summaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-06-12 13:43:08 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-06-12 13:43:08 +0200
commitd715a226b0b3dae48865d05e8c36175a8f75a809 (patch)
tree996e45c4075f8e3032daeea8de7bd355fde3cc00 /drivers
parent589e18a973bd6bb8abd2c6d4d8a1dcf5ae1dff61 (diff)
parente8bca479c3f269ebb3a3acea5ef63314bb677060 (diff)
downloadlinux-d715a226b0b3dae48865d05e8c36175a8f75a809.tar.bz2
Merge branch 'pm-sleep'
* pm-sleep: PM / sleep: trace events for device PM callbacks PM / sleep: trace events for suspend/resume
Diffstat (limited to 'drivers')
-rw-r--r--drivers/acpi/sleep.c3
-rw-r--r--drivers/base/power/main.c30
-rw-r--r--drivers/base/syscore.c5
3 files changed, 34 insertions, 4 deletions
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index c11e3795431b..b3e3cc73ba79 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -19,6 +19,7 @@
#include <linux/acpi.h>
#include <linux/module.h>
#include <asm/io.h>
+#include <trace/events/power.h>
#include "internal.h"
#include "sleep.h"
@@ -501,6 +502,7 @@ static int acpi_suspend_enter(suspend_state_t pm_state)
ACPI_FLUSH_CPU_CACHE();
+ trace_suspend_resume(TPS("acpi_suspend"), acpi_state, true);
switch (acpi_state) {
case ACPI_STATE_S1:
barrier();
@@ -516,6 +518,7 @@ static int acpi_suspend_enter(suspend_state_t pm_state)
pr_info(PREFIX "Low-level resume complete\n");
break;
}
+ trace_suspend_resume(TPS("acpi_suspend"), acpi_state, false);
/* This violates the spec but is required for bug compatibility. */
acpi_write_bit_register(ACPI_BITREG_SCI_ENABLE, 1);
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 343ffad59377..bf412961a934 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -214,9 +214,6 @@ static void initcall_debug_report(struct device *dev, ktime_t calltime,
pr_info("call %s+ returned %d after %Ld usecs\n", dev_name(dev),
error, (unsigned long long)nsecs >> 10);
}
-
- trace_device_pm_report_time(dev, info, nsecs, pm_verb(state.event),
- error);
}
/**
@@ -387,7 +384,9 @@ static int dpm_run_callback(pm_callback_t cb, struct device *dev,
calltime = initcall_debug_start(dev);
pm_dev_dbg(dev, state, info);
+ trace_device_pm_callback_start(dev, info, state.event);
error = cb(dev);
+ trace_device_pm_callback_end(dev, error);
suspend_report_result(cb, error);
initcall_debug_report(dev, calltime, error, state, info);
@@ -545,6 +544,7 @@ static void dpm_resume_noirq(pm_message_t state)
struct device *dev;
ktime_t starttime = ktime_get();
+ trace_suspend_resume(TPS("dpm_resume_noirq"), state.event, true);
mutex_lock(&dpm_list_mtx);
pm_transition = state;
@@ -587,6 +587,7 @@ static void dpm_resume_noirq(pm_message_t state)
dpm_show_time(starttime, state, "noirq");
resume_device_irqs();
cpuidle_resume();
+ trace_suspend_resume(TPS("dpm_resume_noirq"), state.event, false);
}
/**
@@ -664,6 +665,7 @@ static void dpm_resume_early(pm_message_t state)
struct device *dev;
ktime_t starttime = ktime_get();
+ trace_suspend_resume(TPS("dpm_resume_early"), state.event, true);
mutex_lock(&dpm_list_mtx);
pm_transition = state;
@@ -703,6 +705,7 @@ static void dpm_resume_early(pm_message_t state)
mutex_unlock(&dpm_list_mtx);
async_synchronize_full();
dpm_show_time(starttime, state, "early");
+ trace_suspend_resume(TPS("dpm_resume_early"), state.event, false);
}
/**
@@ -834,6 +837,7 @@ void dpm_resume(pm_message_t state)
struct device *dev;
ktime_t starttime = ktime_get();
+ trace_suspend_resume(TPS("dpm_resume"), state.event, true);
might_sleep();
mutex_lock(&dpm_list_mtx);
@@ -875,6 +879,7 @@ void dpm_resume(pm_message_t state)
dpm_show_time(starttime, state, NULL);
cpufreq_resume();
+ trace_suspend_resume(TPS("dpm_resume"), state.event, false);
}
/**
@@ -913,7 +918,9 @@ static void device_complete(struct device *dev, pm_message_t state)
if (callback) {
pm_dev_dbg(dev, state, info);
+ trace_device_pm_callback_start(dev, info, state.event);
callback(dev);
+ trace_device_pm_callback_end(dev, 0);
}
device_unlock(dev);
@@ -932,6 +939,7 @@ void dpm_complete(pm_message_t state)
{
struct list_head list;
+ trace_suspend_resume(TPS("dpm_complete"), state.event, true);
might_sleep();
INIT_LIST_HEAD(&list);
@@ -951,6 +959,7 @@ void dpm_complete(pm_message_t state)
}
list_splice(&list, &dpm_list);
mutex_unlock(&dpm_list_mtx);
+ trace_suspend_resume(TPS("dpm_complete"), state.event, false);
}
/**
@@ -1086,6 +1095,7 @@ static int dpm_suspend_noirq(pm_message_t state)
ktime_t starttime = ktime_get();
int error = 0;
+ trace_suspend_resume(TPS("dpm_suspend_noirq"), state.event, true);
cpuidle_pause();
suspend_device_irqs();
mutex_lock(&dpm_list_mtx);
@@ -1126,6 +1136,7 @@ static int dpm_suspend_noirq(pm_message_t state)
} else {
dpm_show_time(starttime, state, "noirq");
}
+ trace_suspend_resume(TPS("dpm_suspend_noirq"), state.event, false);
return error;
}
@@ -1222,6 +1233,7 @@ static int dpm_suspend_late(pm_message_t state)
ktime_t starttime = ktime_get();
int error = 0;
+ trace_suspend_resume(TPS("dpm_suspend_late"), state.event, true);
mutex_lock(&dpm_list_mtx);
pm_transition = state;
async_error = 0;
@@ -1257,6 +1269,7 @@ static int dpm_suspend_late(pm_message_t state)
} else {
dpm_show_time(starttime, state, "late");
}
+ trace_suspend_resume(TPS("dpm_suspend_late"), state.event, false);
return error;
}
@@ -1295,7 +1308,9 @@ static int legacy_suspend(struct device *dev, pm_message_t state,
calltime = initcall_debug_start(dev);
+ trace_device_pm_callback_start(dev, info, state.event);
error = cb(dev, state);
+ trace_device_pm_callback_end(dev, error);
suspend_report_result(cb, error);
initcall_debug_report(dev, calltime, error, state, info);
@@ -1461,6 +1476,7 @@ int dpm_suspend(pm_message_t state)
ktime_t starttime = ktime_get();
int error = 0;
+ trace_suspend_resume(TPS("dpm_suspend"), state.event, true);
might_sleep();
cpufreq_suspend();
@@ -1498,6 +1514,7 @@ int dpm_suspend(pm_message_t state)
dpm_save_failed_step(SUSPEND_SUSPEND);
} else
dpm_show_time(starttime, state, NULL);
+ trace_suspend_resume(TPS("dpm_suspend"), state.event, false);
return error;
}
@@ -1549,8 +1566,11 @@ static int device_prepare(struct device *dev, pm_message_t state)
callback = dev->driver->pm->prepare;
}
- if (callback)
+ if (callback) {
+ trace_device_pm_callback_start(dev, info, state.event);
ret = callback(dev);
+ trace_device_pm_callback_end(dev, ret);
+ }
device_unlock(dev);
@@ -1582,6 +1602,7 @@ int dpm_prepare(pm_message_t state)
{
int error = 0;
+ trace_suspend_resume(TPS("dpm_prepare"), state.event, true);
might_sleep();
mutex_lock(&dpm_list_mtx);
@@ -1612,6 +1633,7 @@ int dpm_prepare(pm_message_t state)
put_device(dev);
}
mutex_unlock(&dpm_list_mtx);
+ trace_suspend_resume(TPS("dpm_prepare"), state.event, false);
return error;
}
diff --git a/drivers/base/syscore.c b/drivers/base/syscore.c
index e8d11b6630ee..dbb8350ea8dc 100644
--- a/drivers/base/syscore.c
+++ b/drivers/base/syscore.c
@@ -10,6 +10,7 @@
#include <linux/mutex.h>
#include <linux/module.h>
#include <linux/interrupt.h>
+#include <trace/events/power.h>
static LIST_HEAD(syscore_ops_list);
static DEFINE_MUTEX(syscore_ops_lock);
@@ -49,6 +50,7 @@ int syscore_suspend(void)
struct syscore_ops *ops;
int ret = 0;
+ trace_suspend_resume(TPS("syscore_suspend"), 0, true);
pr_debug("Checking wakeup interrupts\n");
/* Return error code if there are any wakeup interrupts pending. */
@@ -70,6 +72,7 @@ int syscore_suspend(void)
"Interrupts enabled after %pF\n", ops->suspend);
}
+ trace_suspend_resume(TPS("syscore_suspend"), 0, false);
return 0;
err_out:
@@ -92,6 +95,7 @@ void syscore_resume(void)
{
struct syscore_ops *ops;
+ trace_suspend_resume(TPS("syscore_resume"), 0, true);
WARN_ONCE(!irqs_disabled(),
"Interrupts enabled before system core resume.\n");
@@ -103,6 +107,7 @@ void syscore_resume(void)
WARN_ONCE(!irqs_disabled(),
"Interrupts enabled after %pF\n", ops->resume);
}
+ trace_suspend_resume(TPS("syscore_resume"), 0, false);
}
EXPORT_SYMBOL_GPL(syscore_resume);
#endif /* CONFIG_PM_SLEEP */