From patchwork Fri Mar 11 04:54:34 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bharata B Rao X-Patchwork-Id: 8562091 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id CA76C9F46A for ; Fri, 11 Mar 2016 04:55:34 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 046812035E for ; Fri, 11 Mar 2016 04:55:34 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E67B52035D for ; Fri, 11 Mar 2016 04:55:32 +0000 (UTC) Received: from localhost ([::1]:52697 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aeF6q-00053q-DM for patchwork-qemu-devel@patchwork.kernel.org; Thu, 10 Mar 2016 23:55:32 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37831) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aeF6W-0004sM-Q9 for qemu-devel@nongnu.org; Thu, 10 Mar 2016 23:55:15 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aeF6T-0004BB-DR for qemu-devel@nongnu.org; Thu, 10 Mar 2016 23:55:12 -0500 Received: from e28smtp08.in.ibm.com ([125.16.236.8]:45264) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aeF6S-00049T-OR for qemu-devel@nongnu.org; Thu, 10 Mar 2016 23:55:09 -0500 Received: from localhost by e28smtp08.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Fri, 11 Mar 2016 10:25:02 +0530 X-IBM-Helo: d28relay04.in.ibm.com X-IBM-MailFrom: bharata@linux.vnet.ibm.com X-IBM-RcptTo: qemu-ppc@nongnu.org;qemu-devel@nongnu.org Received: from d28av05.in.ibm.com (d28av05.in.ibm.com [9.184.220.67]) by d28relay04.in.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u2B4skJ434340962; Fri, 11 Mar 2016 10:24:46 +0530 Received: from d28av05.in.ibm.com (localhost [127.0.0.1]) by d28av05.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u2B4t0eJ021906; Fri, 11 Mar 2016 10:25:01 +0530 Received: from bharata.in.ibm.com ([9.77.192.47]) by d28av05.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id u2B4se3S021136; Fri, 11 Mar 2016 10:24:58 +0530 From: Bharata B Rao To: qemu-devel@nongnu.org Date: Fri, 11 Mar 2016 10:24:34 +0530 Message-Id: <1457672078-17307-6-git-send-email-bharata@linux.vnet.ibm.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1457672078-17307-1-git-send-email-bharata@linux.vnet.ibm.com> References: <1457672078-17307-1-git-send-email-bharata@linux.vnet.ibm.com> X-TM-AS-MML: disable x-cbid: 16031104-0029-0000-0000-00000B783CDD X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 125.16.236.8 Cc: mjrosato@linux.vnet.ibm.com, thuth@redhat.com, pkrempa@redhat.com, ehabkost@redhat.com, aik@ozlabs.ru, Bharata B Rao , armbru@redhat.com, agraf@suse.de, borntraeger@de.ibm.com, qemu-ppc@nongnu.org, pbonzini@redhat.com, imammedo@redhat.com, mdroth@linux.vnet.ibm.com, afaerber@suse.de, david@gibson.dropbear.id.au Subject: [Qemu-devel] [RFC PATCH v2 5/9] cpu: Abstract CPU core type X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add an abstract CPU core type that could be used by machines that want to define and hotplug CPUs in core granularity. Signed-off-by: Bharata B Rao Reviewed-by: David Gibson --- hw/cpu/Makefile.objs | 1 + hw/cpu/core.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++ include/hw/cpu/core.h | 31 ++++++++++++++++++ 3 files changed, 119 insertions(+) create mode 100644 hw/cpu/core.c create mode 100644 include/hw/cpu/core.h diff --git a/hw/cpu/Makefile.objs b/hw/cpu/Makefile.objs index 0954a18..942a4bb 100644 --- a/hw/cpu/Makefile.objs +++ b/hw/cpu/Makefile.objs @@ -2,4 +2,5 @@ obj-$(CONFIG_ARM11MPCORE) += arm11mpcore.o obj-$(CONFIG_REALVIEW) += realview_mpcore.o obj-$(CONFIG_A9MPCORE) += a9mpcore.o obj-$(CONFIG_A15MPCORE) += a15mpcore.o +obj-y += core.o diff --git a/hw/cpu/core.c b/hw/cpu/core.c new file mode 100644 index 0000000..3faf53d --- /dev/null +++ b/hw/cpu/core.c @@ -0,0 +1,87 @@ +/* + * CPU core abstract device + * + * Copyright (C) 2016 Bharata B Rao + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#include "hw/cpu/core.h" +#include "qapi/visitor.h" +#include "sysemu/cpus.h" + +static void core_prop_get_core(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + CPUCore *core = CPU_CORE(obj); + int64_t value = core->core; + + visit_type_int(v, name, &value, errp); +} + +static void core_prop_set_core(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + CPUCore *core = CPU_CORE(obj); + Error *local_err = NULL; + int64_t value; + + visit_type_int(v, name, &value, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + core->core = value; +} + +static void core_prop_get_threads(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + CPUCore *core = CPU_CORE(obj); + int64_t value = core->threads; + + visit_type_int(v, name, &value, errp); +} + +static void core_prop_set_threads(Object *obj, Visitor *v, const char *name, + void *opaque, Error **errp) +{ + CPUCore *core = CPU_CORE(obj); + Error *local_err = NULL; + int64_t value; + + visit_type_int(v, name, &value, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + core->threads = value; +} + +static void cpu_core_instance_init(Object *obj) +{ + CPUCore *core = CPU_CORE(obj); + + object_property_add(obj, "core", "int", core_prop_get_core, + core_prop_set_core, NULL, NULL, NULL); + object_property_add(obj, "threads", "int", core_prop_get_threads, + core_prop_set_threads, NULL, NULL, NULL); + core->threads = smp_threads; +} + +static const TypeInfo cpu_core_type_info = { + .name = TYPE_CPU_CORE, + .parent = TYPE_DEVICE, + .abstract = true, + .instance_size = sizeof(CPUCore), + .instance_init = cpu_core_instance_init, +}; + +static void cpu_core_register_types(void) +{ + type_register_static(&cpu_core_type_info); +} + +type_init(cpu_core_register_types) diff --git a/include/hw/cpu/core.h b/include/hw/cpu/core.h new file mode 100644 index 0000000..a2a5a04 --- /dev/null +++ b/include/hw/cpu/core.h @@ -0,0 +1,31 @@ +/* + * CPU core abstract device + * + * Copyright (C) 2016 Bharata B Rao + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#ifndef HW_CPU_CORE_H +#define HW_CPU_CORE_H + +#include "qemu/osdep.h" +#include "hw/qdev.h" + +#define TYPE_CPU_CORE "cpu-core" + +#define CPU_CORE(obj) \ + OBJECT_CHECK(CPUCore, (obj), TYPE_CPU_CORE) + +typedef struct CPUCore { + /*< private >*/ + DeviceState parent_obj; + + /*< public >*/ + int core; + int threads; +} CPUCore; + +#define CPU_CORE_PROP_CORE "core" + +#endif