From patchwork Thu Aug 8 20:40:05 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeremy Linton X-Patchwork-Id: 11084737 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 11DBD1398 for ; Thu, 8 Aug 2019 20:41:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0387428BB4 for ; Thu, 8 Aug 2019 20:41:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EC04728BBF; Thu, 8 Aug 2019 20:41:53 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 60E8028BB5 for ; Thu, 8 Aug 2019 20:41:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=vgTBIF/wXjRwGC5MLvU4tJ45gcApaUwPJxM+5cmz2y8=; b=j3VT1UJJYvXHoM d5OTNkHAd8ut5HE1cfb1Te9cLa+iTUgEWqCvbzgM+yU3nOsMad+fvFWh1HV3s93WV2zblxqRctZw9 8OQkLBV4RYxKyVYOVOas8ACeNxqx8y5L1sRJn1nmg1s4ECC6lAXe5yQQZo2ZdqDX3ZfaOviuYq7rQ gUrOdblwYVgKTaxy2REAY5Hmg0ykLaU2woMsHK2V39H/g2+1KxPudZY6H1JzpFZsUAqJCeHxWXMQQ IyVxSqMncjtTi4WzBiqMAc6Gj3DNJL1tpmL26eaK6s0tSdYz+Du/VYa1DJpUF03gTLUClyMlTQceI X9UeOm/JyBibftTlzH1g==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hvpEM-0005f6-PS; Thu, 08 Aug 2019 20:41:50 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hvpEJ-0005eB-KZ for linux-arm-kernel@lists.infradead.org; Thu, 08 Aug 2019 20:41:48 +0000 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 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190808_134147_720703_099B58F6 X-CRM114-Status: UNSURE ( 8.05 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lorenzo.pieralisi@arm.com, rric@kernel.org, catalin.marinas@arm.com, rjw@rjwysocki.net, Jeremy Linton , linux-acpi@vger.kernel.org, sudeep.holla@arm.com, will@kernel.org, lenb@kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP 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(-)