109 lines
3.0 KiB
Bash
109 lines
3.0 KiB
Bash
#!/bin/bash
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################################################################################
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# Copyright (c) 2016 Wind River Systems, Inc.
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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################################################################################
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#
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# Purpose:
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# Query nova configured PCI devices and display related IRQ cpulist info.
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#
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# Usage:
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# /usr/bin/nova-pci-interrupts.sh <pci_addr>
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#
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# Define minimal path
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PATH=/bin:/usr/bin:/usr/local/bin:/usr/sbin
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# logger setup
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WHOAMI=`basename $0`
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function LOG ()
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{
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local tstamp_H=$( date +"%Y-%0m-%0e %H:%M:%S.%N" )
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echo -e "${tstamp_H} ${HOSTNAME} $0($$): $@";
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}
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function INFO()
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{
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MSG="INFO"
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LOG "${MSG} $@"
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}
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function ERROR()
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{
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MSG="ERROR"
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LOG "${MSG} $@"
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}
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# Require root to access all /proc and /sys details (e.g., smp_affinity_cpulist, etc)
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if [ $UID -ne 0 ]; then
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ERROR "require root or sudo"
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exit 1
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fi
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# Define array of PCI addresses to display IRQ information
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declare -a ADDRS
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if [ "$#" -eq 0 ]; then
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INFO "No PCI addrs specified. usage: $0 <pci_addr> <pci_addr> ...\n(querying nova configured pci devices on ${HOSTNAME})"
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source /etc/nova/openrc
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TMPNAME=$(printf "/tmp/%s-tmp.%d" $(basename $0) $$)
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CMD="nova list --all --host ${HOSTNAME} --fields=wrs-res:topology,wrs-res:pci_devices"
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INFO "nova configured PCI devices and associated IRQ cpulists:"
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echo ${CMD}
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${CMD} 2>/dev/null > ${TMPNAME}
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cat ${TMPNAME}
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# extract pci_addrs from field 'wrs-res:pci_devices'
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ADDRS+=( $(cat ${TMPNAME} | awk '/addr:/ {match($0, "addr:([^,]*),", a); print a[1]}') )
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rm -f ${TMPNAME}
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INFO "Found: pci_addrs:" ${ADDRS[@]}
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else
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ADDRS+=( $@ )
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fi
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for pci_addr in ${ADDRS[@]}; do
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# Find PCI device matching address, keep last matching device name
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dev=$(find /sys/devices -name "${pci_addr}" | \
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perl -ne 'print $1 if /\/sys\/devices\/pci.*([[:xdigit:]]{4}:[[:xdigit:]]{2}:[[:xdigit:]]{2}\.[[:xdigit:]])$/;')
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if [ -z "${dev}" ] ; then
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ERROR "cannot find pci_addr: ${pci_addr}"
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continue
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fi
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# Obtain all IRQs for this device
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irq=$(cat /sys/bus/pci/devices/${dev}/irq 2>/dev/null)
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if [ "${irq}" -eq 0 ]; then
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irq=""
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fi
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msi_irqs=$(ls /sys/bus/pci/devices/${dev}/msi_irqs 2>/dev/null | xargs)
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numa_node=$(cat /sys/bus/pci/devices/${dev}/numa_node 2>/dev/null | xargs)
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uevent=$(cat /sys/bus/pci/devices/${dev}/uevent 2>/dev/null | xargs)
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if [[ ${uevent} =~ PCI_ID=([^[:space:]]+):([^[:space:]]+) ]]; then
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vendor_id=${BASH_REMATCH[1]}
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product_id=${BASH_REMATCH[2],,}
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else
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vendor_id=""
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product_id=""
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fi
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pci_info=$(lspci -s ${dev} 2>/dev/null)
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INFO "addr:${dev} vendor:${vendor_id} product:${product_id} numa_node:${numa_node} irq:${irq} msi_irqs:${msi_irqs} ; ${pci_info}"
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# flatten list of irqs, removing duplicates
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declare -a irqs=( $(echo "${irq} ${msi_irqs}" | xargs | tr ' ' '\n' | sort -nu) )
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for i in ${irqs[@]}
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do
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if [[ -e /proc/irq/${i} ]]; then
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cpulist=$(cat /proc/irq/${i}/smp_affinity_list 2>/dev/null)
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LOG "irq:${i} cpulist:${cpulist}"
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fi
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done
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done
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exit 0
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