_constraints_init(&qos);
+ memset(&req, 0, sizeof(req));
+ KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN),
+ FREQ_QOS_MIN_DEFAULT_VALUE);
+
+ /* Add */
+ ret = freq_qos_add_request(&qos, &req, FREQ_QOS_MIN, 1000);
+ KUNIT_EXPECT_EQ(test, ret, 1);
+ KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), 1000);
+
+ /* Remove */
+ ret = freq_qos_remove_request(&req);
+ KUNIT_EXPECT_EQ(test, ret, 1);
+ KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN),
+ FREQ_QOS_MIN_DEFAULT_VALUE);
+
+ /* Add again */
+ ret = freq_qos_add_request(&qos, &req, FREQ_QOS_MIN, 2000);
+ KUNIT_EXPECT_EQ(test, ret, 1);
+ KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), 2000);
+}
+
+static struct kunit_case pm_qos_test_cases[] = {
+ KUNIT_CASE(freq_qos_test_min),
+ KUNIT_CASE(freq_qos_test_maxdef),
+ KUNIT_CASE(freq_qos_test_readd),
+ {},
+};
+
+static struct kunit_suite pm_qos_test_module = {
+ .name = "qos-kunit-test",
+ .test_cases = pm_qos_test_cases,
+};
+kunit_test_suite(pm_qos_test_module);
diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c
index 350dcafd751f..8e93167f1783 100644
--- a/drivers/base/power/qos.c
+++ b/drivers/base/power/qos.c
@@ -115,10 +115,20 @@ s32 dev_pm_qos_read_value(struct device *dev, enum dev_pm_qos_req_type type)
spin_lock_irqsave(&dev->power.lock, flags);
- if (type == DEV_PM_QOS_RESUME_LATENCY) {
+ switch (type) {
+ case DEV_PM_QOS_RESUME_LATENCY:
ret = IS_ERR_OR_NULL(qos) ? PM_QOS_RESUME_LATENCY_NO_CONSTRAINT
: pm_qos_read_value(&qos->resume_latency);
- } else {
+ break;
+ case DEV_PM_QOS_MIN_FREQUENCY:
+ ret = IS_ERR_OR_NULL(qos) ? PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE
+ : freq_qos_read_value(&qos->freq, FREQ_QOS_MIN);
+ break;
+ case DEV_PM_QOS_MAX_FREQUENCY:
+ ret = IS_ERR_OR_NULL(qos) ? PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE
+ : freq_qos_read_value(&qos->freq, FREQ_QOS_MAX);
+ break;
+ default:
WARN_ON(1);
ret = 0;
}
@@ -159,6 +169,10 @@ static int apply_constraint(struct dev_pm_qos_request *req,
req->dev->power.set_latency_tolerance(req->dev, value);
}
break;
+ case DEV_PM_QOS_MIN_FREQUENCY:
+ case DEV_PM_QOS_MAX_FREQUENCY:
+ ret = freq_qos_apply(&req->data.freq, action, value);
+ break;
case DEV_PM_QOS_FLAGS:
ret = pm_qos_update_flags(&qos->flags, &req->data.flr,
action, value);
@@ -209,6 +223,8 @@ static int dev_pm_qos_constraints_allocate(struct device *dev)
c->no_constraint_value = PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT;
c->type = PM_QOS_MIN;
+ freq_constraints_init(&qos->freq);
+
INIT_LIST_HEAD(&qos->flags.list);
spin_lock_irq(&dev->power.lock);
@@ -269,6 +285,20 @@ void dev_pm_qos_constraints_destroy(struct device *dev)
memset(req, 0, sizeof(*req));
}
+ c = &qos->freq.min_freq;
+ plist_for_each_entry_safe(req, tmp, &c->list, data.freq.pnode) {
+ apply_constraint(req, PM_QOS_REMOVE_REQ,
+ PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE);
+ memset(req, 0, sizeof(*req));
+ }
+
+ c = &qos->freq.max_freq;
+ plist_for_each_entry_safe(req, tmp, &c->list, data.freq.pnode) {
+ apply_constraint(req, PM_QOS_REMOVE_REQ,
+ PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE);
+ memset(req, 0, sizeof(*req));
+ }
+
f = &qos->flags;
list_for_each_entry_safe(req, tmp, &f->list, data.flr.node) {
apply_constraint(req, PM_QOS_REMOVE_REQ, PM_QOS_DEFAULT_VALUE);
@@ -314,11 +344,22 @@ static int __dev_pm_qos_add_request(struct device *dev,
ret = dev_pm_qos_constraints_allocate(dev);
trace_dev_pm_qos_add_request(dev_name(dev), type, value);
- if (!ret) {
- req->dev = dev;
- req->type = type;
+ if (ret)
+ return ret;
+
+ req->dev = dev;
+ req->type = type;
+ if (req->type == DEV_PM_QOS_MIN_FREQUENCY)
+ ret = freq_qos_add_request(&dev->power.qos->freq,
+ &req->data.freq,
+ FREQ_QOS_MIN, value);
+ else if (req->type == DEV_PM_QOS_MAX_FREQUENCY)
+ ret = freq_qos_add_request(&dev->power.qos->freq,
+ &req->data.freq,
+ FREQ_QOS_MAX, value);
+ else
ret = apply_constraint(req, PM_QOS_ADD_REQ, value);
- }
+
return ret;
}
@@ -382,6 +423,10 @@ static int __dev_pm_qos_update_request(struct dev_pm_qos_request *req,
case DEV_PM_QOS_LATENCY_TOLERANCE:
curr_value = req->data.pnode.prio;
break;
+ case DEV_PM_QOS_MIN_FREQUENCY:
+ case DEV_PM_QOS_MAX_FREQUENCY:
+ curr_value = req->data.freq.pnode.prio;
+ break;
case DEV_PM_QOS_FLAGS:
curr_value = req->data.flr.flags;
break;
@@ -507,6 +552,14 @@ int dev_pm_qos_add_notifier(struct device *dev, struct notifier_block *notifier,
ret = blocking_notifier_chain_register(dev->power.qos->resume_latency.notifiers,
notifier);
break;
+ case DEV_PM_QOS_MIN_FREQUENCY:
+ ret = freq_qos_add_notifier(&dev->power.qos->freq,
+ FREQ_QOS_MIN, notifier);
+ break;
+ case DEV_PM_QOS_MAX_FREQUENCY:
+ ret = freq_qos_add_notifier(&dev->power.qos->freq,
+ FREQ_QOS_MAX, notifier);
+ break;
default:
WARN_ON(1);
ret = -EINVAL;
@@ -546,6 +599,14 @@ int dev_pm_qos_remove_notifier(struct device *dev,
ret = blocking_notifier_chain_unregister(dev->power.qos->resume_latency.notifiers,
notifier);
break;
+ case DEV_PM_QOS_MIN_FREQUENCY:
+ ret = freq_qos_remove_notifier(&dev->power.qos->freq,
+ FREQ_QOS_MIN, notifier);
+ break;
+ case DEV_PM_QOS_MAX_FREQUENCY:
+ ret = freq_qos_remove_notifier(&dev->power.qos->freq,
+ FREQ_QOS_MAX, notifier);
+ break;
default:
WARN_ON(1);
ret = -EINVAL;
diff --git a/drivers/cpufreq/Kconfig.powerpc b/drivers/cpufreq/Kconfig.powerpc
index 35b4f700f054..58151ca56695 100644
--- a/drivers/cpufreq/Kconfig.powerpc
+++ b/drivers/cpufreq/Kconfig.powerpc
@@ -48,9 +48,9 @@ config PPC_PASEMI_CPUFREQ
PWRficient processors.
config POWERNV_CPUFREQ
- tristate "CPU frequency scaling for IBM POWERNV platform"
- depends on PPC_POWERNV
- default y
- help
+ tristate "CPU frequency scaling for IBM POWERNV platform"
+ depends on PPC_POWERNV
+ default y
+ help
This adds support for CPU frequency switching on IBM POWERNV
platform
diff --git a/drivers/cpufreq/Kconfig.x86 b/drivers/cpufreq/Kconfig.x86
index dfa6457deaf6..a6528388952e 100644
--- a/drivers/cpufreq/Kconfig.x86
+++ b/drivers/cpufreq/Kconfig.x86
@@ -4,17 +4,17 @@
#
config X86_INTEL_PSTATE
- bool "Intel P state control"
- depends on X86
- select ACPI_PROCESSOR if ACPI
- select ACPI_CPPC_LIB if X86_64 && ACPI && SCHED_MC_PRIO
- help
- This driver provides a P state for Intel core processors.
+ bool "Intel P state control"
+ depends on X86
+ select ACPI_PROCESSOR if ACPI
+ select ACPI_CPPC_LIB if X86_64 && ACPI && SCHED_MC_PRIO
+ help
+ This driver provides a P state for Intel core processors.
The driver implements an internal governor and will become
- the scaling driver and governor for Sandy bridge processors.
+ the scaling driver and governor for Sandy bridge processors.
When this driver is enabled it will become the preferred
- scaling driver for Sandy bridge processors.
+ scaling driver for Sandy bridge processors.
If in doubt, say N.
diff --git a/drivers/cpuidle/Kconfig b/drivers/cpuidle/Kconfig
index 88727b7c0d59..c0aeedd66f02 100644
--- a/drivers/cpuidle/Kconfig
+++ b/drivers/cpuidle/Kconfig
@@ -16,7 +16,7 @@ config CPU_IDLE
if CPU_IDLE
config CPU_IDLE_MULTIPLE_DRIVERS
- bool
+ bool
config CPU_IDLE_GOV_LADDER
bool "Ladder governor (for periodic timer tick)"
@@ -63,13 +63,13 @@ source "drivers/cpuidle/Kconfig.powerpc"
endmenu
config HALTPOLL_CPUIDLE
- tristate "Halt poll cpuidle driver"
- depends on X86 && KVM_GUEST
- default y
- help
- This option enables halt poll cpuidle driver, which allows to poll
- before halting in the guest (more efficient than polling in the
- host via halt_poll_ns for some scenarios).
+ tristate "Halt poll cpuidle driver"
+ depends on X86 && KVM_GUEST
+ default y
+ help
+ This option enables halt poll cpuidle driver, which allows to poll
+ before halting in the guest (more efficient than polling in the
+ host via halt_poll_ns for some scenarios).
endif
diff --git a/drivers/cpuidle/Kconfig.arm b/drivers/cpuidle/Kconfig.arm
index d8530475493c..a224d33dda7f 100644
--- a/drivers/cpuidle/Kconfig.arm
+++ b/drivers/cpuidle/Kconfig.arm
@@ -3,15 +3,15 @@
# ARM CPU Idle drivers
#
config ARM_CPUIDLE
- bool "Generic ARM/ARM64 CPU idle Driver"
- select DT_IDLE_STATES
+ bool "Generic ARM/ARM64 CPU idle Driver"
+ select DT_IDLE_STATES
select CPU_IDLE_MULTIPLE_DRIVERS
- help
- Select this to enable generic cpuidle driver for ARM.
- It provides a generic idle driver whose idle states are configured
- at run-time through DT nodes. The CPUidle suspend backend is
- initialized by calling the CPU operations init idle hook
- provided by architecture code.
+ help
+ Select this to enable generic cpuidle driver for ARM.
+ It provides a generic idle driver whose idle states are configured
+ at run-time through DT nodes. The CPUidle suspend backend is
+ initialized by calling the CPU operations init idle hook
+ provided by architecture code.
config ARM_PSCI_CPUIDLE
bool "PSCI CPU idle Driver"
@@ -65,21 +65,21 @@ config ARM_U8500_CPUIDLE
bool "Cpu Idle Driver for the ST-E u8500 processors"
depends on ARCH_U8500 && !ARM64
help
- Select this to enable cpuidle for ST-E u8500 processors
+ Select this to enable cpuidle for ST-E u8500 processors.
config ARM_AT91_CPUIDLE
bool "Cpu Idle Driver for the AT91 processors"
default y
depends on ARCH_AT91 && !ARM64
help
- Select this to enable cpuidle for AT91 processors
+ Select this to enable cpuidle for AT91 processors.
config ARM_EXYNOS_CPUIDLE
bool "Cpu Idle Driver for the Exynos processors"
depends on ARCH_EXYNOS && !ARM64
select ARCH_NEEDS_CPU_IDLE_COUPLED if SMP
help
- Select this to enable cpuidle for Exynos processors
+ Select this to enable cpuidle for Exynos processors.
config ARM_MVEBU_V7_CPUIDLE
bool "CPU Idle Driver for mvebu v7 family processors"
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 569dbac443bd..0005be5ea2b4 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -572,7 +572,7 @@ static int __cpuidle_register_device(struct cpuidle_device *dev)
return -EINVAL;
for (i = 0; i < drv->state_count; i++)
- if (drv->states[i].disabled)
+ if (drv->states[i].flags & CPUIDLE_FLAG_UNUSABLE)
dev->states_usage[i].disable |= CPUIDLE_STATE_DISABLED_BY_DRIVER;
per_cpu(cpuidle_devices, dev->cpu) = dev;
diff --git a/drivers/cpuidle/poll_state.c b/drivers/cpuidle/poll_state.c
index 9f1ace9c53da..f7e83613ae94 100644
--- a/drivers/cpuidle/poll_state.c
+++ b/drivers/cpuidle/poll_state.c
@@ -53,7 +53,6 @@ void cpuidle_poll_state_init(struct cpuidle_driver *drv)
state->target_residency_ns = 0;
state->power_usage = -1;
state->enter = poll_idle;
- state->disabled = false;
state->flags = CPUIDLE_FLAG_POLLING;
}
EXPORT_SYMBOL_GPL(cpuidle_poll_state_init);
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index f840e61e5a27..425149e8bab0 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -921,7 +921,9 @@ int devfreq_suspend_device(struct devfreq *devfreq)
}
if (devfreq->suspend_freq) {
+ mutex_lock(&devfreq->lock);
ret = devfreq_set_target(devfreq, devfreq->suspend_freq, 0);
+ mutex_unlock(&devfreq->lock);
if (ret)
return ret;
}
@@ -949,7 +951,9 @@ int devfreq_resume_device(struct devfreq *devfreq)
return 0;
if (devfreq->resume_freq) {
+ mutex_lock(&devfreq->lock);
ret = devfreq_set_target(devfreq, devfreq->resume_freq, 0);
+ mutex_unlock(&devfreq->lock);
if (ret)
return ret;
}
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index 347b08b56042..75fd2a7b0842 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -1291,8 +1291,8 @@ static void sklh_idle_state_table_update(void)
return;
}
- skl_cstates[5].disabled = 1; /* C8-SKL */
- skl_cstates[6].disabled = 1; /* C9-SKL */
+ skl_cstates[5].flags |= CPUIDLE_FLAG_UNUSABLE; /* C8-SKL */
+ skl_cstates[6].flags |= CPUIDLE_FLAG_UNUSABLE; /* C9-SKL */
}
/*
* intel_idle_state_table_update()
@@ -1355,7 +1355,7 @@ static void __init intel_idle_cpuidle_driver_init(void)
continue;
/* if state marked as disabled, skip it */
- if (cpuidle_state_table[cstate].disabled != 0) {
+ if (cpuidle_state_table[cstate].flags & CPUIDLE_FLAG_UNUSABLE) {
pr_debug("state %s is disabled\n",
cpuidle_state_table[cstate].name);
continue;
diff --git a/drivers/power/avs/Kconfig b/drivers/power/avs/Kconfig
index b5a217b828dc..089b6244b716 100644
--- a/drivers/power/avs/Kconfig
+++ b/drivers/power/avs/Kconfig
@@ -13,9 +13,9 @@ menuconfig POWER_AVS
Say Y here to enable Adaptive Voltage Scaling class support.
config ROCKCHIP_IODOMAIN
- tristate "Rockchip IO domain support"
- depends on POWER_AVS && ARCH_ROCKCHIP && OF
- help
- Say y here to enable support io domains on Rockchip SoCs. It is
- necessary for the io domain setting of the SoC to match the
- voltage supplied by the regulators.
+ tristate "Rockchip IO domain support"
+ depends on POWER_AVS && ARCH_ROCKCHIP && OF
+ help
+ Say y here to enable support io domains on Rockchip SoCs. It is
+ necessary for the io domain setting of the SoC to match the
+ voltage supplied by the regulators.
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index 2dbe46b7c213..1dabe36bd011 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -54,7 +54,6 @@ struct cpuidle_state {
unsigned int exit_latency; /* in US */
int power_usage; /* in mW */
unsigned int target_residency; /* in US */
- bool disabled; /* disabled on all CPUs */
int (*enter) (struct cpuidle_device *dev,
struct cpuidle_driver *drv,
@@ -77,6 +76,7 @@ struct cpuidle_state {
#define CPUIDLE_FLAG_POLLING BIT(0) /* polling state */
#define CPUIDLE_FLAG_COUPLED BIT(1) /* state applies to multiple cpus */
#define CPUIDLE_FLAG_TIMER_STOP BIT(2) /* timer is stopped on this state */
+#define CPUIDLE_FLAG_UNUSABLE BIT(3) /* avoid using this state */
struct cpuidle_device_kobj;
struct cpuidle_state_kobj;
diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h
index ebf5ef17cc2a..19eafca5680e 100644
--- a/include/linux/pm_qos.h
+++ b/include/linux/pm_qos.h
@@ -34,6 +34,8 @@ enum pm_qos_flags_status {
#define PM_QOS_RESUME_LATENCY_NO_CONSTRAINT PM_QOS_LATENCY_ANY
#define PM_QOS_RESUME_LATENCY_NO_CONSTRAINT_NS PM_QOS_LATENCY_ANY_NS
#define PM_QOS_LATENCY_TOLERANCE_DEFAULT_VALUE 0
+#define PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE 0
+#define PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE FREQ_QOS_MAX_DEFAULT_VALUE
#define PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT (-1)
#define PM_QOS_FLAG_NO_POWER_OFF (1 << 0)
@@ -49,21 +51,6 @@ struct pm_qos_flags_request {
s32 flags; /* Do not change to 64 bit */
};
-enum dev_pm_qos_req_type {
- DEV_PM_QOS_RESUME_LATENCY = 1,
- DEV_PM_QOS_LATENCY_TOLERANCE,
- DEV_PM_QOS_FLAGS,
-};
-
-struct dev_pm_qos_request {
- enum dev_pm_qos_req_type type;
- union {
- struct plist_node pnode;
- struct pm_qos_flags_request flr;
- } data;
- struct device *dev;
-};
-
enum pm_qos_type {
PM_QOS_UNITIALIZED,
PM_QOS_MAX, /* return the largest value */
@@ -90,9 +77,51 @@ struct pm_qos_flags {
s32 effective_flags; /* Do not change to 64 bit */
};
+
+#define FREQ_QOS_MIN_DEFAULT_VALUE 0
+#define FREQ_QOS_MAX_DEFAULT_VALUE S32_MAX
+
+enum freq_qos_req_type {
+ FREQ_QOS_MIN = 1,
+ FREQ_QOS_MAX,
+};
+
+struct freq_constraints {
+ struct pm_qos_constraints min_freq;
+ struct blocking_notifier_head min_freq_notifiers;
+ struct pm_qos_constraints max_freq;
+ struct blocking_notifier_head max_freq_notifiers;
+};
+
+struct freq_qos_request {
+ enum freq_qos_req_type type;
+ struct plist_node pnode;
+ struct freq_constraints *qos;
+};
+
+
+enum dev_pm_qos_req_type {
+ DEV_PM_QOS_RESUME_LATENCY = 1,
+ DEV_PM_QOS_LATENCY_TOLERANCE,
+ DEV_PM_QOS_MIN_FREQUENCY,
+ DEV_PM_QOS_MAX_FREQUENCY,
+ DEV_PM_QOS_FLAGS,
+};
+
+struct dev_pm_qos_request {
+ enum dev_pm_qos_req_type type;
+ union {
+ struct plist_node pnode;
+ struct pm_qos_flags_request flr;
+ struct freq_qos_request freq;
+ } data;
+ struct device *dev;
+};
+
struct dev_pm_qos {
struct pm_qos_constraints resume_latency;
struct pm_qos_constraints latency_tolerance;
+ struct freq_constraints freq;
struct pm_qos_flags flags;
struct dev_pm_qos_request *resume_latency_req;
struct dev_pm_qos_request *latency_tolerance_req;
@@ -191,6 +220,10 @@ static inline s32 dev_pm_qos_read_value(struct device *dev,
switch (type) {
case DEV_PM_QOS_RESUME_LATENCY:
return PM_QOS_RESUME_LATENCY_NO_CONSTRAINT;
+ case DEV_PM_QOS_MIN_FREQUENCY:
+ return PM_QOS_MIN_FREQUENCY_DEFAULT_VALUE;
+ case DEV_PM_QOS_MAX_FREQUENCY:
+ return PM_QOS_MAX_FREQUENCY_DEFAULT_VALUE;
default:
WARN_ON(1);
return 0;
@@ -255,27 +288,6 @@ static inline s32 dev_pm_qos_raw_resume_latency(struct device *dev)
}
#endif
-#define FREQ_QOS_MIN_DEFAULT_VALUE 0
-#define FREQ_QOS_MAX_DEFAULT_VALUE (-1)
-
-enum freq_qos_req_type {
- FREQ_QOS_MIN = 1,
- FREQ_QOS_MAX,
-};
-
-struct freq_constraints {
- struct pm_qos_constraints min_freq;
- struct blocking_notifier_head min_freq_notifiers;
- struct pm_qos_constraints max_freq;
- struct blocking_notifier_head max_freq_notifiers;
-};
-
-struct freq_qos_request {
- enum freq_qos_req_type type;
- struct plist_node pnode;
- struct freq_constraints *qos;
-};
-
static inline int freq_qos_request_active(struct freq_qos_request *req)
{
return !IS_ERR_OR_NULL(req->qos);
@@ -291,6 +303,8 @@ int freq_qos_add_request(struct freq_constraints *qos,
enum freq_qos_req_type type, s32 value);
int freq_qos_update_request(struct freq_qos_request *req, s32 new_value);
int freq_qos_remove_request(struct freq_qos_request *req);
+int freq_qos_apply(struct freq_qos_request *req,
+ enum pm_qos_req_action action, s32 value);
int freq_qos_add_notifier(struct freq_constraints *qos,
enum freq_qos_req_type type,
diff --git a/kernel/power/qos.c b/kernel/power/qos.c
index a45cba7df0ae..83edf8698118 100644
--- a/kernel/power/qos.c
+++ b/kernel/power/qos.c
@@ -714,8 +714,10 @@ s32 freq_qos_read_value(struct freq_constraints *qos,
* @req: Constraint request to apply.
* @action: Action to perform (add/update/remove).
* @value: Value to assign to the QoS request.
+ *
+ * This is only meant to be called from inside pm_qos, not drivers.
*/
-static int freq_qos_apply(struct freq_qos_request *req,
+int freq_qos_apply(struct freq_qos_request *req,
enum pm_qos_req_action action, s32 value)
{
int ret;
generated by cgit (git 2.34.1) at 2024-05-29 21:33:40 +0000