Re: [PATCH v2] selftests/mm: Add configs to fix testcase failure

[Anshuman Khandual <anshuman.khandual@arm.com>]

On 13/06/25 9:19 AM, Dev Jain wrote:
> If CONFIG_UPROBES is not set, a merge subtest fails:
> 
> Failure log:
> 
>   7151 12:46:54.627936  # # #  RUN           merge.handle_uprobe_upon_merged_vma ...
>   7152 12:46:54.639014  # # f /sys/bus/event_source/devices/uprobe/type
>   7153 12:46:54.639306  # # fopen: No such file or directory
>   7154 12:46:54.650451  # # # merge.c:473:handle_uprobe_upon_merged_vma:Expected read_sysfs("/sys/bus/event_source/devices/uprobe/type", &type) (1) == 0 (0)
>   7155 12:46:54.650730  # # # handle_uprobe_upon_merged_vma: Test terminated by assertion
>   7156 12:46:54.661750  # # #          FAIL  merge.handle_uprobe_upon_merged_vma
>   7157 12:46:54.662030  # # not ok 8 merge.handle_uprobe_upon_merged_vma
> 
> CONFIG_UPROBES is enabled by CONFIG_UPROBE_EVENTS, which gets enabled by
> CONFIG_FTRACE. Therefore add these configs to selftests/mm/config so that
> CI systems can include this config in the kernel build. To be completely
> safe, add CONFIG_PROFILING too, to enable the dependency chain
> PROFILING -> PERF_EVENTS -> UPROBE_EVENTS -> UPROBES.
> 
> Fixes: efe99fabeb11b ("selftests/mm: add test about uprobe pte be orphan during vma merge")
> Reported-by: Aishwarya <aishwarya.tcv@arm.com>
> Closes: https://lore.kernel.org/all/20250610103729.72440-1-aishwarya.tcv@arm.com/
> Tested-by: Aishwarya TCV <aishwarya.tcv@arm.com>
> Tested-by : Donet Tom <donettom@linux.ibm.com> 
> Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
> Signed-off-by: Dev Jain <dev.jain@arm.com>
> ---
> v1->v2:
>  - Add CONFIG_UPROBES (Mark Brown)
>  - Add CONFIG_PROFILING (Lorenzo)
> 
>  tools/testing/selftests/mm/config | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/tools/testing/selftests/mm/config b/tools/testing/selftests/mm/config
> index a28baa536332..deba93379c80 100644
> --- a/tools/testing/selftests/mm/config
> +++ b/tools/testing/selftests/mm/config
> @@ -8,3 +8,6 @@ CONFIG_GUP_TEST=y
>  CONFIG_TRANSPARENT_HUGEPAGE=y
>  CONFIG_MEM_SOFT_DIRTY=y
>  CONFIG_ANON_VMA_NAME=y
> +CONFIG_FTRACE=y
> +CONFIG_PROFILING=y
> +CONFIG_UPROBES=y

Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>