diff options
Diffstat (limited to 'kernel/power')
| -rw-r--r-- | kernel/power/main.c | 2 | ||||
| -rw-r--r-- | kernel/power/qos.c | 14 | ||||
| -rw-r--r-- | kernel/power/snapshot.c | 5 | ||||
| -rw-r--r-- | kernel/power/suspend.c | 2 |
4 files changed, 17 insertions, 6 deletions
diff --git a/kernel/power/main.c b/kernel/power/main.c index d77663bfede..0828070d38b 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 587dddeebf1..06fe28589e9 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 0de28576807..7872a35eafe 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(®ion->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 bef86d121eb..ece04223bb1 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"); |