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authorSahara <keun-o.park@windriver.com>2013-06-21 11:12:30 +0900
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-06-24 13:09:03 +0200
commit96d9d0b5dc17e80cefbd7c5be15a5072d33513f8 (patch)
treef057c7e2d5309457f46291d47acd571e946b77ef /drivers/base/power
parentae8822b842e229fa4459fca2d979b630d812311d (diff)
PM / QoS: Add dev_pm_qos_request tracepoints
Adds tracepoints to dev_pm_qos_add_request, dev_pm_qos_update_request, and dev_pm_qos_remove_request. It's useful for checking device name, dev_pm_qos_request_type, and value. Signed-off-by: Sahara <keun-o.park@windriver.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/base/power')
-rw-r--r--drivers/base/power/qos.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c
index 71671c42ef45..5c1361a9e5dd 100644
--- a/drivers/base/power/qos.c
+++ b/drivers/base/power/qos.c
@@ -42,6 +42,7 @@
#include <linux/export.h>
#include <linux/pm_runtime.h>
#include <linux/err.h>
+#include <trace/events/power.h>
#include "power.h"
@@ -305,6 +306,7 @@ int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req,
else if (!dev->power.qos)
ret = dev_pm_qos_constraints_allocate(dev);
+ trace_dev_pm_qos_add_request(dev_name(dev), type, value);
if (!ret) {
req->dev = dev;
req->type = type;
@@ -349,6 +351,8 @@ static int __dev_pm_qos_update_request(struct dev_pm_qos_request *req,
return -EINVAL;
}
+ trace_dev_pm_qos_update_request(dev_name(req->dev), req->type,
+ new_value);
if (curr_value != new_value)
ret = apply_constraint(req, PM_QOS_UPDATE_REQ, new_value);
@@ -398,6 +402,8 @@ static int __dev_pm_qos_remove_request(struct dev_pm_qos_request *req)
if (IS_ERR_OR_NULL(req->dev->power.qos))
return -ENODEV;
+ trace_dev_pm_qos_remove_request(dev_name(req->dev), req->type,
+ PM_QOS_DEFAULT_VALUE);
ret = apply_constraint(req, PM_QOS_REMOVE_REQ, PM_QOS_DEFAULT_VALUE);
memset(req, 0, sizeof(*req));
return ret;