linux-kernel - Re: [PATCH v4 1/5] genirq/affinity: Add irq_update_affinity

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Message-ID: <87y2iih1pv.fsf@nanos.tec.linutronix.de>
Date:   Tue, 01 Dec 2020 00:19:40 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     John Garry <john.garry@...wei.com>, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, lenb@...nel.org, rjw@...ysocki.net,
        gregkh@...uxfoundation.org, maz@...nel.org
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linuxarm@...wei.com, linux-acpi@...r.kernel.org, dwagner@...e.de,
        John Garry <john.garry@...wei.com>
Subject: Re: [PATCH v4 1/5] genirq/affinity: Add irq_update_affinity_desc()

On Tue, Dec 01 2020 at 01:35, John Garry wrote:

> Add a function to allow the affinity of an interrupt be switched to
> managed, such that interrupts allocated for platform devices may be
> managed.

Could you please add a paragraph which explains the limitations of that
interface?

> +/**
> + * irq_update_affinity_desc - Update affinity management for an interrupt
> + * @irq:	The interrupt number to update
> + * @affinity:	Pointer to the affinity descriptor
> + *
> + * This interface can be used to configure the affinity management of
> + * interrupts which have been allocated already.

Same here.

Thanks,

        tglx