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tracing: Add missing forward declaration

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Without this forward declaration compile may fail if this header is
included only for registering other probe event without struct
pool_workqueue.

Link: http://lkml.kernel.org/r/20180416023626.139915-1-cwahbong@google.com

Reviewed-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Ahbong Chang <cwahbong@google.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Ahbong Chang 2018-04-16 10:36:25 +08:00 committed by Steven Rostedt (VMware)
parent 60cc43fc88
commit 1cdae042fc
1 changed files with 2 additions and 0 deletions
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2
include/trace/events/workqueue.h
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@ -25,6 +25,8 @@ DECLARE_EVENT_CLASS(workqueue_work,
TP_printk("work struct %p", __entry->work)
);
struct pool_workqueue;
/**
* workqueue_queue_work - called when a work gets queued
* @req_cpu: the requested cpu