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=-3.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 8EFF4C2D0A3 for ; Mon, 2 Nov 2020 21:27:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2A17D208A9 for ; Mon, 2 Nov 2020 21:27:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="NL36DgAN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726525AbgKBV1W (ORCPT ); Mon, 2 Nov 2020 16:27:22 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:39701 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725929AbgKBV1V (ORCPT ); Mon, 2 Nov 2020 16:27:21 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1604352440; 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=AcZsDHqiU0z9govFV78wlNAx19ATsA9/xILzMrob+9I=; b=NL36DgANBl7bthatcKwu2QJSXovwZegzL0O90/1V0QU0KCJX3JGbwaGXoHnuSIkb3HC6FS b+YA1RccLqrIHkhaokgva7tQzB7z1WBKOpZNFaVDy+n3lYfde7hDZmWKUHxJmkJaFjWZ+8 U+LjyFStQZHFi6ONhuhYTTbwWOZoAs4= Received: from mail-qt1-f199.google.com (mail-qt1-f199.google.com [209.85.160.199]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-310-s9o7go72NIa3mPGW4S5TAw-1; Mon, 02 Nov 2020 16:27:18 -0500 X-MC-Unique: s9o7go72NIa3mPGW4S5TAw-1 Received: by mail-qt1-f199.google.com with SMTP id u28so2603511qtv.20 for ; Mon, 02 Nov 2020 13:27:18 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=AcZsDHqiU0z9govFV78wlNAx19ATsA9/xILzMrob+9I=; b=R2VxMENHpFBhZVy1Wp0pHHeJ86TrqIWWdIAUnU0K937inBipK2oKzuj06XraRYqnTq 5l25b3gHMDKgQVZZGg3JHYIkMIU91+LBwd17SxoC2q7VLja8L3jVBJ5HNSZro13xlfX8 GF4bvaRYOT9HyuxXKMFO5ON098GR8nduFWCKYkmTm93CAR+QerfJj/qDy2cW5p6EmK25 9klaTt2xR6k3M+7tdw2JLUZ0jHk4Wur/2gzdFJ51V9mNrwFsxlxc1nHWzEhbhbJsCzpB ASwon3/unSuW2smzgIYcL1qCyc2PzevCV9mtKrwAA4RCFkt4J+/H8dcNPG2SFX/p01i/ IYYQ== X-Gm-Message-State: AOAM533WRihMKuw+AhIpsQYJMFF92fVdkB2xxPK5I/CtYK8xiMI481gy fx4gpz8HfQ6cYbZIx3h5RTHWgzp+zihoYq1P2VpDGIEhNiVDv5fU8oNb/260KfDQtOe/lP922jP G94WVvZxtmNosze2D0fybVQKj X-Received: by 2002:a37:6149:: with SMTP id v70mr16390916qkb.188.1604352438283; Mon, 02 Nov 2020 13:27:18 -0800 (PST) X-Google-Smtp-Source: ABdhPJx1BX1HFiblt+dhs6jzM4c/cLeLDSoTUTDjBFSoL2oLT5fjFR9ZaovZujpYbCENwpT9VuNZRQ== X-Received: by 2002:a37:6149:: with SMTP id v70mr16390897qkb.188.1604352438101; Mon, 02 Nov 2020 13:27:18 -0800 (PST) Received: from xz-x1 (bras-vprn-toroon474qw-lp130-20-174-93-89-196.dsl.bell.ca. [174.93.89.196]) by smtp.gmail.com with ESMTPSA id f21sm5206440qkl.131.2020.11.02.13.27.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Nov 2020 13:27:17 -0800 (PST) Date: Mon, 2 Nov 2020 16:27:15 -0500 From: Peter Xu To: Ben Gardon Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org, Paolo Bonzini , Andrew Jones , Peter Shier , Sean Christopherson , Thomas Huth , Peter Feiner Subject: Re: [PATCH 3/5] KVM: selftests: Simplify demand_paging_test with timespec_diff_now Message-ID: <20201102212715.GD20600@xz-x1> References: <20201027233733.1484855-1-bgardon@google.com> <20201027233733.1484855-4-bgardon@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20201027233733.1484855-4-bgardon@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Oct 27, 2020 at 04:37:31PM -0700, Ben Gardon wrote: > Add a helper function to get the current time and return the time since > a given start time. Use that function to simplify the timekeeping in the > demand paging test. Nit: timespec_diff_now() sounds less charming than timespec_elapsed() to me... "diff_now" is longer, and it also does not show positive/negative of the results (which in this case should always be end-start). "elapsed" should always mean something positive. With/Without the change above: Reviewed-by: Peter Xu -- Peter Xu