Commit 22ac5ad4 authored by Robert Hoo's avatar Robert Hoo Committed by David S. Miller

samples/pktgen: Add some helper functions

1. given a device, get its NUMA belongings
2. given a device, get its queues' irq numbers.
3. given a NUMA node, get its cpu id list.
Signed-off-by: default avatarRobert Hoo <robert.hu@intel.com>
Signed-off-by: default avatarJesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent de218073
......@@ -119,3 +119,46 @@ function root_check_run_with_sudo() {
err 4 "cannot perform sudo run of $0"
fi
}
# Exact input device's NUMA node info
function get_iface_node()
{
local node=$(</sys/class/net/$1/device/numa_node)
if [[ $node == -1 ]]; then
echo 0
else
echo $node
fi
}
# Given an Dev/iface, get its queues' irq numbers
function get_iface_irqs()
{
local IFACE=$1
local queues="${IFACE}-.*TxRx"
irqs=$(grep "$queues" /proc/interrupts | cut -f1 -d:)
[ -z "$irqs" ] && irqs=$(grep $IFACE /proc/interrupts | cut -f1 -d:)
[ -z "$irqs" ] && irqs=$(for i in `ls -Ux /sys/class/net/$IFACE/device/msi_irqs` ;\
do grep "$i:.*TxRx" /proc/interrupts | grep -v fdir | cut -f 1 -d : ;\
done)
[ -z "$irqs" ] && err 3 "Could not find interrupts for $IFACE"
echo $irqs
}
# Given a NUMA node, return cpu ids belonging to it.
function get_node_cpus()
{
local node=$1
local node_cpu_list
local node_cpu_range_list=`cut -f1- -d, --output-delimiter=" " \
/sys/devices/system/node/node$node/cpulist`
for cpu_range in $node_cpu_range_list
do
node_cpu_list="$node_cpu_list "`seq -s " " ${cpu_range//-/ }`
done
echo $node_cpu_list
}
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment