ACPI: Make ACPI processor proc I/F depend on the ACPI_PROCFS

Now whether the ACPI processor proc I/F is registered depends on the
CONFIG_PROC. It had better depend on the CONFIG_ACPI_PROCFS.
When the CONFIG_ACPI_PROCFS is unset in kernel configuration, the
ACPI processor proc I/F won't be registered.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/Kconfig

@@ -60,7 +60,11 @@ config ACPI_PROCFS
 	  /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
 	  /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
 	  /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
-
+	  /proc/acpi/processor/*/power (/sys/devices/system/cpu/*/cpuidle/*)
+	  /proc/acpi/processor/*/performance (/sys/devices/system/cpu/*/
+		cpufreq/*)
+	  /proc/acpi/processor/*/throttling (/sys/class/thermal/
+		cooling_device*/*)
 	  This option has no effect on /proc/acpi/ files
 	  and functions which do not yet exist in /sys.
 

drivers/acpi/processor_core.c

@@ -81,7 +81,9 @@ 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);
@@ -110,14 +112,15 @@ static struct acpi_driver acpi_processor_driver = {
 
 #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,
 	.read = seq_read,
 	.llseek = seq_lseek,
 	.release = single_release,
 };
+#endif
 
 DEFINE_PER_CPU(struct acpi_processor *, processors);
 struct acpi_processor_errata errata __read_mostly;
@@ -316,6 +319,7 @@ static int acpi_processor_set_pdc(struct acpi_processor *pr)
                               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)
@@ -388,7 +392,6 @@ static int acpi_processor_add_fs(struct acpi_device *device)
 		return -EIO;
 	return 0;
 }
-
 static int acpi_processor_remove_fs(struct acpi_device *device)
 {
 
@@ -405,6 +408,16 @@ 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 */
 
@@ -1147,11 +1160,11 @@ static int __init acpi_processor_init(void)
 				(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.
@@ -1179,7 +1192,9 @@ static int __init acpi_processor_init(void)
 	cpuidle_unregister_driver(&acpi_idle_driver);
 
 out_proc:
+#ifdef CONFIG_ACPI_PROCFS
 	remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir);
+#endif
 
 	return result;
 }
@@ -1196,7 +1211,9 @@ static void __exit acpi_processor_exit(void)
 
 	cpuidle_unregister_driver(&acpi_idle_driver);
 
+#ifdef CONFIG_ACPI_PROCFS
 	remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir);
+#endif
 
 	return;
 }

drivers/acpi/processor_idle.c

@@ -679,6 +679,7 @@ static int acpi_processor_get_power_info(struct acpi_processor *pr)
 	return 0;
 }
 
+#ifdef CONFIG_ACPI_PROCFS
 static int acpi_processor_power_seq_show(struct seq_file *seq, void *offset)
 {
 	struct acpi_processor *pr = seq->private;
@@ -758,7 +759,7 @@ static const struct file_operations acpi_processor_power_fops = {
 	.llseek = seq_lseek,
 	.release = single_release,
 };
-
+#endif
 
 /**
  * acpi_idle_bm_check - checks if bus master activity was detected
@@ -1216,14 +1217,15 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
 				       pr->power.states[i].type);
 		printk(")\n");
 	}
-
+#ifdef CONFIG_ACPI_PROCFS
 	/* 'power' [R] */
 	entry = proc_create_data(ACPI_PROCESSOR_FILE_POWER,
 				 S_IRUGO, acpi_device_dir(device),
 				 &acpi_processor_power_fops,
 				 acpi_driver_data(device));
 	if (!entry)
 		return -EIO;
+#endif
 	return 0;
 }
 
@@ -1236,9 +1238,11 @@ int acpi_processor_power_exit(struct acpi_processor *pr,
 	cpuidle_unregister_device(&pr->power.dev);
 	pr->flags.power_setup_done = 0;
 
+#ifdef CONFIG_ACPI_PROCFS
 	if (acpi_device_dir(device))
 		remove_proc_entry(ACPI_PROCESSOR_FILE_POWER,
 				  acpi_device_dir(device));
+#endif
 
 	return 0;
 }

drivers/acpi/processor_thermal.c

@@ -438,7 +438,7 @@ struct thermal_cooling_device_ops processor_cooling_ops = {
 };
 
 /* /proc interface */
-
+#ifdef CONFIG_ACPI_PROCFS
 static int acpi_processor_limit_seq_show(struct seq_file *seq, void *offset)
 {
 	struct acpi_processor *pr = (struct acpi_processor *)seq->private;
@@ -517,3 +517,4 @@ const struct file_operations acpi_processor_limit_fops = {
 	.llseek = seq_lseek,
 	.release = single_release,
 };
+#endif

drivers/acpi/processor_throttling.c

@@ -1214,7 +1214,7 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr)
 }
 
 /* proc interface */
-
+#ifdef CONFIG_ACPI_PROCFS
 static int acpi_processor_throttling_seq_show(struct seq_file *seq,
 					      void *offset)
 {
@@ -1322,3 +1322,4 @@ const struct file_operations acpi_processor_throttling_fops = {
 	.llseek = seq_lseek,
 	.release = single_release,
 };
+#endif