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=-2.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 B8FA5C433E6 for ; Mon, 15 Mar 2021 17:21:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 85CB861494 for ; Mon, 15 Mar 2021 17:21:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231990AbhCORUe (ORCPT ); Mon, 15 Mar 2021 13:20:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60492 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230452AbhCORUL (ORCPT ); Mon, 15 Mar 2021 13:20:11 -0400 Received: from mail-io1-xd31.google.com (mail-io1-xd31.google.com [IPv6:2607:f8b0:4864:20::d31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7F6B4C06174A; Mon, 15 Mar 2021 10:20:11 -0700 (PDT) Received: by mail-io1-xd31.google.com with SMTP id w11so8447286iol.13; Mon, 15 Mar 2021 10:20:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:reply-to:from:date:message-id :subject:to:cc; bh=xFtEHSj/3JJ9WJjd/AY+kzYWQRP/x6OzCgX6GLQN9pE=; b=varF+Xc7I1jiWPNdI/a1mt5wK9UASoUiMGBKOBM0YkSc0ITiVZeIs3QtUv8w76YaMJ oGz4U2eSn8JgcGk/4Z5vBHAedDCFxZAeUYmZ1GpHwqHDBjSpw6CWVmpunv4VUZpc2+dS h9ESPv6Lqr/smgJj8ZapKjQcHJKfmdTGCeMFHx/6tYueqUAaVhaLwawnYyIod9LMMBy/ flWFsWomHrWBELEc+uLrJJulEHjanJ35JpLm01ctOE6s+qDkJn1yDD1djiPQiXzGuN75 G0ElaQiuVXGlz6sVQVlobylkx994xLc+/+UPEjF6dRiFvNcliYW9gA64l4dGlFDlX/ny +bSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:reply-to :from:date:message-id:subject:to:cc; bh=xFtEHSj/3JJ9WJjd/AY+kzYWQRP/x6OzCgX6GLQN9pE=; b=dxWKaP7jKmOq3JAEZ5H5jvEbEyD34lCZeI+mH/8WmyIVxLH3DMkD2JFaGPJLTf3dda 0W/6dhyXk0NVCvPucjc0y/MWj2Z3BiEONVGDNidU9EN9zIyB8UqvGB0s5UY73+1XJDEu 5spenPz0WenvNWCBtSWc6+lZbGN54mqKJ4v45pWx9ffoIpiWIist0Fy5/6kkaUOdsLnN nXObZ+hcl/vaHpUVg+hCHGtaNO+Jnr/azAnMCwOMbOW8LtB+l2TjmOfmbtnxEjR8kkYA /Wx0lLFdaQsKPS8OtZXL0iJ2gefaPKQLhaA4a59rgIb/pUVQqlsrAygBh4Ti+gF/r5LD dTGw== X-Gm-Message-State: AOAM531y+GgMzlfgTapKtS8wTPUeF3ZYaZTRwr8m9qR2VJXT/Qs/zm3j nD9sAQSNwEv9bYoaF0C3EJG7Bjv/iWYBPcVII0w= X-Google-Smtp-Source: ABdhPJzXzL86uydQrDLaeOiipIrpIXWQrnHVjwnXO0U3T5Yyp0Qe8rxyoS428+RBkplx14QX57LRwfcIqxWIZMDOvzE= X-Received: by 2002:a02:7822:: with SMTP id p34mr10492460jac.65.1615828810877; Mon, 15 Mar 2021 10:20:10 -0700 (PDT) MIME-Version: 1.0 References: <20210313084923.GA16144@zn.tnic> <20210313121541.GC16144@zn.tnic> <20210313124919.GD16144@zn.tnic> <20210313132927.GF16144@zn.tnic> <20210315171516.GG20497@zn.tnic> In-Reply-To: <20210315171516.GG20497@zn.tnic> Reply-To: sedat.dilek@gmail.com From: Sedat Dilek Date: Mon, 15 Mar 2021 18:19:34 +0100 Message-ID: Subject: Re: [PATCH 0/2] x86: Remove ideal_nops[] To: Borislav Petkov Cc: Peter Zijlstra , x86@kernel.org, rostedt@goodmis.org, hpa@zytor.com, torvalds@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-toolchains@vger.kernel.org, jpoimboe@redhat.com, alexei.starovoitov@gmail.com, mhiramat@kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-toolchains@vger.kernel.org On Mon, Mar 15, 2021 at 6:15 PM Borislav Petkov wrote: > > On Mon, Mar 15, 2021 at 06:04:41PM +0100, Sedat Dilek wrote: > > Here some fresh numbers: > > Lemme paste my previous reply which still holds true here: > > "There's a reason I have -s for silent in the build - printing output > during the build creates a *lot* of variance. And you have excessive > printing with V=1 and KBUILD_VERBOSE=1. > I have this for diagnostic reasons. Yes, I can drop V=1 and KBUILD_VERBOSE=1. This is a good idea for a fast build. > Also, you need to repeat those workloads a couple of times - one is not > enough. That's why I have --repeat 5 in there. > > Also, you need --pre=/root/bin/pre-build-kernel.sh where that script is: > > --- > #!/bin/bash > echo $0 > > make -s clean > echo 3 > /proc/sys/vm/drop_caches > --- > > so that you can avoid pagecache influence." > With my next build I try to apply this. - Sedat -