RE: [PATCH 20/22] tools arch: Sync arch/x86/lib/memcpy_64.S with the kernel

[Luck, Tony]

>> If we are going to have all these copies of kernel files below
>> "tools/...", perhaps checkpatch could warn people touching one
>> that the other needs the same update?
>
> How would checkpatch know tools hasn't already updated the other?

If checkpatch had a list of all the tools copies, it could warn if a patch
touched a file without touching the copy.

Not completely ideal because people might update the two files in
separate patches in a series (in which case they would see warnings
from both patches).

Also means that checkpatch needs the list of copied files ... not sure
how often that changes.

-Tony