Re: [PATCH v3] tools/virtio/ringtest: fix run-on-all.sh to work without /dev/cpu

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Ping?

On Tue, May 24, 2016 at 03:41:33PM +0300, Mike Rapoport wrote:
> Michael,
> 
> Any updates on this?
> 
> On Wed, May 04, 2016 at 01:15:50PM +0300, Mike Rapoport wrote:
> > /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@xxxxxxxxxxxxxxxxxx>
> > ---
> > v3: simplify by using lscpu -p=cpu 
> > v2: use lspcu instead of /proc/cpuinfo as per Cornelia's suggestion
> > 
> >  tools/virtio/ringtest/run-on-all.sh | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/tools/virtio/ringtest/run-on-all.sh b/tools/virtio/ringtest/run-on-all.sh
> > index 52b0f71..2e69ca8 100755
> > --- a/tools/virtio/ringtest/run-on-all.sh
> > +++ b/tools/virtio/ringtest/run-on-all.sh
> > @@ -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
> > -- 
> > 1.9.1
> > 
> 
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