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>
This commit is contained in:
parent
ae8822b842
commit
96d9d0b5dc
|
@ -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;
|
||||
|
|
|
@ -299,6 +299,57 @@ DEFINE_EVENT_PRINT(pm_qos_update, pm_qos_update_flags,
|
|||
{ PM_QOS_REMOVE_REQ, "REMOVE_REQ" }),
|
||||
__entry->prev_value, __entry->curr_value)
|
||||
);
|
||||
|
||||
DECLARE_EVENT_CLASS(dev_pm_qos_request,
|
||||
|
||||
TP_PROTO(const char *name, enum dev_pm_qos_req_type type,
|
||||
s32 new_value),
|
||||
|
||||
TP_ARGS(name, type, new_value),
|
||||
|
||||
TP_STRUCT__entry(
|
||||
__string( name, name )
|
||||
__field( enum dev_pm_qos_req_type, type )
|
||||
__field( s32, new_value )
|
||||
),
|
||||
|
||||
TP_fast_assign(
|
||||
__assign_str(name, name);
|
||||
__entry->type = type;
|
||||
__entry->new_value = new_value;
|
||||
),
|
||||
|
||||
TP_printk("device=%s type=%s new_value=%d",
|
||||
__get_str(name),
|
||||
__print_symbolic(__entry->type,
|
||||
{ DEV_PM_QOS_LATENCY, "DEV_PM_QOS_LATENCY" },
|
||||
{ DEV_PM_QOS_FLAGS, "DEV_PM_QOS_FLAGS" }),
|
||||
__entry->new_value)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(dev_pm_qos_request, dev_pm_qos_add_request,
|
||||
|
||||
TP_PROTO(const char *name, enum dev_pm_qos_req_type type,
|
||||
s32 new_value),
|
||||
|
||||
TP_ARGS(name, type, new_value)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(dev_pm_qos_request, dev_pm_qos_update_request,
|
||||
|
||||
TP_PROTO(const char *name, enum dev_pm_qos_req_type type,
|
||||
s32 new_value),
|
||||
|
||||
TP_ARGS(name, type, new_value)
|
||||
);
|
||||
|
||||
DEFINE_EVENT(dev_pm_qos_request, dev_pm_qos_remove_request,
|
||||
|
||||
TP_PROTO(const char *name, enum dev_pm_qos_req_type type,
|
||||
s32 new_value),
|
||||
|
||||
TP_ARGS(name, type, new_value)
|
||||
);
|
||||
#endif /* _TRACE_POWER_H */
|
||||
|
||||
/* This part must be outside protection */
|
||||
|
|
Loading…
Reference in a new issue