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=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 CAE46C433FF for ; Thu, 8 Aug 2019 20:41:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A2897217F4 for ; Thu, 8 Aug 2019 20:41:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390322AbfHHUlp (ORCPT ); Thu, 8 Aug 2019 16:41:45 -0400 Received: from foss.arm.com ([217.140.110.172]:38420 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390148AbfHHUlp (ORCPT ); Thu, 8 Aug 2019 16:41:45 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 56D1A1596; Thu, 8 Aug 2019 13:41:44 -0700 (PDT) Received: from mammon-tx2.austin.arm.com (mammon-tx2.austin.arm.com [10.118.30.64]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 45EBB3F694; Thu, 8 Aug 2019 13:41:44 -0700 (PDT) From: Jeremy Linton To: linux-arm-kernel@lists.infradead.org Cc: linux-acpi@vger.kernel.org, catalin.marinas@arm.com, will@kernel.org, rjw@rjwysocki.net, lenb@kernel.org, lorenzo.pieralisi@arm.com, sudeep.holla@arm.com, rric@kernel.org, Jeremy Linton Subject: [PATCH v4 0/2] arm64/PPTT ACPI 6.3 thread flag support Date: Thu, 8 Aug 2019 15:40:05 -0500 Message-Id: <20190808204007.30110-1-jeremy.linton@arm.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org ACPI 6.3 adds a flag to the CPU node to indicate whether the given CPU is a thread. Add a function to return that information for a given linux logical CPU and then utilize it while building the arm64 topology. v4->v5: Add Sudeep's Reviewed tag Trivial comment tweaks Move is_threaded logic from parse_acpi_topology() to apci_cpu_is_threaded() v3->v4: Remove table revision cache as this code path is only called during boot and there aren't any indications that it presents a perf issue. Rebase to 5.3 v2->v3: Clarify and tweak the return from check_acpi_cpu_flag() Cache the PPTT table revision to avoid repeat acpi_table_get/put calls in the case of missing or old PPTT tables. v1->v2: Return ENOENT instead on ENONET. Jeremy Linton (2): ACPI/PPTT: Add support for ACPI 6.3 thread flag arm64: topology: Use PPTT to determine if PE is a thread arch/arm64/kernel/topology.c | 19 ++++++++++--- drivers/acpi/pptt.c | 53 +++++++++++++++++++++++++++++++++++- include/linux/acpi.h | 5 ++++ 3 files changed, 72 insertions(+), 5 deletions(-) -- 2.21.0