Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758316AbbLBOMe (ORCPT ); Wed, 2 Dec 2015 09:12:34 -0500 Received: from foss.arm.com ([217.140.101.70]:42864 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932283AbbLBOK5 (ORCPT ); Wed, 2 Dec 2015 09:10:57 -0500 From: Sudeep Holla To: linux-acpi@vger.kernel.org, "Rafael J. Wysocki" Cc: Sudeep Holla , linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org, x86@kernel.org, Al Stone , Lorenzo Pieralisi , Mahesh Sivasubramanian , Ashwin Chaugule , Prashanth Prakash Subject: [PATCH v3 1/5] ACPI / processor : add support for ACPI0010 processor container Date: Wed, 2 Dec 2015 14:10:42 +0000 Message-Id: <1449065446-26115-2-git-send-email-sudeep.holla@arm.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1449065446-26115-1-git-send-email-sudeep.holla@arm.com> References: <1449065446-26115-1-git-send-email-sudeep.holla@arm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2245 Lines: 67 ACPI 6.0 adds support for optional processor container device which may contain child objects that are either processor devices or other processor containers. This allows representing hierarchical processor topologies. It is declared using the _HID of ACPI0010. It is an abstract container used to represent CPU topology and should not be used to hotplug purposes. This patch enables the support for these ACPI processor containers and ensures the generic container/module devices are not created for them. Cc: "Rafael J. Wysocki" Signed-off-by: Sudeep Holla --- drivers/acpi/acpi_processor.c | 17 +++++++++++++++++ include/acpi/processor.h | 1 + 2 files changed, 18 insertions(+) diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c index 6979186dbd4b..b5e54f2da53d 100644 --- a/drivers/acpi/acpi_processor.c +++ b/drivers/acpi/acpi_processor.c @@ -514,7 +514,24 @@ static struct acpi_scan_handler processor_handler = { }, }; +static int acpi_processor_container_attach(struct acpi_device *dev, + const struct acpi_device_id *id) +{ + return 1; +} + +static const struct acpi_device_id processor_container_ids[] = { + { ACPI_PROCESSOR_CONTAINER_HID, }, + { } +}; + +static struct acpi_scan_handler processor_container_handler = { + .ids = processor_container_ids, + .attach = acpi_processor_container_attach, +}; + void __init acpi_processor_init(void) { acpi_scan_add_handler_with_hotplug(&processor_handler, "processor"); + acpi_scan_add_handler(&processor_container_handler); } diff --git a/include/acpi/processor.h b/include/acpi/processor.h index 07fb100bcc68..54d7860cac11 100644 --- a/include/acpi/processor.h +++ b/include/acpi/processor.h @@ -9,6 +9,7 @@ #define ACPI_PROCESSOR_CLASS "processor" #define ACPI_PROCESSOR_DEVICE_NAME "Processor" #define ACPI_PROCESSOR_DEVICE_HID "ACPI0007" +#define ACPI_PROCESSOR_CONTAINER_HID "ACPI0010" #define ACPI_PROCESSOR_BUSY_METRIC 10 -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/