linux-kernel - Re: [patch 02/10] genirq/msi: Use lock guards for MSI descriptor locking

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Message-ID: <8734fiywe0.ffs@tglx>
Date: Wed, 12 Mar 2025 18:46:47 +0100
From: Thomas Gleixner <tglx@...utronix.de>
To: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Cc: LKML <linux-kernel@...r.kernel.org>, Marc Zyngier <maz@...nel.org>,
 Nishanth Menon <nm@...com>, Tero Kristo <kristo@...nel.org>, Santosh
 Shilimkar <ssantosh@...nel.org>, Jon Mason <jdmason@...zu.us>, Dave Jiang
 <dave.jiang@...el.com>, Allen Hubbe <allenbh@...il.com>,
 ntb@...ts.linux.dev, Bjorn Helgaas <bhelgaas@...gle.com>,
 linux-pci@...r.kernel.org, Haiyang Zhang <haiyangz@...rosoft.com>, Wei Liu
 <wei.liu@...nel.org>, linux-hyperv@...r.kernel.org, Wei Huang
 <wei.huang2@....com>, Manivannan Sadhasivam
 <manivannan.sadhasivam@...aro.org>, "James E.J. Bottomley"
 <James.Bottomley@...senPartnership.com>, "Martin K. Petersen"
 <martin.petersen@...cle.com>, linux-scsi@...r.kernel.org, Dan Williams
 <dan.j.williams@...el.com>
Subject: Re: [patch 02/10] genirq/msi: Use lock guards for MSI descriptor
 locking

On Wed, Mar 12 2025 at 15:08, Jonathan Cameron wrote:
> On Tue, 11 Mar 2025 22:26:52 +0100
> Thomas Gleixner <tglx@...utronix.de> wrote:
>>  
>>  #define return_ptr(p)	return no_free_ptr(p)
>>  
>> +#define retain_ptr(p)				\
>> +	__get_and_null(p, NULL)
> Single line?
>
> This sort of thing got discussed in the past though I doubt I can find
> the thread. There was some push back but maybe now is it's time!
>
> Probably worth shouting about it a bit to attract attention. Maybe
> a separate patch.

Yes of course.