GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

workqueue: add queue_work and activate_work trace points

Browse source 
These two tracepoints allow tracking when and how a work is queued and
activated.  This patch is based on Frederic's patch to add queue_work
trace point.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
This commit is contained in:
Tejun Heo 2010-10-05 10:49:55 +02:00
parent 97bd234701
commit cdadf0097c
2 changed files with 56 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

53
include/trace/events/workqueue.h
View file

@ -24,6 +24,59 @@ DECLARE_EVENT_CLASS(workqueue_work,
TP_printk("work struct %p", __entry->work)
);
/**
* workqueue_queue_work - called when a work gets queued
* @req_cpu: the requested cpu
* @cwq: pointer to struct cpu_workqueue_struct
* @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 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->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_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