2 * sysfs.c - ACPI sysfs interface to userspace.
5 #include <linux/init.h>
6 #include <linux/kernel.h>
7 #include <linux/moduleparam.h>
8 #include <linux/acpi.h>
12 #define _COMPONENT ACPI_SYSTEM_COMPONENT
13 ACPI_MODULE_NAME("sysfs");
15 #ifdef CONFIG_ACPI_DEBUG
17 * ACPI debug sysfs I/F, including:
18 * /sys/modules/acpi/parameters/debug_layer
19 * /sys/modules/acpi/parameters/debug_level
20 * /sys/modules/acpi/parameters/trace_method_name
21 * /sys/modules/acpi/parameters/trace_state
22 * /sys/modules/acpi/parameters/trace_debug_layer
23 * /sys/modules/acpi/parameters/trace_debug_level
34 #define ACPI_DEBUG_INIT(v) { .name = #v, .value = v }
36 static const struct acpi_dlayer acpi_debug_layers[] = {
37 ACPI_DEBUG_INIT(ACPI_UTILITIES),
38 ACPI_DEBUG_INIT(ACPI_HARDWARE),
39 ACPI_DEBUG_INIT(ACPI_EVENTS),
40 ACPI_DEBUG_INIT(ACPI_TABLES),
41 ACPI_DEBUG_INIT(ACPI_NAMESPACE),
42 ACPI_DEBUG_INIT(ACPI_PARSER),
43 ACPI_DEBUG_INIT(ACPI_DISPATCHER),
44 ACPI_DEBUG_INIT(ACPI_EXECUTER),
45 ACPI_DEBUG_INIT(ACPI_RESOURCES),
46 ACPI_DEBUG_INIT(ACPI_CA_DEBUGGER),
47 ACPI_DEBUG_INIT(ACPI_OS_SERVICES),
48 ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER),
49 ACPI_DEBUG_INIT(ACPI_COMPILER),
50 ACPI_DEBUG_INIT(ACPI_TOOLS),
52 ACPI_DEBUG_INIT(ACPI_BUS_COMPONENT),
53 ACPI_DEBUG_INIT(ACPI_AC_COMPONENT),
54 ACPI_DEBUG_INIT(ACPI_BATTERY_COMPONENT),
55 ACPI_DEBUG_INIT(ACPI_BUTTON_COMPONENT),
56 ACPI_DEBUG_INIT(ACPI_SBS_COMPONENT),
57 ACPI_DEBUG_INIT(ACPI_FAN_COMPONENT),
58 ACPI_DEBUG_INIT(ACPI_PCI_COMPONENT),
59 ACPI_DEBUG_INIT(ACPI_POWER_COMPONENT),
60 ACPI_DEBUG_INIT(ACPI_CONTAINER_COMPONENT),
61 ACPI_DEBUG_INIT(ACPI_SYSTEM_COMPONENT),
62 ACPI_DEBUG_INIT(ACPI_THERMAL_COMPONENT),
63 ACPI_DEBUG_INIT(ACPI_MEMORY_DEVICE_COMPONENT),
64 ACPI_DEBUG_INIT(ACPI_VIDEO_COMPONENT),
65 ACPI_DEBUG_INIT(ACPI_PROCESSOR_COMPONENT),
68 static const struct acpi_dlevel acpi_debug_levels[] = {
69 ACPI_DEBUG_INIT(ACPI_LV_INIT),
70 ACPI_DEBUG_INIT(ACPI_LV_DEBUG_OBJECT),
71 ACPI_DEBUG_INIT(ACPI_LV_INFO),
72 ACPI_DEBUG_INIT(ACPI_LV_REPAIR),
74 ACPI_DEBUG_INIT(ACPI_LV_INIT_NAMES),
75 ACPI_DEBUG_INIT(ACPI_LV_PARSE),
76 ACPI_DEBUG_INIT(ACPI_LV_LOAD),
77 ACPI_DEBUG_INIT(ACPI_LV_DISPATCH),
78 ACPI_DEBUG_INIT(ACPI_LV_EXEC),
79 ACPI_DEBUG_INIT(ACPI_LV_NAMES),
80 ACPI_DEBUG_INIT(ACPI_LV_OPREGION),
81 ACPI_DEBUG_INIT(ACPI_LV_BFIELD),
82 ACPI_DEBUG_INIT(ACPI_LV_TABLES),
83 ACPI_DEBUG_INIT(ACPI_LV_VALUES),
84 ACPI_DEBUG_INIT(ACPI_LV_OBJECTS),
85 ACPI_DEBUG_INIT(ACPI_LV_RESOURCES),
86 ACPI_DEBUG_INIT(ACPI_LV_USER_REQUESTS),
87 ACPI_DEBUG_INIT(ACPI_LV_PACKAGE),
89 ACPI_DEBUG_INIT(ACPI_LV_ALLOCATIONS),
90 ACPI_DEBUG_INIT(ACPI_LV_FUNCTIONS),
91 ACPI_DEBUG_INIT(ACPI_LV_OPTIMIZATIONS),
93 ACPI_DEBUG_INIT(ACPI_LV_MUTEX),
94 ACPI_DEBUG_INIT(ACPI_LV_THREADS),
95 ACPI_DEBUG_INIT(ACPI_LV_IO),
96 ACPI_DEBUG_INIT(ACPI_LV_INTERRUPTS),
98 ACPI_DEBUG_INIT(ACPI_LV_AML_DISASSEMBLE),
99 ACPI_DEBUG_INIT(ACPI_LV_VERBOSE_INFO),
100 ACPI_DEBUG_INIT(ACPI_LV_FULL_TABLES),
101 ACPI_DEBUG_INIT(ACPI_LV_EVENTS),
104 static int param_get_debug_layer(char *buffer, const struct kernel_param *kp)
109 result = sprintf(buffer, "%-25s\tHex SET\n", "Description");
111 for (i = 0; i < ARRAY_SIZE(acpi_debug_layers); i++) {
112 result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
113 acpi_debug_layers[i].name,
114 acpi_debug_layers[i].value,
115 (acpi_dbg_layer & acpi_debug_layers[i].value)
119 sprintf(buffer + result, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS",
121 (acpi_dbg_layer & ACPI_ALL_DRIVERS) ==
122 ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer & ACPI_ALL_DRIVERS)
125 sprintf(buffer + result,
126 "--\ndebug_layer = 0x%08X ( * = enabled)\n",
132 static int param_get_debug_level(char *buffer, const struct kernel_param *kp)
137 result = sprintf(buffer, "%-25s\tHex SET\n", "Description");
139 for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) {
140 result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
141 acpi_debug_levels[i].name,
142 acpi_debug_levels[i].value,
143 (acpi_dbg_level & acpi_debug_levels[i].value)
147 sprintf(buffer + result, "--\ndebug_level = 0x%08X (* = enabled)\n",
153 static const struct kernel_param_ops param_ops_debug_layer = {
154 .set = param_set_uint,
155 .get = param_get_debug_layer,
158 static const struct kernel_param_ops param_ops_debug_level = {
159 .set = param_set_uint,
160 .get = param_get_debug_level,
163 module_param_cb(debug_layer, ¶m_ops_debug_layer, &acpi_dbg_layer, 0644);
164 module_param_cb(debug_level, ¶m_ops_debug_level, &acpi_dbg_level, 0644);
166 static char trace_method_name[6];
167 module_param_string(trace_method_name, trace_method_name, 6, 0644);
168 static unsigned int trace_debug_layer;
169 module_param(trace_debug_layer, uint, 0644);
170 static unsigned int trace_debug_level;
171 module_param(trace_debug_level, uint, 0644);
173 static int param_set_trace_state(const char *val, struct kernel_param *kp)
177 if (!strncmp(val, "enable", sizeof("enable") - 1)) {
178 result = acpi_debug_trace(trace_method_name, trace_debug_level,
179 trace_debug_layer, 0);
185 if (!strncmp(val, "disable", sizeof("disable") - 1)) {
187 result = acpi_debug_trace((char *)&name, trace_debug_level,
188 trace_debug_layer, 0);
194 if (!strncmp(val, "1", 1)) {
195 result = acpi_debug_trace(trace_method_name, trace_debug_level,
196 trace_debug_layer, 1);
207 static int param_get_trace_state(char *buffer, struct kernel_param *kp)
209 if (!acpi_gbl_trace_method_name)
210 return sprintf(buffer, "disable");
212 if (acpi_gbl_trace_flags & 1)
213 return sprintf(buffer, "1");
215 return sprintf(buffer, "enable");
220 module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
222 #endif /* CONFIG_ACPI_DEBUG */
225 /* /sys/modules/acpi/parameters/aml_debug_output */
227 module_param_named(aml_debug_output, acpi_gbl_enable_aml_debug_object,
229 MODULE_PARM_DESC(aml_debug_output,
230 "To enable/disable the ACPI Debug Object output.");
232 /* /sys/module/acpi/parameters/acpica_version */
233 static int param_get_acpica_version(char *buffer, struct kernel_param *kp)
237 result = sprintf(buffer, "%x", ACPI_CA_VERSION);
242 module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);
245 * ACPI table sysfs I/F:
246 * /sys/firmware/acpi/tables/
247 * /sys/firmware/acpi/tables/dynamic/
250 static LIST_HEAD(acpi_table_attr_list);
251 static struct kobject *tables_kobj;
252 static struct kobject *dynamic_tables_kobj;
253 static struct kobject *hotplug_kobj;
255 struct acpi_table_attr {
256 struct bin_attribute attr;
259 struct list_head node;
262 static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj,
263 struct bin_attribute *bin_attr, char *buf,
264 loff_t offset, size_t count)
266 struct acpi_table_attr *table_attr =
267 container_of(bin_attr, struct acpi_table_attr, attr);
268 struct acpi_table_header *table_header = NULL;
270 char name[ACPI_NAME_SIZE];
272 if (strncmp(table_attr->name, "NULL", 4))
273 memcpy(name, table_attr->name, ACPI_NAME_SIZE);
275 memcpy(name, "\0\0\0\0", 4);
277 status = acpi_get_table(name, table_attr->instance, &table_header);
278 if (ACPI_FAILURE(status))
281 return memory_read_from_buffer(buf, count, &offset,
282 table_header, table_header->length);
285 static void acpi_table_attr_init(struct acpi_table_attr *table_attr,
286 struct acpi_table_header *table_header)
288 struct acpi_table_header *header = NULL;
289 struct acpi_table_attr *attr = NULL;
291 sysfs_attr_init(&table_attr->attr.attr);
292 if (table_header->signature[0] != '\0')
293 memcpy(table_attr->name, table_header->signature,
296 memcpy(table_attr->name, "NULL", 4);
298 list_for_each_entry(attr, &acpi_table_attr_list, node) {
299 if (!memcmp(table_attr->name, attr->name, ACPI_NAME_SIZE))
300 if (table_attr->instance < attr->instance)
301 table_attr->instance = attr->instance;
303 table_attr->instance++;
305 if (table_attr->instance > 1 || (table_attr->instance == 1 &&
307 (table_header->signature, 2, &header)))
308 sprintf(table_attr->name + ACPI_NAME_SIZE, "%d",
309 table_attr->instance);
311 table_attr->attr.size = table_header->length;
312 table_attr->attr.read = acpi_table_show;
313 table_attr->attr.attr.name = table_attr->name;
314 table_attr->attr.attr.mode = 0400;
320 acpi_sysfs_table_handler(u32 event, void *table, void *context)
322 struct acpi_table_attr *table_attr;
325 case ACPI_TABLE_EVENT_LOAD:
327 kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
331 acpi_table_attr_init(table_attr, table);
332 if (sysfs_create_bin_file(dynamic_tables_kobj,
333 &table_attr->attr)) {
337 list_add_tail(&table_attr->node, &acpi_table_attr_list);
339 case ACPI_TABLE_EVENT_UNLOAD:
341 * we do not need to do anything right now
342 * because the table is not deleted from the
343 * global table list when unloading it.
347 return AE_BAD_PARAMETER;
352 static int acpi_tables_sysfs_init(void)
354 struct acpi_table_attr *table_attr;
355 struct acpi_table_header *table_header = NULL;
360 tables_kobj = kobject_create_and_add("tables", acpi_kobj);
364 dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj);
365 if (!dynamic_tables_kobj)
366 goto err_dynamic_tables;
368 for (table_index = 0;; table_index++) {
369 status = acpi_get_table_by_index(table_index, &table_header);
371 if (status == AE_BAD_PARAMETER)
374 if (ACPI_FAILURE(status))
378 table_attr = kzalloc(sizeof(*table_attr), GFP_KERNEL);
382 acpi_table_attr_init(table_attr, table_header);
383 ret = sysfs_create_bin_file(tables_kobj, &table_attr->attr);
388 list_add_tail(&table_attr->node, &acpi_table_attr_list);
391 kobject_uevent(tables_kobj, KOBJ_ADD);
392 kobject_uevent(dynamic_tables_kobj, KOBJ_ADD);
393 status = acpi_install_table_handler(acpi_sysfs_table_handler, NULL);
395 return ACPI_FAILURE(status) ? -EINVAL : 0;
397 kobject_put(tables_kobj);
403 * Detailed ACPI IRQ counters:
404 * /sys/firmware/acpi/interrupts/
407 u32 acpi_irq_handled;
408 u32 acpi_irq_not_handled;
411 #define COUNT_SCI 1 /* acpi_irq_handled */
412 #define COUNT_SCI_NOT 2 /* acpi_irq_not_handled */
413 #define COUNT_ERROR 3 /* other */
414 #define NUM_COUNTERS_EXTRA 4
416 struct event_counter {
421 static struct event_counter *all_counters;
423 static u32 num_counters;
424 static struct attribute **all_attrs;
425 static u32 acpi_gpe_count;
427 static struct attribute_group interrupt_stats_attr_group = {
428 .name = "interrupts",
431 static struct kobj_attribute *counter_attrs;
433 static void delete_gpe_attr_array(void)
435 struct event_counter *tmp = all_counters;
443 for (i = 0; i < num_gpes; i++)
444 kfree(counter_attrs[i].attr.name);
446 kfree(counter_attrs);
453 static void gpe_count(u32 gpe_number)
460 if (gpe_number < num_gpes)
461 all_counters[gpe_number].count++;
463 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
464 COUNT_ERROR].count++;
469 static void fixed_event_count(u32 event_number)
474 if (event_number < ACPI_NUM_FIXED_EVENTS)
475 all_counters[num_gpes + event_number].count++;
477 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
478 COUNT_ERROR].count++;
483 static void acpi_global_event_handler(u32 event_type, acpi_handle device,
484 u32 event_number, void *context)
486 if (event_type == ACPI_EVENT_TYPE_GPE)
487 gpe_count(event_number);
489 if (event_type == ACPI_EVENT_TYPE_FIXED)
490 fixed_event_count(event_number);
493 static int get_status(u32 index, acpi_event_status *status,
498 if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
501 if (index < num_gpes) {
502 result = acpi_get_gpe_device(index, handle);
504 ACPI_EXCEPTION((AE_INFO, AE_NOT_FOUND,
505 "Invalid GPE 0x%x", index));
508 result = acpi_get_gpe_status(*handle, index, status);
509 } else if (index < (num_gpes + ACPI_NUM_FIXED_EVENTS))
510 result = acpi_get_event_status(index - num_gpes, status);
516 static ssize_t counter_show(struct kobject *kobj,
517 struct kobj_attribute *attr, char *buf)
519 int index = attr - counter_attrs;
522 acpi_event_status status;
525 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count =
527 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count =
528 acpi_irq_not_handled;
529 all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count =
531 size = sprintf(buf, "%8u", all_counters[index].count);
533 /* "gpe_all" or "sci" */
534 if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
537 result = get_status(index, &status, &handle);
541 if (!(status & ACPI_EVENT_FLAG_HAS_HANDLER))
542 size += sprintf(buf + size, " invalid");
543 else if (status & ACPI_EVENT_FLAG_ENABLED)
544 size += sprintf(buf + size, " enabled");
545 else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
546 size += sprintf(buf + size, " wake_enabled");
548 size += sprintf(buf + size, " disabled");
551 size += sprintf(buf + size, "\n");
552 return result ? result : size;
556 * counter_set() sets the specified counter.
557 * setting the total "sci" file to any value clears all counters.
558 * enable/disable/clear a gpe/fixed event in user space.
560 static ssize_t counter_set(struct kobject *kobj,
561 struct kobj_attribute *attr, const char *buf,
564 int index = attr - counter_attrs;
565 acpi_event_status status;
570 if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
572 for (i = 0; i < num_counters; ++i)
573 all_counters[i].count = 0;
575 acpi_irq_handled = 0;
576 acpi_irq_not_handled = 0;
580 /* show the event status for both GPEs and Fixed Events */
581 result = get_status(index, &status, &handle);
585 if (!(status & ACPI_EVENT_FLAG_HAS_HANDLER)) {
586 printk(KERN_WARNING PREFIX
587 "Can not change Invalid GPE/Fixed Event status\n");
591 if (index < num_gpes) {
592 if (!strcmp(buf, "disable\n") &&
593 (status & ACPI_EVENT_FLAG_ENABLED))
594 result = acpi_disable_gpe(handle, index);
595 else if (!strcmp(buf, "enable\n") &&
596 !(status & ACPI_EVENT_FLAG_ENABLED))
597 result = acpi_enable_gpe(handle, index);
598 else if (!strcmp(buf, "clear\n") &&
599 (status & ACPI_EVENT_FLAG_SET))
600 result = acpi_clear_gpe(handle, index);
601 else if (!kstrtoul(buf, 0, &tmp))
602 all_counters[index].count = tmp;
605 } else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) {
606 int event = index - num_gpes;
607 if (!strcmp(buf, "disable\n") &&
608 (status & ACPI_EVENT_FLAG_ENABLED))
609 result = acpi_disable_event(event, ACPI_NOT_ISR);
610 else if (!strcmp(buf, "enable\n") &&
611 !(status & ACPI_EVENT_FLAG_ENABLED))
612 result = acpi_enable_event(event, ACPI_NOT_ISR);
613 else if (!strcmp(buf, "clear\n") &&
614 (status & ACPI_EVENT_FLAG_SET))
615 result = acpi_clear_event(event);
616 else if (!kstrtoul(buf, 0, &tmp))
617 all_counters[index].count = tmp;
621 all_counters[index].count = strtoul(buf, NULL, 0);
623 if (ACPI_FAILURE(result))
626 return result ? result : size;
629 void acpi_irq_stats_init(void)
637 num_gpes = acpi_current_gpe_count;
638 num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;
640 all_attrs = kzalloc(sizeof(struct attribute *) * (num_counters + 1),
642 if (all_attrs == NULL)
645 all_counters = kzalloc(sizeof(struct event_counter) * (num_counters),
647 if (all_counters == NULL)
650 status = acpi_install_global_event_handler(acpi_global_event_handler, NULL);
651 if (ACPI_FAILURE(status))
654 counter_attrs = kzalloc(sizeof(struct kobj_attribute) * (num_counters),
656 if (counter_attrs == NULL)
659 for (i = 0; i < num_counters; ++i) {
664 sprintf(buffer, "gpe%02X", i);
665 else if (i == num_gpes + ACPI_EVENT_PMTIMER)
666 sprintf(buffer, "ff_pmtimer");
667 else if (i == num_gpes + ACPI_EVENT_GLOBAL)
668 sprintf(buffer, "ff_gbl_lock");
669 else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON)
670 sprintf(buffer, "ff_pwr_btn");
671 else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON)
672 sprintf(buffer, "ff_slp_btn");
673 else if (i == num_gpes + ACPI_EVENT_RTC)
674 sprintf(buffer, "ff_rt_clk");
675 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE)
676 sprintf(buffer, "gpe_all");
677 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)
678 sprintf(buffer, "sci");
679 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT)
680 sprintf(buffer, "sci_not");
681 else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)
682 sprintf(buffer, "error");
684 sprintf(buffer, "bug%02X", i);
686 name = kstrdup(buffer, GFP_KERNEL);
690 sysfs_attr_init(&counter_attrs[i].attr);
691 counter_attrs[i].attr.name = name;
692 counter_attrs[i].attr.mode = 0644;
693 counter_attrs[i].show = counter_show;
694 counter_attrs[i].store = counter_set;
696 all_attrs[i] = &counter_attrs[i].attr;
699 interrupt_stats_attr_group.attrs = all_attrs;
700 if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group))
704 delete_gpe_attr_array();
708 static void __exit interrupt_stats_exit(void)
710 sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group);
712 delete_gpe_attr_array();
718 acpi_show_profile(struct device *dev, struct device_attribute *attr,
721 return sprintf(buf, "%d\n", acpi_gbl_FADT.preferred_profile);
724 static const struct device_attribute pm_profile_attr =
725 __ATTR(pm_profile, S_IRUGO, acpi_show_profile, NULL);
727 static ssize_t hotplug_enabled_show(struct kobject *kobj,
728 struct kobj_attribute *attr, char *buf)
730 struct acpi_hotplug_profile *hotplug = to_acpi_hotplug_profile(kobj);
732 return sprintf(buf, "%d\n", hotplug->enabled);
735 static ssize_t hotplug_enabled_store(struct kobject *kobj,
736 struct kobj_attribute *attr,
737 const char *buf, size_t size)
739 struct acpi_hotplug_profile *hotplug = to_acpi_hotplug_profile(kobj);
742 if (kstrtouint(buf, 10, &val) || val > 1)
745 acpi_scan_hotplug_enabled(hotplug, val);
749 static struct kobj_attribute hotplug_enabled_attr =
750 __ATTR(enabled, S_IRUGO | S_IWUSR, hotplug_enabled_show,
751 hotplug_enabled_store);
753 static struct attribute *hotplug_profile_attrs[] = {
754 &hotplug_enabled_attr.attr,
758 static struct kobj_type acpi_hotplug_profile_ktype = {
759 .sysfs_ops = &kobj_sysfs_ops,
760 .default_attrs = hotplug_profile_attrs,
763 void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
771 error = kobject_init_and_add(&hotplug->kobj,
772 &acpi_hotplug_profile_ktype, hotplug_kobj, "%s", name);
776 kobject_uevent(&hotplug->kobj, KOBJ_ADD);
780 pr_err(PREFIX "Unable to add hotplug profile '%s'\n", name);
783 static ssize_t force_remove_show(struct kobject *kobj,
784 struct kobj_attribute *attr, char *buf)
786 return sprintf(buf, "%d\n", !!acpi_force_hot_remove);
789 static ssize_t force_remove_store(struct kobject *kobj,
790 struct kobj_attribute *attr,
791 const char *buf, size_t size)
796 ret = strtobool(buf, &val);
800 lock_device_hotplug();
801 acpi_force_hot_remove = val;
802 unlock_device_hotplug();
806 static const struct kobj_attribute force_remove_attr =
807 __ATTR(force_remove, S_IRUGO | S_IWUSR, force_remove_show,
810 int __init acpi_sysfs_init(void)
814 result = acpi_tables_sysfs_init();
818 hotplug_kobj = kobject_create_and_add("hotplug", acpi_kobj);
819 result = sysfs_create_file(hotplug_kobj, &force_remove_attr.attr);
823 result = sysfs_create_file(acpi_kobj, &pm_profile_attr.attr);