Re: [RFC 5/7] mm: introduce external memory hinting API

[Minchan Kim <minchan@kernel.org>]

On Wed, May 29, 2019 at 11:41:23AM +0800, Hillf Danton wrote:
> 
> On Mon, 20 May 2019 12:52:52 +0900 Minchan Kim wrote:
> > --- a/arch/x86/entry/syscalls/syscall_64.tbl
> > +++ b/arch/x86/entry/syscalls/syscall_64.tbl
> > @@ -355,6 +355,7 @@
> >  425	common	io_uring_setup		__x64_sys_io_uring_setup
> >  426	common	io_uring_enter		__x64_sys_io_uring_enter
> >  427	common	io_uring_register	__x64_sys_io_uring_register
> > +428	common	process_madvise		__x64_sys_process_madvise
> >  
> Much better if something similar is added for arm64.

I will port every architecture once we figure out RFC and reaches the
conclusion for right interface.

> 
> >  #
> >  # x32-specific system call numbers start at 512 to avoid cache impact
> > --- a/include/uapi/asm-generic/unistd.h
> > +++ b/include/uapi/asm-generic/unistd.h
> > @@ -832,6 +832,8 @@ __SYSCALL(__NR_io_uring_setup, sys_io_uring_setup)
> >  __SYSCALL(__NR_io_uring_enter, sys_io_uring_enter)
> >  #define __NR_io_uring_register 427
> >  __SYSCALL(__NR_io_uring_register, sys_io_uring_register)
> > +#define __NR_process_madvise 428
> > +__SYSCALL(__NR_process_madvise, sys_process_madvise)
> >  
> >  #undef __NR_syscalls
> >  #define __NR_syscalls 428
> 
> Seems __NR_syscalls needs to increment by one.

Thanks. I will fix it.