1 files changed, 136 insertions, 0 deletions
diff --git a/include/linux/topology.h b/include/linux/topology.h
new file mode 100644
index 000000000000..d70e8972c67f
--- /dev/null
+++ b/include/linux/topology.h
@@ -0,0 +1,136 @@
+/*
+ * include/linux/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 _LINUX_TOPOLOGY_H
+#define _LINUX_TOPOLOGY_H
+#include <linux/cpumask.h>
+#include <linux/bitops.h>
+#include <linux/mmzone.h>
+#include <linux/smp.h>
+#include <asm/topology.h>
+#ifndef node_has_online_mem
+#define node_has_online_mem(nid) (1)
+#endif
+#ifndef nr_cpus_node
+#define nr_cpus_node(node)                                                      \
+        ({                                                                      \
+                cpumask_t __tmp__;                                              \
+                __tmp__ = node_to_cpumask(node);                                \
+                cpus_weight(__tmp__);                                           \
+        })
+#endif
+#define for_each_node_with_cpus(node)                                           \
+        for_each_online_node(node)                                              \
+                if (nr_cpus_node(node))
+#ifndef node_distance
+/* Conform to ACPI 2.0 SLIT distance definitions */
+#define LOCAL_DISTANCE          10
+#define REMOTE_DISTANCE         20
+#define node_distance(from,to)  ((from) == (to) ? LOCAL_DISTANCE : REMOTE_DISTANCE)
+#endif
+#ifndef PENALTY_FOR_NODE_WITH_CPUS
+#define PENALTY_FOR_NODE_WITH_CPUS      (1)
+#endif
+/*
+ * Below are the 3 major initializers used in building sched_domains:
+ * SD_SIBLING_INIT, for SMT domains
+ * SD_CPU_INIT, for SMP domains
+ * SD_NODE_INIT, for NUMA domains
+ *
+ * Any architecture that cares to do any tuning to these values should do so
+ * by defining their own arch-specific initializer in include/asm/topology.h.
+ * A definition there will automagically override these default initializers
+ * and allow arch-specific performance tuning of sched_domains.
+ */
+#ifdef CONFIG_SCHED_SMT
+/* MCD - Do we really need this?  It is always on if CONFIG_SCHED_SMT is,
+ * so can't we drop this in favor of CONFIG_SCHED_SMT?
+ */
+#define ARCH_HAS_SCHED_WAKE_IDLE
+/* Common values for SMT siblings */
+#ifndef SD_SIBLING_INIT
+#define SD_SIBLING_INIT (struct sched_domain) {         \
+        .span                   = CPU_MASK_NONE,        \
+        .parent                 = NULL,                 \
+        .groups                 = NULL,                 \
+        .min_interval           = 1,                    \
+        .max_interval           = 2,                    \
+        .busy_factor            = 8,                    \
+        .imbalance_pct          = 110,                  \
+        .cache_hot_time         = 0,                    \
+        .cache_nice_tries       = 0,                    \
+        .per_cpu_gain           = 25,                   \
+        .flags                  = SD_LOAD_BALANCE       \
+                                | SD_BALANCE_NEWIDLE    \
+                                | SD_BALANCE_EXEC       \
+                                | SD_WAKE_AFFINE        \
+                                | SD_WAKE_IDLE          \
+                                | SD_SHARE_CPUPOWER,    \
+        .last_balance           = jiffies,              \
+        .balance_interval       = 1,                    \
+        .nr_balance_failed      = 0,                    \
+}
+#endif
+#endif /* CONFIG_SCHED_SMT */
+/* Common values for CPUs */
+#ifndef SD_CPU_INIT
+#define SD_CPU_INIT (struct sched_domain) {             \
+        .span                   = CPU_MASK_NONE,        \
+        .parent                 = NULL,                 \
+        .groups                 = NULL,                 \
+        .min_interval           = 1,                    \
+        .max_interval           = 4,                    \
+        .busy_factor            = 64,                   \
+        .imbalance_pct          = 125,                  \
+        .cache_hot_time         = (5*1000000/2),        \
+        .cache_nice_tries       = 1,                    \
+        .per_cpu_gain           = 100,                  \
+        .flags                  = SD_LOAD_BALANCE       \
+                                | SD_BALANCE_NEWIDLE    \
+                                | SD_BALANCE_EXEC       \
+                                | SD_WAKE_AFFINE        \
+                                | SD_WAKE_IDLE          \
+                                | SD_WAKE_BALANCE,      \
+        .last_balance           = jiffies,              \
+        .balance_interval       = 1,                    \
+        .nr_balance_failed      = 0,                    \
+}
+#endif
+#ifdef CONFIG_NUMA
+#ifndef SD_NODE_INIT
+#error Please define an appropriate SD_NODE_INIT in include/asm/topology.h!!!
+#endif
+#endif /* CONFIG_NUMA */
+#endif /* _LINUX_TOPOLOGY_H */

diff --git a/include/linux/topology.h b/include/linux/topology.h new file mode 100644 index 000000000000..d70e8972c67f --- /dev/null +++ b/include/linux/topology.h
@@ -0,0 +1,136 @@
	1	/*
	2	* include/linux/topology.h
	3	*
	4	* Written by: Matthew Dobson, IBM Corporation
	5	*
	6	* Copyright (C) 2002, IBM Corp.
	7	*
	8	* All rights reserved.
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License as published by
	12	* the Free Software Foundation; either version 2 of the License, or
	13	* (at your option) any later version.
	14	*
	15	* This program is distributed in the hope that it will be useful, but
	16	* WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
	18	* NON INFRINGEMENT. See the GNU General Public License for more
	19	* details.
	20	*
	21	* You should have received a copy of the GNU General Public License
	22	* along with this program; if not, write to the Free Software
	23	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	24	*
	25	* Send feedback to <colpatch@us.ibm.com>
	26	*/
	27	#ifndef _LINUX_TOPOLOGY_H
	28	#define _LINUX_TOPOLOGY_H
	29
	30	#include <linux/cpumask.h>
	31	#include <linux/bitops.h>
	32	#include <linux/mmzone.h>
	33	#include <linux/smp.h>
	34	#include <asm/topology.h>
	35
	36	#ifndef node_has_online_mem
	37	#define node_has_online_mem(nid) (1)
	38	#endif
	39
	40	#ifndef nr_cpus_node
	41	#define nr_cpus_node(node) \
	42	({ \
	43	cpumask_t __tmp__; \
	44	__tmp__ = node_to_cpumask(node); \
	45	cpus_weight(__tmp__); \
	46	})
	47	#endif
	48
	49	#define for_each_node_with_cpus(node) \
	50	for_each_online_node(node) \
	51	if (nr_cpus_node(node))
	52
	53	#ifndef node_distance
	54	/* Conform to ACPI 2.0 SLIT distance definitions */
	55	#define LOCAL_DISTANCE 10
	56	#define REMOTE_DISTANCE 20
	57	#define node_distance(from,to) ((from) == (to) ? LOCAL_DISTANCE : REMOTE_DISTANCE)
	58	#endif
	59	#ifndef PENALTY_FOR_NODE_WITH_CPUS
	60	#define PENALTY_FOR_NODE_WITH_CPUS (1)
	61	#endif
	62
	63	/*
	64	* Below are the 3 major initializers used in building sched_domains:
	65	* SD_SIBLING_INIT, for SMT domains
	66	* SD_CPU_INIT, for SMP domains
	67	* SD_NODE_INIT, for NUMA domains
	68	*
	69	* Any architecture that cares to do any tuning to these values should do so
	70	* by defining their own arch-specific initializer in include/asm/topology.h.
	71	* A definition there will automagically override these default initializers
	72	* and allow arch-specific performance tuning of sched_domains.
	73	*/
	74	#ifdef CONFIG_SCHED_SMT
	75	/* MCD - Do we really need this? It is always on if CONFIG_SCHED_SMT is,
	76	* so can't we drop this in favor of CONFIG_SCHED_SMT?
	77	*/
	78	#define ARCH_HAS_SCHED_WAKE_IDLE
	79	/* Common values for SMT siblings */
	80	#ifndef SD_SIBLING_INIT
	81	#define SD_SIBLING_INIT (struct sched_domain) { \
	82	.span = CPU_MASK_NONE, \
	83	.parent = NULL, \
	84	.groups = NULL, \
	85	.min_interval = 1, \
	86	.max_interval = 2, \
	87	.busy_factor = 8, \
	88	.imbalance_pct = 110, \
	89	.cache_hot_time = 0, \
	90	.cache_nice_tries = 0, \
	91	.per_cpu_gain = 25, \
	92	.flags = SD_LOAD_BALANCE \
	93	\| SD_BALANCE_NEWIDLE \
	94	\| SD_BALANCE_EXEC \
	95	\| SD_WAKE_AFFINE \
	96	\| SD_WAKE_IDLE \
	97	\| SD_SHARE_CPUPOWER, \
	98	.last_balance = jiffies, \
	99	.balance_interval = 1, \
	100	.nr_balance_failed = 0, \
	101	}
	102	#endif
	103	#endif /* CONFIG_SCHED_SMT */
	104
	105	/* Common values for CPUs */
	106	#ifndef SD_CPU_INIT
	107	#define SD_CPU_INIT (struct sched_domain) { \
	108	.span = CPU_MASK_NONE, \
	109	.parent = NULL, \
	110	.groups = NULL, \
	111	.min_interval = 1, \
	112	.max_interval = 4, \
	113	.busy_factor = 64, \
	114	.imbalance_pct = 125, \
	115	.cache_hot_time = (5*1000000/2), \
	116	.cache_nice_tries = 1, \
	117	.per_cpu_gain = 100, \
	118	.flags = SD_LOAD_BALANCE \
	119	\| SD_BALANCE_NEWIDLE \
	120	\| SD_BALANCE_EXEC \
	121	\| SD_WAKE_AFFINE \
	122	\| SD_WAKE_IDLE \
	123	\| SD_WAKE_BALANCE, \
	124	.last_balance = jiffies, \
	125	.balance_interval = 1, \
	126	.nr_balance_failed = 0, \
	127	}
	128	#endif
	129
	130	#ifdef CONFIG_NUMA
	131	#ifndef SD_NODE_INIT
	132	#error Please define an appropriate SD_NODE_INIT in include/asm/topology.h!!!
	133	#endif
	134	#endif /* CONFIG_NUMA */
	135
	136	#endif /* _LINUX_TOPOLOGY_H */