lkml.org 
[lkml]   [2010]   [Jul]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: GCOV doesn't seem to work on ARM with kernel 2.6.35-rc6
On 27.07.2010 09:35, Karol Lewandowski wrote:
> On 07/26/2010 06:57 PM, Peter Oberparleiter wrote:
>> Karol Lewandowski wrote:
>>> On 07/26/2010 12:32 PM, Karol Lewandowski wrote:
>>>> I'm trying to use code coverage measurements with mainline Linux kernel
>>>> 2.6.35-rc6 on ARM platform (specifically on Samsung's S5PC110 board).
> ...
>> I just tested gcov support for 2.6.35-rc6 on s390 and it works without
>> a problem. My assumption would be that you are using an EABI-GCC to
>> compile your kernel. Those compilers name their constructor symbols
>
> Exactly.
>
>> differently than the vanilla GCC so that the whole constructor calling
>> mechanism on which the gcov support relies, will fail. If that is
>> indeed the case, the following testing patch should solve your
>> problem:
>
> Yes, that was the case and your patch indeed solved my problem.

Excellent. I could imagine that other ARM users might also benefit from
this patch. Before I submit it for integration though, I need to make
sure that it also works for kernel modules. Could you enable profiling
for a kernel module and verify that you are seeing files in
/sys/kernel/debug/gcov belonging to that module??


Regards,
Peter Oberparleiter



\
 
 \ /
  Last update: 2010-07-28 15:15    [W:0.293 / U:0.016 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site