linux-kernel - Re: [patch 07/32] genirq/msi: Count the allocated MSI descriptors

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Message-ID: <87ilwdfkmp.ffs@tglx>
Date:   Sat, 27 Nov 2021 20:45:18 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Bjorn Helgaas <helgaas@...nel.org>,
        Marc Zygnier <maz@...nel.org>,
        Alex Williamson <alex.williamson@...hat.com>,
        Kevin Tian <kevin.tian@...el.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Megha Dey <megha.dey@...el.com>,
        Ashok Raj <ashok.raj@...el.com>, linux-pci@...r.kernel.org,
        linux-s390@...r.kernel.org, Heiko Carstens <hca@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Jon Mason <jdmason@...zu.us>,
        Dave Jiang <dave.jiang@...el.com>,
        Allen Hubbe <allenbh@...il.com>, linux-ntb@...glegroups.com
Subject: Re: [patch 07/32] genirq/msi: Count the allocated MSI descriptors

On Sat, Nov 27 2021 at 20:22, Thomas Gleixner wrote:

> On Sat, Nov 27 2021 at 13:19, Greg Kroah-Hartman wrote:
>> On Sat, Nov 27, 2021 at 02:22:38AM +0100, Thomas Gleixner wrote:
>>> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
>>
>> No changelog?
>
> Bah. This one should not be there at all.
>
>> Anyway, why do we care about the number of decriptors?

The last part of this really cares about it for the dynamic extension
part, but that's core code which looks at the counter under the lock.

Thanks,

        tglx