Received: by 2002:a05:6a10:9848:0:0:0:0 with SMTP id x8csp3532758pxf; Mon, 15 Mar 2021 11:40:16 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzfFmlA+FKMskpT4YB4Tslq9ggfjei7OIFOm5pxsFW9diNuJmYUkMUtflOkiqx8A7tVMPoi X-Received: by 2002:a17:906:8546:: with SMTP id h6mr24730309ejy.23.1615833616063; Mon, 15 Mar 2021 11:40:16 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1615833616; cv=none; d=google.com; s=arc-20160816; b=q/rfWTe/wb32/3BrCpr0MawX82ORP4VacH16tKrv20K69xXqFNWZxryY72GliEP8W8 l9SuxzChgi6nrufTvPOuDvazl3QwUSXfGINo0dnVQ7o+kUvsQ/L5Fb7OA1x/rL9RzNsx jkv2KnMTCUUTeCrvuSz0dn0ZETEmhOgWo3iZbYnDO0VF9AMKRrNwXsMWyksROlTxw810 DXP6+bzQFeyWko96mxS5hd/cH1tm4h6/eImYvQCAElwfLBZdFWP3KsHr1fFCnNnPPhPd OvKi66ExuQCcFsxLhNeEHLVCvRmmTVGzBu9OA9bVldrllkqFMP/iZ//hxtW1T1Kkuizb eSgw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=zHC3blqSNPKWJ830IEWlMeLd4dUxTY7L0fyE2191Pxk=; b=KXaJb9Uio5udrXSn+F16Bp1I+W+FG1TxCeY81OPFLpMIK1i7ZTFf7yF0lHJ2hI29OT XQxF+Snm9dE43iJWmPwqP91YX5LkfS24IAwsfrGkqcw9vYtWfBCI6rQYUM/U3rx4zMje 52z9NzW2ykV4OOM1AtJG/7JJYpoO1CDyBgIFAPULLfolOSL/j8yqfUdS6GNr7zqIPGHo J4Zy8/40Blm0UYrNo/tUn4jr48K6OO3dwd0qqTCYgnYms8qwUpMmAVo4Z50rEnsrsCcH PeLg+tEIzQrGt/5us/DXfnrF4MVXIPry2g+VhCGdrMV83FRbcvVQfUH7ZjPX1DIccQbc Waww== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=PE+5nFQH; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id dc3si12142280edb.57.2021.03.15.11.39.53; Mon, 15 Mar 2021 11:40:16 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=PE+5nFQH; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232851AbhCORXr (ORCPT + 99 others); Mon, 15 Mar 2021 13:23:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32986 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233881AbhCORXg (ORCPT ); Mon, 15 Mar 2021 13:23:36 -0400 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 28D88C06174A; Mon, 15 Mar 2021 10:23:36 -0700 (PDT) Received: from zn.tnic (p200300ec2f0786001d9615583ace417a.dip0.t-ipconnect.de [IPv6:2003:ec:2f07:8600:1d96:1558:3ace:417a]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 78B0B1EC01E0; Mon, 15 Mar 2021 18:23:34 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1615829014; 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: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=zHC3blqSNPKWJ830IEWlMeLd4dUxTY7L0fyE2191Pxk=; b=PE+5nFQHuWhAEeZDZ9lgcQPQnLK9WDotyFUN6wwIp3nffXCY9VxzJw7Q53LCcyHn9iNfez QiNbUE1CuGYF0lS+JcXSQNPH/Z9Dvq8I8AYuWrHGQh5UTNART/Nu1rjBU2C3vWu914PGlo 8NHdRMoGVAQHcb/Cm6KjnYvJGMxJaGQ= Date: Mon, 15 Mar 2021 18:23:37 +0100 From: Borislav Petkov To: Sedat Dilek 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 Subject: Re: [PATCH 0/2] x86: Remove ideal_nops[] Message-ID: <20210315172337.GH20497@zn.tnic> References: <20210313121541.GC16144@zn.tnic> <20210313124919.GD16144@zn.tnic> <20210313132927.GF16144@zn.tnic> <20210315171516.GG20497@zn.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 15, 2021 at 06:19:34PM +0100, Sedat Dilek wrote: > With my next build I try to apply this. Your perf tool command should look something like this: perf stat --repeat 5 --sync --pre=/root/bin/pre-build-kernel.sh -- make -s -j9 LLVM=1 LLVM_IAS=1 bzImage Also, needless to say, your box needs to not run anything else during the measurement. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette