Merge branch 'pm-sleep'

* pm-sleep:
  PM / sleep: trace events for device PM callbacks
  PM / sleep: trace events for suspend/resume

2 files changed, 31 insertions, 4 deletions

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 */