linux-kernel - Re: [PATCH 2/3] kselftest: Extend vDSO selftest

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Message-ID: <CALCETrUPaJCgY_herAUJAfqUbXS6S9xOaLz9abFEWOjEouNf+A@mail.gmail.com>
Date:   Tue, 24 Mar 2020 10:22:18 -0700
From:   Andy Lutomirski <luto@...nel.org>
To:     Vincenzo Frascino <vincenzo.frascino@....com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>, Shuah Khan <shuah@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andy Lutomirski <luto@...nel.org>
Subject: Re: [PATCH 2/3] kselftest: Extend vDSO selftest

On Tue, Mar 24, 2020 at 7:51 AM Vincenzo Frascino
<vincenzo.frascino@....com> wrote:
>
> The current version of the multiarch vDSO selftest verifies only
> gettimeofday.
>
> Extend the vDSO selftest to the other library functions:
>  - time
>  - clock_getres
>  - clock_gettime
>
> The extension has been used to verify the unified vdso library on the
> supported architectures.

The code in tools/testing/selftests/x86/test_vdso.c actually checks
that the times returned by the vDSO are correct.  Perhaps that code
should be copied or moved here?