linux-kernel - Re: [PATCH v2 7/8] selftests: Remove KSFT_TAP

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Message-ID: <CAGXu5j+F1iSu5GDG_FCykABXkH_gXcF=zjwwyev1vTDCXRLoVg@mail.gmail.com>
Date:   Thu, 25 Apr 2019 09:56:44 -0700
From:   Kees Cook <keescook@...omium.org>
To:     shuah <shuah@...nel.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Darren Hart <dvhart@...radead.org>,
        Christian Brauner <christian@...uner.io>,
        Tycho Andersen <tycho@...ho.ws>,
        Serge Hallyn <serge@...lyn.com>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 7/8] selftests: Remove KSFT_TAP_LEVEL

On Thu, Apr 25, 2019 at 9:36 AM shuah <shuah@...nel.org> wrote:
>
> On 4/24/19 5:12 PM, Kees Cook wrote:
> > Since sub-testing can now be detected by indentation level, this removes
> > KSFT_TAP_LEVEL so that subtests report their TAP header for later parsing.
>
> Does this take into ksft_print_header() getenv logic to avoid printing
> TAP headers from tests when they fork? e.g timers tests do that a lot.

I didn't change the ksft_print_header() code, in case you want it back
in the future. But nothing sets that variable any more in my series:

$ git grep KSFT_TAP_LEVEL
tools/testing/selftests/kselftest.h:    if (!(getenv("KSFT_TAP_LEVEL")))

I don't see the timers tests using print_header() at all, actually...

$ cd tools/testing/kselftest/timers
$ git grep print_header | wc -l
0

-- 
Kees Cook