Commit ef1b144d authored by Mike Rapoport's avatar Mike Rapoport Committed by Michael S. Tsirkin

tools/virtio/ringtest: fix to work without /dev/cpu

/dev/cpu is only available on x86 with certain modules (e.g. msr) enabled.
Using lscpu to get processors count is more portable.
Signed-off-by: default avatarMike Rapoport <>
Signed-off-by: default avatarMichael S. Tsirkin <>
parent 3b220cf8
......@@ -3,10 +3,10 @@
#use last CPU for host. Why not the first?
#many devices tend to use cpu0 by default so
#it tends to be busier
HOST_AFFINITY=$(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n|tail -1)
HOST_AFFINITY=$(lscpu -p=cpu | tail -1)
#run command on all cpus
for cpu in $(cd /dev/cpu; ls|grep -v '[a-z]'|sort -n);
for cpu in $(seq 0 $HOST_AFFINITY)
#Don't run guest and host on same CPU
#It actually works ok if using signalling
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