From patchwork Tue Jan 12 21:42:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Gardon X-Patchwork-Id: 12014877 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=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT,USER_IN_DEF_DKIM_WL 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 3C770C43333 for ; Tue, 12 Jan 2021 21:44:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 06BD523123 for ; Tue, 12 Jan 2021 21:44:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390785AbhALVoX (ORCPT ); Tue, 12 Jan 2021 16:44:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46500 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388554AbhALVoW (ORCPT ); Tue, 12 Jan 2021 16:44:22 -0500 Received: from mail-pj1-x104a.google.com (mail-pj1-x104a.google.com [IPv6:2607:f8b0:4864:20::104a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 61C6EC0617BB for ; Tue, 12 Jan 2021 13:43:01 -0800 (PST) Received: by mail-pj1-x104a.google.com with SMTP id hg11so2311242pjb.2 for ; Tue, 12 Jan 2021 13:43:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=9D60d6a+RHIMvsjgK7MdID+ZQQq9agXyNVhU1xi0rGw=; b=EBPyU4IxquAka6tndKBXi38jGYe9Wc5xSLXCMEuPUAMfc8ERikwZ7Q+5Vaine1yj/s Y94PrhvabXm92lZISmP5lLjXeQDYdfAs7G/6TwGny2haIsc7ifisvoH3ZVgsIao+e0VC ISI+5uZlG5oW/Q+z+GUDj2EXQmC8KPkyDdz+xoh/vppfLBZ0+YXkP/p7jN02Aq6M/C7s AFkBrgvhtyP4AtWcZPtuJuX2dbEtnb5hgqWYTZgHx1bbkMyQF3jQWImrbkzeQGeXKtjq i17XuZWixCsIt1YWWVafD70Pyc3ilK7b1o1bttscqEtXtupV2dQMg2X5k2qSX5kkNHnJ 5+/A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=9D60d6a+RHIMvsjgK7MdID+ZQQq9agXyNVhU1xi0rGw=; b=SBoiV296iD+w2cZ6e/FWOV9yoS6Gl9U1o/QXiBfimK6lxfvpuSKFOVE4qWmQN3kxuv RU74jFI/l/XbwrYXnT4ss0H8lnqyE/Gvn2H8Qb93tQNFHSAcvhLeGp9jz0hYCu7II7HL ijJyDd9AEQHvhLXKzfQhwcvm2iFi7wVshdXHTYSm8LD2sQ/bVrwhr/bdQQfcLm2+K7Uf exWZNjK27VHbjEUFIxZk3Z3954jRpG3MSeYQFDseMN6J7E8/JIMKe2Jx/ApqRcV/7WLT Z0FwlXuTluCycRPXEv4Ruhgntq4rx5Olhrre3DghkSA0ygPf/UfQE7q9xy5++Exja9jH RZJw== X-Gm-Message-State: AOAM530yN4w5xe+GZC6Ch6yOk5BEprYz6JYgZiP3e/tI71iZVzI9psxk MkBU1yGWJn4w7bxYXW6ipk/lNvEt7/uL X-Google-Smtp-Source: ABdhPJwDLHr7pwodvdrqC9F2QqiLJrBgP+QmgVRLQ9SkvNlPoxHoXuPwjuoAGKu3nulYpXd7GoIetAD+BhmY Sender: "bgardon via sendgmr" X-Received: from bgardon.sea.corp.google.com ([2620:15c:100:202:f693:9fff:fef4:a293]) (user=bgardon job=sendgmr) by 2002:a17:902:ba84:b029:dc:f27:dd4e with SMTP id k4-20020a170902ba84b02900dc0f27dd4emr943795pls.61.1610487780931; Tue, 12 Jan 2021 13:43:00 -0800 (PST) Date: Tue, 12 Jan 2021 13:42:49 -0800 In-Reply-To: <20210112214253.463999-1-bgardon@google.com> Message-Id: <20210112214253.463999-3-bgardon@google.com> Mime-Version: 1.0 References: <20210112214253.463999-1-bgardon@google.com> X-Mailer: git-send-email 2.30.0.284.gd98b1dd5eaa7-goog Subject: [PATCH 2/6] KVM: selftests: Avoid flooding debug log while populating memory From: Ben Gardon To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org Cc: Paolo Bonzini , Peter Xu , Andrew Jones , Peter Shier , Sean Christopherson , Thomas Huth , Jacob Xu , Makarand Sonare , Ben Gardon Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Peter Xu pointed out that a log message printed while waiting for the memory population phase of the dirty_log_perf_test will flood the debug logs as there is no delay after printing the message. Since the message does not provide much value anyway, remove it. Reviewed-by: Jacob Xu Signed-off-by: Ben Gardon Reviewed-by: Thomas Huth --- tools/testing/selftests/kvm/dirty_log_perf_test.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/tools/testing/selftests/kvm/dirty_log_perf_test.c b/tools/testing/selftests/kvm/dirty_log_perf_test.c index 16efe6589b43..15a9c45bdb5f 100644 --- a/tools/testing/selftests/kvm/dirty_log_perf_test.c +++ b/tools/testing/selftests/kvm/dirty_log_perf_test.c @@ -146,8 +146,7 @@ static void run_test(enum vm_guest_mode mode, void *arg) /* Allow the vCPU to populate memory */ pr_debug("Starting iteration %lu - Populating\n", iteration); while (READ_ONCE(vcpu_last_completed_iteration[vcpu_id]) != iteration) - pr_debug("Waiting for vcpu_last_completed_iteration == %lu\n", - iteration); + ; ts_diff = timespec_elapsed(start); pr_info("Populate memory time: %ld.%.9lds\n", @@ -171,9 +170,9 @@ static void run_test(enum vm_guest_mode mode, void *arg) pr_debug("Starting iteration %lu\n", iteration); for (vcpu_id = 0; vcpu_id < nr_vcpus; vcpu_id++) { - while (READ_ONCE(vcpu_last_completed_iteration[vcpu_id]) != iteration) - pr_debug("Waiting for vCPU %d vcpu_last_completed_iteration == %lu\n", - vcpu_id, iteration); + while (READ_ONCE(vcpu_last_completed_iteration[vcpu_id]) + != iteration) + ; } ts_diff = timespec_elapsed(start);