linux-kernel - Re: [RFC PATCH v4 3/9] KVM: selftests: Use flag CLOCK_MONOTONIC

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Message-ID: <20210312111726.6xfpc2cycab7yfld@kamzik.brq.redhat.com>
Date:   Fri, 12 Mar 2021 12:17:26 +0100
From:   Andrew Jones <drjones@...hat.com>
To:     Yanan Wang <wangyanan55@...wei.com>
Cc:     kvm@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
        Ben Gardon <bgardon@...gle.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Peter Xu <peterx@...hat.com>, Marc Zyngier <maz@...nel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Arnd Bergmann <arnd@...db.de>,
        Michael Kerrisk <mtk.manpages@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        wanghaibin.wang@...wei.com, yezengruan@...wei.com,
        yuzenghui@...wei.com
Subject: Re: [RFC PATCH v4 3/9] KVM: selftests: Use flag CLOCK_MONOTONIC_RAW
 for timing

On Tue, Mar 02, 2021 at 08:57:45PM +0800, Yanan Wang wrote:
> In addition to function of CLOCK_MONOTONIC, flag CLOCK_MONOTONIC_RAW can
> also shield possiable impact of NTP, which can provide more robustness.
> 
> Suggested-by: Vitaly Kuznetsov <vkuznets@...hat.com>
> Signed-off-by: Yanan Wang <wangyanan55@...wei.com>
> Reviewed-by: Ben Gardon <bgardon@...gle.com>
> ---
>  tools/testing/selftests/kvm/demand_paging_test.c  |  8 ++++----
>  tools/testing/selftests/kvm/dirty_log_perf_test.c | 14 +++++++-------
>  tools/testing/selftests/kvm/lib/test_util.c       |  2 +-
>  tools/testing/selftests/kvm/steal_time.c          |  4 ++--
>  4 files changed, 14 insertions(+), 14 deletions(-)
>

Reviewed-by: Andrew Jones <drjones@...hat.com>