On 8/4/20 5:30 AM, Colin King wrote: > From: Colin Ian King <colin.king@xxxxxxxxxxxxx> > > The current test will exit with a failure if it cannot set affinity on > specific CPUs which is problematic when running this on single CPU > systems. Add a check for the number of CPUs and skip the test if > the CPU requirement is not met. > > Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx> > --- > tools/testing/selftests/net/msg_zerocopy.sh | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/tools/testing/selftests/net/msg_zerocopy.sh b/tools/testing/selftests/net/msg_zerocopy.sh > index 825ffec85cea..97bc527e1297 100755 > --- a/tools/testing/selftests/net/msg_zerocopy.sh > +++ b/tools/testing/selftests/net/msg_zerocopy.sh > @@ -21,6 +21,11 @@ readonly DADDR6='fd::2' > > readonly path_sysctl_mem="net.core.optmem_max" > > +if [[ $(nproc) -lt 4 ]]; then > + echo "SKIP: test requires at least 4 CPUs" > + exit 4 > +fi > + > # No arguments: automated test > if [[ "$#" -eq "0" ]]; then > $0 4 tcp -t 1 > Test explicitly uses CPU 2 and 3, right ? nproc could be 500, yet cpu 2 or 3 could be offline # cat /sys/devices/system/cpu/cpu3/online 0 # echo $(nproc) 71
