On 11/01/2017 04:52 PM, Thomas Gleixner wrote:
> On Wed, 1 Nov 2017, Shuah Khan wrote:
>> On 10/17/2017 08:10 PM, [email protected] wrote:
>>> From: Lei Yang <[email protected]>
>>>
>>> Kconfig CONFIG_CPU_NOTIFIER_ERROR_INJECT has been removed since kernel 4.10
>>> check commit:
>>> commit 530e9b76ae8f863dfdef4a6ad0b38613d32e8c3f
>>> Author: Thomas Gleixner <[email protected]>
>>> Date: Wed Dec 21 20:19:53 2016 +0100
>>>
>>> cpu/hotplug: Remove obsolete cpu hotplug register/unregister functions
>>>
>>> hotcpu_notifier(), cpu_notifier(), __hotcpu_notifier(), __cpu_notifier(),
>>> register_hotcpu_notifier(), register_cpu_notifier(),
>>> __register_hotcpu_notifier(), __register_cpu_notifier(),
>>> unregister_hotcpu_notifier(), unregister_cpu_notifier(),
>>> __unregister_hotcpu_notifier(), __unregister_cpu_notifier()
>>> <snip>
>>>
>>> Signed-off-by: Lei Yang <[email protected]>
>>> ---
>>> tools/testing/selftests/cpu-hotplug/config | 1 -
>>> 1 file changed, 1 deletion(-)
>>>
>>> diff --git a/tools/testing/selftests/cpu-hotplug/config b/tools/testing/selftests/cpu-hotplug/config
>>> index e6ab090..d4aca2a 100644
>>> --- a/tools/testing/selftests/cpu-hotplug/config
>>> +++ b/tools/testing/selftests/cpu-hotplug/config
>>> @@ -1,2 +1 @@
>>> CONFIG_NOTIFIER_ERROR_INJECTION=y
>>> -CONFIG_CPU_NOTIFIER_ERROR_INJECT=m
>>>
>>
>> Yes. It is removed from the kernel. However, selftests from the latest
>> release do get run routinely on older stable releases. Dropping the
>> config will impact coverage on older releases.
>>
>> Thomas/Greg,
>>
>> Any ideas on what we should do about this. On one hand it is a good idea
>> to remove it, however my concern is coverage on older releases.
>
> Can you check the kernel version on which you are running and do it runtime
> conditionally?
>
I have been avoiding adding kernel version checks to tests. Maybe this is
one exception since the functionality is obsoleted.
In any case, just removing the config isn't the complete solution. I will
have to think about this some.
thanks,
-- Shuah
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