#include <linux/stringify.h>
#include <linux/kobject.h>
#include <linux/moduleparam.h>
-#include <linux/marker.h>
#include <linux/tracepoint.h>
-#include <asm/local.h>
+#include <linux/percpu.h>
#include <asm/module.h>
+#include <trace/events/module.h>
+
/* Not Yet Implemented */
#define MODULE_SUPPORTED_DEVICE(name)
-/* some toolchains uses a `_' prefix for all user symbols */
-#ifndef MODULE_SYMBOL_PREFIX
+/* Some toolchains use a `_' prefix for all user symbols. */
+#ifdef CONFIG_SYMBOL_PREFIX
+#define MODULE_SYMBOL_PREFIX CONFIG_SYMBOL_PREFIX
+#else
#define MODULE_SYMBOL_PREFIX ""
#endif
-#define MODULE_NAME_LEN (64 - sizeof(unsigned long))
+#define MODULE_NAME_LEN MAX_PARAM_PREFIX_LEN
struct kernel_symbol
{
struct kobject kobj;
struct module *mod;
struct kobject *drivers_dir;
+ struct module_param_attrs *mp;
};
/* These are either module local, or the kernel's dummy ones. */
void sort_extable(struct exception_table_entry *start,
struct exception_table_entry *finish);
void sort_main_extable(void);
+void trim_init_extable(struct module *m);
#ifdef MODULE
#define MODULE_GENERIC_TABLE(gtype,name) \
*/
#define MODULE_LICENSE(_license) MODULE_INFO(license, _license)
-/* Author, ideally of form NAME[, NAME]*[ and NAME] */
+/*
+ * Author(s), use "Name <email>" or just "Name", for multiple
+ * authors use multiple MODULE_AUTHOR() statements/lines.
+ */
#define MODULE_AUTHOR(_author) MODULE_INFO(author, _author)
/* What your module does. */
#ifdef CONFIG_MODULES
+extern int modules_disabled; /* for sysctl */
/* Get/put a kernel symbol (calls must be symmetric) */
void *__symbol_get(const char *symbol);
void *__symbol_get_gpl(const char *symbol);
#define symbol_get(x) ((typeof(&x))(__symbol_get(MODULE_SYMBOL_PREFIX #x)))
+/* modules using other modules: kdb wants to see this. */
+struct module_use {
+ struct list_head source_list;
+ struct list_head target_list;
+ struct module *source, *target;
+};
+
#ifndef __GENKSYMS__
#ifdef CONFIG_MODVERSIONS
/* Mark the CRC weak since genksyms apparently decides not to
#endif
-struct module_ref
-{
- local_t count;
-} ____cacheline_aligned;
-
enum module_state
{
MODULE_STATE_LIVE,
/* Sysfs stuff. */
struct module_kobject mkobj;
- struct module_param_attrs *param_attrs;
struct module_attribute *modinfo_attrs;
const char *version;
const char *srcversion;
const unsigned long *crcs;
unsigned int num_syms;
+ /* Kernel parameters. */
+ struct kernel_param *kp;
+ unsigned int num_kp;
+
/* GPL-only exported symbols. */
unsigned int num_gpl_syms;
const struct kernel_symbol *gpl_syms;
/* Exception table */
unsigned int num_exentries;
- const struct exception_table_entry *extable;
+ struct exception_table_entry *extable;
/* Startup function. */
int (*init)(void);
/* The size of the executable code in each section. */
unsigned int init_text_size, core_text_size;
- /* The handle returned from unwind_add_table. */
- void *unwind_info;
-
/* Arch-specific module values */
struct mod_arch_specific arch;
#endif
#ifdef CONFIG_KALLSYMS
- /* We keep the symbol and string tables for kallsyms. */
- Elf_Sym *symtab;
- unsigned int num_symtab;
- char *strtab;
+ /*
+ * We keep the symbol and string tables for kallsyms.
+ * The core_* fields below are temporary, loader-only (they
+ * could really be discarded after module init).
+ */
+ Elf_Sym *symtab, *core_symtab;
+ unsigned int num_symtab, core_num_syms;
+ char *strtab, *core_strtab;
/* Section attributes */
struct module_sect_attrs *sect_attrs;
struct module_notes_attrs *notes_attrs;
#endif
+#ifdef CONFIG_SMP
/* Per-cpu data. */
- void *percpu;
+ void __percpu *percpu;
+ unsigned int percpu_size;
+#endif
/* The command line arguments (may be mangled). People like
keeping pointers to this stuff */
char *args;
-#ifdef CONFIG_MARKERS
- struct marker *markers;
- unsigned int num_markers;
-#endif
#ifdef CONFIG_TRACEPOINTS
struct tracepoint *tracepoints;
unsigned int num_tracepoints;
#endif
+#ifdef CONFIG_TRACING
+ const char **trace_bprintk_fmt_start;
+ unsigned int num_trace_bprintk_fmt;
+#endif
+#ifdef CONFIG_EVENT_TRACING
+ struct ftrace_event_call *trace_events;
+ unsigned int num_trace_events;
+#endif
+#ifdef CONFIG_FTRACE_MCOUNT_RECORD
+ unsigned long *ftrace_callsites;
+ unsigned int num_ftrace_callsites;
+#endif
+
#ifdef CONFIG_MODULE_UNLOAD
/* What modules depend on me? */
- struct list_head modules_which_use_me;
+ struct list_head source_list;
+ /* What modules do I depend on? */
+ struct list_head target_list;
/* Who is waiting for us to be unloaded */
struct task_struct *waiter;
/* Destruction function. */
void (*exit)(void);
- /* Reference counts */
- struct module_ref ref[NR_CPUS];
+ struct module_ref {
+ unsigned int incs;
+ unsigned int decs;
+ } __percpu *refptr;
+#endif
+
+#ifdef CONFIG_CONSTRUCTORS
+ /* Constructor functions. */
+ ctor_fn_t *ctors;
+ unsigned int num_ctors;
#endif
};
#ifndef MODULE_ARCH_INIT
#define MODULE_ARCH_INIT {}
#endif
+extern struct mutex module_mutex;
+
/* FIXME: It'd be nice to isolate modules during init, too, so they
aren't used before they (may) fail. But presently too much code
(IDE & SCSI) require entry into the module during init.*/
return mod->state != MODULE_STATE_GOING;
}
-/* Is this address in a module? (second is with no locks, for oops) */
-struct module *module_text_address(unsigned long addr);
struct module *__module_text_address(unsigned long addr);
-int is_module_address(unsigned long addr);
+struct module *__module_address(unsigned long addr);
+bool is_module_address(unsigned long addr);
+bool is_module_percpu_address(unsigned long addr);
+bool is_module_text_address(unsigned long addr);
+
+static inline int within_module_core(unsigned long addr, struct module *mod)
+{
+ return (unsigned long)mod->module_core <= addr &&
+ addr < (unsigned long)mod->module_core + mod->core_size;
+}
+
+static inline int within_module_init(unsigned long addr, struct module *mod)
+{
+ return (unsigned long)mod->module_init <= addr &&
+ addr < (unsigned long)mod->module_init + mod->init_size;
+}
+
+/* Search for module by name: must hold module_mutex. */
+struct module *find_module(const char *name);
+
+struct symsearch {
+ const struct kernel_symbol *start, *stop;
+ const unsigned long *crcs;
+ enum {
+ NOT_GPL_ONLY,
+ GPL_ONLY,
+ WILL_BE_GPL_ONLY,
+ } licence;
+ bool unused;
+};
+
+/* Search for an exported symbol by name. */
+const struct kernel_symbol *find_symbol(const char *name,
+ struct module **owner,
+ const unsigned long **crc,
+ bool gplok,
+ bool warn);
+
+/* Walk the exported symbol table */
+bool each_symbol(bool (*fn)(const struct symsearch *arr, struct module *owner,
+ unsigned int symnum, void *data), void *data);
/* Returns 0 and fills in value, defined and namebuf, or -ERANGE if
symnum out of range. */
/* Look for this name: can be of form module:name. */
unsigned long module_kallsyms_lookup_name(const char *name);
+int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
+ struct module *, unsigned long),
+ void *data);
+
extern void __module_put_and_exit(struct module *mod, long code)
__attribute__((noreturn));
#define module_put_and_exit(code) __module_put_and_exit(THIS_MODULE, code);
static inline void __module_get(struct module *module)
{
if (module) {
- BUG_ON(module_refcount(module) == 0);
- local_inc(&module->ref[get_cpu()].count);
- put_cpu();
+ preempt_disable();
+ __this_cpu_inc(module->refptr->incs);
+ trace_module_get(module, _THIS_IP_);
+ preempt_enable();
}
}
int ret = 1;
if (module) {
- unsigned int cpu = get_cpu();
- if (likely(module_is_live(module)))
- local_inc(&module->ref[cpu].count);
- else
+ preempt_disable();
+
+ if (likely(module_is_live(module))) {
+ __this_cpu_inc(module->refptr->incs);
+ trace_module_get(module, _THIS_IP_);
+ } else
ret = 0;
- put_cpu();
+
+ preempt_enable();
}
return ret;
}
#define symbol_put_addr(p) do { } while(0)
#endif /* CONFIG_MODULE_UNLOAD */
+int use_module(struct module *a, struct module *b);
/* This is a #define so the string doesn't get put in every .o file */
#define module_name(mod) \
extern void print_modules(void);
-extern void module_update_markers(void);
-
extern void module_update_tracepoints(void);
extern int module_get_iter_tracepoints(struct tracepoint_iter *iter);
return NULL;
}
-/* Is this address in a module? */
-static inline struct module *module_text_address(unsigned long addr)
+static inline struct module *__module_address(unsigned long addr)
{
return NULL;
}
-/* Is this address in a module? (don't take a lock, we're oopsing) */
static inline struct module *__module_text_address(unsigned long addr)
{
return NULL;
}
-static inline int is_module_address(unsigned long addr)
+static inline bool is_module_address(unsigned long addr)
{
- return 0;
+ return false;
+}
+
+static inline bool is_module_percpu_address(unsigned long addr)
+{
+ return false;
+}
+
+static inline bool is_module_text_address(unsigned long addr)
+{
+ return false;
}
/* Get/put a kernel symbol (calls should be symmetric) */
return 0;
}
+static inline int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *,
+ struct module *,
+ unsigned long),
+ void *data)
+{
+ return 0;
+}
+
static inline int register_module_notifier(struct notifier_block * nb)
{
/* no events will happen anyway, so this can always succeed */
{
}
-static inline void module_update_markers(void)
-{
-}
-
static inline void module_update_tracepoints(void)
{
}
#endif /* CONFIG_MODULES */
-struct device_driver;
#ifdef CONFIG_SYSFS
-struct module;
-
extern struct kset *module_kset;
extern struct kobj_type module_ktype;
extern int module_sysfs_initialized;
+#endif /* CONFIG_SYSFS */
-int mod_sysfs_init(struct module *mod);
-int mod_sysfs_setup(struct module *mod,
- struct kernel_param *kparam,
- unsigned int num_params);
-int module_add_modinfo_attrs(struct module *mod);
-void module_remove_modinfo_attrs(struct module *mod);
+#define symbol_request(x) try_then_request_module(symbol_get(x), "symbol:" #x)
-#else /* !CONFIG_SYSFS */
+/* BELOW HERE ALL THESE ARE OBSOLETE AND WILL VANISH */
-static inline int mod_sysfs_init(struct module *mod)
-{
- return 0;
-}
+#define __MODULE_STRING(x) __stringify(x)
-static inline int mod_sysfs_setup(struct module *mod,
- struct kernel_param *kparam,
- unsigned int num_params)
-{
- return 0;
-}
-static inline int module_add_modinfo_attrs(struct module *mod)
+#ifdef CONFIG_GENERIC_BUG
+int module_bug_finalize(const Elf_Ehdr *, const Elf_Shdr *,
+ struct module *);
+void module_bug_cleanup(struct module *);
+
+#else /* !CONFIG_GENERIC_BUG */
+
+static inline int module_bug_finalize(const Elf_Ehdr *hdr,
+ const Elf_Shdr *sechdrs,
+ struct module *mod)
{
return 0;
}
-
-static inline void module_remove_modinfo_attrs(struct module *mod)
-{ }
-
-#endif /* CONFIG_SYSFS */
-
-#define symbol_request(x) try_then_request_module(symbol_get(x), "symbol:" #x)
-
-/* BELOW HERE ALL THESE ARE OBSOLETE AND WILL VANISH */
-
-#define __MODULE_STRING(x) __stringify(x)
+static inline void module_bug_cleanup(struct module *mod) {}
+#endif /* CONFIG_GENERIC_BUG */
#endif /* _LINUX_MODULE_H */
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