[PATCH] workqueue: add function in event of workqueue_activate_work

[Kassey Li]

The trace event "workqueue_activate_work" only print work struct.
However, function is the region of interest in a full sequence of work.
Current workqueue_activate_work trace event output:

    workqueue_activate_work: work struct ffffff88b4a0f450

With this change, workqueue_activate_work will print the function name,
align with workqueue_queue_work/execute_start/execute_end event.

checkpatch.pl will report below error for the space:

        ERROR: space prohibited after that open parenthesis '('
        #28: FILE: include/trace/events/workqueue.h:67:
        +               __field( void *,        function)

        total: 1 errors, 0 warnings, 16 lines checked

fix this error.

Signed-off-by: Kassey Li <quic_yinga...@quicinc.com>
---
 include/trace/events/workqueue.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/trace/events/workqueue.h b/include/trace/events/workqueue.h
index 262d52021c23..a42c1a293459 100644
--- a/include/trace/events/workqueue.h
+++ b/include/trace/events/workqueue.h
@@ -63,14 +63,16 @@ TRACE_EVENT(workqueue_activate_work,
        TP_ARGS(work),
 
        TP_STRUCT__entry(
-               __field( void *,        work    )
+               __field(void *, work)
+               __field(void *, function)
        ),
 
        TP_fast_assign(
                __entry->work           = work;
+               __entry->function       = work->func;
        ),
 
-       TP_printk("work struct %p", __entry->work)
+       TP_printk("work struct %p function=%ps ", __entry->work, 
__entry->function)
 );
 
 /**
-- 
2.25.1