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SubjectRe: [PATCH] per-zone^Wnode kswapd process
As promised, here is the latest and greatest (heh) topology API patch. 
Should apply cleanly on top of mm3. As always, comment, criticize, and
flame away!

Cheers

-Matt
diff -Nur linux-2.5.34-mm3/include/asm-alpha/mmzone.h linux-2.5.34-mm3+topo/include/asm-alpha/mmzone.h
--- linux-2.5.34-mm3/include/asm-alpha/mmzone.h Fri Sep 13 14:58:03 2002
+++ linux-2.5.34-mm3+topo/include/asm-alpha/mmzone.h Fri Sep 13 14:59:21 2002
@@ -107,15 +107,6 @@
#ifdef CONFIG_NUMA_SCHED
#define NODE_SCHEDULE_DATA(nid) (&((PLAT_NODE_DATA(nid))->schedule_data))
#endif
-
-#ifdef CONFIG_ALPHA_WILDFIRE
-/* With wildfire assume 4 CPUs per node */
-#define cputonode(cpu) ((cpu) >> 2)
-#else
-#define cputonode(cpu) 0
-#endif /* CONFIG_ALPHA_WILDFIRE */
-
-#define numa_node_id() cputonode(smp_processor_id())
#endif /* CONFIG_NUMA */

#endif /* CONFIG_DISCONTIGMEM */
diff -Nur linux-2.5.34-mm3/include/asm-alpha/topology.h linux-2.5.34-mm3+topo/include/asm-alpha/topology.h
--- linux-2.5.34-mm3/include/asm-alpha/topology.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.34-mm3+topo/include/asm-alpha/topology.h Fri Sep 13 14:59:21 2002
@@ -0,0 +1,14 @@
+#ifndef _ASM_ALPHA_TOPOLOGY_H
+#define _ASM_ALPHA_TOPOLOGY_H
+
+#ifdef CONFIG_NUMA
+#ifdef CONFIG_ALPHA_WILDFIRE
+/* With wildfire assume 4 CPUs per node */
+#define __cpu_to_node(cpu) ((cpu) >> 2)
+#endif /* CONFIG_ALPHA_WILDFIRE */
+#endif /* CONFIG_NUMA */
+
+/* Get the rest of the topology definitions */
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_ALPHA_TOPOLOGY_H */
diff -Nur linux-2.5.34-mm3/include/asm-arm/topology.h linux-2.5.34-mm3+topo/include/asm-arm/topology.h
--- linux-2.5.34-mm3/include/asm-arm/topology.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.34-mm3+topo/include/asm-arm/topology.h Fri Sep 13 14:59:21 2002
@@ -0,0 +1,6 @@
+#ifndef _ASM_ARM_TOPOLOGY_H
+#define _ASM_ARM_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_ARM_TOPOLOGY_H */
diff -Nur linux-2.5.34-mm3/include/asm-cris/topology.h linux-2.5.34-mm3+topo/include/asm-cris/topology.h
--- linux-2.5.34-mm3/include/asm-cris/topology.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.34-mm3+topo/include/asm-cris/topology.h Fri Sep 13 14:59:21 2002
@@ -0,0 +1,6 @@
+#ifndef _ASM_CRIS_TOPOLOGY_H
+#define _ASM_CRIS_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_CRIS_TOPOLOGY_H */
diff -Nur linux-2.5.34-mm3/include/asm-generic/topology.h linux-2.5.34-mm3+topo/include/asm-generic/topology.h
--- linux-2.5.34-mm3/include/asm-generic/topology.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.34-mm3+topo/include/asm-generic/topology.h Fri Sep 13 14:59:21 2002
@@ -0,0 +1,51 @@
+/*
+ * linux/include/asm-generic/topology.h
+ *
+ * Written by: Matthew Dobson, IBM Corporation
+ *
+ * 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>
+ */
+#ifndef _ASM_GENERIC_TOPOLOGY_H
+#define _ASM_GENERIC_TOPOLOGY_H
+
+/* Other architectures wishing to use this simple topology API should fill
+ in the below functions as appropriate in their own <asm/topology.h> file. */
+#ifndef __cpu_to_node
+#define __cpu_to_node(cpu) (0)
+#endif
+#ifndef __memblk_to_node
+#define __memblk_to_node(memblk) (0)
+#endif
+#ifndef __parent_node
+#define __parent_node(nid) (0)
+#endif
+#ifndef __node_to_first_cpu
+#define __node_to_first_cpu(node) (0)
+#endif
+#ifndef __node_to_cpu_mask
+#define __node_to_cpu_mask(node) (cpu_online_map)
+#endif
+#ifndef __node_to_memblk
+#define __node_to_memblk(node) (0)
+#endif
+
+#endif /* _ASM_GENERIC_TOPOLOGY_H */
diff -Nur linux-2.5.34-mm3/include/asm-i386/topology.h linux-2.5.34-mm3+topo/include/asm-i386/topology.h
--- linux-2.5.34-mm3/include/asm-i386/topology.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.34-mm3+topo/include/asm-i386/topology.h Fri Sep 13 14:59:21 2002
@@ -0,0 +1,92 @@
+/*
+ * linux/include/asm-i386/topology.h
+ *
+ * Written by: Matthew Dobson, IBM Corporation
+ *
+ * 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>
+ */
+#ifndef _ASM_I386_TOPOLOGY_H
+#define _ASM_I386_TOPOLOGY_H
+
+#ifdef CONFIG_X86_NUMAQ
+
+#include <asm/smpboot.h>
+
+/* Returns the number of the node containing CPU 'cpu' */
+#define __cpu_to_node(cpu) (cpu_to_logical_apicid(cpu) >> 4)
+
+/* Returns the number of the node containing MemBlk 'memblk' */
+#define __memblk_to_node(memblk) (memblk)
+
+/* Returns the number of the node containing Node 'nid'. This architecture is flat,
+ so it is a pretty simple function! */
+#define __parent_node(nid) (nid)
+
+/* Returns the number of the first CPU on Node 'node'.
+ * This should be changed to a set of cached values
+ * but this will do for now.
+ */
+static inline int __node_to_first_cpu(int node)
+{
+ int i, cpu, logical_apicid = node << 4;
+
+ for(i = 1; i < 16; i <<= 1)
+ /* check to see if the cpu is in the system */
+ if ((cpu = logical_apicid_to_cpu(logical_apicid | i)) >= 0)
+ /* if yes, return it to caller */
+ return cpu;
+
+ return 0;
+}
+
+/* Returns a bitmask of CPUs on Node 'node'.
+ * This should be changed to a set of cached bitmasks
+ * but this will do for now.
+ */
+static inline unsigned long __node_to_cpu_mask(int node)
+{
+ int i, cpu, logical_apicid = node << 4;
+ unsigned long mask;
+
+ for(i = 1; i < 16; i <<= 1)
+ /* check to see if the cpu is in the system */
+ if ((cpu = logical_apicid_to_cpu(logical_apicid | i)) >= 0)
+ /* if yes, add to bitmask */
+ mask |= 1 << cpu;
+
+ return mask;
+}
+
+/* Returns the number of the first MemBlk on Node 'node' */
+#define __node_to_memblk(node) (node)
+
+#else /* !CONFIG_X86_NUMAQ */
+/*
+ * Other i386 platforms should define their own version of the
+ * above macros here.
+ */
+
+#include <asm-generic/topology.h>
+
+#endif /* CONFIG_X86_NUMAQ */
+
+#endif /* _ASM_I386_TOPOLOGY_H */
diff -Nur linux-2.5.34-mm3/include/asm-ia64/topology.h linux-2.5.34-mm3+topo/include/asm-ia64/topology.h
--- linux-2.5.34-mm3/include/asm-ia64/topology.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.34-mm3+topo/include/asm-ia64/topology.h Fri Sep 13 14:59:21 2002
@@ -0,0 +1,6 @@
+#ifndef _ASM_IA64_TOPOLOGY_H
+#define _ASM_IA64_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_IA64_TOPOLOGY_H */
diff -Nur linux-2.5.34-mm3/include/asm-m68k/topology.h linux-2.5.34-mm3+topo/include/asm-m68k/topology.h
--- linux-2.5.34-mm3/include/asm-m68k/topology.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.34-mm3+topo/include/asm-m68k/topology.h Fri Sep 13 14:59:21 2002
@@ -0,0 +1,6 @@
+#ifndef _ASM_M68K_TOPOLOGY_H
+#define _ASM_M68K_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_M68K_TOPOLOGY_H */
diff -Nur linux-2.5.34-mm3/include/asm-mips/topology.h linux-2.5.34-mm3+topo/include/asm-mips/topology.h
--- linux-2.5.34-mm3/include/asm-mips/topology.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.34-mm3+topo/include/asm-mips/topology.h Fri Sep 13 14:59:21 2002
@@ -0,0 +1,6 @@
+#ifndef _ASM_MIPS_TOPOLOGY_H
+#define _ASM_MIPS_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_MIPS_TOPOLOGY_H */
diff -Nur linux-2.5.34-mm3/include/asm-mips64/mmzone.h linux-2.5.34-mm3+topo/include/asm-mips64/mmzone.h
--- linux-2.5.34-mm3/include/asm-mips64/mmzone.h Fri Sep 13 14:58:03 2002
+++ linux-2.5.34-mm3+topo/include/asm-mips64/mmzone.h Fri Sep 13 14:59:21 2002
@@ -28,8 +28,6 @@
#define PLAT_NODE_DATA_LOCALNR(p, n) \
(((p) >> PAGE_SHIFT) - PLAT_NODE_DATA(n)->gendata.node_start_pfn)

-#define numa_node_id() cputocnode(current->processor)
-
#ifdef CONFIG_DISCONTIGMEM

/*
diff -Nur linux-2.5.34-mm3/include/asm-mips64/topology.h linux-2.5.34-mm3+topo/include/asm-mips64/topology.h
--- linux-2.5.34-mm3/include/asm-mips64/topology.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.34-mm3+topo/include/asm-mips64/topology.h Fri Sep 13 14:59:21 2002
@@ -0,0 +1,11 @@
+#ifndef _ASM_MIPS64_TOPOLOGY_H
+#define _ASM_MIPS64_TOPOLOGY_H
+
+#include <asm/mmzone.h>
+
+#define __cpu_to_node(cpu) (cputocnode(cpu))
+
+/* Get the rest of the topology definitions */
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_MIPS64_TOPOLOGY_H */
diff -Nur linux-2.5.34-mm3/include/asm-parisc/topology.h linux-2.5.34-mm3+topo/include/asm-parisc/topology.h
--- linux-2.5.34-mm3/include/asm-parisc/topology.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.34-mm3+topo/include/asm-parisc/topology.h Fri Sep 13 14:59:21 2002
@@ -0,0 +1,6 @@
+#ifndef _ASM_PARISC_TOPOLOGY_H
+#define _ASM_PARISC_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_PARISC_TOPOLOGY_H */
diff -Nur linux-2.5.34-mm3/include/asm-ppc/topology.h linux-2.5.34-mm3+topo/include/asm-ppc/topology.h
--- linux-2.5.34-mm3/include/asm-ppc/topology.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.34-mm3+topo/include/asm-ppc/topology.h Fri Sep 13 14:59:21 2002
@@ -0,0 +1,6 @@
+#ifndef _ASM_PPC_TOPOLOGY_H
+#define _ASM_PPC_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_PPC_TOPOLOGY_H */
diff -Nur linux-2.5.34-mm3/include/asm-ppc64/mmzone.h linux-2.5.34-mm3+topo/include/asm-ppc64/mmzone.h
--- linux-2.5.34-mm3/include/asm-ppc64/mmzone.h Fri Sep 13 14:58:03 2002
+++ linux-2.5.34-mm3+topo/include/asm-ppc64/mmzone.h Fri Sep 13 14:59:21 2002
@@ -82,13 +82,5 @@
(ADDR_TO_MAPBASE(kaddr) + LOCAL_MAP_NR(kaddr)); \
})

-#ifdef CONFIG_NUMA
-
-/* XXX grab this from the device tree - Anton */
-#define cputonode(cpu) ((cpu) >> CPU_SHIFT_BITS)
-
-#define numa_node_id() cputonode(smp_processor_id())
-
-#endif /* CONFIG_NUMA */
#endif /* CONFIG_DISCONTIGMEM */
#endif /* _ASM_MMZONE_H_ */
diff -Nur linux-2.5.34-mm3/include/asm-ppc64/topology.h linux-2.5.34-mm3+topo/include/asm-ppc64/topology.h
--- linux-2.5.34-mm3/include/asm-ppc64/topology.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.34-mm3+topo/include/asm-ppc64/topology.h Fri Sep 13 14:59:21 2002
@@ -0,0 +1,14 @@
+#ifndef _ASM_PPC64_TOPOLOGY_H
+#define _ASM_PPC64_TOPOLOGY_H
+
+#include <asm/mmzone.h>
+
+#ifdef CONFIG_NUMA
+/* XXX grab this from the device tree - Anton */
+#define __cpu_to_node(cpu) ((cpu) >> CPU_SHIFT_BITS)
+#endif /* CONFIG_NUMA */
+
+/* Get the rest of the topology definitions */
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_PPC64_TOPOLOGY_H */
diff -Nur linux-2.5.34-mm3/include/asm-s390/topology.h linux-2.5.34-mm3+topo/include/asm-s390/topology.h
--- linux-2.5.34-mm3/include/asm-s390/topology.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.34-mm3+topo/include/asm-s390/topology.h Fri Sep 13 14:59:21 2002
@@ -0,0 +1,6 @@
+#ifndef _ASM_S390_TOPOLOGY_H
+#define _ASM_S390_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_S390_TOPOLOGY_H */
diff -Nur linux-2.5.34-mm3/include/asm-s390x/topology.h linux-2.5.34-mm3+topo/include/asm-s390x/topology.h
--- linux-2.5.34-mm3/include/asm-s390x/topology.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.34-mm3+topo/include/asm-s390x/topology.h Fri Sep 13 14:59:21 2002
@@ -0,0 +1,6 @@
+#ifndef _ASM_S390X_TOPOLOGY_H
+#define _ASM_S390X_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_S390X_TOPOLOGY_H */
diff -Nur linux-2.5.34-mm3/include/asm-sh/topology.h linux-2.5.34-mm3+topo/include/asm-sh/topology.h
--- linux-2.5.34-mm3/include/asm-sh/topology.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.34-mm3+topo/include/asm-sh/topology.h Fri Sep 13 14:59:21 2002
@@ -0,0 +1,6 @@
+#ifndef _ASM_SH_TOPOLOGY_H
+#define _ASM_SH_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_SH_TOPOLOGY_H */
diff -Nur linux-2.5.34-mm3/include/asm-sparc/topology.h linux-2.5.34-mm3+topo/include/asm-sparc/topology.h
--- linux-2.5.34-mm3/include/asm-sparc/topology.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.34-mm3+topo/include/asm-sparc/topology.h Fri Sep 13 14:59:21 2002
@@ -0,0 +1,6 @@
+#ifndef _ASM_SPARC_TOPOLOGY_H
+#define _ASM_SPARC_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_SPARC_TOPOLOGY_H */
diff -Nur linux-2.5.34-mm3/include/asm-sparc64/topology.h linux-2.5.34-mm3+topo/include/asm-sparc64/topology.h
--- linux-2.5.34-mm3/include/asm-sparc64/topology.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.34-mm3+topo/include/asm-sparc64/topology.h Fri Sep 13 14:59:21 2002
@@ -0,0 +1,6 @@
+#ifndef _ASM_SPARC64_TOPOLOGY_H
+#define _ASM_SPARC64_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_SPARC64_TOPOLOGY_H */
diff -Nur linux-2.5.34-mm3/include/asm-x86_64/topology.h linux-2.5.34-mm3+topo/include/asm-x86_64/topology.h
--- linux-2.5.34-mm3/include/asm-x86_64/topology.h Wed Dec 31 16:00:00 1969
+++ linux-2.5.34-mm3+topo/include/asm-x86_64/topology.h Fri Sep 13 14:59:21 2002
@@ -0,0 +1,6 @@
+#ifndef _ASM_X86_64_TOPOLOGY_H
+#define _ASM_X86_64_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_X86_64_TOPOLOGY_H */
diff -Nur linux-2.5.34-mm3/include/linux/mmzone.h linux-2.5.34-mm3+topo/include/linux/mmzone.h
--- linux-2.5.34-mm3/include/linux/mmzone.h Fri Sep 13 14:58:04 2002
+++ linux-2.5.34-mm3+topo/include/linux/mmzone.h Fri Sep 13 14:59:21 2002
@@ -248,13 +248,23 @@
#define for_each_zone(zone) \
for (zone = pgdat_list->node_zones; zone; zone = next_zone(zone))

+#ifdef CONFIG_NUMA
+#define MAX_NR_MEMBLKS BITS_PER_LONG /* Max number of Memory Blocks */
+#else /* !CONFIG_NUMA */
+#define MAX_NR_MEMBLKS 1
+#endif /* CONFIG_NUMA */
+
+#include <asm/topology.h>
+/* Returns the number of the current Node. */
+#define numa_node_id() (__cpu_to_node(smp_processor_id()))
+
#ifndef CONFIG_DISCONTIGMEM

#define NODE_DATA(nid) (&contig_page_data)
#define NODE_MEM_MAP(nid) mem_map
#define MAX_NR_NODES 1

-#else /* !CONFIG_DISCONTIGMEM */
+#else /* CONFIG_DISCONTIGMEM */

#include <asm/mmzone.h>
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