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=-3.8 required=3.0 tests=BAYES_00, 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 DB734C433E0 for ; Thu, 11 Mar 2021 17:54:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8449764FEC for ; Thu, 11 Mar 2021 17:54:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229711AbhCKRyY (ORCPT ); Thu, 11 Mar 2021 12:54:24 -0500 Received: from mga05.intel.com ([192.55.52.43]:20914 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229674AbhCKRyA (ORCPT ); Thu, 11 Mar 2021 12:54:00 -0500 IronPort-SDR: /tQoLqy82EHVZ1aa+ZF7r3tfSe1j0/6A4IiRgc2F2RkFZWREIyXJyskTfKpLVkuQcJ5LL5mwkE ZnSkE+FOMgUQ== X-IronPort-AV: E=McAfee;i="6000,8403,9920"; a="273750296" X-IronPort-AV: E=Sophos;i="5.81,241,1610438400"; d="scan'208";a="273750296" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Mar 2021 09:54:00 -0800 IronPort-SDR: 64UgRSIX4VMgkrugPuGUiNFfz65Vn36pTUWZBx0bo0JzBCa9B1V/q/xrnmk7Gqtm3C7BIrUqEa V90yKouwSvAg== X-IronPort-AV: E=Sophos;i="5.81,241,1610438400"; d="scan'208";a="521159112" Received: from tassilo.jf.intel.com ([10.54.74.11]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Mar 2021 09:54:00 -0800 Date: Thu, 11 Mar 2021 09:53:58 -0800 From: Andi Kleen To: Peter Zijlstra Cc: kan.liang@linux.intel.com, mingo@kernel.org, linux-kernel@vger.kernel.org, acme@kernel.org, tglx@linutronix.de, bp@alien8.de, namhyung@kernel.org, jolsa@redhat.com, yao.jin@linux.intel.com, alexander.shishkin@linux.intel.com, adrian.hunter@intel.com Subject: Re: [PATCH V2 16/25] perf/x86: Register hybrid PMUs Message-ID: <20210311175358.GF203350@tassilo.jf.intel.com> References: <1615394281-68214-1-git-send-email-kan.liang@linux.intel.com> <1615394281-68214-17-git-send-email-kan.liang@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > AFAICT we could register them all here. That instantly fixes that > CPU_STARTING / CPU_DEAD fail elsewhere in this patch. This would mean a system that only has Atoms or only has big cores would still show the other CPU's PMU. We expect those to exist. -Andi