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=-0.8 required=3.0 tests=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 C9D13C1975A for ; Sun, 22 Mar 2020 23:18:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AA2EE2072D for ; Sun, 22 Mar 2020 23:18:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726962AbgCVXSW (ORCPT ); Sun, 22 Mar 2020 19:18:22 -0400 Received: from mga03.intel.com ([134.134.136.65]:35541 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726814AbgCVXSW (ORCPT ); Sun, 22 Mar 2020 19:18:22 -0400 IronPort-SDR: TQmMScp9Lc6nPGSoJh6N9ub3Q3PuDAKbvk2VSA9yjNxC2pWT1ckNUCQR+4FFY39HI+VuKPOSTe AVLVk9Mtf3rw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Mar 2020 16:18:21 -0700 IronPort-SDR: rTUNOvwITZGPd+WKcrPOiG/4qSYfi49vqmF1tMqSlVcd6PiUnkHrD1obms4uZeXb6/i8ctSt9f WeOfho2Kw0lA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,294,1580803200"; d="scan'208";a="447223183" Received: from tassilo.jf.intel.com (HELO tassilo.localdomain) ([10.7.201.21]) by fmsmga006.fm.intel.com with ESMTP; 22 Mar 2020 16:18:20 -0700 Received: by tassilo.localdomain (Postfix, from userid 1000) id CA321301779; Sun, 22 Mar 2020 16:18:20 -0700 (PDT) Date: Sun, 22 Mar 2020 16:18:20 -0700 From: Andi Kleen To: Peter Zijlstra Cc: Ian Rogers , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Kan Liang , linux-kernel@vger.kernel.org, Stephane Eranian Subject: Re: [PATCH v2] perf test x86: address multiplexing in rdpmc test Message-ID: <20200322231820.GB267978@tassilo.jf.intel.com> References: <20200321173710.127770-1-irogers@google.com> <20200322101848.GF2452@worktop.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200322101848.GF2452@worktop.programming.kicks-ass.net> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Here's something a little better. Much of it copied from linux/math64.h > and asm/div64.h. Not sure what the point is of micro optimizing a unit test? This is never run in production. -Andi