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tools/virtio/ringtest: fix run-on-all.sh 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: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Mike Rapoport 2016-05-04 13:15:50 +03:00 committed by Michael S. Tsirkin
parent 3b220cf867
commit ef1b144d23
1 changed files with 2 additions and 2 deletions
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4
tools/virtio/ringtest/run-on-all.sh
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@ -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)
do
#Don't run guest and host on same CPU
#It actually works ok if using signalling