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Re: Prelinking on ARM with Debug Link
- From: Torsten Polle <Torsten dot Polle at gmx dot de>
- To: David Smith <dsmith at redhat dot com>
- Cc: Mark Wielaard <mjw at redhat dot com>, systemtap at sourceware dot org
- Date: Thu, 10 Dec 2015 20:45:06 +0100
- Subject: Re: Prelinking on ARM with Debug Link
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David Smith writes:
> On 12/01/2015 02:10 PM, Torsten Polle wrote:
>> Hi David,
>>
>> David Smith writes:
>> > I don't believe we've ever supported an arm/arm64 kernel less than 3.7,
>>
>> I'm using SystemTap successfully with a 2.6.34 kernel on ARM since 4
>> years now. So far it worked without much problems.
>>
>> > so there isn't arch-specific execve support for arm/arm64. But, if you
>> > have got working execve support for arm/arm64 kernels less than 3.7, I
>> > don't see a real problem with checking it in (assuming it looks reasonable).
>>
>> I've support that is working in my environment. At least the defined
>> variables give some decent result. Please judge the quality for yourself.
>>
>> The error message reported comes from the fact that the file
>> syscalls.stp is regarded as empty by SystemTap if the kernel version is
>> greater then 3.7. I could not find a nice solution so far.
> Torsten,
> I've checked in your changes, they all looked reasonable. I added
> support for nd_syscall.execve. I worked around the empty tapset warning
> by adding a 'never' probe the the new tapset files.
David,
Thanks,
Torsten