Re: [mainline]tools/perf build warnings

[jiang.peng9]

> Hey, please take a look at:
>
> tools/include/uapi/README
>
> More importantly this paragraph:
>
> "So its important not to touch the copies in tools/ when doing changes in
> the original kernel headers, that will be done later, when
> check-headers.sh inform about the change to the perf tools hackers."

Hi Arnaldo,

Thanks for pointing that out. I'll make sure to follow the instructions in tools/include/uapi/README and avoid modifying the copies in tools/ directly. 

Appreciate your guidance!

Best Regards,
Peng Jiang