diff options
Diffstat (limited to 'tools/testing/selftests/rcutorture/bin/jitter.sh')
| -rwxr-xr-x | tools/testing/selftests/rcutorture/bin/jitter.sh | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/tools/testing/selftests/rcutorture/bin/jitter.sh b/tools/testing/selftests/rcutorture/bin/jitter.sh index 86a217b41b9f..30cb5b27d32e 100755 --- a/tools/testing/selftests/rcutorture/bin/jitter.sh +++ b/tools/testing/selftests/rcutorture/bin/jitter.sh @@ -25,6 +25,18 @@ n=1 starttime=`gawk 'BEGIN { print systime(); }' < /dev/null` +nohotplugcpus= +for i in /sys/devices/system/cpu/cpu[0-9]* +do + if test -f $i/online + then + : + else + curcpu=`echo $i | sed -e 's/^[^0-9]*//'` + nohotplugcpus="$nohotplugcpus $curcpu" + fi +done + while : do # Check for done. @@ -35,13 +47,15 @@ do fi # Set affinity to randomly selected online CPU - cpus=`grep 1 /sys/devices/system/cpu/*/online | - sed -e 's,/[^/]*$,,' -e 's/^[^0-9]*//'` - - # Do not leave out poor old cpu0 which may not be hot-pluggable - if [ ! -f "/sys/devices/system/cpu/cpu0/online" ]; then - cpus="0 $cpus" + if cpus=`grep 1 /sys/devices/system/cpu/*/online 2>&1 | + sed -e 's,/[^/]*$,,' -e 's/^[^0-9]*//'` + then + : + else + cpus= fi + # Do not leave out non-hot-pluggable CPUs + cpus="$cpus $nohotplugcpus" cpumask=`awk -v cpus="$cpus" -v me=$me -v n=$n 'BEGIN { srand(n + me + systime()); |