instrumentation/events/mainline/workqueue.h

   1 #undef TRACE_SYSTEM
   2 #define TRACE_SYSTEM workqueue
   3
   4 #if !defined(_TRACE_WORKQUEUE_H) || defined(TRACE_HEADER_MULTI_READ)
   5 #define _TRACE_WORKQUEUE_H
   6
   7 #include <linux/tracepoint.h>
   8 #include <linux/workqueue.h>
   9
  10 DECLARE_EVENT_CLASS(workqueue_work,
  11
  12         TP_PROTO(struct work_struct *work),
  13
  14         TP_ARGS(work),
  15
  16         TP_STRUCT__entry(
  17                 __field( void *,        work    )
  18         ),
  19
  20         TP_fast_assign(
  21                 __entry->work           = work;
  22         ),
  23
  24         TP_printk("work struct %p", __entry->work)
  25 );
  26
  27 /**
  28  * workqueue_queue_work - called when a work gets queued
  29  * @req_cpu:    the requested cpu
  30  * @cwq:        pointer to struct cpu_workqueue_struct
  31  * @work:       pointer to struct work_struct
  32  *
  33  * This event occurs when a work is queued immediately or once a
  34  * delayed work is actually queued on a workqueue (ie: once the delay
  35  * has been reached).
  36  */
  37 TRACE_EVENT(workqueue_queue_work,
  38
  39         TP_PROTO(unsigned int req_cpu, struct cpu_workqueue_struct *cwq,
  40                  struct work_struct *work),
  41
  42         TP_ARGS(req_cpu, cwq, work),
  43
  44         TP_STRUCT__entry(
  45                 __field( void *,        work    )
  46                 __field( void *,        function)
  47                 __field( void *,        workqueue)
  48                 __field( unsigned int,  req_cpu )
  49                 __field( unsigned int,  cpu     )
  50         ),
  51
  52         TP_fast_assign(
  53                 __entry->work           = work;
  54                 __entry->function       = work->func;
  55                 __entry->workqueue      = cwq->wq;
  56                 __entry->req_cpu        = req_cpu;
  57                 __entry->cpu            = cwq->pool->gcwq->cpu;
  58         ),
  59
  60         TP_printk("work struct=%p function=%pf workqueue=%p req_cpu=%u cpu=%u",
  61                   __entry->work, __entry->function, __entry->workqueue,
  62                   __entry->req_cpu, __entry->cpu)
  63 );
  64
  65 /**
  66  * workqueue_activate_work - called when a work gets activated
  67  * @work:       pointer to struct work_struct
  68  *
  69  * This event occurs when a queued work is put on the active queue,
  70  * which happens immediately after queueing unless @max_active limit
  71  * is reached.
  72  */
  73 DEFINE_EVENT(workqueue_work, workqueue_activate_work,
  74
  75         TP_PROTO(struct work_struct *work),
  76
  77         TP_ARGS(work)
  78 );
  79
  80 /**
  81  * workqueue_execute_start - called immediately before the workqueue callback
  82  * @work:       pointer to struct work_struct
  83  *
  84  * Allows to track workqueue execution.
  85  */
  86 TRACE_EVENT(workqueue_execute_start,
  87
  88         TP_PROTO(struct work_struct *work),
  89
  90         TP_ARGS(work),
  91
  92         TP_STRUCT__entry(
  93                 __field( void *,        work    )
  94                 __field( void *,        function)
  95         ),
  96
  97         TP_fast_assign(
  98                 __entry->work           = work;
  99                 __entry->function       = work->func;
 100         ),
 101
 102         TP_printk("work struct %p: function %pf", __entry->work, __entry->function)
 103 );
 104
 105 /**
 106  * workqueue_execute_end - called immediately after the workqueue callback
 107  * @work:       pointer to struct work_struct
 108  *
 109  * Allows to track workqueue execution.
 110  */
 111 DEFINE_EVENT(workqueue_work, workqueue_execute_end,
 112
 113         TP_PROTO(struct work_struct *work),
 114
 115         TP_ARGS(work)
 116 );
 117
 118 #endif /*  _TRACE_WORKQUEUE_H */
 119
 120 /* This part must be outside protection */
 121 #include <trace/define_trace.h>