1 // SPDX-License-Identifier: GPL-2.0-only
3  * kernel/ksysfs.c - sysfs attributes in /sys/kernel, which
40 				  struct kobj_attribute *attr, char *buf)  in uevent_seqnum_show()  argument
48 				  struct kobj_attribute *attr, char *buf)  in cpu_byteorder_show()  argument
56 				 struct kobj_attribute *attr, char *buf)  in address_bits_show()  argument
65 				  struct kobj_attribute *attr, char *buf)  in uevent_helper_show()  argument
70 				   struct kobj_attribute *attr,  in uevent_helper_store()  argument
74 		return -ENOENT;  in uevent_helper_store()
77 	if (count && uevent_helper[count-1] == '\n')  in uevent_helper_store()
78 		uevent_helper[count-1] = '\0';  in uevent_helper_store()
86 				  struct kobj_attribute *attr, char *buf)  in profiling_show()  argument
91 				   struct kobj_attribute *attr,  in profiling_store()  argument
104 		return -EEXIST;  in profiling_store()
124 				 struct kobj_attribute *attr, char *buf)  in kexec_loaded_show()  argument
132 				       struct kobj_attribute *attr, char *buf)  in kexec_crash_loaded_show()  argument
139 				       struct kobj_attribute *attr, char *buf)  in kexec_crash_size_show()  argument
149 				   struct kobj_attribute *attr,  in kexec_crash_size_store()  argument
152 	unsigned long cnt;  in kexec_crash_size_store()  local
155 	if (kstrtoul(buf, 0, &cnt))  in kexec_crash_size_store()
156 		return -EINVAL;  in kexec_crash_size_store()
158 	ret = crash_shrink_memory(cnt);  in kexec_crash_size_store()
169 			       struct kobj_attribute *attr, char *buf)  in vmcoreinfo_show()  argument
179 			       struct kobj_attribute *attr, char *buf)  in crash_elfcorehdr_size_show()  argument
193 				  struct kobj_attribute *attr, char *buf)  in fscaps_show()  argument
202 				  struct kobj_attribute *attr, char *buf)  in rcu_expedited_show()  argument
207 				   struct kobj_attribute *attr,  in rcu_expedited_store()  argument
211 		return -EINVAL;  in rcu_expedited_store()
219 			       struct kobj_attribute *attr, char *buf)  in rcu_normal_show()  argument
224 				struct kobj_attribute *attr,  in rcu_normal_store()  argument
228 		return -EINVAL;  in rcu_normal_store()
240 #define	notes_size (&__stop_notes - &__start_notes)
251 	.attr = {
252 		.name = "notes",
262 	&fscaps_attr.attr,
263 	&uevent_seqnum_attr.attr,
264 	&cpu_byteorder_attr.attr,
265 	&address_bits_attr.attr,
267 	&uevent_helper_attr.attr,
270 	&profiling_attr.attr,
273 	&kexec_loaded_attr.attr,
275 	&kexec_crash_loaded_attr.attr,
276 	&kexec_crash_size_attr.attr,
280 	&vmcoreinfo_attr.attr,
282 	&crash_elfcorehdr_size_attr.attr,
286 	&rcu_expedited_attr.attr,
287 	&rcu_normal_attr.attr,
302 		error = -ENOMEM;  in ksysfs_init()