mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 11:19:37 +00:00
![Michał Mirosław](/assets/img/avatar_default.png)
Add tracepoints to remaining places where device's power.usage_count is changed. This helps debugging where and why autosuspend is prevented. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
107 lines
2.4 KiB
C
107 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
|
|
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM rpm
|
|
|
|
#if !defined(_TRACE_RUNTIME_POWER_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define _TRACE_RUNTIME_POWER_H
|
|
|
|
#include <linux/ktime.h>
|
|
#include <linux/tracepoint.h>
|
|
|
|
struct device;
|
|
|
|
/*
|
|
* The rpm_internal events are used for tracing some important
|
|
* runtime pm internal functions.
|
|
*/
|
|
DECLARE_EVENT_CLASS(rpm_internal,
|
|
|
|
TP_PROTO(struct device *dev, int flags),
|
|
|
|
TP_ARGS(dev, flags),
|
|
|
|
TP_STRUCT__entry(
|
|
__string( name, dev_name(dev) )
|
|
__field( int, flags )
|
|
__field( int , usage_count )
|
|
__field( int , disable_depth )
|
|
__field( int , runtime_auto )
|
|
__field( int , request_pending )
|
|
__field( int , irq_safe )
|
|
__field( int , child_count )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__assign_str(name, dev_name(dev));
|
|
__entry->flags = flags;
|
|
__entry->usage_count = atomic_read(
|
|
&dev->power.usage_count);
|
|
__entry->disable_depth = dev->power.disable_depth;
|
|
__entry->runtime_auto = dev->power.runtime_auto;
|
|
__entry->request_pending = dev->power.request_pending;
|
|
__entry->irq_safe = dev->power.irq_safe;
|
|
__entry->child_count = atomic_read(
|
|
&dev->power.child_count);
|
|
),
|
|
|
|
TP_printk("%s flags-%x cnt-%-2d dep-%-2d auto-%-1d p-%-1d"
|
|
" irq-%-1d child-%d",
|
|
__get_str(name), __entry->flags,
|
|
__entry->usage_count,
|
|
__entry->disable_depth,
|
|
__entry->runtime_auto,
|
|
__entry->request_pending,
|
|
__entry->irq_safe,
|
|
__entry->child_count
|
|
)
|
|
);
|
|
DEFINE_EVENT(rpm_internal, rpm_suspend,
|
|
|
|
TP_PROTO(struct device *dev, int flags),
|
|
|
|
TP_ARGS(dev, flags)
|
|
);
|
|
DEFINE_EVENT(rpm_internal, rpm_resume,
|
|
|
|
TP_PROTO(struct device *dev, int flags),
|
|
|
|
TP_ARGS(dev, flags)
|
|
);
|
|
DEFINE_EVENT(rpm_internal, rpm_idle,
|
|
|
|
TP_PROTO(struct device *dev, int flags),
|
|
|
|
TP_ARGS(dev, flags)
|
|
);
|
|
DEFINE_EVENT(rpm_internal, rpm_usage,
|
|
|
|
TP_PROTO(struct device *dev, int flags),
|
|
|
|
TP_ARGS(dev, flags)
|
|
);
|
|
|
|
TRACE_EVENT(rpm_return_int,
|
|
TP_PROTO(struct device *dev, unsigned long ip, int ret),
|
|
TP_ARGS(dev, ip, ret),
|
|
|
|
TP_STRUCT__entry(
|
|
__string( name, dev_name(dev))
|
|
__field( unsigned long, ip )
|
|
__field( int, ret )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__assign_str(name, dev_name(dev));
|
|
__entry->ip = ip;
|
|
__entry->ret = ret;
|
|
),
|
|
|
|
TP_printk("%pS:%s ret=%d", (void *)__entry->ip, __get_str(name),
|
|
__entry->ret)
|
|
);
|
|
|
|
#endif /* _TRACE_RUNTIME_POWER_H */
|
|
|
|
/* This part must be outside protection */
|
|
#include <trace/define_trace.h>
|