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| author |   Sahara <keun-o.park@windriver.com> | 2013-06-21 11:12:30 +0900 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-06-24 13:09:03 +0200 |
| commit | 96d9d0b5dc17e80cefbd7c5be15a5072d33513f8 (patch) | |
| tree | f057c7e2d5309457f46291d47acd571e946b77ef /drivers/base | |
| parent | PM / QoS: Add pm_qos_request tracepoints (diff) | |
| download | linux-dev-96d9d0b5dc17e80cefbd7c5be15a5072d33513f8.tar.xz linux-dev-96d9d0b5dc17e80cefbd7c5be15a5072d33513f8.zip | |
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')
| -rw-r--r-- | drivers/base/power/qos.c | 6 |
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; |