why spin_lock_irqsave needs to disable preemption on multiprocessor

Just curious why spin_lock_irqsave needs to disable the preemption after disabling local interrupt.

static inline unsigned long __raw_spin_lock_irqsave(raw_spinlock_t *lock){    unsigned long flags;    local_irq_save(flags);    preempt_disable(); ===> can preemption happen with interrupt disabled?    spin_acquire(&lock->dep_map, 0, 0, _RET_IP_);    ...}

Preemption should only be possible with interrupt enabled, thus there should be no need to worry about preemption after disabling interrupt.