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Date: Tue, 15 Aug 2017 14:21:39 +0200 From: Paweł Staszewski <pstaszewski@...are.pl> To: Linux Kernel Network Developers <netdev@...r.kernel.org> Subject: Mellanox driver / cant access /prox/irq/XX/smp_affinity after upgrade from linux-4.13-rc4-next-20170811 to 4.13.0-rc5-next-20170815 Hi After upgrading kernel to latest next there is problem with accessing smp_affinity to write for mellanox driver For example - MEllanox: cat /proc/interrupts | grep ml 217: 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PCI-MSI 91750400-edge mlx5_pages_eq@pci:0000:af:00.0 218: 12237 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PCI-MSI 91750401-edge mlx5_cmd_eq@pci:0000:af:00.0 cat /proc/irq/218/smp_affinity ffffff,ffffffff echo "ffffff,ffffffff " > /proc/irq/218/smp_affinity -su: echo: write error: Input/output error For intel ixgbe: 90: 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PCI-MSI 12589056-edge enp24s0f3 cat /proc/irq/90/smp_affinity 0003ff,f0003fff echo "0003ff,f0003fff" > /proc/irq/90/smp_affinity Without errors. BR Pawel
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