linux-kernel - Re: [RFC PATCH] genirq: Exclude managed irq during irq migration

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Date:   Wed, 25 Oct 2023 16:36:31 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Chen Yu <yu.c.chen@...el.com>, Juergen Gross <jgross@...e.com>
Cc:     Len Brown <len.brown@...el.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Dan Williams <dan.j.williams@...el.com>,
        linux-kernel@...r.kernel.org, Chen Yu <yu.chen.surf@...il.com>,
        Chen Yu <yu.c.chen@...el.com>,
        Wendy Wang <wendy.wang@...el.com>
Subject: Re: [RFC PATCH] genirq: Exclude managed irq during irq migration

On Fri, Oct 20 2023 at 15:25, Chen Yu wrote:
> diff --git a/kernel/irq/matrix.c b/kernel/irq/matrix.c
> index 1698e77645ac..d245ad76661e 100644
> --- a/kernel/irq/matrix.c
> +++ b/kernel/irq/matrix.c
> @@ -475,7 +475,7 @@ unsigned int irq_matrix_allocated(struct irq_matrix *m)
>  {
>  	struct cpumap *cm = this_cpu_ptr(m->maps);
>  
> -	return cm->allocated;
> +	return cm->allocated - cm->managed_allocated;

The kernel documentation above this function is now misleading. Sigh...