[PATCH v4 11/23] powerpc/syscall: Rename syscall_64.c into syscall.c

[Nicholas Piggin]

Excerpts from David Laight's message of January 26, 2021 8:28 pm:
> From: Nicholas Piggin
>> Sent: 26 January 2021 10:21
>> 
>> Excerpts from Christophe Leroy's message of January 26, 2021 12:48 am:
>> > syscall_64.c will be reused almost as is for PPC32.
>> >
>> > Rename it syscall.c
>> 
>> Could you rename it to interrupt.c instead? A system call is an
>> interrupt, and the file now also has code to return from other
>> interrupts as well, and it matches the new asm/interrupt.h from
>> the interrupts series.
> 
> Hmmm....
> 
> That might make it harder for someone looking for the system call
> entry code to find it.

It's very grep'able.

> In some sense interrupts are the simpler case.
> 
> Especially when comparing with other architectures which have
> special instructions for syscall entry.

powerpc does have a special instruction for syscall, and it causes a
system call interrupt.

I'm not sure about other architectures, but for powerpc its more 
sensible to call it interrupt.c than syscall.c.

Thanks,
Nick