sysdev: fix debugging statements in registration code.

[pandora-kernel.git] / drivers / base / cpu.c

diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index 499b003..e38dfed 100644 (file)
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -18,7 +18,7 @@ struct sysdev_class cpu_sysdev_class = {
 };
 EXPORT_SYMBOL(cpu_sysdev_class);
 
-static struct sys_device *cpu_sys_devices[NR_CPUS];
+static DEFINE_PER_CPU(struct sys_device *, cpu_sys_devices);
 
 #ifdef CONFIG_HOTPLUG_CPU
 static ssize_t show_online(struct sys_device *dev, char *buf)
@@ -28,7 +28,7 @@ static ssize_t show_online(struct sys_device *dev, char *buf)
        return sprintf(buf, "%u\n", !!cpu_online(cpu->sysdev.id));
 }
 
-static ssize_t store_online(struct sys_device *dev, const char *buf,
+static ssize_t __ref store_online(struct sys_device *dev, const char *buf,
                            size_t count)
 {
        struct cpu *cpu = container_of(dev, struct cpu, sysdev);
@@ -55,7 +55,7 @@ static ssize_t store_online(struct sys_device *dev, const char *buf,
 }
 static SYSDEV_ATTR(online, 0644, show_online, store_online);
 
-static void __devinit register_cpu_control(struct cpu *cpu)
+static void __cpuinit register_cpu_control(struct cpu *cpu)
 {
        sysdev_create_file(&cpu->sysdev, &attr_online);
 }
@@ -68,7 +68,7 @@ void unregister_cpu(struct cpu *cpu)
        sysdev_remove_file(&cpu->sysdev, &attr_online);
 
        sysdev_unregister(&cpu->sysdev);
-       cpu_sys_devices[logical_cpu] = NULL;
+       per_cpu(cpu_sys_devices, logical_cpu) = NULL;
        return;
 }
 #else /* ... !CONFIG_HOTPLUG_CPU */
@@ -102,6 +102,51 @@ static ssize_t show_crash_notes(struct sys_device *dev, char *buf)
 static SYSDEV_ATTR(crash_notes, 0400, show_crash_notes, NULL);
 #endif
 
+/*
+ * Print cpu online, possible, present, and system maps
+ */
+static ssize_t print_cpus_map(char *buf, cpumask_t *map)
+{
+       int n = cpulist_scnprintf(buf, PAGE_SIZE-2, *map);
+
+       buf[n++] = '\n';
+       buf[n] = '\0';
+       return n;
+}
+
+#define        print_cpus_func(type) \
+static ssize_t print_cpus_##type(struct sysdev_class *class, char *buf)        \
+{                                                                      \
+       return print_cpus_map(buf, &cpu_##type##_map);                  \
+}                                                                      \
+struct sysdev_class_attribute attr_##type##_map =                      \
+       _SYSDEV_CLASS_ATTR(type, 0444, print_cpus_##type, NULL)
+
+print_cpus_func(online);
+print_cpus_func(possible);
+print_cpus_func(present);
+
+struct sysdev_class_attribute *cpu_state_attr[] = {
+       &attr_online_map,
+       &attr_possible_map,
+       &attr_present_map,
+};
+
+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
@@ -122,7 +167,7 @@ int __cpuinit register_cpu(struct cpu *cpu, int num)
        if (!error && cpu->hotpluggable)
                register_cpu_control(cpu);
        if (!error)
-               cpu_sys_devices[num] = &cpu->sysdev;
+               per_cpu(cpu_sys_devices, num) = &cpu->sysdev;
        if (!error)
                register_cpu_under_node(num, cpu_to_node(num));
 
@@ -135,8 +180,8 @@ int __cpuinit register_cpu(struct cpu *cpu, int num)
 
 struct sys_device *get_cpu_sysdev(unsigned cpu)
 {
-       if (cpu < NR_CPUS)
-               return cpu_sys_devices[cpu];
+       if (cpu < nr_cpu_ids && cpu_possible(cpu))
+               return per_cpu(cpu_sys_devices, cpu);
        else
                return NULL;
 }
@@ -147,6 +192,9 @@ 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);