linux-kernel - [PATCH v3 2/8] PCI: hookup irq_get

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20241112-refactor-blk-affinity-helpers-v3-2-573bfca0cbd8@kernel.org>
Date: Tue, 12 Nov 2024 14:26:17 +0100
From: Daniel Wagner <wagi@...nel.org>
To: Jens Axboe <axboe@...nel.dk>, Bjorn Helgaas <bhelgaas@...gle.com>, 
 "Michael S. Tsirkin" <mst@...hat.com>, Jason Wang <jasowang@...hat.com>, 
 Xuan Zhuo <xuanzhuo@...ux.alibaba.com>, 
 Eugenio Pérez <eperezma@...hat.com>, 
 "Martin K. Petersen" <martin.petersen@...cle.com>, 
 Keith Busch <kbusch@...nel.org>, Christoph Hellwig <hch@....de>, 
 Sagi Grimberg <sagi@...mberg.me>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-block@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-pci@...r.kernel.org, virtualization@...ts.linux.dev, 
 linux-scsi@...r.kernel.org, megaraidlinux.pdl@...adcom.com, 
 mpi3mr-linuxdrv.pdl@...adcom.com, MPT-FusionLinux.pdl@...adcom.com, 
 storagedev@...rochip.com, linux-nvme@...ts.infradead.org, 
 Daniel Wagner <wagi@...nel.org>
Subject: [PATCH v3 2/8] PCI: hookup irq_get_affinity callback

struct bus_type has a new callback for retrieving the IRQ affinity for a
device. Hook this callback up for PCI based devices.

Acked-by: Bjorn Helgaas <bhelgaas@...gle.com>
Signed-off-by: Daniel Wagner <wagi@...nel.org>
---
 drivers/pci/pci-driver.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 35270172c833186995aebdda6f95ab3ffd7c67a0..a9cb0e3ad2e6eca58c34683303b1242228e96909 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -1670,6 +1670,19 @@ static void pci_dma_cleanup(struct device *dev)
 		iommu_device_unuse_default_domain(dev);
 }

+/**
+ * pci_device_irq_get_affinity - get IRQ affinity mask for device
+ * @dev: ptr to dev structure
+ * @irq_vec: interrupt vector number
+ *
+ * Return the CPU affinity mask for @dev and @irq_vec.
+ */
+static const struct cpumask *pci_device_irq_get_affinity(struct device *dev,
+					unsigned int irq_vec)
+{
+	return pci_irq_get_affinity(to_pci_dev(dev), irq_vec);
+}
+
 const struct bus_type pci_bus_type = {
 	.name		= "pci",
 	.match		= pci_bus_match,
@@ -1677,6 +1690,7 @@ const struct bus_type pci_bus_type = {
 	.probe		= pci_device_probe,
 	.remove		= pci_device_remove,
 	.shutdown	= pci_device_shutdown,
+	.irq_get_affinity = pci_device_irq_get_affinity,
 	.dev_groups	= pci_dev_groups,
 	.bus_groups	= pci_bus_groups,
 	.drv_groups	= pci_drv_groups,

-- 
2.47.0