On 3/29/19 11:09 AM, Nick Desaulniers wrote:
> On Fri, Mar 29, 2019 at 11:01 AM Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote:
>>
>> On 3/29/19 10:45 AM, Nick Desaulniers wrote:
>>> Fixes commit 8c3d220cb6b5 ("gcov: clang support")
>>>
>>> Cc: Greg Hackmann <ghackmann@xxxxxxxxxxx>
>>> Cc: Tri Vo <trong@xxxxxxxxxxx>
>>> Cc: Peter Oberparleiter <oberpar@xxxxxxxxxxxxx>
>>> Cc: linux-mm@xxxxxxxxx
>>> Cc: kbuild-all@xxxxxx
>>> Reported-by: kbuild test robot <lkp@xxxxxxxxx>
>>> Link: https://marc.info/?l=linux-mm&m=155384681109231&w=2
>>> Signed-off-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
>>
>> Reported-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
>> see https://lore.kernel.org/linux-mm/20190328225107.ULwYw%25akpm@xxxxxxxxxxxxxxxxxxxx/T/#mee26c00158574326e807480fc39dfcbd7bebd5fd
>>
>> Did you test this?
>
> Yes, built with gcc 7.3 and
> defconfig
> +
> CONFIG_GCOV_KERNEL=y
> CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
> CONFIG_GCOV_FORMAT_4_7=y
>
>> kernel/gcov/gcc_4_7.c includes local "gcov.h",
>> which includes <linux/module.h>, so why didn't that work or why
>> does this patch work?
>
> Good point. May be something in the configs from 0-day bot. Boarding
> a plane for Bangkok, but can dig further once landed.
>
> Maybe module support was disabled?
Yes, I reported the problem with CONFIG_MODULES not enabled.
--
~Randy
