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    Subject[PATCH tip/core/rcu 26/28] rcutorture: Record results from repeated runs of the same test scenario
    Date
    From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>

    Repeatedly running a given test, for example, by repeating the name
    as in "--configs "TREE08 TREE08 TREE08" records the results only of
    the last run of this test. This is because the earlier results are
    overwritten by the later results.

    This commit therefore checks for earlier results, using numbered
    file extensions to distinguish multiple runs. The earlier example
    would therefore create directories TREE01, TREE01.2, and TREE01.3.

    Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
    Cc: Greg KH <gregkh@linuxfoundation.org>
    ---
    tools/testing/selftests/rcutorture/bin/kvm.sh | 16 +++++++++++++++-
    1 file changed, 15 insertions(+), 1 deletion(-)

    diff --git a/tools/testing/selftests/rcutorture/bin/kvm.sh b/tools/testing/selftests/rcutorture/bin/kvm.sh
    index b8d278904dee..0783ec9c583e 100644
    --- a/tools/testing/selftests/rcutorture/bin/kvm.sh
    +++ b/tools/testing/selftests/rcutorture/bin/kvm.sh
    @@ -204,8 +204,22 @@ fi

    for CF in $configs
    do
    + # Running TREE01 multiple times creates TREE01, TREE01.2, TREE01.3, ...
    rd=$resdir/$ds/$CF
    - mkdir $rd || :
    + if test -d "${rd}"
    + then
    + n="`ls -d "${rd}"* | grep '\.[0-9]\+$' |
    + sed -e 's/^.*\.\([0-9]\+\)/\1/' |
    + sort -k1n | tail -1`"
    + if test -z "$n"
    + then
    + rd="${rd}.2"
    + else
    + n="`expr $n + 1`"
    + rd="${rd}.${n}"
    + fi
    + fi
    + mkdir "${rd}"
    echo Results directory: $rd
    kvm-test-1-rcu.sh $CONFIGFRAG/$kversion/$CF $builddir $rd $dur "-nographic $RCU_QEMU_ARG" "rcutorture.test_no_idle_hz=1 rcutorture.verbose=1 $RCU_BOOTARGS"
    done
    --
    1.8.1.5


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