+/*
+ * 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_X86_TOPOLOGY_H
+#define _ASM_X86_TOPOLOGY_H
+
+#ifdef CONFIG_NUMA
+#include <linux/cpumask.h>
+#include <asm/mpspec.h>
+
+/* Mappings between logical cpu number and node number */
#ifdef CONFIG_X86_32
-# include "topology_32.h"
+extern int cpu_to_node_map[];
+
#else
-# include "topology_64.h"
+DECLARE_PER_CPU(int, x86_cpu_to_node_map);
+extern int x86_cpu_to_node_map_init[];
+extern void *x86_cpu_to_node_map_early_ptr;
+/* Returns the number of the current Node. */
+#define numa_node_id() (early_cpu_to_node(raw_smp_processor_id()))
+#endif
+
+extern cpumask_t node_to_cpumask_map[];
+
+#define NUMA_NO_NODE (-1)
+
+/* Returns the number of the node containing CPU 'cpu' */
+#ifdef CONFIG_X86_32
+#define early_cpu_to_node(cpu) cpu_to_node(cpu)
+static inline int cpu_to_node(int cpu)
+{
+ return cpu_to_node_map[cpu];
+}
+
+#else /* CONFIG_X86_64 */
+static inline int early_cpu_to_node(int cpu)
+{
+ int *cpu_to_node_map = x86_cpu_to_node_map_early_ptr;
+
+ if (cpu_to_node_map)
+ return cpu_to_node_map[cpu];
+ else if (per_cpu_offset(cpu))
+ return per_cpu(x86_cpu_to_node_map, cpu);
+ else
+ return NUMA_NO_NODE;
+}
+
+static inline int cpu_to_node(int cpu)
+{
+#ifdef CONFIG_DEBUG_PER_CPU_MAPS
+ if (x86_cpu_to_node_map_early_ptr) {
+ printk("KERN_NOTICE cpu_to_node(%d): usage too early!\n",
+ (int)cpu);
+ dump_stack();
+ return ((int *)x86_cpu_to_node_map_early_ptr)[cpu];
+ }
+#endif
+ if (per_cpu_offset(cpu))
+ return per_cpu(x86_cpu_to_node_map, cpu);
+ else
+ return NUMA_NO_NODE;
+}
+#endif /* CONFIG_X86_64 */
+
+/*
+ * Returns the number of the node containing Node 'node'. This
+ * architecture is flat, so it is a pretty simple function!
+ */
+#define parent_node(node) (node)
+
+/* Returns a bitmask of CPUs on Node 'node'. */
+static inline cpumask_t node_to_cpumask(int node)
+{
+ return node_to_cpumask_map[node];
+}
+
+/* Returns the number of the first CPU on Node 'node'. */
+static inline int node_to_first_cpu(int node)
+{
+ cpumask_t mask = node_to_cpumask(node);
+
+ return first_cpu(mask);
+}
+
+#define pcibus_to_node(bus) __pcibus_to_node(bus)
+#define pcibus_to_cpumask(bus) __pcibus_to_cpumask(bus)
+
+#ifdef CONFIG_X86_32
+extern unsigned long node_start_pfn[];
+extern unsigned long node_end_pfn[];
+extern unsigned long node_remap_size[];
+#define node_has_online_mem(nid) (node_start_pfn[nid] != node_end_pfn[nid])
+
+# ifdef CONFIG_X86_HT
+# define ENABLE_TOPO_DEFINES
+# endif
+
+# define SD_CACHE_NICE_TRIES 1
+# define SD_IDLE_IDX 1
+# define SD_NEWIDLE_IDX 2
+# define SD_FORKEXEC_IDX 0
+
+#else
+
+# ifdef CONFIG_SMP
+# define ENABLE_TOPO_DEFINES
+# endif
+
+# define SD_CACHE_NICE_TRIES 2
+# define SD_IDLE_IDX 2
+# define SD_NEWIDLE_IDX 0
+# define SD_FORKEXEC_IDX 1
+
+#endif
+
+/* sched_domains SD_NODE_INIT for NUMAQ machines */
+#define SD_NODE_INIT (struct sched_domain) { \
+ .span = CPU_MASK_NONE, \
+ .parent = NULL, \
+ .child = NULL, \
+ .groups = NULL, \
+ .min_interval = 8, \
+ .max_interval = 32, \
+ .busy_factor = 32, \
+ .imbalance_pct = 125, \
+ .cache_nice_tries = SD_CACHE_NICE_TRIES, \
+ .busy_idx = 3, \
+ .idle_idx = SD_IDLE_IDX, \
+ .newidle_idx = SD_NEWIDLE_IDX, \
+ .wake_idx = 1, \
+ .forkexec_idx = SD_FORKEXEC_IDX, \
+ .flags = SD_LOAD_BALANCE \
+ | SD_BALANCE_EXEC \
+ | SD_BALANCE_FORK \
+ | SD_SERIALIZE \
+ | SD_WAKE_BALANCE, \
+ .last_balance = jiffies, \
+ .balance_interval = 1, \
+ .nr_balance_failed = 0, \
+}
+
+#ifdef CONFIG_X86_64_ACPI_NUMA
+extern int __node_distance(int, int);
+#define node_distance(a, b) __node_distance(a, b)
+#endif
+
+#else /* CONFIG_NUMA */
+
+#include <asm-generic/topology.h>
+
+#endif
+
+extern cpumask_t cpu_coregroup_map(int cpu);
+
+#ifdef ENABLE_TOPO_DEFINES
+#define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id)
+#define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id)
+#define topology_core_siblings(cpu) (per_cpu(cpu_core_map, cpu))
+#define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu))
+#endif
+
+#ifdef CONFIG_SMP
+#define mc_capable() (boot_cpu_data.x86_max_cores > 1)
+#define smt_capable() (smp_num_siblings > 1)
+#endif
+
#endif
projects / linux-2.6-omap-h63xx.git / blobdiff