[Qemu-devel] [PATCH 1/2][RFC] qom: introduce cpu QOM hierarchy tree /machine/node/socket/core/thread/cpu.

[Chen Fan <chen.fan.fnst@cn.fujitsu.com>]

Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
---
 include/qom/node.h |  66 +++++++++++++++++++++++
 qom/Makefile.objs  |   2 +-
 qom/node.c         | 156 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 223 insertions(+), 1 deletion(-)
 create mode 100644 include/qom/node.h
 create mode 100644 qom/node.c

diff --git a/include/qom/node.h b/include/qom/node.h
new file mode 100644
index 0000000..6c948ec
--- /dev/null
+++ b/include/qom/node.h
@@ -0,0 +1,66 @@
+/*
+ * QEMU System Emulator
+ *
+ * Copyright (c) 2013 Fujitsu Ltd.
+ * Author: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "hw/qdev-core.h"
+
+#define TYPE_NODE   "node"
+#define TYPE_SOCKET "socket"
+#define TYPE_CORE   "core"
+#define TYPE_THREAD "thread"
+
+#define NODE(obj) OBJECT_CHECK(NodeState, (obj), TYPE_NODE)
+
+#define SOCKET(obj) OBJECT_CHECK(SocketState, (obj), TYPE_SOCKET)
+
+#define CORE(obj) OBJECT_CHECK(CoreState, (obj), TYPE_CORE)
+
+#define THREAD(obj) OBJECT_CHECK(ThreadState, (obj), TYPE_THREAD)
+
+Object *object_get_thread_from_index(int64_t cpu_index);
+
+typedef struct ThreadState {
+    /*< private >*/
+    Object parent_obj;
+    /*< public >*/
+    CPUState **cpu;
+} ThreadState;
+
+typedef struct CoreState {
+    /*< private >*/
+    Object parent_obj;
+    /*< public >*/
+} CoreState;
+
+typedef struct SocketState {
+    /*< private >*/
+    Object parent_obj;
+    /*< public >*/
+} SocketState;
+
+typedef struct NodeState {
+    /*< private >*/
+    Object parent_obj;
+    /*< public >*/
+} NodeState;
diff --git a/qom/Makefile.objs b/qom/Makefile.objs
index 985003b..5863919 100644
--- a/qom/Makefile.objs
+++ b/qom/Makefile.objs
@@ -1,3 +1,3 @@
 common-obj-y = object.o container.o qom-qobject.o
-common-obj-y += cpu.o
+common-obj-y += cpu.o node.o
 common-obj-y += object_interfaces.o
diff --git a/qom/node.c b/qom/node.c
new file mode 100644
index 0000000..a335992
--- /dev/null
+++ b/qom/node.c
@@ -0,0 +1,156 @@
+/*
+ * QEMU System Emulator
+ *
+ * Copyright (c) 2013 Fujitsu Ltd.
+ * Author: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "qom/object.h"
+#include "qemu/module.h"
+#include "hw/hw.h"
+#include "sysemu/cpus.h"
+#include "sysemu/sysemu.h"
+#include "qom/cpu.h"
+#include "qom/node.h"
+
+Object *object_get_thread_from_index(int64_t cpu_index)
+{
+    gchar *path;
+    Object *thread;
+    int nodes, cpus_pre_nodes, smp_sockets;
+    unsigned node_id, socket_id, core_id, thread_id;
+    unsigned core_index, socket_index;
+
+    nodes = nb_numa_nodes ? nb_numa_nodes : 1;
+    cpus_pre_nodes = max_cpus / nodes;
+    smp_sockets = cpus_pre_nodes / (smp_cores * smp_threads);
+
+    core_index = cpu_index / smp_threads;
+    thread_id = cpu_index % smp_threads;
+    socket_index = core_index / smp_cores;
+    core_id = core_index % smp_cores;
+    node_id = socket_index / smp_sockets;
+    socket_id = socket_index % smp_sockets;
+
+    path = g_strdup_printf("/machine/node[%d]/socket[%d]/core[%d]/thread[%d]",
+                           node_id, socket_id, core_id, thread_id);
+    thread = object_resolve_path(path, NULL);
+    g_free(path);
+
+    return thread;
+}
+
+static void thread_initfn(Object *obj)
+{
+    ThreadState *ts = THREAD(obj);
+
+    ts->cpu = g_malloc0(sizeof(CPUState *));
+
+    object_ref(OBJECT(ts->cpu));
+    object_property_add_link(obj, "cpu", TYPE_CPU, (Object **)ts->cpu, NULL);
+}
+
+static const TypeInfo thread_type_info = {
+    .name = TYPE_THREAD,
+    .parent = TYPE_OBJECT,
+    .instance_size = sizeof(ThreadState),
+    .instance_init = thread_initfn,
+};
+
+static void core_initfn(Object *obj)
+{
+    int i;
+    Object *thread_obj;
+    gchar *thread_name;
+
+    for (i = 0; i < smp_threads; i++) {
+        thread_obj = object_new(TYPE_THREAD);
+        thread_name = g_strdup_printf("thread[%" PRIi32 "]", i);
+        object_property_add_child(obj, thread_name, thread_obj, NULL);
+        g_free(thread_name);
+    }
+}
+
+static const TypeInfo core_type_info = {
+    .name = TYPE_CORE,
+    .parent = TYPE_OBJECT,
+    .instance_size = sizeof(CoreState),
+    .instance_init = core_initfn,
+};
+
+static void socket_initfn(Object *obj)
+{
+    int i;
+    Object *core_obj;
+    gchar *core_name;
+
+    for (i = 0; i < smp_cores; i++) {
+        core_obj = object_new(TYPE_CORE);
+        core_name = g_strdup_printf("core[%" PRIi32 "]", i);
+        object_property_add_child(obj, core_name, core_obj, NULL);
+        g_free(core_name);
+    }
+}
+
+static const TypeInfo socket_type_info = {
+    .name = TYPE_SOCKET,
+    .parent = TYPE_OBJECT,
+    .instance_size = sizeof(SocketState),
+    .instance_init = socket_initfn,
+};
+
+static void node_initfn(Object *obj)
+{
+    int smp_sockets, sockets_pre_node, nodes;
+    int i;
+    Object *socket_obj;
+    gchar *socket_name;
+
+    smp_sockets = max_cpus / (smp_cores * smp_threads);
+
+    nodes = nb_numa_nodes ? nb_numa_nodes : 1;
+
+    sockets_pre_node = smp_sockets / nodes;
+
+    for (i = 0; i < sockets_pre_node; i++) {
+        socket_obj = object_new(TYPE_SOCKET);
+        socket_name = g_strdup_printf("socket[%" PRIi32 "]", i);
+        object_property_add_child(obj, socket_name, socket_obj, NULL);
+        g_free(socket_name);
+    }
+}
+
+static const TypeInfo node_type_info = {
+    .name = TYPE_NODE,
+    .parent = TYPE_OBJECT,
+    .instance_size = sizeof(NodeState),
+    .instance_init = node_initfn,
+};
+
+static void node_register_types(void)
+{
+    type_register_static(&node_type_info);
+    type_register_static(&socket_type_info);
+    type_register_static(&core_type_info);
+    type_register_static(&thread_type_info);
+}
+
+type_init(node_register_types)
-- 
1.8.1.4