linux-kernel - Re: [PATCH v3] ftrace: add a tracepoint for __raise_softirq

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Date:	Thu, 14 May 2009 16:05:21 +0800
From:	Xiao Guangrong <xiaoguangrong@...fujitsu.com>
To:	Lai Jiangshan <laijs@...fujitsu.com>
CC:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	linux-kernel@...r.kernel.org, mingo@...e.hu, fweisbec@...il.com,
	rostedt@...dmis.org, zhaolei@...fujitsu.com,
	Li Zefan <lizf@...fujitsu.com>
Subject: Re: [PATCH v3] ftrace: add a tracepoint for	__raise_softirq_irqoff()



Lai Jiangshan wrote:
> Mathieu Desnoyers wrote:
>> * Lai Jiangshan (laijs@...fujitsu.com) wrote:
>>> Mathieu Desnoyers wrote:

>> #endif
>>
> 
> It's not needed for trace/events/irq.h
> 
> Yes, it's a solution.
> 
> But I don't think we have to do this, CREATE_TRACE_POINTS is
> needed only _once_ for every <trace/events/xxxx.h>
> 
> The .c file which defines CREATE_TRACE_POINTS can provide
> (had provided likely) things like "#include <linux/interrupt.h>"
> 
> See kernel/softirq.c:
> #include <linux/interrupt.h>
> ......
> ......
> #define CREATE_TRACE_POINTS
> #include <trace/events/irq.h>
> 
> I don't think it's a problem, CREATE_TRACE_POINTS is defined only
> once for a <trace/events/xxxx.h>.
> 

Yes, I think Lai's argument is reasonable,
the .c file which use ftrace already include the relevant head file. 
I will make a patch as your suggestions. 

Thanks! ;-)

> Lai.
> 
> 
> 
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