[patch] (resend) i386 sysfs Topology 2.5.45 (2/5)

From: Matthew Dobson (colpatch@us.ibm.com)
Date: Wed Oct 30 2002 - 21:31:47 EST


Forgot to clear out the patch at the bottom the first time. Resending
for clarity's sake.

Matthew Dobson wrote:
> Linus,
> This series of patches creates a directory-based Topology in sysfs
> (driverfs). This includes the per-node meminfo patch you wanted, as
> well as UP/SMP/NUMA topology.
> There were discussions between myself, Andrew, Rusty, and Patrick,
> and these are what we agreed on.
>
> (1/5) Core sysfs Topology:
> This patch creates the generic structures that are (will be)
> embedded in the per-arch structures. Also creates calls to
> register these generic structures (CPUs, MemBlks, & Nodes).
>
> Note that without arch-specific structures in which to embed
> these structures, and an arch-specific initialization routine,
> these functions/structures remain unused.
>
> (2/5) i386 sysfs Topology
> This patch creates the i386 specific files/functions/structures
> to implement driverfs Topology. These structures have the
> generic CPU/MemBlk/Node structures embedded in them.
>
> This patch also creates the arch-specific initialization routine
> to instantiate the topology.
>
> (3/5) per-node (NUMA) meminfo for sysfs Topology
> This patch adds code to DriverFS Topology to expose per-node
> memory statistics.
> This information is exposed via the nodeX/meminfo file.
>
> The patch also adds 2 helper functions to gather per-node memory
> info.
>
> (4/5) memblk_online_map
> This patch creates a memblk_online_map, much like
> cpu_online_map. It also creates the standard helper functions,
> ie: memblk_online(), num_online_memblks(), memblk_set_online(),
> memblk_set_offline().
>
> This is used by driverFS topology to keep track of which memory
> blocks are in the system and online.
>
> (5/5) node_online_map
> This patch creates a node_online_map, much like cpu_online_map.
> It also creates the standard helper functions, ie:
> node_online(), num_online_nodes(), node_set_online(),
> node_set_offline().
>
> This is used by driverFS topology to keep track of which Nodes
> are in the system and online.
>
> Cheers!
>
> -Matt

diff -Nur --exclude-from=/usr/src/.dontdiff linux-2.5.45-base/arch/i386/mach-generic/Makefile linux-2.5.45-arch_additions/arch/i386/mach-generic/Makefile
--- linux-2.5.45-base/arch/i386/mach-generic/Makefile Wed Oct 30 16:42:22 2002
+++ linux-2.5.45-arch_additions/arch/i386/mach-generic/Makefile Wed Oct 30 17:54:32 2002
@@ -4,6 +4,6 @@
 
 EXTRA_CFLAGS += -I../kernel
 
-obj-y := setup.o
+obj-y := setup.o topology.o
 
 include $(TOPDIR)/Rules.make
diff -Nur --exclude-from=/usr/src/.dontdiff linux-2.5.45-base/arch/i386/mach-generic/topology.c linux-2.5.45-arch_additions/arch/i386/mach-generic/topology.c
--- linux-2.5.45-base/arch/i386/mach-generic/topology.c Wed Dec 31 16:00:00 1969
+++ linux-2.5.45-arch_additions/arch/i386/mach-generic/topology.c Wed Oct 30 17:54:32 2002
@@ -0,0 +1,69 @@
+/*
+ * arch/i386/mach-generic/topology.c - Populate driverfs with topology information
+ *
+ * Written by: Matthew Dobson, IBM Corporation
+ * Original Code: Paul Dorwin, IBM Corporation, Patrick Mochel, OSDL
+ *
+ * Copyright (C) 2002, IBM Corp.
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Send feedback to <colpatch@us.ibm.com>
+ */
+#include <linux/init.h>
+#include <asm/cpu.h>
+
+struct i386_cpu cpu_devices[NR_CPUS];
+
+#ifdef CONFIG_NUMA
+#include <linux/mmzone.h>
+#include <asm/node.h>
+#include <asm/memblk.h>
+
+struct i386_node node_devices[MAX_NUMNODES];
+struct i386_memblk memblk_devices[MAX_NR_MEMBLKS];
+
+extern int numnodes;
+
+static int __init topology_init(void)
+{
+ int i;
+
+ for (i = 0; i < numnodes; i++)
+ arch_register_node(i);
+ for (i = 0; i < NR_CPUS; i++)
+ if (cpu_possible(i)) arch_register_cpu(i);
+ for (i = 0; i < numnodes; i++)
+ arch_register_memblk(i);
+ return 0;
+}
+
+#else /* !CONFIG_NUMA */
+
+static int __init topology_init(void)
+{
+ int i;
+
+ for (i = 0; i < NR_CPUS; i++)
+ if (cpu_possible(i)) arch_register_cpu(i);
+ return 0;
+}
+
+#endif /* CONFIG_NUMA */
+
+subsys_initcall(topology_init);
diff -Nur --exclude-from=/usr/src/.dontdiff linux-2.5.45-base/include/asm-i386/cpu.h linux-2.5.45-arch_additions/include/asm-i386/cpu.h
--- linux-2.5.45-base/include/asm-i386/cpu.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.45-arch_additions/include/asm-i386/cpu.h Wed Oct 30 17:54:32 2002
@@ -0,0 +1,28 @@
+#ifndef _ASM_I386_CPU_H_
+#define _ASM_I386_CPU_H_
+
+#include <linux/device.h>
+#include <linux/cpu.h>
+
+#include <asm/topology.h>
+#include <asm/node.h>
+
+struct i386_cpu {
+ struct cpu cpu;
+};
+extern struct i386_cpu cpu_devices[NR_CPUS];
+
+
+static inline int arch_register_cpu(int num){
+ int error, p_node = __cpu_to_node(num);
+ struct node *parent = NULL;
+
+#ifdef CONFIG_NUMA
+ parent = &node_devices[p_node].node;
+#endif /* CONFIG_NUMA */
+
+ error = register_cpu(&cpu_devices[num].cpu, num, parent);
+ return error;
+}
+
+#endif /* _ASM_I386_CPU_H_ */
diff -Nur --exclude-from=/usr/src/.dontdiff linux-2.5.45-base/include/asm-i386/memblk.h linux-2.5.45-arch_additions/include/asm-i386/memblk.h
--- linux-2.5.45-base/include/asm-i386/memblk.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.45-arch_additions/include/asm-i386/memblk.h Wed Oct 30 17:54:32 2002
@@ -0,0 +1,23 @@
+#ifndef _ASM_I386_MEMBLK_H_
+#define _ASM_I386_MEMBLK_H_
+
+#include <linux/device.h>
+#include <linux/mmzone.h>
+#include <linux/memblk.h>
+
+#include <asm/topology.h>
+#include <asm/node.h>
+
+struct i386_memblk {
+ struct memblk memblk;
+};
+extern struct i386_memblk memblk_devices[MAX_NR_MEMBLKS];
+
+static inline int arch_register_memblk(int num){
+ int p_node = __memblk_to_node(num);
+
+ return register_memblk(&memblk_devices[num].memblk, num,
+ &node_devices[p_node].node);
+}
+
+#endif /* _ASM_I386_MEMBLK_H_ */
diff -Nur --exclude-from=/usr/src/.dontdiff linux-2.5.45-base/include/asm-i386/node.h linux-2.5.45-arch_additions/include/asm-i386/node.h
--- linux-2.5.45-base/include/asm-i386/node.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.45-arch_additions/include/asm-i386/node.h Wed Oct 30 17:54:32 2002
@@ -0,0 +1,25 @@
+#ifndef _ASM_I386_NODE_H_
+#define _ASM_I386_NODE_H_
+
+#include <linux/device.h>
+#include <linux/mmzone.h>
+#include <linux/node.h>
+
+#include <asm/topology.h>
+
+struct i386_node {
+ struct node node;
+};
+extern struct i386_node node_devices[MAX_NUMNODES];
+
+static inline int arch_register_node(int num){
+ int p_node = __parent_node(num);
+ struct node *parent = NULL;
+
+ if (p_node != num)
+ parent = &node_devices[p_node].node;
+
+ return register_node(&node_devices[num].node, num, parent);
+}
+
+#endif /* _ASM_I386_NODE_H_ */

-
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/



This archive was generated by hypermail 2b29 : Thu Oct 31 2002 - 22:00:50 EST