linux-kernel - Re: [PATCH] selftests: timers: Fix run_destructive

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Date:   Fri, 18 Aug 2017 15:13:04 -0700
From:   John Stultz <john.stultz@...aro.org>
To:     Shuah Khan <shuahkh@....samsung.com>
Cc:     Shuah Khan <shuah@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Stephen Boyd <sboyd@...eaurora.org>,
        lkml <linux-kernel@...r.kernel.org>,
        linux-kselftest@...r.kernel.org
Subject: Re: [PATCH] selftests: timers: Fix run_destructive_tests target to
 handle skipped tests

On Thu, Aug 17, 2017 at 3:48 PM, Shuah Khan <shuahkh@....samsung.com> wrote:
> When a test exits with skip exit code of 4, "make run_destructive_tests"
> halts testing. Fix run_destructive_tests target to handle error exit codes.
>
> Reported-by: John Stultz <john.stultz@...aro.org>
> Signed-off-by: Shuah Khan <shuahkh@....samsung.com>
> ---
>  tools/testing/selftests/timers/Makefile | 26 +++++++++++++-------------
>  1 file changed, 13 insertions(+), 13 deletions(-)
>
> diff --git a/tools/testing/selftests/timers/Makefile b/tools/testing/selftests/timers/Makefile
> index c805ab048d26..6c1327278d5f 100644
> --- a/tools/testing/selftests/timers/Makefile
> +++ b/tools/testing/selftests/timers/Makefile
> @@ -13,20 +13,20 @@ TEST_GEN_PROGS_EXTENDED = alarmtimer-suspend valid-adjtimex adjtick change_skew
>
>  include ../lib.mk
>
> +define RUN_DESTRUCTIVE_TESTS
> +       @for TEST in $(TEST_GEN_PROGS_EXTENDED); do \
> +               BASENAME_TEST=`basename $$TEST`;        \
> +               if [ ! -x $$BASENAME_TEST ]; then       \
> +                       echo "selftests: Warning: file $$BASENAME_TEST is not executable, correct this.";\
> +                       echo "selftests: $$BASENAME_TEST [FAIL]"; \
> +               else                                    \
> +                       cd `dirname $$TEST`; (./$$BASENAME_TEST && echo "selftests: $$BASENAME_TEST [PASS]") || echo "selftests:  $$BASENAME_TEST [FAIL]"; cd -;\
> +               fi;                                     \
> +       done;
> +endef
> +
>  # these tests require escalated privileges
>  # and may modify the system time or trigger
>  # other behavior like suspend
>  run_destructive_tests: run_tests
> -       ./alarmtimer-suspend
> -       ./valid-adjtimex
> -       ./adjtick
> -       ./change_skew
> -       ./skew_consistency
> -       ./clocksource-switch
> -       ./freq-step
> -       ./leap-a-day -s -i 10


So this resolves the issue with tests returning skipped, but we'll
need to change the leap-a-day test to default to the specified
arguments above, as it runs indefinitely w/o arguments. Thus with the
patch above, make run_destructive_tests never completes.

I'll scratch a patch out to make the change in defaults.

thanks
-john