summaryrefslogtreecommitdiff
path: root/arch/ia64/kernel/topology.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/ia64/kernel/topology.c')
-rw-r--r--arch/ia64/kernel/topology.c410
1 files changed, 0 insertions, 410 deletions
diff --git a/arch/ia64/kernel/topology.c b/arch/ia64/kernel/topology.c
deleted file mode 100644
index 94a848b06f15..000000000000
--- a/arch/ia64/kernel/topology.c
+++ /dev/null
@@ -1,410 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * This file contains NUMA specific variables and functions which are used on
- * NUMA machines with contiguous memory.
- * 2002/08/07 Erich Focht <efocht@ess.nec.de>
- * Populate cpu entries in sysfs for non-numa systems as well
- * Intel Corporation - Ashok Raj
- * 02/27/2006 Zhang, Yanmin
- * Populate cpu cache entries in sysfs for cpu cache info
- */
-
-#include <linux/cpu.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/node.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/memblock.h>
-#include <linux/nodemask.h>
-#include <linux/notifier.h>
-#include <linux/export.h>
-#include <asm/mmzone.h>
-#include <asm/numa.h>
-#include <asm/cpu.h>
-
-static struct ia64_cpu *sysfs_cpus;
-
-void arch_fix_phys_package_id(int num, u32 slot)
-{
-#ifdef CONFIG_SMP
- if (cpu_data(num)->socket_id == -1)
- cpu_data(num)->socket_id = slot;
-#endif
-}
-EXPORT_SYMBOL_GPL(arch_fix_phys_package_id);
-
-
-#ifdef CONFIG_HOTPLUG_CPU
-int __ref arch_register_cpu(int num)
-{
- /*
- * If CPEI can be re-targeted or if this is not
- * CPEI target, then it is hotpluggable
- */
- if (can_cpei_retarget() || !is_cpu_cpei_target(num))
- sysfs_cpus[num].cpu.hotpluggable = 1;
- map_cpu_to_node(num, node_cpuid[num].nid);
- return register_cpu(&sysfs_cpus[num].cpu, num);
-}
-EXPORT_SYMBOL(arch_register_cpu);
-
-void __ref arch_unregister_cpu(int num)
-{
- unregister_cpu(&sysfs_cpus[num].cpu);
- unmap_cpu_from_node(num, cpu_to_node(num));
-}
-EXPORT_SYMBOL(arch_unregister_cpu);
-#else
-static int __init arch_register_cpu(int num)
-{
- return register_cpu(&sysfs_cpus[num].cpu, num);
-}
-#endif /*CONFIG_HOTPLUG_CPU*/
-
-
-static int __init topology_init(void)
-{
- int i, err = 0;
-
- sysfs_cpus = kcalloc(NR_CPUS, sizeof(struct ia64_cpu), GFP_KERNEL);
- if (!sysfs_cpus)
- panic("kzalloc in topology_init failed - NR_CPUS too big?");
-
- for_each_present_cpu(i) {
- if((err = arch_register_cpu(i)))
- goto out;
- }
-out:
- return err;
-}
-
-subsys_initcall(topology_init);
-
-
-/*
- * Export cpu cache information through sysfs
- */
-
-/*
- * A bunch of string array to get pretty printing
- */
-static const char *cache_types[] = {
- "", /* not used */
- "Instruction",
- "Data",
- "Unified" /* unified */
-};
-
-static const char *cache_mattrib[]={
- "WriteThrough",
- "WriteBack",
- "", /* reserved */
- "" /* reserved */
-};
-
-struct cache_info {
- pal_cache_config_info_t cci;
- cpumask_t shared_cpu_map;
- int level;
- int type;
- struct kobject kobj;
-};
-
-struct cpu_cache_info {
- struct cache_info *cache_leaves;
- int num_cache_leaves;
- struct kobject kobj;
-};
-
-static struct cpu_cache_info all_cpu_cache_info[NR_CPUS];
-#define LEAF_KOBJECT_PTR(x,y) (&all_cpu_cache_info[x].cache_leaves[y])
-
-#ifdef CONFIG_SMP
-static void cache_shared_cpu_map_setup(unsigned int cpu,
- struct cache_info * this_leaf)
-{
- pal_cache_shared_info_t csi;
- int num_shared, i = 0;
- unsigned int j;
-
- if (cpu_data(cpu)->threads_per_core <= 1 &&
- cpu_data(cpu)->cores_per_socket <= 1) {
- cpumask_set_cpu(cpu, &this_leaf->shared_cpu_map);
- return;
- }
-
- if (ia64_pal_cache_shared_info(this_leaf->level,
- this_leaf->type,
- 0,
- &csi) != PAL_STATUS_SUCCESS)
- return;
-
- num_shared = (int) csi.num_shared;
- do {
- for_each_possible_cpu(j)
- if (cpu_data(cpu)->socket_id == cpu_data(j)->socket_id
- && cpu_data(j)->core_id == csi.log1_cid
- && cpu_data(j)->thread_id == csi.log1_tid)
- cpumask_set_cpu(j, &this_leaf->shared_cpu_map);
-
- i++;
- } while (i < num_shared &&
- ia64_pal_cache_shared_info(this_leaf->level,
- this_leaf->type,
- i,
- &csi) == PAL_STATUS_SUCCESS);
-}
-#else
-static void cache_shared_cpu_map_setup(unsigned int cpu,
- struct cache_info * this_leaf)
-{
- cpumask_set_cpu(cpu, &this_leaf->shared_cpu_map);
- return;
-}
-#endif
-
-static ssize_t show_coherency_line_size(struct cache_info *this_leaf,
- char *buf)
-{
- return sprintf(buf, "%u\n", 1 << this_leaf->cci.pcci_line_size);
-}
-
-static ssize_t show_ways_of_associativity(struct cache_info *this_leaf,
- char *buf)
-{
- return sprintf(buf, "%u\n", this_leaf->cci.pcci_assoc);
-}
-
-static ssize_t show_attributes(struct cache_info *this_leaf, char *buf)
-{
- return sprintf(buf,
- "%s\n",
- cache_mattrib[this_leaf->cci.pcci_cache_attr]);
-}
-
-static ssize_t show_size(struct cache_info *this_leaf, char *buf)
-{
- return sprintf(buf, "%uK\n", this_leaf->cci.pcci_cache_size / 1024);
-}
-
-static ssize_t show_number_of_sets(struct cache_info *this_leaf, char *buf)
-{
- unsigned number_of_sets = this_leaf->cci.pcci_cache_size;
- number_of_sets /= this_leaf->cci.pcci_assoc;
- number_of_sets /= 1 << this_leaf->cci.pcci_line_size;
-
- return sprintf(buf, "%u\n", number_of_sets);
-}
-
-static ssize_t show_shared_cpu_map(struct cache_info *this_leaf, char *buf)
-{
- cpumask_t shared_cpu_map;
-
- cpumask_and(&shared_cpu_map,
- &this_leaf->shared_cpu_map, cpu_online_mask);
- return scnprintf(buf, PAGE_SIZE, "%*pb\n",
- cpumask_pr_args(&shared_cpu_map));
-}
-
-static ssize_t show_type(struct cache_info *this_leaf, char *buf)
-{
- int type = this_leaf->type + this_leaf->cci.pcci_unified;
- return sprintf(buf, "%s\n", cache_types[type]);
-}
-
-static ssize_t show_level(struct cache_info *this_leaf, char *buf)
-{
- return sprintf(buf, "%u\n", this_leaf->level);
-}
-
-struct cache_attr {
- struct attribute attr;
- ssize_t (*show)(struct cache_info *, char *);
- ssize_t (*store)(struct cache_info *, const char *, size_t count);
-};
-
-#ifdef define_one_ro
- #undef define_one_ro
-#endif
-#define define_one_ro(_name) \
- static struct cache_attr _name = \
-__ATTR(_name, 0444, show_##_name, NULL)
-
-define_one_ro(level);
-define_one_ro(type);
-define_one_ro(coherency_line_size);
-define_one_ro(ways_of_associativity);
-define_one_ro(size);
-define_one_ro(number_of_sets);
-define_one_ro(shared_cpu_map);
-define_one_ro(attributes);
-
-static struct attribute * cache_default_attrs[] = {
- &type.attr,
- &level.attr,
- &coherency_line_size.attr,
- &ways_of_associativity.attr,
- &attributes.attr,
- &size.attr,
- &number_of_sets.attr,
- &shared_cpu_map.attr,
- NULL
-};
-ATTRIBUTE_GROUPS(cache_default);
-
-#define to_object(k) container_of(k, struct cache_info, kobj)
-#define to_attr(a) container_of(a, struct cache_attr, attr)
-
-static ssize_t ia64_cache_show(struct kobject * kobj, struct attribute * attr, char * buf)
-{
- struct cache_attr *fattr = to_attr(attr);
- struct cache_info *this_leaf = to_object(kobj);
- ssize_t ret;
-
- ret = fattr->show ? fattr->show(this_leaf, buf) : 0;
- return ret;
-}
-
-static const struct sysfs_ops cache_sysfs_ops = {
- .show = ia64_cache_show
-};
-
-static struct kobj_type cache_ktype = {
- .sysfs_ops = &cache_sysfs_ops,
- .default_groups = cache_default_groups,
-};
-
-static struct kobj_type cache_ktype_percpu_entry = {
- .sysfs_ops = &cache_sysfs_ops,
-};
-
-static void cpu_cache_sysfs_exit(unsigned int cpu)
-{
- kfree(all_cpu_cache_info[cpu].cache_leaves);
- all_cpu_cache_info[cpu].cache_leaves = NULL;
- all_cpu_cache_info[cpu].num_cache_leaves = 0;
- memset(&all_cpu_cache_info[cpu].kobj, 0, sizeof(struct kobject));
- return;
-}
-
-static int cpu_cache_sysfs_init(unsigned int cpu)
-{
- unsigned long i, levels, unique_caches;
- pal_cache_config_info_t cci;
- int j;
- long status;
- struct cache_info *this_cache;
- int num_cache_leaves = 0;
-
- if ((status = ia64_pal_cache_summary(&levels, &unique_caches)) != 0) {
- printk(KERN_ERR "ia64_pal_cache_summary=%ld\n", status);
- return -1;
- }
-
- this_cache=kcalloc(unique_caches, sizeof(struct cache_info),
- GFP_KERNEL);
- if (this_cache == NULL)
- return -ENOMEM;
-
- for (i=0; i < levels; i++) {
- for (j=2; j >0 ; j--) {
- if ((status=ia64_pal_cache_config_info(i,j, &cci)) !=
- PAL_STATUS_SUCCESS)
- continue;
-
- this_cache[num_cache_leaves].cci = cci;
- this_cache[num_cache_leaves].level = i + 1;
- this_cache[num_cache_leaves].type = j;
-
- cache_shared_cpu_map_setup(cpu,
- &this_cache[num_cache_leaves]);
- num_cache_leaves ++;
- }
- }
-
- all_cpu_cache_info[cpu].cache_leaves = this_cache;
- all_cpu_cache_info[cpu].num_cache_leaves = num_cache_leaves;
-
- memset(&all_cpu_cache_info[cpu].kobj, 0, sizeof(struct kobject));
-
- return 0;
-}
-
-/* Add cache interface for CPU device */
-static int cache_add_dev(unsigned int cpu)
-{
- struct device *sys_dev = get_cpu_device(cpu);
- unsigned long i, j;
- struct cache_info *this_object;
- int retval = 0;
-
- if (all_cpu_cache_info[cpu].kobj.parent)
- return 0;
-
-
- retval = cpu_cache_sysfs_init(cpu);
- if (unlikely(retval < 0))
- return retval;
-
- retval = kobject_init_and_add(&all_cpu_cache_info[cpu].kobj,
- &cache_ktype_percpu_entry, &sys_dev->kobj,
- "%s", "cache");
- if (unlikely(retval < 0)) {
- cpu_cache_sysfs_exit(cpu);
- return retval;
- }
-
- for (i = 0; i < all_cpu_cache_info[cpu].num_cache_leaves; i++) {
- this_object = LEAF_KOBJECT_PTR(cpu,i);
- retval = kobject_init_and_add(&(this_object->kobj),
- &cache_ktype,
- &all_cpu_cache_info[cpu].kobj,
- "index%1lu", i);
- if (unlikely(retval)) {
- for (j = 0; j < i; j++) {
- kobject_put(&(LEAF_KOBJECT_PTR(cpu,j)->kobj));
- }
- kobject_put(&all_cpu_cache_info[cpu].kobj);
- cpu_cache_sysfs_exit(cpu);
- return retval;
- }
- kobject_uevent(&(this_object->kobj), KOBJ_ADD);
- }
- kobject_uevent(&all_cpu_cache_info[cpu].kobj, KOBJ_ADD);
- return retval;
-}
-
-/* Remove cache interface for CPU device */
-static int cache_remove_dev(unsigned int cpu)
-{
- unsigned long i;
-
- for (i = 0; i < all_cpu_cache_info[cpu].num_cache_leaves; i++)
- kobject_put(&(LEAF_KOBJECT_PTR(cpu,i)->kobj));
-
- if (all_cpu_cache_info[cpu].kobj.parent) {
- kobject_put(&all_cpu_cache_info[cpu].kobj);
- memset(&all_cpu_cache_info[cpu].kobj,
- 0,
- sizeof(struct kobject));
- }
-
- cpu_cache_sysfs_exit(cpu);
-
- return 0;
-}
-
-static int __init cache_sysfs_init(void)
-{
- int ret;
-
- ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "ia64/topology:online",
- cache_add_dev, cache_remove_dev);
- WARN_ON(ret < 0);
- return 0;
-}
-device_initcall(cache_sysfs_init);