Messages in this thread | | | Date | Wed, 28 Jul 2010 15:12:37 +0200 | From | Peter Oberparleiter <> | Subject | Re: GCOV doesn't seem to work on ARM with kernel 2.6.35-rc6 |
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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
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