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Merge branch 'for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

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Pull workqueue updates from Tejun Heo:
 "Just a couple tracepoint patches"

* 'for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: remove workqueue_work event class
  workqueue: add worker function to workqueue_execute_end tracepoint
This commit is contained in:
Linus Torvalds 2020-01-27 15:16:52 -08:00
commit 16d06120d7
2 changed files with 29 additions and 23 deletions
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50
include/trace/events/workqueue.h
View File

@ -8,23 +8,6 @@
#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)
);
struct pool_workqueue;
/**
@ -73,11 +56,21 @@ TRACE_EVENT(workqueue_queue_work,
* which happens immediately after queueing unless @max_active limit
* is reached.
*/
DEFINE_EVENT(workqueue_work, workqueue_activate_work,
TRACE_EVENT(workqueue_activate_work,
TP_PROTO(struct work_struct *work),
TP_ARGS(work)
TP_ARGS(work),
TP_STRUCT__entry(
__field( void *, work )
),
TP_fast_assign(
__entry->work = work;
),
TP_printk("work struct %p", __entry->work)
);
/**
@ -108,14 +101,27 @@ TRACE_EVENT(workqueue_execute_start,
/**
* workqueue_execute_end - called immediately after the workqueue callback
* @work: pointer to struct work_struct
* @function: pointer to worker function
*
* Allows to track workqueue execution.
*/
DEFINE_EVENT(workqueue_work, workqueue_execute_end,
TRACE_EVENT(workqueue_execute_end,
TP_PROTO(struct work_struct *work),
TP_PROTO(struct work_struct *work, work_func_t function),
TP_ARGS(work)
TP_ARGS(work, function),
TP_STRUCT__entry(
__field( void *, work )
__field( void *, function)
),
TP_fast_assign(
__entry->work = work;
__entry->function = function;
),
TP_printk("work struct %p: function %ps", __entry->work, __entry->function)
);
#endif /* _TRACE_WORKQUEUE_H */

2
kernel/workqueue.c
View File

@ -2266,7 +2266,7 @@ __acquires(&pool->lock)
* While we must be careful to not use "work" after this, the trace
* point will only record its address.
*/
trace_workqueue_execute_end(work);
trace_workqueue_execute_end(work, worker->current_func);
lock_map_release(&lockdep_map);
lock_map_release(&pwq->wq->lockdep_map);