workqueue.h File Reference

#include <linux/tracepoint.h>
#include <linux/workqueue.h>
#include <trace/define_trace.h>

Go to the source code of this file.

Macros
#define	TRACE_SYSTEM   workqueue
#define	_TRACE_WORKQUEUE_H

Functions
	DECLARE_EVENT_CLASS (workqueue_work, TP_PROTO(struct work_struct *work), TP_ARGS(work), TP_STRUCT__entry(__field(void *, work)), TP_fast_assign(__entry->work=work;), TP_printk("work struct %p", __entry->work))
	TRACE_EVENT (workqueue_queue_work, TP_PROTO(unsigned int req_cpu, struct cpu_workqueue_struct *cwq, struct work_struct *work), TP_ARGS(req_cpu, cwq, work), TP_STRUCT__entry(__field(void *, work) __field(void *, function) __field(void *, workqueue) __field(unsigned int, req_cpu) __field(unsigned int, cpu)), TP_fast_assign(__entry->work=work;__entry->function=work->func;__entry->workqueue=cwq->wq;__entry->req_cpu=req_cpu;__entry->cpu=cwq->pool->gcwq->cpu;), TP_printk("work struct=%p function=%pf workqueue=%p req_cpu=%u cpu=%u", __entry->work, __entry->function, __entry->workqueue, __entry->req_cpu, __entry->cpu))
	DEFINE_EVENT (workqueue_work, workqueue_activate_work, TP_PROTO(struct work_struct *work),)
	TRACE_EVENT (workqueue_execute_start, TP_PROTO(struct work_struct *work), TP_ARGS(work), TP_STRUCT__entry(__field(void *, work) __field(void *, function)), TP_fast_assign(__entry->work=work;__entry->function=work->func;), TP_printk("work struct %p: function %pf", __entry->work, __entry->function))
	DEFINE_EVENT (workqueue_work, workqueue_execute_end, TP_PROTO(struct work_struct *work),)

Macro Definition Documentation

#define _TRACE_WORKQUEUE_H

Definition at line 5 of file workqueue.h.

#define TRACE_SYSTEM   workqueue

Definition at line 2 of file workqueue.h.

Function Documentation

DECLARE_EVENT_CLASS	(	workqueue_work	,
		TP_PROTO(struct work_struct *work)	,
		TP_ARGS(work)	,
		TP_STRUCT__entry(__field(void *, work))	,
		TP_fast_assign(__entry->work=work;)	,
		TP_printk("work struct %p", __entry->work)
	)

DEFINE_EVENT	(	workqueue_work	,
		workqueue_activate_work	,
		TP_PROTO(struct work_struct *work)
	)

workqueue_activate_work - called when a work gets activated : pointer to struct work_struct

This event occurs when a queued work is put on the active queue, which happens immediately after queueing unless limit is reached.

DEFINE_EVENT	(	workqueue_work	,
		workqueue_execute_end	,
		TP_PROTO(struct work_struct *work)
	)

workqueue_execute_end - called immediately after the workqueue callback : pointer to struct work_struct

Allows to track workqueue execution.

TRACE_EVENT	(	workqueue_queue_work	,
		TP_PROTO(unsigned int req_cpu, struct cpu_workqueue_struct *cwq, struct work_struct *work)	,
		TP_ARGS(req_cpu, cwq, work)	,
		TP_STRUCT__entry(__field(void *, work) __field(void *, function) __field(void *, workqueue) __field(unsigned int, req_cpu) __field(unsigned int, cpu))	,
		TP_fast_assign(__entry->work=work;__entry->function=work->func;__entry->workqueue=cwq->wq;__entry->req_cpu=req_cpu;__entry->cpu=cwq->pool->gcwq->cpu;)	,
		TP_printk("work struct=%p function=%pf workqueue=%p req_cpu=%u cpu=%u", __entry->work, __entry->function, __entry->workqueue, __entry->req_cpu, __entry->cpu)
	)

workqueue_queue_work - called when a work gets queued : the requested cpu : pointer to struct cpu_workqueue_struct : pointer to struct work_struct

This event occurs when a work is queued immediately or once a delayed work is actually queued on a workqueue (ie: once the delay has been reached).

TRACE_EVENT	(	workqueue_execute_start	,
		TP_PROTO(struct work_struct *work)	,
		TP_ARGS(work)	,
		TP_STRUCT__entry(__field(void *, work) __field(void *, function))	,
		TP_fast_assign(__entry->work=work;__entry->function=work->func;)	,
		TP_printk("work struct %p: function %pf", __entry->work, __entry->function)
	)

workqueue_execute_start - called immediately before the workqueue callback : pointer to struct work_struct

Allows to track workqueue execution.