Merge branch 'pm-assorted'

* pm-assorted:
  PM / QoS: Add pm_qos and dev_pm_qos to events-power.txt
  PM / QoS: Add dev_pm_qos_request tracepoints
  PM / QoS: Add pm_qos_request tracepoints
  PM / QoS: Add pm_qos_update_target/flags tracepoints
  PM / QoS: Update Documentation/power/pm_qos_interface.txt
  PM / Sleep: Print last wakeup source on failed wakeup_count write
  PM / QoS: correct the valid range of pm_qos_class
  PM / wakeup: Adjust messaging for wake events during suspend
  PM / Runtime: Update .runtime_idle() callback documentation
  PM / Runtime: Rework the "runtime idle" helper routine
  PM / Hibernate: print physical addresses consistently with other parts of kernel

4 files changed, 17 insertions, 6 deletions

diff --git a/kernel/power/main.c b/kernel/power/main.c
index d77663bfedeb..0828070d38b4 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -424,6 +424,8 @@ static ssize_t wakeup_count_store(struct kobject *kobj,
         if (sscanf(buf, "%u", &val) == 1) {
                 if (pm_save_wakeup_count(val))
                         error = n;
+                else
+                        pm_print_active_wakeup_sources();
         }
 
  out:
diff --git a/kernel/power/qos.c b/kernel/power/qos.c
index 587dddeebf15..06fe28589e9c 100644
--- a/kernel/power/qos.c
+++ b/kernel/power/qos.c
@@ -44,6 +44,7 @@
 
 #include <linux/uaccess.h>
 #include <linux/export.h>
+#include <trace/events/power.h>
 
 /*
  * locking rule: all changes to constraints or notifiers lists
@@ -202,6 +203,7 @@ int pm_qos_update_target(struct pm_qos_constraints *c, struct plist_node *node,
 
         spin_unlock_irqrestore(&pm_qos_lock, flags);
 
+        trace_pm_qos_update_target(action, prev_value, curr_value);
         if (prev_value != curr_value) {
                 blocking_notifier_call_chain(c->notifiers,
                                              (unsigned long)curr_value,
@@ -272,6 +274,7 @@ bool pm_qos_update_flags(struct pm_qos_flags *pqf,
 
         spin_unlock_irqrestore(&pm_qos_lock, irqflags);
 
+        trace_pm_qos_update_flags(action, prev_value, curr_value);
         return prev_value != curr_value;
 }
 
@@ -333,6 +336,7 @@ void pm_qos_add_request(struct pm_qos_request *req,
         }
         req->pm_qos_class = pm_qos_class;
         INIT_DELAYED_WORK(&req->work, pm_qos_work_fn);
+        trace_pm_qos_add_request(pm_qos_class, value);
         pm_qos_update_target(pm_qos_array[pm_qos_class]->constraints,
                              &req->node, PM_QOS_ADD_REQ, value);
 }
@@ -361,6 +365,7 @@ void pm_qos_update_request(struct pm_qos_request *req,
 
         cancel_delayed_work_sync(&req->work);
 
+        trace_pm_qos_update_request(req->pm_qos_class, new_value);
         if (new_value != req->node.prio)
                 pm_qos_update_target(
                         pm_qos_array[req->pm_qos_class]->constraints,
@@ -387,6 +392,8 @@ void pm_qos_update_request_timeout(struct pm_qos_request *req, s32 new_value,
 
         cancel_delayed_work_sync(&req->work);
 
+        trace_pm_qos_update_request_timeout(req->pm_qos_class,
+                                            new_value, timeout_us);
         if (new_value != req->node.prio)
                 pm_qos_update_target(
                         pm_qos_array[req->pm_qos_class]->constraints,
@@ -416,6 +423,7 @@ void pm_qos_remove_request(struct pm_qos_request *req)
 
         cancel_delayed_work_sync(&req->work);
 
+        trace_pm_qos_remove_request(req->pm_qos_class, PM_QOS_DEFAULT_VALUE);
         pm_qos_update_target(pm_qos_array[req->pm_qos_class]->constraints,
                              &req->node, PM_QOS_REMOVE_REQ,
                              PM_QOS_DEFAULT_VALUE);
@@ -477,7 +485,7 @@ static int find_pm_qos_object_by_minor(int minor)
 {
         int pm_qos_class;
 
-        for (pm_qos_class = 0;
+        for (pm_qos_class = PM_QOS_CPU_DMA_LATENCY;
                 pm_qos_class < PM_QOS_NUM_CLASSES; pm_qos_class++) {
                 if (minor ==
                         pm_qos_array[pm_qos_class]->pm_qos_power_miscdev.minor)
@@ -491,7 +499,7 @@ static int pm_qos_power_open(struct inode *inode, struct file *filp)
         long pm_qos_class;
 
         pm_qos_class = find_pm_qos_object_by_minor(iminor(inode));
-        if (pm_qos_class >= 0) {
+        if (pm_qos_class >= PM_QOS_CPU_DMA_LATENCY) {
                 struct pm_qos_request *req = kzalloc(sizeof(*req), GFP_KERNEL);
                 if (!req)
                         return -ENOMEM;
@@ -584,7 +592,7 @@ static int __init pm_qos_power_init(void)
 
         BUILD_BUG_ON(ARRAY_SIZE(pm_qos_array) != PM_QOS_NUM_CLASSES);
 
-        for (i = 1; i < PM_QOS_NUM_CLASSES; i++) {
+        for (i = PM_QOS_CPU_DMA_LATENCY; i < PM_QOS_NUM_CLASSES; i++) {
                 ret = register_pm_qos_misc(pm_qos_array[i]);
                 if (ret < 0) {
                         printk(KERN_ERR "pm_qos_param: %s setup failed\n",
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 0de28576807d..7872a35eafe7 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -642,8 +642,9 @@ __register_nosave_region(unsigned long start_pfn, unsigned long end_pfn,
         region->end_pfn = end_pfn;
         list_add_tail(&region->list, &nosave_regions);
  Report:
-        printk(KERN_INFO "PM: Registered nosave memory: %016lx - %016lx\n",
-                start_pfn << PAGE_SHIFT, end_pfn << PAGE_SHIFT);
+        printk(KERN_INFO "PM: Registered nosave memory: [mem %#010llx-%#010llx]\n",
+                (unsigned long long) start_pfn << PAGE_SHIFT,
+                ((unsigned long long) end_pfn << PAGE_SHIFT) - 1);
 }
 
 /*
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index bef86d121eb2..ece04223bb1e 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -269,7 +269,7 @@ int suspend_devices_and_enter(suspend_state_t state)
         suspend_test_start();
         error = dpm_suspend_start(PMSG_SUSPEND);
         if (error) {
-                printk(KERN_ERR "PM: Some devices failed to suspend\n");
+                pr_err("PM: Some devices failed to suspend, or early wake event detected\n");
                 goto Recover_platform;
         }
         suspend_test_finish("suspend devices");