diff options
Diffstat (limited to 'kernel/power/qos.c')
| -rw-r--r-- | kernel/power/qos.c | 14 |
1 files changed, 11 insertions, 3 deletions
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", |