regmap: Support some more block operations on cached devices
[linux-2.6.git] / drivers / base / cpu.c
index fd1b2f9..251acea 100644 (file)
 #include <linux/topology.h>
 #include <linux/device.h>
 #include <linux/node.h>
+#include <linux/gfp.h>
 
 #include "base.h"
 
+static struct sysdev_class_attribute *cpu_sysdev_class_attrs[];
+
 struct sysdev_class cpu_sysdev_class = {
        .name = "cpu",
+       .attrs = cpu_sysdev_class_attrs,
 };
 EXPORT_SYMBOL(cpu_sysdev_class);
 
@@ -76,34 +80,24 @@ void unregister_cpu(struct cpu *cpu)
 }
 
 #ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
-static ssize_t cpu_probe_store(struct class *class, const char *buf,
+static ssize_t cpu_probe_store(struct sysdev_class *class,
+                              struct sysdev_class_attribute *attr,
+                              const char *buf,
                               size_t count)
 {
        return arch_cpu_probe(buf, count);
 }
 
-static ssize_t cpu_release_store(struct class *class, const char *buf,
+static ssize_t cpu_release_store(struct sysdev_class *class,
+                                struct sysdev_class_attribute *attr,
+                                const char *buf,
                                 size_t count)
 {
        return arch_cpu_release(buf, count);
 }
 
-static CLASS_ATTR(probe, S_IWUSR, NULL, cpu_probe_store);
-static CLASS_ATTR(release, S_IWUSR, NULL, cpu_release_store);
-
-int __init cpu_probe_release_init(void)
-{
-       int rc;
-
-       rc = sysfs_create_file(&cpu_sysdev_class.kset.kobj,
-                              &class_attr_probe.attr);
-       if (!rc)
-               rc = sysfs_create_file(&cpu_sysdev_class.kset.kobj,
-                                      &class_attr_release.attr);
-
-       return rc;
-}
-device_initcall(cpu_probe_release_init);
+static SYSDEV_CLASS_ATTR(probe, S_IWUSR, NULL, cpu_probe_store);
+static SYSDEV_CLASS_ATTR(release, S_IWUSR, NULL, cpu_release_store);
 #endif /* CONFIG_ARCH_CPU_PROBE_RELEASE */
 
 #else /* ... !CONFIG_HOTPLUG_CPU */
@@ -141,27 +135,33 @@ static SYSDEV_ATTR(crash_notes, 0400, show_crash_notes, NULL);
 /*
  * Print cpu online, possible, present, and system maps
  */
-static ssize_t print_cpus_map(char *buf, const struct cpumask *map)
+
+struct cpu_attr {
+       struct sysdev_class_attribute attr;
+       const struct cpumask *const * const map;
+};
+
+static ssize_t show_cpus_attr(struct sysdev_class *class,
+                             struct sysdev_class_attribute *attr,
+                             char *buf)
 {
-       int n = cpulist_scnprintf(buf, PAGE_SIZE-2, map);
+       struct cpu_attr *ca = container_of(attr, struct cpu_attr, attr);
+       int n = cpulist_scnprintf(buf, PAGE_SIZE-2, *(ca->map));
 
        buf[n++] = '\n';
        buf[n] = '\0';
        return n;
 }
 
-#define        print_cpus_func(type) \
-static ssize_t print_cpus_##type(struct sysdev_class *class,           \
-                       struct sysdev_class_attribute *attr, char *buf) \
-{                                                                      \
-       return print_cpus_map(buf, cpu_##type##_mask);                  \
-}                                                                      \
-static struct sysdev_class_attribute attr_##type##_map =               \
-       _SYSDEV_CLASS_ATTR(type, 0444, print_cpus_##type, NULL)
+#define _CPU_ATTR(name, map)                                           \
+       { _SYSDEV_CLASS_ATTR(name, 0444, show_cpus_attr, NULL), map }
 
-print_cpus_func(online);
-print_cpus_func(possible);
-print_cpus_func(present);
+/* Keep in sync with cpu_sysdev_class_attrs */
+static struct cpu_attr cpu_attrs[] = {
+       _CPU_ATTR(online, &cpu_online_mask),
+       _CPU_ATTR(possible, &cpu_possible_mask),
+       _CPU_ATTR(present, &cpu_present_mask),
+};
 
 /*
  * Print values for NR_CPUS and offlined cpus
@@ -186,7 +186,7 @@ static ssize_t print_cpus_offline(struct sysdev_class *class,
        /* display offline cpus < nr_cpu_ids */
        if (!alloc_cpumask_var(&offline, GFP_KERNEL))
                return -ENOMEM;
-       cpumask_complement(offline, cpu_online_mask);
+       cpumask_andnot(offline, cpu_possible_mask, cpu_online_mask);
        n = cpulist_scnprintf(buf, len, offline);
        free_cpumask_var(offline);
 
@@ -207,29 +207,6 @@ static ssize_t print_cpus_offline(struct sysdev_class *class,
 }
 static SYSDEV_CLASS_ATTR(offline, 0444, print_cpus_offline, NULL);
 
-static struct sysdev_class_attribute *cpu_state_attr[] = {
-       &attr_online_map,
-       &attr_possible_map,
-       &attr_present_map,
-       &attr_kernel_max,
-       &attr_offline,
-};
-
-static int cpu_states_init(void)
-{
-       int i;
-       int err = 0;
-
-       for (i = 0;  i < ARRAY_SIZE(cpu_state_attr); i++) {
-               int ret;
-               ret = sysdev_class_create_file(&cpu_sysdev_class,
-                                               cpu_state_attr[i]);
-               if (!err)
-                       err = ret;
-       }
-       return err;
-}
-
 /*
  * register_cpu - Setup a sysfs device for a CPU.
  * @cpu - cpu->hotpluggable field set to 1 will generate a control file in
@@ -275,9 +252,6 @@ int __init cpu_dev_init(void)
        int err;
 
        err = sysdev_class_register(&cpu_sysdev_class);
-       if (!err)
-               err = cpu_states_init();
-
 #if defined(CONFIG_SCHED_MC) || defined(CONFIG_SCHED_SMT)
        if (!err)
                err = sched_create_sysfs_power_savings_entries(&cpu_sysdev_class);
@@ -285,3 +259,16 @@ int __init cpu_dev_init(void)
 
        return err;
 }
+
+static struct sysdev_class_attribute *cpu_sysdev_class_attrs[] = {
+#ifdef CONFIG_ARCH_CPU_PROBE_RELEASE
+       &attr_probe,
+       &attr_release,
+#endif
+       &cpu_attrs[0].attr,
+       &cpu_attrs[1].attr,
+       &cpu_attrs[2].attr,
+       &attr_kernel_max,
+       &attr_offline,
+       NULL
+};