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To: voyager1983 <wang.yongzhi2009@gmail.com>
Cc: systemtap@sourceware.org
Subject: Re: Can kernel.statement access the function argument?
References: <31348406.post@talk.nabble.com> <4D9F2EE3.3020505@redhat.com>	<31356706.post@talk.nabble.com>
From: fche@redhat.com (Frank Ch. Eigler)
Date: Mon, 11 Apr 2011 17:40:00 -0000
In-Reply-To: <31356706.post@talk.nabble.com> (wang.yongzhi2009@gmail.com's message of "Fri, 8 Apr 2011 17:37:34 -0700 (PDT)")
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voyager1983 <wang.yongzhi2009@gmail.com> writes:

> What I am about to probe is actually the statement   
> ret = action->handler(irq, action->dev_id);
> [...]
> stap -L 'kernel.statement("handle_IRQ_event@kernel/irq/handle.c:376")'
> It returns nothing.

That's partly because the handle_IRQ_event function is blacklisted due
to some historical incompatibility with kernel kprobes.  You may try
again with stap -g ...

- FChE