root/include/trace/events/workqueue.h

INCLUDED FROM

#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>

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)
);

/**
 * 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(unsigned 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)
                __field( void *,        workqueue)
                __field( unsigned int,  req_cpu )
                __field( unsigned int,  cpu     )
        ),

        TP_fast_assign(
                __entry->work           = work;
                __entry->function       = work->func;
                __entry->workqueue      = pwq->wq;
                __entry->req_cpu        = req_cpu;
                __entry->cpu            = pwq->pool->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_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.
 */
DEFINE_EVENT(workqueue_work, workqueue_activate_work,

        TP_PROTO(struct work_struct *work),

        TP_ARGS(work)
);

/**
 * 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    )
                __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_end - called immediately after the workqueue callback
 * @work:       pointer to struct work_struct
 *
 * Allows to track workqueue execution.
 */
DEFINE_EVENT(workqueue_work, workqueue_execute_end,

        TP_PROTO(struct work_struct *work),

        TP_ARGS(work)
);

#endif /*  _TRACE_WORKQUEUE_H */

/* This part must be outside protection */
#include <trace/define_trace.h>