1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Dynamic loading of modules into the kernel.
5 * Rewritten by Richard Henderson <rth@tamu.edu> Dec 1996
6 * Rewritten again by Rusty Russell, 2002
9 #ifndef _LINUX_MODULE_H
10 #define _LINUX_MODULE_H
12 #include <linux/list.h>
13 #include <linux/stat.h>
14 #include <linux/buildid.h>
15 #include <linux/compiler.h>
16 #include <linux/cache.h>
17 #include <linux/kmod.h>
18 #include <linux/init.h>
19 #include <linux/elf.h>
20 #include <linux/stringify.h>
21 #include <linux/kobject.h>
22 #include <linux/moduleparam.h>
23 #include <linux/jump_label.h>
24 #include <linux/export.h>
25 #include <linux/rbtree_latch.h>
26 #include <linux/error-injection.h>
27 #include <linux/tracepoint-defs.h>
28 #include <linux/srcu.h>
29 #include <linux/static_call_types.h>
31 #include <linux/percpu.h>
32 #include <asm/module.h>
34 #define MODULE_NAME_LEN MAX_PARAM_PREFIX_LEN
36 struct modversion_info {
38 char name[MODULE_NAME_LEN];
42 struct exception_table_entry;
44 struct module_kobject {
47 struct kobject *drivers_dir;
48 struct module_param_attrs *mp;
49 struct completion *kobj_completion;
52 struct module_attribute {
53 struct attribute attr;
54 ssize_t (*show)(struct module_attribute *, struct module_kobject *,
56 ssize_t (*store)(struct module_attribute *, struct module_kobject *,
57 const char *, size_t count);
58 void (*setup)(struct module *, const char *);
59 int (*test)(struct module *);
60 void (*free)(struct module *);
63 struct module_version_attribute {
64 struct module_attribute mattr;
65 const char *module_name;
69 extern ssize_t __modver_version_show(struct module_attribute *,
70 struct module_kobject *, char *);
72 extern struct module_attribute module_uevent;
74 /* These are either module local, or the kernel's dummy ones. */
75 extern int init_module(void);
76 extern void cleanup_module(void);
80 * module_init() - driver initialization entry point
81 * @x: function to be run at kernel boot time or module insertion
83 * module_init() will either be called during do_initcalls() (if
84 * builtin) or at module insertion time (if a module). There can only
87 #define module_init(x) __initcall(x);
90 * module_exit() - driver exit entry point
91 * @x: function to be run when driver is removed
93 * module_exit() will wrap the driver clean-up code
94 * with cleanup_module() when used with rmmod when
95 * the driver is a module. If the driver is statically
96 * compiled into the kernel, module_exit() has no effect.
97 * There can only be one per module.
99 #define module_exit(x) __exitcall(x);
104 * In most cases loadable modules do not need custom
105 * initcall levels. There are still some valid cases where
106 * a driver may be needed early if built in, and does not
107 * matter when built as a loadable module. Like bus
108 * snooping debug drivers.
110 #define early_initcall(fn) module_init(fn)
111 #define core_initcall(fn) module_init(fn)
112 #define core_initcall_sync(fn) module_init(fn)
113 #define postcore_initcall(fn) module_init(fn)
114 #define postcore_initcall_sync(fn) module_init(fn)
115 #define arch_initcall(fn) module_init(fn)
116 #define subsys_initcall(fn) module_init(fn)
117 #define subsys_initcall_sync(fn) module_init(fn)
118 #define fs_initcall(fn) module_init(fn)
119 #define fs_initcall_sync(fn) module_init(fn)
120 #define rootfs_initcall(fn) module_init(fn)
121 #define device_initcall(fn) module_init(fn)
122 #define device_initcall_sync(fn) module_init(fn)
123 #define late_initcall(fn) module_init(fn)
124 #define late_initcall_sync(fn) module_init(fn)
126 #define console_initcall(fn) module_init(fn)
128 /* Each module must use one module_init(). */
129 #define module_init(initfn) \
130 static inline initcall_t __maybe_unused __inittest(void) \
132 int init_module(void) __copy(initfn) \
133 __attribute__((alias(#initfn))); \
134 ___ADDRESSABLE(init_module, __initdata);
136 /* This is only required if you want to be unloadable. */
137 #define module_exit(exitfn) \
138 static inline exitcall_t __maybe_unused __exittest(void) \
140 void cleanup_module(void) __copy(exitfn) \
141 __attribute__((alias(#exitfn))); \
142 ___ADDRESSABLE(cleanup_module, __exitdata);
146 /* This means "can be init if no module support, otherwise module load
148 #ifdef CONFIG_MODULES
149 #define __init_or_module
150 #define __initdata_or_module
151 #define __initconst_or_module
152 #define __INIT_OR_MODULE .text
153 #define __INITDATA_OR_MODULE .data
154 #define __INITRODATA_OR_MODULE .section ".rodata","a",%progbits
156 #define __init_or_module __init
157 #define __initdata_or_module __initdata
158 #define __initconst_or_module __initconst
159 #define __INIT_OR_MODULE __INIT
160 #define __INITDATA_OR_MODULE __INITDATA
161 #define __INITRODATA_OR_MODULE __INITRODATA
162 #endif /*CONFIG_MODULES*/
164 /* Generic info of form tag = "info" */
165 #define MODULE_INFO(tag, info) __MODULE_INFO(tag, tag, info)
167 /* For userspace: you can also call me... */
168 #define MODULE_ALIAS(_alias) MODULE_INFO(alias, _alias)
170 /* Soft module dependencies. See man modprobe.d for details.
171 * Example: MODULE_SOFTDEP("pre: module-foo module-bar post: module-baz")
173 #define MODULE_SOFTDEP(_softdep) MODULE_INFO(softdep, _softdep)
176 * MODULE_FILE is used for generating modules.builtin
177 * So, make it no-op when this is being built as a module
182 #define MODULE_FILE MODULE_INFO(file, KBUILD_MODFILE);
186 * The following license idents are currently accepted as indicating free
189 * "GPL" [GNU Public License v2]
190 * "GPL v2" [GNU Public License v2]
191 * "GPL and additional rights" [GNU Public License v2 rights and more]
192 * "Dual BSD/GPL" [GNU Public License v2
193 * or BSD license choice]
194 * "Dual MIT/GPL" [GNU Public License v2
195 * or MIT license choice]
196 * "Dual MPL/GPL" [GNU Public License v2
197 * or Mozilla license choice]
199 * The following other idents are available
201 * "Proprietary" [Non free products]
203 * Both "GPL v2" and "GPL" (the latter also in dual licensed strings) are
204 * merely stating that the module is licensed under the GPL v2, but are not
205 * telling whether "GPL v2 only" or "GPL v2 or later". The reason why there
206 * are two variants is a historic and failed attempt to convey more
207 * information in the MODULE_LICENSE string. For module loading the
208 * "only/or later" distinction is completely irrelevant and does neither
209 * replace the proper license identifiers in the corresponding source file
210 * nor amends them in any way. The sole purpose is to make the
211 * 'Proprietary' flagging work and to refuse to bind symbols which are
212 * exported with EXPORT_SYMBOL_GPL when a non free module is loaded.
214 * In the same way "BSD" is not a clear license information. It merely
215 * states, that the module is licensed under one of the compatible BSD
216 * license variants. The detailed and correct license information is again
217 * to be found in the corresponding source files.
219 * There are dual licensed components, but when running with Linux it is the
220 * GPL that is relevant so this is a non issue. Similarly LGPL linked with GPL
221 * is a GPL combined work.
223 * This exists for several reasons
224 * 1. So modinfo can show license info for users wanting to vet their setup
226 * 2. So the community can ignore bug reports including proprietary modules
227 * 3. So vendors can do likewise based on their own policies
229 #define MODULE_LICENSE(_license) MODULE_FILE MODULE_INFO(license, _license)
232 * Author(s), use "Name <email>" or just "Name", for multiple
233 * authors use multiple MODULE_AUTHOR() statements/lines.
235 #define MODULE_AUTHOR(_author) MODULE_INFO(author, _author)
237 /* What your module does. */
238 #define MODULE_DESCRIPTION(_description) MODULE_INFO(description, _description)
241 /* Creates an alias so file2alias.c can find device table. */
242 #define MODULE_DEVICE_TABLE(type, name) \
243 extern typeof(name) __mod_##type##__##name##_device_table \
244 __attribute__ ((unused, alias(__stringify(name))))
246 #define MODULE_DEVICE_TABLE(type, name)
249 /* Version of form [<epoch>:]<version>[-<extra-version>].
250 * Or for CVS/RCS ID version, everything but the number is stripped.
251 * <epoch>: A (small) unsigned integer which allows you to start versions
252 * anew. If not mentioned, it's zero. eg. "2:1.0" is after
255 * <version>: The <version> may contain only alphanumerics and the
256 * character `.'. Ordered by numeric sort for numeric parts,
257 * ascii sort for ascii parts (as per RPM or DEB algorithm).
259 * <extraversion>: Like <version>, but inserted for local
260 * customizations, eg "rh3" or "rusty1".
262 * Using this automatically adds a checksum of the .c files and the
263 * local headers in "srcversion".
266 #if defined(MODULE) || !defined(CONFIG_SYSFS)
267 #define MODULE_VERSION(_version) MODULE_INFO(version, _version)
269 #define MODULE_VERSION(_version) \
270 MODULE_INFO(version, _version); \
271 static struct module_version_attribute __modver_attr \
272 __used __section("__modver") \
273 __aligned(__alignof__(struct module_version_attribute)) \
280 .show = __modver_version_show, \
282 .module_name = KBUILD_MODNAME, \
283 .version = _version, \
287 /* Optional firmware file (or files) needed by the module
288 * format is simply firmware file name. Multiple firmware
289 * files require multiple MODULE_FIRMWARE() specifiers */
290 #define MODULE_FIRMWARE(_firmware) MODULE_INFO(firmware, _firmware)
292 #define MODULE_IMPORT_NS(ns) MODULE_INFO(import_ns, __stringify(ns))
294 struct notifier_block;
296 #ifdef CONFIG_MODULES
298 extern int modules_disabled; /* for sysctl */
299 /* Get/put a kernel symbol (calls must be symmetric) */
300 void *__symbol_get(const char *symbol);
301 void *__symbol_get_gpl(const char *symbol);
302 #define symbol_get(x) ((typeof(&x))(__symbol_get(__stringify(x))))
304 /* modules using other modules: kdb wants to see this. */
306 struct list_head source_list;
307 struct list_head target_list;
308 struct module *source, *target;
312 MODULE_STATE_LIVE, /* Normal state. */
313 MODULE_STATE_COMING, /* Full formed, running module_init. */
314 MODULE_STATE_GOING, /* Going away. */
315 MODULE_STATE_UNFORMED, /* Still setting it up. */
318 struct mod_tree_node {
320 struct latch_tree_node node;
323 struct module_layout {
324 /* The actual code + data. */
328 /* The size of the executable code. */
329 unsigned int text_size;
330 /* Size of RO section of the module (text+rodata) */
331 unsigned int ro_size;
332 /* Size of RO after init section */
333 unsigned int ro_after_init_size;
335 #ifdef CONFIG_MODULES_TREE_LOOKUP
336 struct mod_tree_node mtn;
340 #ifdef CONFIG_MODULES_TREE_LOOKUP
341 /* Only touch one cacheline for common rbtree-for-core-layout case. */
342 #define __module_layout_align ____cacheline_aligned
344 #define __module_layout_align
347 struct mod_kallsyms {
349 unsigned int num_symtab;
354 #ifdef CONFIG_LIVEPATCH
356 * struct klp_modinfo - ELF information preserved from the livepatch module
359 * @sechdrs: Section header table
360 * @secstrings: String table for the section headers
361 * @symndx: The symbol table section index
372 enum module_state state;
374 /* Member of list of modules */
375 struct list_head list;
377 /* Unique handle for this module */
378 char name[MODULE_NAME_LEN];
380 #ifdef CONFIG_STACKTRACE_BUILD_ID
381 /* Module build ID */
382 unsigned char build_id[BUILD_ID_SIZE_MAX];
386 struct module_kobject mkobj;
387 struct module_attribute *modinfo_attrs;
389 const char *srcversion;
390 struct kobject *holders_dir;
392 /* Exported symbols */
393 const struct kernel_symbol *syms;
395 unsigned int num_syms;
397 #ifdef CONFIG_ARCH_USES_CFI_TRAPS
402 /* Kernel parameters. */
404 struct mutex param_lock;
406 struct kernel_param *kp;
409 /* GPL-only exported symbols. */
410 unsigned int num_gpl_syms;
411 const struct kernel_symbol *gpl_syms;
413 bool using_gplonly_symbols;
415 #ifdef CONFIG_MODULE_SIG
416 /* Signature was verified. */
420 bool async_probe_requested;
422 /* Exception table */
423 unsigned int num_exentries;
424 struct exception_table_entry *extable;
426 /* Startup function. */
429 /* Core layout: rbtree is accessed frequently, so keep together. */
430 struct module_layout core_layout __module_layout_align;
431 struct module_layout init_layout;
432 #ifdef CONFIG_ARCH_WANTS_MODULES_DATA_IN_VMALLOC
433 struct module_layout data_layout;
436 /* Arch-specific module values */
437 struct mod_arch_specific arch;
439 unsigned long taints; /* same bits as kernel:taint_flags */
441 #ifdef CONFIG_GENERIC_BUG
442 /* Support for BUG */
444 struct list_head bug_list;
445 struct bug_entry *bug_table;
448 #ifdef CONFIG_KALLSYMS
449 /* Protected by RCU and/or module_mutex: use rcu_dereference() */
450 struct mod_kallsyms __rcu *kallsyms;
451 struct mod_kallsyms core_kallsyms;
453 /* Section attributes */
454 struct module_sect_attrs *sect_attrs;
456 /* Notes attributes */
457 struct module_notes_attrs *notes_attrs;
460 /* The command line arguments (may be mangled). People like
461 keeping pointers to this stuff */
466 void __percpu *percpu;
467 unsigned int percpu_size;
469 void *noinstr_text_start;
470 unsigned int noinstr_text_size;
472 #ifdef CONFIG_TRACEPOINTS
473 unsigned int num_tracepoints;
474 tracepoint_ptr_t *tracepoints_ptrs;
476 #ifdef CONFIG_TREE_SRCU
477 unsigned int num_srcu_structs;
478 struct srcu_struct **srcu_struct_ptrs;
480 #ifdef CONFIG_BPF_EVENTS
481 unsigned int num_bpf_raw_events;
482 struct bpf_raw_event_map *bpf_raw_events;
484 #ifdef CONFIG_DEBUG_INFO_BTF_MODULES
485 unsigned int btf_data_size;
488 #ifdef CONFIG_JUMP_LABEL
489 struct jump_entry *jump_entries;
490 unsigned int num_jump_entries;
492 #ifdef CONFIG_TRACING
493 unsigned int num_trace_bprintk_fmt;
494 const char **trace_bprintk_fmt_start;
496 #ifdef CONFIG_EVENT_TRACING
497 struct trace_event_call **trace_events;
498 unsigned int num_trace_events;
499 struct trace_eval_map **trace_evals;
500 unsigned int num_trace_evals;
502 #ifdef CONFIG_FTRACE_MCOUNT_RECORD
503 unsigned int num_ftrace_callsites;
504 unsigned long *ftrace_callsites;
506 #ifdef CONFIG_KPROBES
507 void *kprobes_text_start;
508 unsigned int kprobes_text_size;
509 unsigned long *kprobe_blacklist;
510 unsigned int num_kprobe_blacklist;
512 #ifdef CONFIG_HAVE_STATIC_CALL_INLINE
513 int num_static_call_sites;
514 struct static_call_site *static_call_sites;
516 #if IS_ENABLED(CONFIG_KUNIT)
517 int num_kunit_suites;
518 struct kunit_suite **kunit_suites;
522 #ifdef CONFIG_LIVEPATCH
523 bool klp; /* Is this a livepatch module? */
526 /* ELF information */
527 struct klp_modinfo *klp_info;
530 #ifdef CONFIG_PRINTK_INDEX
531 unsigned int printk_index_size;
532 struct pi_entry **printk_index_start;
535 #ifdef CONFIG_MODULE_UNLOAD
536 /* What modules depend on me? */
537 struct list_head source_list;
538 /* What modules do I depend on? */
539 struct list_head target_list;
541 /* Destruction function. */
547 #ifdef CONFIG_CONSTRUCTORS
548 /* Constructor functions. */
550 unsigned int num_ctors;
553 #ifdef CONFIG_FUNCTION_ERROR_INJECTION
554 struct error_injection_entry *ei_funcs;
555 unsigned int num_ei_funcs;
557 } ____cacheline_aligned __randomize_layout;
558 #ifndef MODULE_ARCH_INIT
559 #define MODULE_ARCH_INIT {}
562 #ifndef HAVE_ARCH_KALLSYMS_SYMBOL_VALUE
563 static inline unsigned long kallsyms_symbol_value(const Elf_Sym *sym)
565 return sym->st_value;
569 /* FIXME: It'd be nice to isolate modules during init, too, so they
570 aren't used before they (may) fail. But presently too much code
571 (IDE & SCSI) require entry into the module during init.*/
572 static inline bool module_is_live(struct module *mod)
574 return mod->state != MODULE_STATE_GOING;
577 struct module *__module_text_address(unsigned long addr);
578 struct module *__module_address(unsigned long addr);
579 bool is_module_address(unsigned long addr);
580 bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr);
581 bool is_module_percpu_address(unsigned long addr);
582 bool is_module_text_address(unsigned long addr);
584 static inline bool within_module_core(unsigned long addr,
585 const struct module *mod)
587 #ifdef CONFIG_ARCH_WANTS_MODULES_DATA_IN_VMALLOC
588 if ((unsigned long)mod->data_layout.base <= addr &&
589 addr < (unsigned long)mod->data_layout.base + mod->data_layout.size)
592 return (unsigned long)mod->core_layout.base <= addr &&
593 addr < (unsigned long)mod->core_layout.base + mod->core_layout.size;
596 static inline bool within_module_init(unsigned long addr,
597 const struct module *mod)
599 return (unsigned long)mod->init_layout.base <= addr &&
600 addr < (unsigned long)mod->init_layout.base + mod->init_layout.size;
603 static inline bool within_module(unsigned long addr, const struct module *mod)
605 return within_module_init(addr, mod) || within_module_core(addr, mod);
608 /* Search for module by name: must be in a RCU-sched critical section. */
609 struct module *find_module(const char *name);
611 extern void __noreturn __module_put_and_kthread_exit(struct module *mod,
613 #define module_put_and_kthread_exit(code) __module_put_and_kthread_exit(THIS_MODULE, code)
615 #ifdef CONFIG_MODULE_UNLOAD
616 int module_refcount(struct module *mod);
617 void __symbol_put(const char *symbol);
618 #define symbol_put(x) __symbol_put(__stringify(x))
619 void symbol_put_addr(void *addr);
621 /* Sometimes we know we already have a refcount, and it's easier not
622 to handle the error case (which only happens with rmmod --wait). */
623 extern void __module_get(struct module *module);
625 /* This is the Right Way to get a module: if it fails, it's being removed,
626 * so pretend it's not there. */
627 extern bool try_module_get(struct module *module);
629 extern void module_put(struct module *module);
631 #else /*!CONFIG_MODULE_UNLOAD*/
632 static inline bool try_module_get(struct module *module)
634 return !module || module_is_live(module);
636 static inline void module_put(struct module *module)
639 static inline void __module_get(struct module *module)
642 #define symbol_put(x) do { } while (0)
643 #define symbol_put_addr(p) do { } while (0)
645 #endif /* CONFIG_MODULE_UNLOAD */
647 /* This is a #define so the string doesn't get put in every .o file */
648 #define module_name(mod) \
650 struct module *__mod = (mod); \
651 __mod ? __mod->name : "kernel"; \
654 /* Dereference module function descriptor */
655 void *dereference_module_function_descriptor(struct module *mod, void *ptr);
657 int register_module_notifier(struct notifier_block *nb);
658 int unregister_module_notifier(struct notifier_block *nb);
660 extern void print_modules(void);
662 static inline bool module_requested_async_probing(struct module *module)
664 return module && module->async_probe_requested;
667 static inline bool is_livepatch_module(struct module *mod)
669 #ifdef CONFIG_LIVEPATCH
676 void set_module_sig_enforced(void);
678 #else /* !CONFIG_MODULES... */
680 static inline struct module *__module_address(unsigned long addr)
685 static inline struct module *__module_text_address(unsigned long addr)
690 static inline bool is_module_address(unsigned long addr)
695 static inline bool is_module_percpu_address(unsigned long addr)
700 static inline bool __is_module_percpu_address(unsigned long addr, unsigned long *can_addr)
705 static inline bool is_module_text_address(unsigned long addr)
710 static inline bool within_module_core(unsigned long addr,
711 const struct module *mod)
716 static inline bool within_module_init(unsigned long addr,
717 const struct module *mod)
722 static inline bool within_module(unsigned long addr, const struct module *mod)
727 /* Get/put a kernel symbol (calls should be symmetric) */
728 #define symbol_get(x) ({ extern typeof(x) x __attribute__((weak,visibility("hidden"))); &(x); })
729 #define symbol_put(x) do { } while (0)
730 #define symbol_put_addr(x) do { } while (0)
732 static inline void __module_get(struct module *module)
736 static inline bool try_module_get(struct module *module)
741 static inline void module_put(struct module *module)
745 #define module_name(mod) "kernel"
747 static inline int register_module_notifier(struct notifier_block *nb)
749 /* no events will happen anyway, so this can always succeed */
753 static inline int unregister_module_notifier(struct notifier_block *nb)
758 #define module_put_and_kthread_exit(code) kthread_exit(code)
760 static inline void print_modules(void)
764 static inline bool module_requested_async_probing(struct module *module)
770 static inline void set_module_sig_enforced(void)
774 /* Dereference module function descriptor */
776 void *dereference_module_function_descriptor(struct module *mod, void *ptr)
781 #endif /* CONFIG_MODULES */
784 extern struct kset *module_kset;
785 extern struct kobj_type module_ktype;
786 #endif /* CONFIG_SYSFS */
788 #define symbol_request(x) try_then_request_module(symbol_get(x), "symbol:" #x)
790 /* BELOW HERE ALL THESE ARE OBSOLETE AND WILL VANISH */
792 #define __MODULE_STRING(x) __stringify(x)
794 #ifdef CONFIG_GENERIC_BUG
795 void module_bug_finalize(const Elf_Ehdr *, const Elf_Shdr *,
797 void module_bug_cleanup(struct module *);
799 #else /* !CONFIG_GENERIC_BUG */
801 static inline void module_bug_finalize(const Elf_Ehdr *hdr,
802 const Elf_Shdr *sechdrs,
806 static inline void module_bug_cleanup(struct module *mod) {}
807 #endif /* CONFIG_GENERIC_BUG */
809 #ifdef CONFIG_RETPOLINE
810 extern bool retpoline_module_ok(bool has_retpoline);
812 static inline bool retpoline_module_ok(bool has_retpoline)
818 #ifdef CONFIG_MODULE_SIG
819 bool is_module_sig_enforced(void);
821 static inline bool module_sig_ok(struct module *module)
823 return module->sig_ok;
825 #else /* !CONFIG_MODULE_SIG */
826 static inline bool is_module_sig_enforced(void)
831 static inline bool module_sig_ok(struct module *module)
835 #endif /* CONFIG_MODULE_SIG */
837 #if defined(CONFIG_MODULES) && defined(CONFIG_KALLSYMS)
838 int module_kallsyms_on_each_symbol(const char *modname,
839 int (*fn)(void *, const char *,
840 struct module *, unsigned long),
843 /* For kallsyms to ask for address resolution. namebuf should be at
844 * least KSYM_NAME_LEN long: a pointer to namebuf is returned if
845 * found, otherwise NULL.
847 const char *module_address_lookup(unsigned long addr,
848 unsigned long *symbolsize,
849 unsigned long *offset,
850 char **modname, const unsigned char **modbuildid,
852 int lookup_module_symbol_name(unsigned long addr, char *symname);
853 int lookup_module_symbol_attrs(unsigned long addr,
855 unsigned long *offset,
859 /* Returns 0 and fills in value, defined and namebuf, or -ERANGE if
860 * symnum out of range.
862 int module_get_kallsym(unsigned int symnum, unsigned long *value, char *type,
863 char *name, char *module_name, int *exported);
865 /* Look for this name: can be of form module:name. */
866 unsigned long module_kallsyms_lookup_name(const char *name);
868 unsigned long find_kallsyms_symbol_value(struct module *mod, const char *name);
870 #else /* CONFIG_MODULES && CONFIG_KALLSYMS */
872 static inline int module_kallsyms_on_each_symbol(const char *modname,
873 int (*fn)(void *, const char *,
874 struct module *, unsigned long),
880 /* For kallsyms to ask for address resolution. NULL means not found. */
881 static inline const char *module_address_lookup(unsigned long addr,
882 unsigned long *symbolsize,
883 unsigned long *offset,
885 const unsigned char **modbuildid,
891 static inline int lookup_module_symbol_name(unsigned long addr, char *symname)
896 static inline int lookup_module_symbol_attrs(unsigned long addr,
898 unsigned long *offset,
905 static inline int module_get_kallsym(unsigned int symnum, unsigned long *value,
906 char *type, char *name,
907 char *module_name, int *exported)
912 static inline unsigned long module_kallsyms_lookup_name(const char *name)
917 static inline unsigned long find_kallsyms_symbol_value(struct module *mod,
923 #endif /* CONFIG_MODULES && CONFIG_KALLSYMS */
925 #endif /* _LINUX_MODULE_H */