Re: [PATCH v13 2/3] cachestat: implement cachestat syscall

[Andrew Morton]

On Thu, 4 May 2023 19:26:11 +0200 Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:

> >  arch/x86/entry/syscalls/syscall_32.tbl |   1 +
> >  arch/x86/entry/syscalls/syscall_64.tbl |   1 +
> 
> This should be wired up on each and every architecture.
> Currently we're getting
> 
>     <stdin>:1567:2: warning: #warning syscall cachestat not implemented [-Wcpp]
> 
> in linux-next for all the missing architectures.

Is that wise?  We risk adding a syscall to an architecture without the
arch maintainers and testers even knowing about it.

The compile-time nag is there to inform the arch maintainers that a new
syscall is available and that they should wire it up, run the selftest
and then ship the code if they're happy with the result.