Merge tag 'sched-core-2024-11-18' into loongarch-next

LoongArch architecture changes for 6.13 depend on the sched-core changes
(PREEMPT_LAZY) to completely support RT, so merge them to create a base.

diff --cc arch/riscv/Kconfig
Simple merge

diff --cc arch/x86/Kconfig
Simple merge

diff --cc include/linux/sched/task_stack.h
Simple merge

diff --cc kernel/fork.c
Simple merge

diff --cc kernel/sched/core.c
Simple merge

diff --cc kernel/sched/ext.c
Simple merge

diff --cc kernel/sched/fair.c
Simple merge

diff --cc kernel/sched/sched.h
Simple merge

diff --cc kernel/sched/syscalls.c
Simple merge