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From: Thomas Gleixner <tglx@linutronix.de>
To: John Garry <john.garry@huawei.com>
Cc: Marc Zyngier <maz@kernel.org>,
	"linux-kernel\@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	chenxiang <chenxiang66@hisilicon.com>
Subject: Re: About irq_create_affinity_masks() for a platform device driver
Date: Wed, 22 Jan 2020 11:59:53 +0100	[thread overview]
Message-ID: <87o8uveoye.fsf@nanos.tec.linutronix.de> (raw)
In-Reply-To: <84a9411b-4ae3-1928-3d35-1666f2687ec8@huawei.com>

John,

John Garry <john.garry@huawei.com> writes:
> Would there be any issue with a SCSI platform device driver referencing 
> this function?
>
> So I have a multi-queue platform device, and I want to spread interrupts 
> over all possible CPUs, just like we can do for PCI MSI vectors. This 
> topic was touched on in [0].
>
> And, if so it's ok, could we export that same symbol?

I think you will need something similar to what we have in the pci/msi
code, but that shouldn't be in your device driver. So I'd rather create
platform infrastructure for this and export that.

Thanks,

        tglx

  reply	other threads:[~2020-01-22 11:00 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-22 10:09 About irq_create_affinity_masks() for a platform device driver John Garry
2020-01-22 10:59 ` Thomas Gleixner [this message]
2020-01-22 11:27   ` John Garry
2020-01-31 14:25     ` John Garry
2020-01-31 21:41       ` Thomas Gleixner
2020-02-03 15:00         ` John Garry
2020-02-04  9:20           ` Thomas Gleixner
2020-02-04  9:55             ` John Garry

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