From patchwork Thu Apr 16 05:47:41 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Giovanni Gherdovich X-Patchwork-Id: 212289 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=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT 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 DAB3CC352BE for ; Thu, 16 Apr 2020 05:48:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C5707214AF for ; Thu, 16 Apr 2020 05:48:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406805AbgDPFsQ (ORCPT ); Thu, 16 Apr 2020 01:48:16 -0400 Received: from mx2.suse.de ([195.135.220.15]:38370 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2405910AbgDPFsM (ORCPT ); Thu, 16 Apr 2020 01:48:12 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id E8098ACAE; Thu, 16 Apr 2020 05:48:06 +0000 (UTC) From: Giovanni Gherdovich To: Srinivas Pandruvada , Thomas Gleixner , Ingo Molnar , Peter Zijlstra , Borislav Petkov , Len Brown , "Rafael J . Wysocki" Cc: x86@kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Mel Gorman , Doug Smythies , Like Xu , Neil Rickert , Chris Wilson , Giovanni Gherdovich Subject: [PATCH 0/4] Frequency invariance fixes for x86 Date: Thu, 16 Apr 2020 07:47:41 +0200 Message-Id: <20200416054745.740-1-ggherdovich@suse.cz> X-Mailer: git-send-email 2.16.4 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Patches 1-3 address bugs in the current frequency invariance support for x86, including the incompatibility with cpu0 hotplug reported by Chris Wilson at https://lore.kernel.org/lkml/158556634294.3228.4889951961483021094@build.alporthouse.com/ and the issue with CPUs that have less than 4 cores pointed out earlier today by Like Xu at https://lore.kernel.org/lkml/20200416021210.170736-1-like.xu@linux.intel.com/ Patch 4 is a minor code reorganization. Giovanni Gherdovich (3): x86, sched: Bail out of frequency invariance if base frequency is unknown x86, sched: Account for CPUs with less than 4 cores in freq. invariance x86, sched: Move check for CPU type to caller function Peter Zijlstra (Intel) (1): x86, sched: Don't enable static key when starting secondary CPUs arch/x86/kernel/smpboot.c | 47 +++++++++++++++++++++++++++++++++-------------- 1 file changed, 33 insertions(+), 14 deletions(-)