[Bug kprobes/2152] jprobe variant to run handler instead of probed function

[suparna at in dot ibm dot com]

------- Additional Comments From suparna at in dot ibm dot com  2006-01-17 06:04 -------
Subject: Re:  jprobe variant to run handler instead of probed function

On Mon, Jan 16, 2006 at 05:26:29PM -0000, anil dot s dot keshavamurthy at intel dot com wrote:
> 
> ------- Additional Comments From anil dot s dot keshavamurthy at intel dot com  2006-01-16 17:26 -------
> > Probably just calling "return" instead of "jprobe_return" from the jprobe
> > handler would do the trick ? 
> You can't do that(at least in the current design) as jprobe_handler are 
> executed with preempt disabled and current_kprobe set to this probe. Hence 

True. Thanks for spotting that.

> jprobe_handler() _must_ execute jprobe_return(), so that Kprobe code can 
> reverse the preempt count and clear current_kprobe.
> 
> 
> 
> -- 
> 
> 
> http://sourceware.org/bugzilla/show_bug.cgi?id=2152
> 
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http://sourceware.org/bugzilla/show_bug.cgi?id=2152

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