include/trace/events/workqueue.h

Source file repositories/reference/linux-study-clean/include/trace/events/workqueue.h

File Facts

System
Linux kernel
Corpus path
include/trace/events/workqueue.h
Extension
.h
Size
3051 bytes
Lines
133
Domain
Repository Root And Misc
Bucket
include
Inferred role
Repository Root And Misc: implementation source
Status
source implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

Dependency Surface

Detected Declarations

Annotated Snippet

#undef TRACE_SYSTEM
#define TRACE_SYSTEM workqueue

#if !defined(_TRACE_WORKQUEUE_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_WORKQUEUE_H

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

struct pool_workqueue;

/**
 * workqueue_queue_work - called when a work gets queued
 * @req_cpu:	the requested cpu
 * @pwq:	pointer to struct pool_workqueue
 * @work:	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_queue_work,

	TP_PROTO(int req_cpu, struct pool_workqueue *pwq,
		 struct work_struct *work),

	TP_ARGS(req_cpu, pwq, work),

	TP_STRUCT__entry(
		__field( void *,	work	)
		__field( void *,	function)
		__string( workqueue,	pwq->wq->name)
		__field( int,	req_cpu	)
		__field( int,	cpu	)
	),

	TP_fast_assign(
		__entry->work		= work;
		__entry->function	= work->func;
		__assign_str(workqueue);
		__entry->req_cpu	= req_cpu;
		__entry->cpu		= pwq->pool->cpu;
	),

	TP_printk("work struct=%p function=%ps workqueue=%s req_cpu=%d cpu=%d",
		  __entry->work, __entry->function, __get_str(workqueue),
		  __entry->req_cpu, __entry->cpu)
);

/**
 * workqueue_activate_work - called when a work gets activated
 * @work:	pointer to struct work_struct
 *
 * This event occurs when a queued work is put on the active queue,
 * which happens immediately after queueing unless @max_active limit
 * is reached.
 */
TRACE_EVENT(workqueue_activate_work,

	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=%ps ", __entry->work, __entry->function)
);

/**
 * workqueue_execute_start - called immediately before the workqueue callback
 * @work:	pointer to struct work_struct
 *
 * Allows to track workqueue execution.
 */
TRACE_EVENT(workqueue_execute_start,

	TP_PROTO(struct work_struct *work),

	TP_ARGS(work),

	TP_STRUCT__entry(
		__field( void *,	work	)

Annotation

Implementation Notes