[PATCH v5 24/32] ARM: run softirqs on the per-CPU IRQ stack

[Sebastian Andrzej Siewior]

On 2022-01-24 18:47:36 [+0100], Ard Biesheuvel wrote:
> @@ -58,6 +61,17 @@ static void __init init_irq_stacks(void)
>  	}
>  }
>  
> +static void ____do_softirq(void *arg)
> +{
> +	__do_softirq();
> +}
> +
> +void do_softirq_own_stack(void)
> +{
> +	call_with_stack(____do_softirq, NULL,
> +			__this_cpu_read(irq_stack_ptr));
> +}
> +

Do I miss the obvious here or is the irq_stack_ptr only used for
softirqs and not for hardirqs?

>  int arch_show_interrupts(struct seq_file *p, int prec)
>  {
>  #ifdef CONFIG_FIQ

Sebastian