#include <linux/mm.h>
#include <linux/cpu.h>
#include <linux/module.h>
+#include <linux/hardirq.h>
#include <linux/topology.h>
-#define define_one_ro(_name) \
+#define define_one_ro_named(_name, _func) \
+static SYSDEV_ATTR(_name, 0444, _func, NULL)
+
+#define define_one_ro(_name) \
static SYSDEV_ATTR(_name, 0444, show_##_name, NULL)
#define define_id_show_func(name) \
-static ssize_t show_##name(struct sys_device *dev, char *buf) \
+static ssize_t show_##name(struct sys_device *dev, \
+ struct sysdev_attribute *attr, char *buf) \
{ \
unsigned int cpu = dev->id; \
return sprintf(buf, "%d\n", topology_##name(cpu)); \
}
-#define define_siblings_show_func(name) \
-static ssize_t show_##name(struct sys_device *dev, char *buf) \
+#if defined(topology_thread_cpumask) || defined(topology_core_cpumask)
+static ssize_t show_cpumap(int type, const struct cpumask *mask, char *buf)
+{
+ ptrdiff_t len = PTR_ALIGN(buf + PAGE_SIZE - 1, PAGE_SIZE) - buf;
+ int n = 0;
+
+ if (len > 1) {
+ n = type?
+ cpulist_scnprintf(buf, len-2, mask) :
+ cpumask_scnprintf(buf, len-2, mask);
+ buf[n++] = '\n';
+ buf[n] = '\0';
+ }
+ return n;
+}
+#endif
+
+#ifdef arch_provides_topology_pointers
+#define define_siblings_show_map(name) \
+static ssize_t show_##name(struct sys_device *dev, \
+ struct sysdev_attribute *attr, char *buf) \
{ \
- ssize_t len = -1; \
unsigned int cpu = dev->id; \
- len = cpumask_scnprintf(buf, NR_CPUS+1, topology_##name(cpu)); \
- return (len + sprintf(buf + len, "\n")); \
+ return show_cpumap(0, topology_##name(cpu), buf); \
+}
+
+#define define_siblings_show_list(name) \
+static ssize_t show_##name##_list(struct sys_device *dev, \
+ struct sysdev_attribute *attr, \
+ char *buf) \
+{ \
+ unsigned int cpu = dev->id; \
+ return show_cpumap(1, topology_##name(cpu), buf); \
}
-#ifdef topology_physical_package_id
-define_id_show_func(physical_package_id);
-define_one_ro(physical_package_id);
-#define ref_physical_package_id_attr &attr_physical_package_id.attr,
#else
-#define ref_physical_package_id_attr
+#define define_siblings_show_map(name) \
+static ssize_t show_##name(struct sys_device *dev, \
+ struct sysdev_attribute *attr, char *buf) \
+{ \
+ return show_cpumap(0, topology_##name(dev->id), buf); \
+}
+
+#define define_siblings_show_list(name) \
+static ssize_t show_##name##_list(struct sys_device *dev, \
+ struct sysdev_attribute *attr, \
+ char *buf) \
+{ \
+ return show_cpumap(1, topology_##name(dev->id), buf); \
+}
#endif
-#ifdef topology_core_id
+#define define_siblings_show_func(name) \
+ define_siblings_show_map(name); define_siblings_show_list(name)
+
+define_id_show_func(physical_package_id);
+define_one_ro(physical_package_id);
+
define_id_show_func(core_id);
define_one_ro(core_id);
-#define ref_core_id_attr &attr_core_id.attr,
-#else
-#define ref_core_id_attr
-#endif
-#ifdef topology_thread_siblings
-define_siblings_show_func(thread_siblings);
-define_one_ro(thread_siblings);
-#define ref_thread_siblings_attr &attr_thread_siblings.attr,
-#else
-#define ref_thread_siblings_attr
-#endif
+define_siblings_show_func(thread_cpumask);
+define_one_ro_named(thread_siblings, show_thread_cpumask);
+define_one_ro_named(thread_siblings_list, show_thread_cpumask_list);
-#ifdef topology_core_siblings
-define_siblings_show_func(core_siblings);
-define_one_ro(core_siblings);
-#define ref_core_siblings_attr &attr_core_siblings.attr,
-#else
-#define ref_core_siblings_attr
-#endif
+define_siblings_show_func(core_cpumask);
+define_one_ro_named(core_siblings, show_core_cpumask);
+define_one_ro_named(core_siblings_list, show_core_cpumask_list);
static struct attribute *default_attrs[] = {
- ref_physical_package_id_attr
- ref_core_id_attr
- ref_thread_siblings_attr
- ref_core_siblings_attr
+ &attr_physical_package_id.attr,
+ &attr_core_id.attr,
+ &attr_thread_siblings.attr,
+ &attr_thread_siblings_list.attr,
+ &attr_core_siblings.attr,
+ &attr_core_siblings_list.attr,
NULL
};
.name = "topology"
};
-static cpumask_t topology_dev_map = CPU_MASK_NONE;
-
/* Add/Remove cpu_topology interface for CPU device */
static int __cpuinit topology_add_dev(unsigned int cpu)
{
- int rc;
struct sys_device *sys_dev = get_cpu_sysdev(cpu);
- rc = sysfs_create_group(&sys_dev->kobj, &topology_attr_group);
- if (!rc)
- cpu_set(cpu, topology_dev_map);
- return rc;
+ return sysfs_create_group(&sys_dev->kobj, &topology_attr_group);
}
-#ifdef CONFIG_HOTPLUG_CPU
static void __cpuinit topology_remove_dev(unsigned int cpu)
{
struct sys_device *sys_dev = get_cpu_sysdev(cpu);
- if (!cpu_isset(cpu, topology_dev_map))
- return;
- cpu_clear(cpu, topology_dev_map);
sysfs_remove_group(&sys_dev->kobj, &topology_attr_group);
}
switch (action) {
case CPU_UP_PREPARE:
+ case CPU_UP_PREPARE_FROZEN:
rc = topology_add_dev(cpu);
break;
case CPU_UP_CANCELED:
+ case CPU_UP_CANCELED_FROZEN:
case CPU_DEAD:
+ case CPU_DEAD_FROZEN:
topology_remove_dev(cpu);
break;
}
return rc ? NOTIFY_BAD : NOTIFY_OK;
}
-#endif
static int __cpuinit topology_sysfs_init(void)
{
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff