#include <acpi/acpi_drivers.h>
#include <acpi/processor.h>
+#define PREFIX "ACPI: "
+
#define ACPI_PROCESSOR_CLASS "processor"
#define ACPI_PROCESSOR_DEVICE_NAME "Processor"
#define ACPI_PROCESSOR_FILE_INFO "info"
MODULE_LICENSE("GPL");
static int acpi_processor_add(struct acpi_device *device);
-static int acpi_processor_start(struct acpi_device *device);
static int acpi_processor_remove(struct acpi_device *device, int type);
+#ifdef CONFIG_ACPI_PROCFS
static int acpi_processor_info_open_fs(struct inode *inode, struct file *file);
+#endif
static void acpi_processor_notify(struct acpi_device *device, u32 event);
static acpi_status acpi_processor_hotadd_init(acpi_handle handle, int *p_cpu);
static int acpi_processor_handle_eject(struct acpi_processor *pr);
.ops = {
.add = acpi_processor_add,
.remove = acpi_processor_remove,
- .start = acpi_processor_start,
.suspend = acpi_processor_suspend,
.resume = acpi_processor_resume,
.notify = acpi_processor_notify,
#define INSTALL_NOTIFY_HANDLER 1
#define UNINSTALL_NOTIFY_HANDLER 2
-
+#ifdef CONFIG_ACPI_PROCFS
static const struct file_operations acpi_processor_info_fops = {
.owner = THIS_MODULE,
.open = acpi_processor_info_open_fs,
.llseek = seq_lseek,
.release = single_release,
};
+#endif
DEFINE_PER_CPU(struct acpi_processor *, processors);
struct acpi_processor_errata errata __read_mostly;
FS Interface (/proc)
-------------------------------------------------------------------------- */
+#ifdef CONFIG_ACPI_PROCFS
static struct proc_dir_entry *acpi_processor_dir = NULL;
static int acpi_processor_info_seq_show(struct seq_file *seq, void *offset)
return -EIO;
return 0;
}
-
static int acpi_processor_remove_fs(struct acpi_device *device)
{
return 0;
}
+#else
+static inline int acpi_processor_add_fs(struct acpi_device *device)
+{
+ return 0;
+}
+static inline int acpi_processor_remove_fs(struct acpi_device *device)
+{
+ return 0;
+}
+#endif
/* Use the acpiid in MADT to map cpus in case of SMP */
static DEFINE_PER_CPU(void *, processor_device_array);
-static int __cpuinit acpi_processor_start(struct acpi_device *device)
-{
- int result = 0;
- struct acpi_processor *pr;
- struct sys_device *sysdev;
-
- pr = acpi_driver_data(device);
-
- result = acpi_processor_get_info(device);
- if (result) {
- /* Processor is physically not present */
- return 0;
- }
-
- BUG_ON((pr->id >= nr_cpu_ids) || (pr->id < 0));
-
- /*
- * Buggy BIOS check
- * ACPI id of processors can be reported wrongly by the BIOS.
- * Don't trust it blindly
- */
- if (per_cpu(processor_device_array, pr->id) != NULL &&
- per_cpu(processor_device_array, pr->id) != device) {
- printk(KERN_WARNING "BIOS reported wrong ACPI id "
- "for the processor\n");
- return -ENODEV;
- }
- per_cpu(processor_device_array, pr->id) = device;
-
- per_cpu(processors, pr->id) = pr;
-
- result = acpi_processor_add_fs(device);
- if (result)
- goto end;
-
- sysdev = get_cpu_sysdev(pr->id);
- if (sysfs_create_link(&device->dev.kobj, &sysdev->kobj, "sysdev"))
- return -EFAULT;
-
- /* _PDC call should be done before doing anything else (if reqd.). */
- arch_acpi_processor_init_pdc(pr);
- acpi_processor_set_pdc(pr);
- arch_acpi_processor_cleanup_pdc(pr);
-
-#ifdef CONFIG_CPU_FREQ
- acpi_processor_ppc_has_changed(pr);
-#endif
- acpi_processor_get_throttling_info(pr);
- acpi_processor_get_limit_info(pr);
-
-
- acpi_processor_power_init(pr, device);
-
- pr->cdev = thermal_cooling_device_register("Processor", device,
- &processor_cooling_ops);
- if (IS_ERR(pr->cdev)) {
- result = PTR_ERR(pr->cdev);
- goto end;
- }
-
- dev_info(&device->dev, "registered as cooling_device%d\n",
- pr->cdev->id);
-
- result = sysfs_create_link(&device->dev.kobj,
- &pr->cdev->device.kobj,
- "thermal_cooling");
- if (result)
- printk(KERN_ERR PREFIX "Create sysfs link\n");
- result = sysfs_create_link(&pr->cdev->device.kobj,
- &device->dev.kobj,
- "device");
- if (result)
- printk(KERN_ERR PREFIX "Create sysfs link\n");
-
- if (pr->flags.throttling) {
- printk(KERN_INFO PREFIX "%s [%s] (supports",
- acpi_device_name(device), acpi_device_bid(device));
- printk(" %d throttling states", pr->throttling.state_count);
- printk(")\n");
- }
-
- end:
-
- return result;
-}
-
static void acpi_processor_notify(struct acpi_device *device, u32 event)
{
struct acpi_processor *pr = acpi_driver_data(device);
static int acpi_processor_add(struct acpi_device *device)
{
struct acpi_processor *pr = NULL;
-
-
- if (!device)
- return -EINVAL;
+ int result = 0;
+ struct sys_device *sysdev;
pr = kzalloc(sizeof(struct acpi_processor), GFP_KERNEL);
if (!pr)
strcpy(acpi_device_class(device), ACPI_PROCESSOR_CLASS);
device->driver_data = pr;
+ result = acpi_processor_get_info(device);
+ if (result) {
+ /* Processor is physically not present */
+ return 0;
+ }
+
+ BUG_ON((pr->id >= nr_cpu_ids) || (pr->id < 0));
+
+ /*
+ * Buggy BIOS check
+ * ACPI id of processors can be reported wrongly by the BIOS.
+ * Don't trust it blindly
+ */
+ if (per_cpu(processor_device_array, pr->id) != NULL &&
+ per_cpu(processor_device_array, pr->id) != device) {
+ printk(KERN_WARNING "BIOS reported wrong ACPI id "
+ "for the processor\n");
+ result = -ENODEV;
+ goto err_free_cpumask;
+ }
+ per_cpu(processor_device_array, pr->id) = device;
+
+ per_cpu(processors, pr->id) = pr;
+
+ result = acpi_processor_add_fs(device);
+ if (result)
+ goto err_free_cpumask;
+
+ sysdev = get_cpu_sysdev(pr->id);
+ if (sysfs_create_link(&device->dev.kobj, &sysdev->kobj, "sysdev")) {
+ result = -EFAULT;
+ goto err_remove_fs;
+ }
+
+ /* _PDC call should be done before doing anything else (if reqd.). */
+ arch_acpi_processor_init_pdc(pr);
+ acpi_processor_set_pdc(pr);
+ arch_acpi_processor_cleanup_pdc(pr);
+
+#ifdef CONFIG_CPU_FREQ
+ acpi_processor_ppc_has_changed(pr);
+#endif
+ acpi_processor_get_throttling_info(pr);
+ acpi_processor_get_limit_info(pr);
+
+
+ acpi_processor_power_init(pr, device);
+
+ pr->cdev = thermal_cooling_device_register("Processor", device,
+ &processor_cooling_ops);
+ if (IS_ERR(pr->cdev)) {
+ result = PTR_ERR(pr->cdev);
+ goto err_power_exit;
+ }
+
+ dev_info(&device->dev, "registered as cooling_device%d\n",
+ pr->cdev->id);
+
+ result = sysfs_create_link(&device->dev.kobj,
+ &pr->cdev->device.kobj,
+ "thermal_cooling");
+ if (result) {
+ printk(KERN_ERR PREFIX "Create sysfs link\n");
+ goto err_thermal_unregister;
+ }
+ result = sysfs_create_link(&pr->cdev->device.kobj,
+ &device->dev.kobj,
+ "device");
+ if (result) {
+ printk(KERN_ERR PREFIX "Create sysfs link\n");
+ goto err_remove_sysfs;
+ }
+
+ if (pr->flags.throttling) {
+ printk(KERN_INFO PREFIX "%s [%s] (supports",
+ acpi_device_name(device), acpi_device_bid(device));
+ printk(" %d throttling states", pr->throttling.state_count);
+ printk(")\n");
+ }
+
return 0;
+
+err_remove_sysfs:
+ sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
+err_thermal_unregister:
+ thermal_cooling_device_unregister(pr->cdev);
+err_power_exit:
+ acpi_processor_power_exit(pr, device);
+err_remove_fs:
+ acpi_processor_remove_fs(device);
+err_free_cpumask:
+ free_cpumask_var(pr->throttling.shared_cpu_map);
+
+ return result;
}
static int acpi_processor_remove(struct acpi_device *device, int type)
{
acpi_handle phandle;
struct acpi_device *pdev;
- struct acpi_processor *pr;
if (acpi_get_parent(handle, &phandle)) {
return -ENODEV;
}
- acpi_bus_start(*device);
-
- pr = acpi_driver_data(*device);
- if (!pr)
- return -ENODEV;
-
- if ((pr->id >= 0) && (pr->id < nr_cpu_ids)) {
- kobject_uevent(&(*device)->dev.kobj, KOBJ_ONLINE);
- }
return 0;
}
"Unable to add the device\n");
break;
}
-
- pr = acpi_driver_data(device);
- if (!pr) {
- printk(KERN_ERR PREFIX "Driver data is NULL\n");
- break;
- }
-
- if (pr->id >= 0 && (pr->id < nr_cpu_ids)) {
- kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
- break;
- }
-
- result = acpi_processor_start(device);
- if ((!result) && ((pr->id >= 0) && (pr->id < nr_cpu_ids))) {
- kobject_uevent(&device->dev.kobj, KOBJ_ONLINE);
- } else {
- printk(KERN_ERR PREFIX "Device [%s] failed to start\n",
- acpi_device_bid(device));
- }
break;
case ACPI_NOTIFY_EJECT_REQUEST:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Driver data is NULL, dropping EJECT\n");
return;
}
-
- if ((pr->id < nr_cpu_ids) && (cpu_present(pr->id)))
- kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE);
break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
(struct acpi_table_header **)&madt)))
madt = NULL;
#endif
-
+#ifdef CONFIG_ACPI_PROCFS
acpi_processor_dir = proc_mkdir(ACPI_PROCESSOR_CLASS, acpi_root_dir);
if (!acpi_processor_dir)
return -ENOMEM;
-
+#endif
/*
* Check whether the system is DMI table. If yes, OSPM
* should not use mwait for CPU-states.
cpuidle_unregister_driver(&acpi_idle_driver);
out_proc:
+#ifdef CONFIG_ACPI_PROCFS
remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir);
+#endif
return result;
}
cpuidle_unregister_driver(&acpi_idle_driver);
+#ifdef CONFIG_ACPI_PROCFS
remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir);
+#endif
return;
}
git.samba.org / sfrench / cifs-2.6.git / blobdiff