From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A8E41C433E6 for ; Fri, 12 Mar 2021 11:18:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6FFBA64FD0 for ; Fri, 12 Mar 2021 11:18:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233815AbhCLLR5 (ORCPT ); Fri, 12 Mar 2021 06:17:57 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:37424 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233692AbhCLLRn (ORCPT ); Fri, 12 Mar 2021 06:17:43 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1615547863; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=UGPDzUa5JilVZrEVbbRzUiBVPETkoDHcYduKqCj+MOo=; b=b5iVaOfaYUBsZHo+EWiYYqTjrie1OlyVO3RuxJKUbiIw8z3RF1QEkHdjaJhM2Hc2jsQUIk 1OEhAzkb+2HHiIeUus+HoBxjTwQ9ifAp3OX+VguohP3FI0uqkNkupB95MqaeBhWJJJ5+vk zXq3e4dkgXW7HQgdwJrNv9fyQcZE920= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-407-q5kalNEnMASwlMrnVkZ9-Q-1; Fri, 12 Mar 2021 06:17:41 -0500 X-MC-Unique: q5kalNEnMASwlMrnVkZ9-Q-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 12C8318460E5; Fri, 12 Mar 2021 11:17:39 +0000 (UTC) Received: from kamzik.brq.redhat.com (unknown [10.40.192.104]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 64077694CD; Fri, 12 Mar 2021 11:17:29 +0000 (UTC) Date: Fri, 12 Mar 2021 12:17:26 +0100 From: Andrew Jones To: Yanan Wang Cc: kvm@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Paolo Bonzini , Ben Gardon , Sean Christopherson , Vitaly Kuznetsov , Peter Xu , Marc Zyngier , Ingo Molnar , Adrian Hunter , Jiri Olsa , Arnaldo Carvalho de Melo , Arnd Bergmann , Michael Kerrisk , Thomas Gleixner , wanghaibin.wang@huawei.com, yezengruan@huawei.com, yuzenghui@huawei.com Subject: Re: [RFC PATCH v4 3/9] KVM: selftests: Use flag CLOCK_MONOTONIC_RAW for timing Message-ID: <20210312111726.6xfpc2cycab7yfld@kamzik.brq.redhat.com> References: <20210302125751.19080-1-wangyanan55@huawei.com> <20210302125751.19080-4-wangyanan55@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210302125751.19080-4-wangyanan55@huawei.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 > Signed-off-by: Yanan Wang > Reviewed-by: Ben Gardon > --- > 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