[RFC] Design + prototype: Multiple handler sets per probe address

[Hien Nguyen]

I did some test on the the multi handlers patch. It seems working as 
described. I created a function-return probes patch agaisnt Ananth's 
multi-handlers patch.  Apply Ananth's patch first then this patch.

I used the sys_retprobe.ko and sys_retprobe2.ko modules for some quick 
tests, they are basically idential with different name (so I can load 
both of them).  You could untar the tarballs and build the modules with 
the incluced mksys_kretprobe script.

Please let me know if there is any problem.

Thanks, Hien.


Ananth N Mavinakayanahalli wrote:

> Hi,
>
> Here is a design to support "Mulitple handler sets per address". I 
> have also put in the i386 implementation based on this design.
>
> Some notes:
>
> - The interfaces to register, unregister, define handlers all remain
> the same.
> - A kprobe and jprobe cannot co-exist at the same location. (Ideas are 
> welcome on how to support this).
>
> I have minimally tested the patch and it works(tm).
>
> Please let me know your thoughts on the design. I'd also appreciate if 
> you could test the patch (diffed against 2.6.12-rc1-mm3) and provide 
> feedback.
>
>
> Thanks,
> Ananth
>

-------------- next part --------------
A non-text attachment was scrubbed...
Name: multi-handlers-base-x86-working_retprobe.patch
Type: text/x-patch
Size: 14917 bytes
Desc: not available
URL: <http://sourceware.org/pipermail/systemtap/attachments/20050402/51a11c36/attachment.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: sys_kretprobe.tar.gz
Type: application/x-gzip
Size: 2795 bytes
Desc: not available
URL: <http://sourceware.org/pipermail/systemtap/attachments/20050402/51a11c36/attachment-0001.bin>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: sys_kretprobe2.tar.gz
Type: application/x-gzip
Size: 2804 bytes
Desc: not available
URL: <http://sourceware.org/pipermail/systemtap/attachments/20050402/51a11c36/attachment-0002.bin>