[RFC resend] sched: Can we rename 'core scheduling' to 'smt scheduling'?

[Wang Jinchao]

On Tue, Dec 19, 2023 at 03:07:43PM +0800, Wang Jinchao wrote:
> The term 'core' in 'kernel/sched/' implies a relation to the kernel of sched,
> and at the same time, 'core' is used in 'core scheduling' to represent a CPU core.
> Both meanings coexist in the 'core.c' file and appear numerous times.
> 
> This can be confusing for newcomers.
> 
> --
> Wang Jinchao

Maybe we should rename sched/core_sched.c to sched/smt_sched.c, 
and move relevant code from sched/core.c to smt_sched.c.
I believe using "smt" in smt_sched.c would be clearer than "core" in core_sched.c, 
especially considering its association with core.c.