[PATCH 5/7] um: Add an internal header shared among the user code

[Tiwei Bie]

On 4/23/24 8:22 PM, Johannes Berg wrote:
> On Tue, 2024-04-23 at 20:09 +0800, Tiwei Bie wrote:
>> On 4/23/24 7:30 PM, Johannes Berg wrote:
>>> On Tue, 2024-04-23 at 19:24 +0800, Tiwei Bie wrote:
>>>>
>>>>  $(USER_OBJS:.o=.%): \
>>>> -	c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS) -include $(srctree)/include/linux/kern_levels.h -include user.h $(CFLAGS_$(basetarget).o)
>>>> +	c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS) -include $(srctree)/include/linux/kern_levels.h \
>>>> +		-include user.h -include $(srctree)/arch/um/os-Linux/internal.h $(CFLAGS_$(basetarget).o)
>>>>
>>>
>>> Why not just include it explicitly?
>>
>> I think it might be more convenient if we include it implicitly,
>> especially since there are two levels of directories under os-Linux/.
>> But I don't have a strong opinion on this. I'm also willing to
>> include it explicitly.
> 
> Yeah, ok, dunno.
> 
>>> We do have the warnings?
>>
>> Yeah. Without this patch, I can get below warnings with `make ARCH=um defconfig && make ARCH=um`:
>>
> 
> Sure. I meant, we don't need to hide the include, if we need to add it
> to some other file, we'll have the warnings as a reminder. :)
> 
> I don't think anyone today would write the code as it is now ...

Makes sense. Will include it explicitly. Thanks!

Regards,
Tiwei