Re: systemtap-1.0.0 runtime failure on ARM - simple stap script translation fails

[Indraneel Mukherjee <indro.ml@gmail.com>]

Hi Eugeniy,

On Mon, Dec 14, 2009 at 4:30 PM, Eugeniy Meshcheryakov <eugen@debian.org> wrote:
> Yes, I know about that problem. But I'm not sure whether proposed patch
> fixes anything. Were you able to _use_ modules made with that patch applied?

Yes, i was able to _use_ SystemTap on ARM after applying that patch +
your fix. I ran the following script and it worked absolutely fine:

global reads
probe kernel.function("do_writepages") {
        reads[execname()]++
        }
probe timer.s(3)
{
        foreach (count in reads)
                printf("%s : %d \n", count, reads[count])
}

OUTPUT of script:
pdflush : 4
pdflush : 4
pdflush : 8
pdflush : 8
pdflush : 12
pdflush : 12
pdflush : 12
...
...
> Or does it fixes only compilation? My guess is that module
> initialization will fail because build-id does not match.

No it does not fail.

Regards,
Indro

>
> 14 грудня 2009 о 16:11 +0530 Indraneel Mukherjee написав(-ла):
>> Thanks for the fix. Also, there was another patch that i had to apply
>> to get Systemtap working for ARM. I checked the latest git and the fix
>> is not available for ARM. The fix is here:
>> http://sources.redhat.com/ml/systemtap/2009-q4/msg00574.html
>> Without the above fix, the ARM(arm-linux is non-relocatable) stap FAILS.
>>
>> This is related to
>> http://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg690166.html
>>
>> Shouldn't this fix be added to the Systemtap tree to get it right for ARM?
>
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