rcutorture: Add datestamp argument to kvm.sh

Allow datestamp to be specified to allow tests to be broken up and run
in parallel.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Greg KH <gregkh@linuxfoundation.org>

1 files changed, 11 insertions, 5 deletions

diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh
index 46c75ee2f528..9fcceed81079 100644
--- a/tools/testing/selftests/rcutorture/bin/kvm.sh
+++ b/tools/testing/selftests/rcutorture/bin/kvm.sh
@@ -50,11 +50,13 @@ configs=" sysidleY.2013.06.19a \
           PT2-NH \
           NT1-nh \
           NT3-NH"
+ds=`date +%Y.%m.%d-%H:%M:%S`
 
 usage () {
         echo "Usage: $scriptname optional arguments:"
         echo "       --builddir absolute-pathname"
         echo "       --configs \"config-file list\""
+        echo "       --datestamp string"
         echo "       --duration minutes"
         echo "       --rcu-kvm absolute-pathname"
         echo "       --results absolute-pathname"
@@ -98,6 +100,11 @@ do
                 configs="$2"
                 shift
                 ;;
+        --datestamp)
+                checkarg --datestamp "(relative pathname)" "$#" "$2" '^[^/]*$' '^--'
+                ds=$2
+                shift
+                ;;
         --duration)
                 checkarg --duration "(minutes)" $# "$2" '^[0-9]*$' error
                 dur=$2
@@ -147,13 +154,12 @@ if test -z "$resdir"
 then
         resdir=$KVM/res
         mkdir $resdir || :
-        ds=`date +%Y.%m.%d-%H:%M:%S`
-        mkdir $resdir/$ds
-        echo Datestamp: $ds
 else
-        mkdir -p "$resdir"
-        ds=""
+        mkdir -p "$resdir" || :
 fi
+mkdir $resdir/$ds
+echo Datestamp: $ds
+
 pwd > $resdir/$ds/testid.txt
 if test -d .git
 then