From: Jason Gunthorpe <jgg@nvidia.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: LKML <linux-kernel@vger.kernel.org>,
Bjorn Helgaas <helgaas@kernel.org>, Marc Zygnier <maz@kernel.org>,
Alex Williamson <alex.williamson@redhat.com>,
Kevin Tian <kevin.tian@intel.com>,
Megha Dey <megha.dey@intel.com>, Ashok Raj <ashok.raj@intel.com>,
linux-pci@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Santosh Shilimkar <ssantosh@kernel.org>,
iommu@lists.linux-foundation.org, dmaengine@vger.kernel.org,
Stuart Yoder <stuyoder@gmail.com>,
Laurentiu Tudor <laurentiu.tudor@nxp.com>,
Nishanth Menon <nm@ti.com>, Tero Kristo <kristo@kernel.org>,
linux-arm-kernel@lists.infradead.org, x86@kernel.org,
Vinod Koul <vkoul@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Will Deacon <will@kernel.org>, Sinan Kaya <okaya@kernel.org>
Subject: Re: [patch 02/37] device: Add device::msi_data pointer and struct msi_device_data
Date: Sat, 27 Nov 2021 20:14:06 -0400 [thread overview]
Message-ID: <20211128001406.GT4670@nvidia.com> (raw)
In-Reply-To: <20211126230524.045836616@linutronix.de>
On Sat, Nov 27, 2021 at 02:20:09AM +0100, Thomas Gleixner wrote:
> +/**
> + * msi_setup_device_data - Setup MSI device data
> + * @dev: Device for which MSI device data should be set up
> + *
> + * Return: 0 on success, appropriate error code otherwise
> + *
> + * This can be called more than once for @dev. If the MSI device data is
> + * already allocated the call succeeds. The allocated memory is
> + * automatically released when the device is destroyed.
I would say 'by devres when the driver is removed' rather than device
is destroyed - to me the latter implies it would happen at device_del
or perhaps during release..
> +int msi_setup_device_data(struct device *dev)
> +{
> + struct msi_device_data *md;
> +
> + if (dev->msi.data)
> + return 0;
> +
> + md = devres_alloc(msi_device_data_release, sizeof(*md), GFP_KERNEL);
> + if (!md)
> + return -ENOMEM;
> +
> + raw_spin_lock_init(&md->lock);
I also couldn't guess why this needed to be raw?
Jason
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next prev parent reply other threads:[~2021-11-28 0:16 UTC|newest]
Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-27 1:20 [patch 00/37] genirq/msi, PCI/MSI: Spring cleaning - Part 2 Thomas Gleixner
2021-11-27 1:20 ` [patch 01/37] device: Move MSI related data into a struct Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 12:11 ` Greg Kroah-Hartman
2021-11-27 1:20 ` [patch 02/37] device: Add device::msi_data pointer and struct msi_device_data Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 12:12 ` Greg Kroah-Hartman
2021-11-28 0:14 ` Jason Gunthorpe [this message]
2021-11-28 19:09 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 03/37] PCI/MSI: Allocate MSI device data on first use Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 04/37] PCI/MSI: Use lock from msi_device_data Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 12:13 ` Greg Kroah-Hartman
2021-11-27 1:20 ` [patch 05/37] platform-msi: Allocate MSI device data on first use Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 06/37] bus: fsl-mc-msi: " Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 07/37] soc: ti: ti_sci_inta_msi: " Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 08/37] genirq/msi: Provide msi_device_populate/destroy_sysfs() Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-30 11:53 ` Jonathan Cameron
2021-11-27 1:20 ` [patch 09/37] PCI/MSI: Let the irq code handle sysfs groups Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 10/37] platform-msi: Let the core " Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 11/37] genirq/msi: Remove the original sysfs interfaces Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 12/37] platform-msi: Rename functions and clarify comments Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 13/37] platform-msi: Store platform private data pointer in msi_device_data Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 14/37] genirq/msi: Consolidate MSI descriptor data Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 15/37] platform-msi: Use msi_desc::msi_index Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 16/37] bus: fsl-mc-msi: " Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 17/37] soc: ti: ti_sci_inta_msi: " Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 18/37] PCI/MSI: " Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 19/37] genirq/msi: Add msi_device_data::properties Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 20/37] PCI/MSI: Store properties in device::msi::data Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 21/37] x86/pci/XEN: Use device MSI properties Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 22/37] x86/apic/msi: " Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 23/37] genirq/msi: " Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 24/37] powerpc/cell/axon_msi: Use MSI device properties Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 25/37] powerpc/pseries/msi: " Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 26/37] PCI/MSI: Provide MSI_FLAG_MSIX_CONTIGUOUS Thomas Gleixner
2021-11-27 1:21 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 27/37] powerpc/pseries/msi: Let core code check for contiguous entries Thomas Gleixner
2021-11-27 1:22 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 28/37] genirq/msi: Provide interface to retrieve Linux interrupt number Thomas Gleixner
2021-11-27 1:22 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 29/37] PCI/MSI: Use __msi_get_virq() in pci_get_vector() Thomas Gleixner
2021-11-27 1:22 ` Thomas Gleixner
2021-11-28 19:37 ` Marc Zyngier
2021-11-28 21:00 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 30/37] PCI/MSI: Simplify pci_irq_get_affinity() Thomas Gleixner
2021-11-27 1:22 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 31/37] dmaengine: mv_xor_v2: Get rid of msi_desc abuse Thomas Gleixner
2021-11-27 1:22 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 32/37] perf/smmuv3: Use msi_get_virq() Thomas Gleixner
2021-11-27 1:22 ` Thomas Gleixner
2021-11-27 1:20 ` [patch 33/37] iommu/arm-smmu-v3: " Thomas Gleixner
2021-11-27 1:22 ` Thomas Gleixner
2021-11-29 10:55 ` Will Deacon
2021-11-29 12:52 ` Thomas Gleixner
2021-11-29 12:58 ` Thomas Gleixner
2021-11-29 13:13 ` Robin Murphy
2021-11-29 14:42 ` Thomas Gleixner
2021-11-29 14:54 ` Robin Murphy
2021-11-30 9:36 ` Will Deacon
2021-11-30 12:30 ` Thomas Gleixner
2021-11-29 13:25 ` Robin Murphy
2021-11-27 1:21 ` [patch 34/37] mailbox: bcm-flexrm-mailbox: Rework MSI interrupt handling Thomas Gleixner
2021-11-27 1:22 ` Thomas Gleixner
2021-11-27 1:21 ` [patch 35/37] bus: fsl-mc: fsl-mc-allocator: Rework MSI handling Thomas Gleixner
2021-11-27 1:22 ` Thomas Gleixner
2021-11-27 1:21 ` [patch 36/37] soc: ti: ti_sci_inta_msi: Get rid of ti_sci_inta_msi_get_virq() Thomas Gleixner
2021-11-27 1:22 ` Thomas Gleixner
2021-11-27 1:21 ` [patch 37/37] dmaengine: qcom_hidma: Cleanup MSI handling Thomas Gleixner
2021-11-27 1:22 ` Thomas Gleixner
2021-11-29 19:56 ` Sinan Kaya
2021-11-27 1:21 ` [patch 00/37] genirq/msi, PCI/MSI: Spring cleaning - Part 2 Thomas Gleixner
2021-11-27 12:17 ` Greg Kroah-Hartman
2021-11-28 0:39 ` Jason Gunthorpe
2021-11-28 20:27 ` Thomas Gleixner
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